CDM Smith

 NetSTORM Point Precipitation Frequency Estimates

NetSTORM
Annual Statistics  |  Event Listings  |  Frequency Estimates

Gage ID: KBOS
Location: BOSTON, MA
Latitude: 42.3606°, Longitude: -71.0098°
Elevation: 10.5 ft
Additional metadata


Monthly Statistics
MonthTotalRecordsMeanStandard DeviationMaximumDuration
Jan 3.4273.940.0460.0540.65017.62
Feb 3.2367.840.0480.0540.66018.20
March3.7374.910.0500.0570.68018.13
April3.6667.890.0540.0620.91017.87
May 3.2057.290.0560.0720.98017.78
June 3.3046.770.0710.1081.54015.25
July 3.1737.020.0860.1401.61011.63
Aug 3.3339.540.0840.1412.03011.32
Sep 3.2942.050.0780.1181.58014.64
Oct 3.3651.390.0650.0891.53016.57
Nov 3.7063.580.0580.0740.97018.24
Dec 3.7271.590.0520.0610.81017.25

Hour of Day Statistics
HourJan Feb MarchAprilMay June July Aug Sep Oct Nov Dec TotalRecordsMeanStandard DeviationMaximum
1:000.150.150.160.170.160.120.090.130.120.180.160.171.7729.010.0610.0830.96
2:000.140.140.180.150.150.120.140.120.140.170.170.161.7729.560.0600.0842.03
3:000.150.140.180.170.140.140.130.130.160.180.170.161.8530.720.0600.0841.35
4:000.140.130.160.180.140.130.130.110.170.170.170.161.8130.850.0590.0831.58
5:000.150.130.170.170.140.130.140.120.160.140.170.161.7930.420.0590.0811.17
6:000.150.130.170.150.140.120.150.130.140.140.190.151.7730.570.0580.0801.11
7:000.150.140.170.140.140.120.140.140.160.130.160.171.7830.590.0580.0831.61
8:000.150.140.160.130.130.140.120.170.140.120.140.161.6929.340.0580.0861.56
9:000.140.140.150.130.110.140.120.160.130.120.150.141.6428.260.0580.0811.41
10:000.150.150.160.120.130.120.100.130.140.130.150.141.6128.250.0570.0771.10
11:000.150.150.150.130.130.100.090.130.120.110.150.151.5827.010.0580.0771.10
12:000.150.140.140.130.120.110.120.140.120.130.180.151.6427.540.0600.0821.22
13:000.150.140.140.140.110.120.100.130.160.130.160.151.6427.300.0600.0901.54
14:000.140.130.140.160.100.180.130.160.160.140.130.151.7127.010.0630.0971.63
15:000.130.140.130.150.110.150.160.210.150.130.120.141.7327.130.0640.1031.55
16:000.140.140.150.160.120.200.170.180.130.130.130.141.7828.460.0630.0981.60
17:000.130.140.150.160.140.200.250.170.110.140.130.151.8529.420.0630.0991.34
18:000.130.120.140.160.130.180.180.140.120.120.140.171.7529.180.0600.0841.05
19:000.140.120.160.160.140.120.170.140.130.130.160.171.7329.680.0580.0821.45
20:000.140.120.160.150.140.130.140.130.120.130.140.161.6728.640.0580.0821.09
21:000.130.120.150.160.140.140.120.110.120.120.140.151.6028.110.0570.0760.80
22:000.140.140.150.140.120.150.090.100.140.150.150.161.6228.900.0560.0791.53
23:000.140.140.150.160.150.130.090.120.130.150.150.151.6428.730.0570.0801.38
24:000.150.130.150.170.150.120.080.120.130.160.170.171.7029.120.0580.0781.24


Day of Week Statistics
WeekdayTotalRecordsMeanStandard DeviationMaximumDuration
Sun5.9197.940.0600.0861.6016.13
Mon5.7599.100.0580.0801.6115.74
Tue5.86101.510.0580.0831.6316.31
Wed5.7898.690.0590.0821.3317.16
Thu5.9296.340.0610.0892.0316.06
Fri5.99100.650.0590.0851.5516.36
Sat5.9399.570.0600.0881.5416.57
YearTotalRecordsMeanStandard
Deviation
MaximumDuration
(h)
Interevent
(h)
≥0.00≥0.05≥0.10≥0.25≥0.50≥1.00≥2.00
189436.286610.0550.0801.0716.371938764553726121
189540.116020.0670.0970.9312.931899169634024133
189637.347810.0480.0560.5717.27172917158452992
189740.086350.0630.0830.6711.4117310075654629122
189849.668420.0590.0730.9114.581389481745730154
189934.616060.0570.0901.2215.712138358483826111
190043.976180.0710.0800.6015.951948764554024155
190148.606690.0730.0951.2415.402179067603929155
190233.766040.0560.0670.7314.271999068564026111
190341.247280.0570.0740.6519.071608968644128113
190439.626890.0580.0790.8513.091901037864412262
190532.176120.0530.0841.0017.88217795852332471
190640.696370.0640.0981.5313.9521210076623928122
190737.566550.0570.0780.6815.001899472584323122
190830.045080.0590.0921.5512.27218806557352270
190939.376540.0600.0710.5116.211938260554122103
191028.325580.0510.0600.6515.59188936352381980
191135.776550.0550.0790.9515.921848664583726101
191234.556110.0570.0821.3413.951798664554126111
191338.016790.0560.0760.9117.56184826761412882
191434.276510.0530.0620.5116.771777656503824122
191538.765900.0660.1091.1716.11238796349352294
191637.367850.0480.0711.2717.951991007563382993
191738.996580.0590.0941.2415.322109372553823131
191833.566210.0540.0770.8715.002509671573121122
191942.417530.0560.0760.6617.381838973604230122
192046.137860.0590.0710.5618.261988868584230155
192142.046590.0640.1181.4517.491979161524123104
192241.126240.0660.0890.9217.852027259533821114
192334.726260.0550.0670.5411.83184847162452092
192436.995360.0690.1010.8213.30193796257392282
192540.176430.0620.0830.7013.061598569625226101
192639.285720.0690.1060.9411.611908569554424103
192740.906490.0630.0940.9913.081641007366483390
192838.356360.0600.0890.8913.591758867574329112
192937.156770.0550.0730.7913.571848674584626111
193034.876170.0570.0810.8716.891917963503622102
193143.456950.0630.0810.6119.951998159523728143
193241.616320.0660.0910.7516.392208860513525114
193346.207780.0590.0910.9018.172069568553828113
193434.716280.0550.0790.9113.55205957363402862
193532.946020.0550.0720.6817.322388254443420112
193647.057230.0650.0840.9114.4717510065574529203
193743.376820.0640.0870.8116.331699074614826125
193850.528520.0590.0951.3819.0717310277634624154
193932.426370.0510.0600.3815.10206886754402582
194036.087450.0480.0620.6420.342449964493119131
194130.885660.0550.0750.9715.462267857493722111
194242.477290.0580.0850.8513.801718667554527161
194332.236210.0520.0750.7417.51192996452382263
194437.066500.0570.0960.8519.111967660463726113
194547.288810.0540.0760.9718.3315410781704931123
194638.086180.0620.0851.0915.321848468553822123
194737.905760.0660.1031.3118.222207254483724132
194840.387710.0520.0730.9618.22159917766483292
194931.566040.0520.0881.5812.67187896960412442
195032.717000.0470.0700.6718.252369468583616101
195146.978110.0580.0760.7415.3115210275675132172
195240.607490.0540.0921.6317.621649568564226133
195357.738370.0690.0880.6618.091649072584734218
195462.328750.0710.1161.2219.1016710980654731186
195556.507260.0780.1531.6017.001779770574230175
195647.398820.0540.0770.9518.5517310273624936114
195733.926390.0530.0680.5717.59190835953362273
195861.639610.0640.0870.9718.2413410477645439228
195951.418570.0600.0931.0718.7716810078674835163
196044.466660.0670.1021.5416.931928663544231175
196147.847510.0640.0850.9516.511728966604531174
196243.237340.0590.0760.7517.922169364553724105
196334.846570.0530.0670.7214.86190866760402672
196436.476770.0540.0750.8218.452119158503624120
196523.715900.0400.0470.4217.38251905645301761
196636.016480.0560.0750.9016.082289463523726110
196747.518100.0590.0891.5616.581619479674826174
196842.266810.0620.0700.4815.952098563533930152
196947.897200.0670.0780.5019.171998465554027155
197041.917330.0570.0740.9516.451908972604228134
197135.677040.0510.0660.5415.47188877160402591
197253.099210.0580.0780.8516.0414611387735339154
197342.767480.0570.0820.9715.211529673615131112
197440.346520.0620.0910.8813.38168977362452693
197545.808580.0530.0630.5719.361809073584327135
197636.726470.0570.0890.9313.91173927360452392
197744.178220.0540.0630.4417.421759474654328162
197837.646680.0560.0751.0017.832018163493823114
197944.177790.0570.0841.0819.281809266584126155
198029.475120.0580.0790.7012.37241896852351890
198135.716790.0530.0650.8020.57223866555352182
198244.617160.0620.0830.9017.121908764553829133
198353.607790.0690.0790.6016.601659672614734185
198450.097440.0670.0860.6616.931789166564429154
198536.586960.0530.1062.0316.49174986458442582
198644.336820.0650.0810.6617.312149068573927134
198745.487490.0610.0790.7519.302028256513929135
198834.785880.0590.0820.7313.08221966755372193
198942.427810.0540.0730.7017.041329671664529131
199046.507110.0650.0990.9317.862019169574429146
199142.256800.0620.0850.7218.311978259543826145
199243.727330.0600.0920.9717.041789571594723104
199343.217540.0570.0760.6314.7918410070594333142
199447.608060.0590.0870.8418.631539771604329164
199535.126620.0530.0780.6616.931749570524024113
199649.437460.0660.0840.6515.591599577615130133
199730.256190.0490.0600.5816.09206956749352162
199853.206900.0770.1171.3417.161738362584228157
199937.835840.0650.1051.3114.88188856252412592
200044.526760.0660.0900.7216.511738669594635103
200129.645220.0570.0890.9814.09186816149322062
200239.927320.0550.0690.9117.841819271624433122
200340.787060.0580.0880.9615.6520310174644029130
200443.556460.0670.0960.7419.891848765513728124
200541.197140.0580.0700.5717.411839271634427102
200651.897630.0680.0830.5818.221729173644526136
200738.966530.0600.1021.6115.902109071563726113
200853.107560.0700.1010.9814.211379981735733155
200942.327340.0580.0740.7415.741599274684933122
201047.146720.0700.1121.5118.582158754473523135
201150.137650.0660.0840.8118.041599871665136202
201236.736260.0590.0991.3317.652239064523729111
201337.096430.0580.0800.7516.561689659534019112
201444.867490.0600.0760.8017.961559364625032124
201534.766570.0530.0730.5017.002169163523825122
201632.605980.0550.0690.6814.431899568553520120
201741.207650.0540.0790.6920.051959676613928132
201849.477740.0640.0981.1215.1914910582715341191
201946.927820.0600.1001.4113.1616010990764930151
202036.436350.0570.0851.2315.291989070574128110
202152.337470.0700.1051.0215.8316710074674836174
Mean41.13693.800.060.080.9016.33185.2491.068.257.941.726.812.02.8
          99.5% confidence in upward trend (τ = 0.167)

Longest drought = 36 days preceding 04/03/1915 12:00
Period of record = 128.00 years
Period missing = 0.00 years
Records = 88806
Mean event depth = 0.874 (≥.25 inches)
Annual event depth = 37.2 (≥.25 inches)
Mean event duration = 17.33 hours
Interevent coefficient of variation = 0.85 (excluding periods exceeding 40 dry days)
Interevent time = 12 hours
ARI: Average recurrence interval
AMS: Annual maximum series


RankDepthDateEvent IDHoursRecordsMaximumARI (y)
111.948/18/1955 6:00257140.00361.41182.34
28.865/12/2006 20:00474695.00770.4361.33
37.8910/20/1996 4:00435533.00330.6039.71
47.869/15/1933 24:00164542.00410.9039.14
57.0110/5/1962 8:00289461.00550.5925.31
66.983/13/2010 11:00493158.00580.4324.90
76.776/4/1982 17:00373283.00770.3622.14
86.776/12/1998 16:00442143.00321.3422.14
96.047/9/1921 2:00111822.00141.4514.21
106.033/31/2004 11:00465444.00410.5314.12
116.005/30/1984 17:00382576.00560.4313.85
125.9110/17/1932 16:00160766.00570.6113.05
135.745/15/1954 20:00251618.00180.9811.64
145.7312/11/1992 4:00418253.00410.4911.56
155.7210/12/1895 15:006939.00390.6411.48
165.649/10/1954 19:00253123.00181.2210.86
175.477/21/1938 6:00185280.00460.789.63
185.407/1/1915 3:0088350.00341.179.15
195.356/5/1986 13:00390662.00460.548.82
205.224/27/1904 3:0044872.00500.378.00
215.176/8/1931 15:00156070.00460.347.71
225.141/8/1956 16:002589161.001110.407.53
235.144/4/1987 9:00394382.00650.307.53
245.103/17/1968 15:00311140.00370.387.30
254.989/12/1944 19:00208855.00350.746.65
264.933/29/2010 3:00493353.00490.336.39
274.766/29/1921 19:00111769.00440.565.56
284.719/10/1999 8:00447317.00171.315.33
294.689/2/1905 23:0049938.00340.915.20
304.637/31/1985 14:00387214.00132.034.99
314.5912/26/1969 1:00318151.00390.414.82
324.488/22/2010 10:00494779.00531.094.38
334.378/25/1924 23:00124917.00170.783.98
344.3510/8/1998 13:00443782.00580.603.91
354.279/9/1924 22:00125315.00150.823.64
364.246/6/2000 8:00450627.00240.593.54
374.239/1/2021 11:00543220.00181.023.51
384.1610/13/2005 22:00472144.00360.343.29
394.156/18/1922 6:00115641.00270.333.26
404.1411/21/1992 15:004179100.00460.973.23
414.125/4/1922 7:00115238.00380.263.17
424.116/26/1938 10:00184864.00550.263.15
434.068/9/1917 5:0096630.00161.243.00
443.995/25/1967 5:00307541.00350.352.81
453.989/16/1958 18:00271541.00380.412.79
463.939/17/1938 18:00185880.00490.842.66
473.9110/13/1990 9:00408923.00180.932.61
483.8912/9/2008 21:00487062.00560.502.56
493.878/11/1989 6:00403862.00430.432.51
503.854/16/1954 12:00251042.00400.362.47
513.8111/9/1969 10:00317454.00390.352.38
523.802/23/1981 19:00368173.00590.182.35
533.7511/6/1963 5:00293884.00490.282.25
543.7312/3/1925 5:00131473.00600.202.20
553.725/21/1920 18:00107734.00340.322.18
563.7111/3/1955 18:00258355.00390.352.16
573.713/29/1953 9:00246551.00430.342.16
583.709/23/1975 2:00345280.00640.252.14
593.6710/1/1984 14:00383724.00240.662.08
603.669/25/1991 0:00412838.00290.402.06
613.669/15/1999 17:00447438.00300.702.06
623.653/29/2014 15:00510347.00380.352.04
633.636/7/2013 0:00506631.00260.752.01
643.602/24/1969 3:00314876.00640.251.95
653.598/5/1952 7:00243949.00251.631.93
663.587/19/1959 19:00276035.00191.071.92
673.579/14/1904 12:0046623.00130.851.90
683.565/27/1906 17:0052341.00400.581.88
693.545/8/1954 12:00251423.00230.421.85
703.497/28/1911 5:0072215.00150.951.76


RankTotalDateEvent IDGauge ARI (y)Atlas ARI (y)
12.038/1/1985 2:0038726529
21.638/5/1952 14:0024392211
31.617/30/2007 7:0047992010
41.607/10/1955 16:0025672010
51.589/1/1949 4:002306199
61.568/6/1967 8:003085179
71.558/7/1908 15:00616179
81.546/4/1960 13:002800168
91.5310/9/1906 22:00536168
101.517/10/2010 15:004943158
111.457/9/1921 19:001118127
121.418/19/1955 9:002571106
131.416/29/2019 16:005335106
141.388/16/1938 23:00185496
151.347/18/1912 17:0076685
161.346/13/1998 14:00442185
171.337/18/2012 17:00502985
181.319/10/1999 23:00447375
191.319/2/1947 13:00221875
201.277/3/1916 17:0092364
211.248/10/1917 7:0096654
221.248/24/1901 24:0033554
231.238/23/2020 17:00538354
241.229/11/1954 12:00253154
251.228/22/1899 19:0025654
261.217/28/2007 16:00479854
271.177/1/1915 5:0088343
281.127/17/2018 17:00527833
291.098/25/2010 10:00494732
301.097/30/1946 20:00217732
311.0810/3/1979 17:00363332
321.077/19/1959 20:00276032
331.078/21/1894 13:002532
341.067/31/2019 15:00534032
351.056/13/1959 18:00275122
361.058/31/1954 10:00252922
371.047/2/1955 19:00256622
381.039/12/1960 15:00280922
391.029/2/2021 3:00543222
401.008/12/1905 13:0049622
411.008/6/1978 9:00358122
420.9910/13/1927 12:00139922
430.988/3/2001 20:00455422
440.987/20/2008 15:00484822
450.985/16/1954 5:00251622
460.989/6/1979 13:00362922
470.9711/23/1992 3:00417922
480.976/29/1941 18:00196022
490.978/13/1958 4:00270922
500.976/20/1945 6:00212822
510.977/29/1973 16:00335322
520.969/23/2003 16:00463622
530.9610/12/1948 1:00226722
540.956/13/1956 18:00261222
550.958/23/1970 15:00320622
560.957/28/1911 13:0072222
570.959/25/1961 15:00285522
580.9510/12/2003 15:00463722
590.947/30/1926 6:00134422
600.948/10/1952 15:00244022
610.9310/14/1990 1:0040891.491
620.938/28/1976 1:0034971.491
630.938/18/1895 10:00641.491
640.926/11/1922 16:0011551.441
650.916/27/2002 18:0045871.391
660.917/27/1927 15:0013841.391
670.917/31/1913 2:008081.391
680.919/4/1905 3:004991.391
690.918/17/1898 18:002051.391
700.914/1/1934 5:0016651.391
          12.1% confidence in downward trend (τ = -0.009)


RankTotalDateEvent IDGauge ARI (y)Atlas ARI (y)
12.858/1/1985 2:0038729137
22.518/19/1955 9:0025714620
32.357/9/1921 2:0011183315
42.287/1/1915 5:008832813
52.258/6/1967 7:0030852612
62.217/10/1955 15:0025672412
72.019/10/1999 22:004473148
81.988/10/1917 6:00966137
91.928/24/1901 24:00335117
101.905/16/1954 4:002516116
111.897/28/2007 16:004798106
121.889/11/1954 12:002531106
131.839/1/1949 3:00230696
141.826/13/1998 14:00442195
151.828/21/1894 13:002595
161.808/5/1952 14:00243985
171.787/30/1926 5:00134485
181.788/25/2010 9:00494785
191.7310/9/1906 22:0053675
201.709/15/1904 7:0046664
211.709/2/2021 2:00543264
221.687/18/1912 17:0076664
231.677/30/2007 6:00479964
241.678/7/1908 14:0061664
251.678/16/1938 23:00185464
261.667/24/1926 8:00134354
271.657/10/2010 14:00494354
281.629/12/1960 14:00280954
291.628/18/1994 5:00425754
301.579/16/1933 8:00164543
311.556/4/1960 12:00280043
321.546/19/1942 23:00199943
331.538/3/2001 19:00455443
341.537/3/1916 17:0092343
351.518/4/1915 15:0088733
361.507/18/2012 17:00502933
371.507/28/1911 12:0072233
381.487/21/1938 17:00185233
391.489/2/1947 12:00221833
401.4712/6/1937 23:00181833
411.4410/13/1927 11:00139933
421.448/31/1954 9:00252933
431.4311/12/1947 12:00222332
441.4310/14/1990 1:00408932
451.436/29/2019 16:00533532
461.439/25/1961 14:00285532
471.418/26/1924 10:00124922
481.388/22/1899 19:0025622
491.386/13/1959 18:00275122
501.377/2/2021 1:00542022
511.356/12/1955 9:00256422
521.349/13/1918 5:00100222
531.3310/15/1930 7:00152722
541.335/28/2003 16:00462522
551.329/4/1905 2:0049922
561.328/25/1990 2:00408522
571.3110/12/1948 1:00226722
581.316/2/1987 13:00395022
591.319/22/1998 14:00443622
601.319/20/1899 8:0025822
611.307/12/2017 19:00523722
621.287/17/2018 14:00527822
631.286/27/2002 18:00458722
641.289/10/1924 4:00125322
651.2710/12/2003 14:00463722
661.268/12/1905 12:0049622
671.268/23/2020 17:00538322
681.2611/23/1992 5:00417922
691.256/20/1945 5:00212822
701.257/30/1946 20:00217722
          34.5% confidence in downward trend (τ = -0.027)


RankTotalDateEvent IDGauge ARI (y)Atlas ARI (y)
13.618/19/1955 9:0025719556
23.588/1/1985 1:0038729153
33.026/13/1998 14:0044214322
42.927/1/1915 5:008833719
52.638/10/1917 6:009662312
62.587/9/1921 19:0011182111
72.508/6/1967 7:0030851810
82.499/11/1954 11:0025311810
92.499/10/1999 21:0044731810
102.405/16/1954 4:002516158
112.387/10/1955 15:002567148
122.229/16/1933 7:001645106
132.207/30/1926 5:001344106
142.187/24/1926 8:00134396
152.167/28/2007 15:00479896
162.168/25/2010 8:00494796
172.139/2/2021 2:00543285
182.038/26/1924 10:00124975
192.038/21/1894 13:002575
202.039/1/1949 3:00230675
212.019/15/1904 6:0046664
221.9610/14/1990 1:00408964
231.958/18/1994 5:00425764
241.948/24/1901 24:0033554
251.939/12/1960 14:00280954
261.929/20/1899 8:0025854
271.899/10/1924 2:00125354
281.897/28/1911 12:0072254
291.8910/9/1906 22:0053654
301.8511/23/1992 3:00417943
311.858/4/1915 15:0088743
321.818/5/1952 13:00243943
331.816/19/1942 23:00199943
341.807/21/1938 16:00185243
351.7710/31/1895 24:007043
361.769/13/1918 5:00100233
371.7512/6/1937 22:00181833
381.757/17/2018 15:00527833
391.738/7/1908 14:0061633
401.728/16/1938 23:00185433
411.727/30/2007 6:00479933
421.728/31/1954 9:00252933
431.7010/15/1930 6:00152733
441.707/3/1916 16:0092333
451.697/18/1912 16:0076633
461.659/17/1995 15:00429632
471.657/10/2010 14:00494332
481.647/11/1959 5:00275832
491.636/4/1960 13:00280032
501.6110/20/1996 6:00435522
511.607/24/1988 5:00399322
521.609/16/1932 11:00160522
531.5911/12/1947 12:00222322
541.5910/12/2003 14:00463722
551.599/25/1961 14:00285522
561.589/2/1947 13:00221822
571.577/29/1973 14:00335322
581.567/18/2012 15:00502922
591.568/25/1990 1:00408522
601.568/3/2001 19:00455422
611.559/3/1919 19:00104322
621.529/14/1944 22:00208822
631.526/12/1955 8:00256422
641.5110/13/1927 11:00139922
651.507/29/1901 2:0033322
661.497/2/2021 0:00542022
671.496/13/1959 18:00275122
681.466/2/1982 7:00373122
691.469/4/1905 2:0049922
701.454/1/1934 3:00166522
          12.6% confidence in downward trend (τ = -0.010)


RankTotalDateEvent IDGauge ARI (y)Atlas ARI (y)
15.468/19/1955 6:002571131135
24.189/11/1954 10:0025315032
34.157/31/1985 22:0038724931
44.035/16/1954 1:0025164426
53.716/13/1998 14:0044213218
63.629/10/1999 18:0044732916
73.539/16/1933 5:0016452615
83.377/1/1915 3:008832212
93.3310/14/1990 1:0040892111
103.248/26/1924 9:0012491810
113.159/1/2021 23:005432169
123.1011/23/1992 3:004179158
133.059/10/1924 2:001253148
142.938/10/1917 5:00966127
152.8410/20/1996 6:004355106
162.799/15/1904 3:00466106
172.767/28/1911 10:0072296
182.7012/6/1937 19:00181885
192.667/9/1921 19:00111885
202.617/17/2018 14:00527875
212.608/6/1967 6:00308574
222.578/25/2010 6:00494774
232.579/20/1899 6:0025874
242.527/1/2021 21:00542064
252.4910/31/1895 22:007064
262.397/10/1955 15:00256753
272.399/17/1995 13:00429653
282.379/14/1944 20:00208843
292.3710/13/1895 15:006943
302.348/5/1952 14:00243943
312.339/16/1932 9:00160543
322.319/12/1960 12:00280943
332.309/13/1918 3:00100243
342.307/30/1926 4:00134443
352.297/24/1926 6:00134343
362.257/11/1959 2:00275833
372.258/18/1994 3:00425733
382.259/2/1947 9:00221833
392.197/24/1988 3:00399333
402.179/3/1972 9:00330232
412.176/20/1945 2:00212832
422.167/28/2007 15:00479832
432.148/4/1915 12:0088732
442.119/1/1949 1:00230632
452.118/24/1990 22:00408532
462.107/18/1912 17:0076622
472.097/30/1976 8:00349222
482.098/11/1990 11:00408222
492.098/21/1894 13:002522
502.076/16/2017 16:00523422
512.077/21/1938 13:00185222
522.078/31/1954 7:00252922
532.078/24/1901 21:0033522
542.0610/9/1906 19:0053622
552.0512/17/2000 15:00453122
562.036/6/2000 13:00450622
572.0310/15/1930 5:00152722
582.0212/17/1973 7:00337122
592.0111/12/1947 11:00222322
602.0110/8/1998 21:00443722
612.008/16/1938 23:00185422
621.9812/11/1992 23:00418222
631.985/9/1954 3:00251422
641.979/29/1907 7:0057422
651.963/31/1934 24:00166522
661.964/1/2004 13:00465422
671.968/30/1975 3:00345022
681.942/13/2008 13:00482422
691.949/16/1999 16:00447422
701.936/2/1982 6:00373122
          3.1% confidence in upward trend (τ = 0.002)


RankTotalDateEvent IDGauge ARI (y)Atlas ARI (y)
16.748/19/1955 5:002571134132
25.545/15/1954 21:0025166745
35.449/11/1954 5:0025316341
45.019/16/1933 2:0016454626
54.816/13/1998 7:0044213921
64.7310/20/1996 5:0043553720
74.379/10/1999 13:0044732714
84.307/31/1985 16:0038722513
94.119/9/1924 22:0012532111
104.029/1/2021 18:0054321910
113.978/26/1924 3:001249189
123.857/1/1915 3:00883168
133.6310/13/1990 18:004089126
143.596/6/2000 12:004506116
153.489/14/1904 24:00466105
163.467/28/1911 6:00722105
173.4311/22/1992 22:00417995
183.387/9/1921 2:00111895
193.2410/13/1895 9:006974
203.2312/12/1992 2:00418274
213.164/1/2004 13:00465464
223.1310/5/1995 19:00429964
233.085/31/1984 7:00382554
243.016/9/1931 16:00156053
253.019/3/1972 5:00330253
263.0010/5/1962 20:00289453
272.978/10/1917 3:0096643
282.924/21/1991 4:00411343
292.923/31/1934 18:00166543
302.9112/6/1937 16:00181843
312.9110/15/1930 5:00152743
322.877/1/2021 20:00542043
332.869/18/2004 3:00467643
342.869/16/1932 8:00160543
352.8511/12/1947 5:00222343
362.8412/11/2008 21:00487043
372.829/20/1899 5:0025833
382.8210/31/1895 18:007033
392.819/12/1960 5:00280933
402.8010/2/1984 1:00383733
412.796/7/2013 15:00506633
422.783/29/1953 21:00246533
432.775/8/1954 21:00251433
442.779/16/1999 10:00447433
452.769/17/1995 7:00429632
462.758/25/2010 2:00494732
472.737/17/2018 14:00527832
482.728/11/1990 7:00408232
492.704/30/1921 21:00111332
502.699/2/1947 8:00221832
512.695/14/2006 5:00474632
522.6812/9/2014 8:00513832
532.6810/14/2005 23:00472132
542.669/29/1907 2:0057422
552.6310/22/2014 22:00512922
562.627/21/1938 16:00185222
572.6011/25/1983 1:00379722
582.608/6/1967 6:00308522
592.609/3/1905 16:0049922
602.589/23/1994 4:00426322
612.588/31/1954 1:00252922
622.566/4/1982 22:00373222
632.5411/4/1955 18:00258322
642.543/13/1984 20:00381422
652.5410/18/1932 11:00160722
662.527/18/1912 16:0076622
672.526/15/1931 24:00156122
682.519/18/1936 18:00176122
692.4812/17/1970 3:00322222
702.4811/25/1971 5:00326122
          84.7% confidence in upward trend (τ = 0.086)


RankTotalDateEvent IDGauge ARI (y)Atlas ARI (y)
18.358/18/1955 13:002571150134
26.6510/20/1996 5:0043556139
36.047/9/1921 2:0011184124
45.826/13/1998 8:0044213520
55.745/15/1954 20:0025163319
65.649/10/1954 19:0025313117
75.639/16/1933 1:0016453117
85.1412/11/1992 16:0041822112
94.9610/12/1895 22:00691810
104.735/13/2006 10:004746148
114.719/10/1999 8:004473148
124.637/31/1985 14:003872138
134.467/1/1915 3:00883117
144.378/25/1924 23:001249106
154.294/1/2004 1:00465496
164.279/9/1924 22:00125396
174.2610/5/1962 11:00289496
184.259/3/1905 5:0049996
194.239/1/2021 11:00543295
204.196/9/1931 8:00156085
214.186/6/2000 9:00450685
224.175/31/1984 2:00382585
234.1712/26/1969 6:00318185
244.133/17/1968 22:00311185
254.036/5/1986 21:00390675
263.9110/13/1990 9:00408964
273.7611/22/1992 12:00417954
283.696/18/1922 23:00115653
293.6910/14/2005 18:00472153
303.6710/1/1984 14:00383743
313.6510/18/1932 12:00160743
323.645/25/1967 10:00307543
333.623/29/2010 15:00493343
343.608/9/1917 9:0096643
353.586/7/2013 7:00506643
363.579/14/1904 12:0046643
373.545/8/1954 12:00251443
383.533/13/2010 22:00493143
393.497/28/1911 5:0072233
403.408/24/2010 12:00494733
413.3410/15/1930 5:00152732
423.3212/11/2008 10:00487032
433.3211/11/1947 19:00222332
443.324/21/1991 1:00411332
453.3111/4/1955 7:00258332
463.315/21/1920 20:00107732
473.319/18/1936 10:00176132
483.3110/5/1995 14:00429932
493.309/15/1999 22:00447432
503.255/4/1922 12:00115232
513.236/4/1982 21:00373222
523.206/29/1921 20:00111722
533.174/30/1921 9:00111322
543.1710/30/1939 21:00190222
553.159/3/1972 4:00330222
563.144/27/1904 19:0044822
573.128/5/1952 14:00243922
583.1111/24/1983 17:00379722
593.118/1/1946 13:00217822
603.109/16/1932 5:00160522
613.103/29/1953 20:00246522
623.097/21/1938 6:00185222
633.095/9/1977 9:00352922
643.099/11/1960 18:00280922
653.099/28/1907 21:0057422
663.0812/6/1945 9:00214922
673.089/25/1961 4:00285522
683.043/31/1934 18:00166522
693.031/9/1935 18:00169422
702.994/4/1987 21:00394322
          81.0% confidence in upward trend (τ = 0.078)


RankTotalDateEvent IDGauge ARI (y)Atlas ARI (y)
111.948/18/1955 6:002571208278
27.8910/20/1996 4:0043554836
37.869/15/1933 24:0016454835
47.795/12/2006 23:0047464634
56.776/12/1998 16:0044212718
66.7410/5/1962 14:0028942717
76.333/13/2010 14:0049312113
86.047/9/1921 2:0011181811
96.033/31/2004 11:0046541711
105.986/4/1982 21:0037321710
115.745/15/1954 20:002516149
125.7210/12/1895 15:0069149
135.7212/11/1992 14:004182149
145.699/10/1954 2:002531149
155.6610/18/1932 8:001607149
165.357/1/1915 3:00883117
175.103/17/1968 15:00311196
185.006/5/1986 13:00390685
194.966/9/1931 3:00156085
204.944/27/1904 11:0044885
214.903/29/2010 3:00493385
224.719/10/1999 8:00447364
234.695/31/1984 2:00382564
244.689/2/1905 23:0049964
254.689/13/1944 1:00208864
264.637/31/1985 14:00387264
274.5412/26/1969 1:00318154
284.378/25/1924 23:00124954
294.354/5/1987 0:00394354
304.289/9/1924 5:00125343
314.246/6/2000 8:00450643
324.239/1/2021 11:00543243
334.227/1/2021 21:00542043
344.1610/13/2005 22:00472143
354.156/18/1922 6:00115643
364.125/4/1922 7:00115243
374.068/9/1917 5:0096633
384.047/21/1938 13:00185233
393.995/25/1967 5:00307533
403.989/16/1958 18:00271533
413.976/29/1921 19:00111733
423.948/19/1991 7:00412433
433.9110/13/1990 9:00408933
443.9011/22/1992 12:00417933
453.887/28/2007 15:00479832
463.854/16/1954 12:00251032
473.7711/9/1969 10:00317432
483.7412/10/2008 9:00487022
493.725/21/1920 18:00107722
503.698/23/2010 13:00494722
513.6811/4/1955 7:00258322
523.683/29/1953 9:00246522
533.6710/1/1984 14:00383722
543.669/15/1999 17:00447422
553.669/25/1991 0:00412822
563.6610/15/1955 3:00258022
573.653/29/2014 15:00510322
583.652/24/1981 9:00368122
593.636/7/2013 0:00506622
603.587/19/1959 19:00276022
613.579/14/1904 12:0046622
623.578/5/1952 8:00243922
633.565/27/1906 17:0052322
643.5510/8/1998 14:00443722
653.545/8/1954 12:00251422
663.5012/10/1936 10:00177022
673.496/26/1938 10:00184822
683.497/28/1911 5:0072222
693.4512/6/1945 8:00214922
703.438/11/1989 16:00403822
          78.3% confidence in upward trend (τ = 0.074)


RankTotalDateEvent IDGauge ARI (y)Atlas ARI (y)
112.478/17/1955 13:002570209238
28.345/12/2006 20:0047464932
37.9910/20/1996 4:0043554225
47.889/14/1933 20:0016454024
57.686/13/1998 2:0044213621
67.0110/5/1962 8:0028942515
76.983/13/2010 11:0049312514
86.536/4/1982 21:0037321911
96.047/9/1921 2:001118148
106.033/31/2004 11:004654148
115.995/30/1984 22:003825148
125.9110/17/1932 16:001607137
135.829/9/1954 3:002531127
145.745/15/1954 20:002516117
155.7312/11/1992 4:004182117
165.7210/12/1895 15:0069117
175.437/1/1915 3:0088395
185.356/5/1986 13:00390695
195.277/21/1938 13:00185285
205.224/27/1904 3:0044885
215.176/8/1931 15:00156075
225.113/17/1968 15:00311174
235.024/4/1987 17:00394374
244.999/8/1999 7:00447264
254.989/12/1944 19:00208864
264.933/29/2010 3:00493364
274.9311/22/1953 23:00249064
284.927/1/2021 12:00542064
294.816/18/1922 22:00115654
304.766/29/1921 19:00111754
314.689/2/1905 23:0049953
324.637/31/1985 14:00387253
334.5912/26/1969 1:00318143
344.527/30/1946 20:00217743
354.438/22/2010 12:00494743
364.378/25/1924 23:00124943
374.363/13/1953 6:00246043
384.318/19/1991 1:00412433
394.289/9/1924 5:00125333
404.258/30/2021 23:00543233
414.2410/8/1998 13:00443733
424.246/6/2000 8:00450633
434.1610/13/2005 22:00472132
444.125/4/1922 7:00115232
454.116/26/1938 10:00184832
464.0611/22/1992 12:00417932
474.068/9/1917 5:0096632
484.047/28/2007 2:00479832
493.995/25/1967 5:00307522
503.9810/14/1955 19:00258022
513.989/16/1958 18:00271522
523.968/6/1976 19:00349422
533.9110/13/1990 9:00408922
543.8912/9/2008 21:00487022
553.878/11/1989 6:00403822
563.854/16/1954 12:00251022
573.8512/10/1936 6:00177022
583.825/8/1954 12:00251422
593.829/17/1938 18:00185822
603.819/23/1991 14:00412822
613.8111/9/1969 10:00317422
623.792/24/1981 0:00368122
633.789/15/1900 24:0029822
643.725/21/1920 18:00107722
653.7211/6/1963 5:00293822
663.7111/3/1955 18:00258322
673.713/29/1953 9:00246522
683.6812/3/1925 5:00131422
693.6710/1/1984 14:00383722
703.673/28/2014 16:00510322
          74.6% confidence in upward trend (τ = 0.068)


RankTotalDateEvent IDGauge ARI (y)Atlas ARI (y)
112.478/17/1955 13:002570190198
28.865/12/2006 20:0047465834
38.0710/20/1996 4:0043554121
48.066/12/1998 16:0044214121
57.969/14/1933 5:0016453920
67.0110/5/1962 8:0028942412
76.983/13/2010 11:0049312411
86.776/4/1982 17:0037322110
96.265/29/1984 21:003824157
106.063/31/2004 13:004654137
116.047/9/1921 2:001118137
125.9110/17/1932 16:001607126
135.909/7/1954 18:002530126
145.867/20/1938 8:001851126
155.7910/12/1895 15:0069116
165.755/12/1954 18:002516115
175.7312/11/1992 4:004182115
185.447/1/1915 3:0088385
195.394/27/1904 3:0044884
205.366/5/1986 13:00390684
215.319/7/1999 3:00447184
225.306/7/2013 7:00506684
235.246/7/1931 12:00156074
245.206/18/1922 6:00115674
255.173/17/1968 16:00311174
265.144/4/1987 9:00394374
275.086/30/2021 18:00542064
284.989/12/1944 19:00208863
294.933/29/2010 3:00493353
304.9311/22/1953 23:00249053
314.816/29/1921 1:00111753
324.699/2/1905 23:0049943
334.6312/24/1969 6:00318143
344.637/31/1985 14:00387243
354.633/12/1953 22:00246043
364.527/30/1946 20:00217742
374.488/22/2010 10:00494742
384.4611/7/1969 19:00317332
394.378/25/1924 23:00124932
404.3510/8/1998 13:00443732
414.3510/11/2005 16:00472132
424.329/12/1904 1:0046532
434.318/19/1991 1:00412432
444.308/6/1976 19:00349432
454.289/9/1924 5:00125332
464.2511/22/1992 13:00417932
474.258/30/2021 23:00543232
484.243/8/1983 18:00376532
494.246/6/2000 8:00450632
504.2212/5/2014 23:00513732
514.125/4/1922 7:00115222
524.116/26/1938 10:00184822
534.068/9/1917 5:0096622
544.047/28/2007 2:00479822
554.029/17/1938 18:00185822
564.0010/14/1955 2:00258022
574.001/8/1956 18:00258922
583.995/25/1967 5:00307522
593.989/16/1958 18:00271522
603.9311/8/1947 19:00222222
613.9310/10/1990 19:00408922
623.929/23/1975 6:00345222
633.918/11/1989 6:00403822
643.8912/9/2008 21:00487022
653.8912/10/1936 5:00177022
663.8711/7/1932 1:00161022
673.863/29/1953 9:00246522
683.854/16/1954 12:00251022
693.849/6/1896 22:0010821
703.8312/1/1925 11:00131321
          81.9% confidence in upward trend (τ = 0.080)


RankTotalDateEvent IDGauge ARI (y)Atlas ARI (y)
113.528/17/1955 13:002570170201
210.375/9/2006 13:0047456449
38.966/2/1982 2:0037313622
48.456/12/1998 16:0044212817
58.379/10/1999 8:0044732716
68.0710/20/1996 4:0043552413
77.969/14/1933 9:0016452213
87.955/15/1954 20:0025162213
97.753/31/1987 3:0039422011
107.677/18/1938 9:0018511911
117.645/26/1984 20:0038231910
127.526/7/2013 9:0050661710
137.156/9/1931 8:001560148
147.079/10/1954 19:002531138
157.0610/5/1962 8:002894138
167.063/11/2010 11:004931138
176.743/12/1968 18:003110116
186.4012/11/1992 4:00418295
196.307/9/1921 2:00111885
206.293/31/2004 11:00465485
216.1010/8/2005 15:00472074
226.096/5/1986 14:00390674
236.0310/8/1895 12:006874
245.976/1/2006 20:00474964
255.9412/22/1969 6:00318064
265.9110/17/1932 16:00160764
275.909/20/1961 23:00285464
285.667/26/1985 10:00387153
295.639/13/1987 10:00395953
305.627/1/1915 3:0088353
315.477/1/2021 12:00542043
325.4711/4/1969 12:00317243
335.468/5/1952 7:00243943
345.444/25/1904 4:0044843
355.2410/8/1998 13:00443732
365.245/4/1998 22:00441532
375.239/19/1991 13:00412732
385.206/18/1922 6:00115632
395.198/29/1905 4:0049832
405.141/8/1956 16:00258932
415.126/15/1903 9:0040932
425.1210/13/1990 9:00408932
435.111/20/1979 21:00360232
445.113/24/1953 15:00246332
455.103/26/2010 4:00493332
465.0911/7/1968 12:00313332
475.049/22/1907 24:0057332
484.989/12/1944 19:00208832
494.9711/22/1953 23:00249032
504.946/26/1921 9:00111732
514.943/12/1953 22:00246032
524.937/15/1959 1:00275922
534.926/6/2000 8:00450622
544.888/17/1994 22:00425722
554.877/24/1926 6:00134322
564.847/21/1988 22:00399222
574.779/5/1924 21:00125222
584.758/25/1924 23:00124922
594.728/1/1946 11:00217822
604.7112/2/2014 22:00513622
614.7111/1/1951 6:00239522
624.6812/10/1936 7:00177022
634.602/19/1981 21:00368022
644.604/12/1933 8:00162922
654.604/16/1929 9:00147322
664.5711/21/1992 15:00417922
674.553/7/1983 3:00376521
684.515/3/1954 18:00251321
694.519/8/1904 20:0046521
704.4911/20/1950 20:00235021
          89.5% confidence in upward trend (τ = 0.097)


RankTotalDateEvent IDGauge ARI (y)Atlas ARI (y)
114.258/17/1955 13:002570145196
210.805/9/2006 13:0047454940
310.576/29/1921 22:0011174535
49.805/29/1982 5:0037303323
59.585/7/1954 2:0025143020
69.539/27/1962 10:0028933020
78.959/7/1999 3:0044712314
88.943/13/2010 12:0049312314
98.486/8/1998 18:0044211811
108.466/7/1931 12:0015601811
118.2810/20/1996 4:0043551610
128.039/9/1933 2:001645149
137.903/31/1987 3:003942138
147.816/30/2021 18:005420128
157.787/18/1938 9:001851127
167.765/23/1984 19:003823127
177.739/7/1954 11:002530127
187.706/7/2013 0:005066127
197.497/1/1915 3:00883106
207.0611/3/1969 2:00317185
216.973/10/1968 18:00311075
226.9110/17/1932 24:00160775
236.6412/3/1992 2:00418164
246.626/5/1986 13:00390664
256.587/11/1959 5:00275864
266.483/26/2004 23:00465454
276.466/1/2006 20:00474953
286.4610/7/2005 23:00472053
296.2212/22/1969 6:00318043
306.216/11/1922 16:00115543
316.143/2/1983 4:00376443
326.1010/8/1895 12:006843
336.098/23/2021 17:00543143
346.028/13/1994 7:00425643
355.987/30/1946 20:00217743
365.965/2/1998 0:00441443
375.9212/10/1936 10:00177032
385.909/20/1961 23:00285432
395.867/17/1988 21:00399032
405.856/12/1903 11:0040832
415.808/1/1952 4:00243832
425.779/13/1987 10:00395932
435.767/22/1985 4:00387032
445.701/8/1956 16:00258932
455.704/19/1904 21:0044732
465.674/12/1929 11:00147232
475.649/11/1960 13:00280932
485.589/1/1924 10:00125032
495.5411/29/1945 2:00214832
505.5211/21/1971 7:00326022
515.5111/28/1937 5:00181722
525.453/23/2010 12:00493222
535.4511/15/1983 22:00379522
545.446/2/2000 18:00450522
555.429/12/1918 19:00100222
565.423/21/2001 20:00454022
575.371/17/1979 16:00360222
585.377/24/1926 6:00134322
595.309/12/1938 21:00185622
605.308/9/1917 5:0096622
615.283/24/1953 15:00246322
625.2610/13/1990 20:00408922
635.269/19/1991 13:00412722
645.268/25/1905 5:0049822
655.253/28/2017 16:00522322
665.2410/8/1998 13:00443722
675.2012/17/1970 0:00322221
685.2011/7/1968 12:00313321
695.198/6/1976 19:00349421
705.1112/1/2014 17:00513621
          92.5% confidence in upward trend (τ = 0.107)


RankTotalDateEvent IDGauge ARI (y)Atlas ARI (y)
116.818/11/1955 17:002569130193
214.483/11/2010 11:0049316872
312.865/3/1954 9:0025133932
412.215/1/2006 22:0047443123
512.046/2/1982 2:0037312921
611.488/28/1933 17:0016422316
711.246/26/1921 9:0011172115
810.926/12/1998 16:0044211812
910.869/17/1962 20:0028921812
1010.598/31/1954 0:0025291610
1110.5811/23/1992 2:0041791610
1210.5010/8/1996 17:0043541510
1310.093/12/1953 22:002460128
1410.056/22/2021 15:005419128
159.958/25/1924 23:001249128
169.855/29/2013 22:005064117
179.4012/8/1969 4:00317796
189.369/6/1999 12:00447195
199.153/31/1987 3:00394285
209.117/10/1938 2:00185075
219.001/6/1979 4:00360075
228.9510/7/2005 23:00472074
238.906/7/1931 12:00156074
248.899/8/1918 16:00100174
258.863/26/2004 23:00465464
268.809/15/1961 1:00285364
278.7310/18/1932 10:00160764
288.713/1/1983 20:00376464
298.6210/12/1895 15:006964
308.297/30/1946 20:00217753
318.245/13/1984 22:00382343
328.1211/3/1969 1:00317143
338.127/2/1959 0:00275643
348.0911/23/1953 3:00249043
358.098/19/2021 8:00542943
368.0710/27/2018 11:00529443
378.067/21/1976 12:00349043
387.962/29/1968 18:00310943
397.901/7/1958 15:00267642
407.841/7/1978 8:00355932
417.795/31/1986 23:00390532
427.767/1/1915 3:0088332
437.7512/2/1936 17:00176832
447.6911/10/1983 21:00379432
457.653/13/1993 11:00419332
467.629/16/1958 18:00271532
477.536/11/1922 12:00115532
487.3911/18/1945 5:00214632
497.387/10/1988 3:00398832
507.373/31/1933 22:00162632
517.284/23/1998 14:00441322
527.224/9/1929 1:00147122
537.217/22/2008 21:00484922
547.204/9/1904 19:0044422
557.117/24/1926 8:00134321
567.056/7/2006 1:00475021
577.022/17/1998 23:00440321
587.028/3/1994 10:00425521
596.996/8/1903 6:0040721
606.9910/4/1990 19:00408821
616.999/1/1987 2:00395721
626.992/12/1900 6:0027621
636.9611/24/2014 7:00513421
646.9310/23/1953 9:00248721
656.909/17/1995 7:00429621
666.885/30/1959 18:00274921
676.818/2/1952 18:00243821
686.7711/25/2008 2:00486821
696.768/25/1922 15:00116621
706.761/30/2008 11:00482121
          97.5% confidence in upward trend (τ = 0.134)


RankTotalDateEvent IDGauge ARI (y)Atlas ARI (y)
117.195/9/2006 13:0047458892
217.168/7/1955 4:0025688891
315.363/11/2010 11:0049315041
415.254/16/1954 12:0025104839
513.655/23/1982 2:0037292719
613.396/26/1938 10:0018482416
712.936/29/1921 24:0011172013
812.868/20/1933 1:0016401913
912.193/15/1953 11:002461149
1012.0511/21/1992 15:004179139
1111.945/31/1998 23:004419138
1211.9110/11/1932 15:001607138
1311.575/19/2013 18:005062117
1411.559/22/1996 16:004351117
1511.438/12/1924 10:001248106
1611.353/31/1987 3:003942106
1711.238/4/2021 19:00542796
1811.109/14/1962 18:00289296
1911.047/30/1946 20:00217785
2010.908/31/1954 0:00252985
2110.893/31/2004 11:00465485
2210.621/8/1978 21:00355974
2310.606/14/2021 9:00541874
2410.545/3/1984 19:00382164
2510.519/6/1999 12:00447164
2610.501/1/1979 15:00359964
2710.3910/27/1953 22:00248864
2810.282/11/1983 23:00376264
2910.0510/6/1955 12:00257953
309.9711/15/1983 22:00379553
319.946/7/1931 12:00156053
329.906/22/1959 9:00275443
339.8611/2/2018 23:00529643
349.8612/8/1969 3:00317743
359.6712/29/1957 5:00267443
369.592/15/1984 0:00380942
379.5910/8/2005 1:00472042
389.5610/8/1895 12:006842
399.537/29/1976 16:00349242
409.403/14/1958 8:00268332
419.288/29/1918 12:00100032
429.2511/10/1945 21:00214432
439.235/21/1920 18:00107732
449.187/18/2008 21:00484832
459.183/31/1904 20:0044232
469.093/5/1993 0:00419132
479.083/20/1933 10:00162432
489.046/5/1986 13:00390632
499.047/18/1926 18:00134232
509.009/15/1961 1:00285332
518.986/9/1922 16:00115532
528.9611/24/1936 4:00176732
538.8911/13/2014 23:00513222
548.8611/8/1972 10:00331122
558.8111/7/1968 12:00313322
568.773/9/1901 8:0031122
578.742/4/1900 23:0027421
588.727/1/1915 3:0088321
598.677/16/1989 23:00403221
608.588/13/1919 24:00103821
618.589/7/1987 6:00395821
628.531/8/1956 16:00258921
638.444/17/1998 12:00441121
648.399/7/1958 17:00271421
658.3912/3/1901 3:0034321
668.3011/15/1981 6:00370521
678.2811/19/1986 6:00392421
688.263/22/1903 13:0040121
698.264/20/1901 16:0031921
708.2511/25/2008 3:00486821
          98.7% confidence in upward trend (τ = 0.149)


RankTotalDateEvent IDGauge ARI (y)Atlas ARI (y)
119.645/12/2006 20:0047468486
218.838/11/1955 17:0025696561
318.222/24/2010 1:0049295346
418.164/16/1954 12:0025105245
516.043/12/1953 22:0024602418
615.425/4/1998 1:0044151914
715.399/7/1996 19:0043491914
815.045/20/1982 15:0037291612
914.966/11/1938 10:0018461612
1014.886/6/1959 14:0027501511
1114.495/28/2021 19:0054151310
1214.379/27/1962 3:002893129
1314.346/26/1921 9:001117129
1414.2110/23/1953 9:002487118
1514.088/4/1933 3:001638118
1613.729/6/1999 12:00447197
1713.532/6/1983 20:00376186
1813.5311/3/1992 4:00417686
1913.428/3/1954 10:00252786
2013.2410/13/1895 1:006975
2113.147/31/1924 16:00124575
2213.105/8/1931 17:00155475
2313.002/15/1984 0:00380965
2413.0012/9/1957 4:00267065
2512.967/27/2021 19:00542665
2612.787/1/1915 3:0088364
2712.753/22/1987 0:00394164
2812.695/8/2013 23:00506164
2912.5311/3/1983 16:00379354
3012.509/28/1932 4:00160654
3112.483/7/1933 16:00162254
3212.383/20/2004 20:00465354
3312.2911/19/1986 2:00392453
3412.2110/21/2018 8:00529343
3512.153/20/1901 20:0031343
3612.1510/6/1955 12:00257943
3712.124/23/1984 20:00382043
3812.1010/8/2005 16:00472043
3912.0412/17/1978 6:00359743
4011.852/12/1993 19:00418843
4111.847/21/1976 12:00349043
4211.748/21/1961 3:00285033
4311.737/21/1946 5:00217633
4411.6612/12/1977 19:00355532
4511.5011/3/1969 1:00317132
4611.5010/23/1945 22:00214232
4711.482/28/1958 1:00268232
4811.3511/8/1972 10:00331132
4911.359/16/1958 18:00271532
5011.182/4/1900 21:0027432
5111.111/30/2008 12:00482122
5211.0110/4/1995 10:00429922
5310.8911/18/1994 17:00426422
5410.898/15/1991 12:00412422
5510.864/21/1920 18:00107122
5610.8011/14/1981 23:00370522
5710.777/19/1927 5:00138321
5810.774/15/1967 6:00306521
5910.7412/4/1993 20:00422421
6010.6811/24/1901 10:0034221
6110.6110/28/1963 17:00293621
6210.598/28/1987 9:00395621
6310.585/31/1986 23:00390521
6410.576/27/2008 14:00484521
6510.564/7/1904 9:0044321
6610.5311/24/1936 4:00176721
6710.483/6/1903 13:0039921
6810.468/13/1994 7:00425621
6910.4010/29/2014 20:00513021
7010.4011/7/1968 12:00313321
          97.8% confidence in upward trend (τ = 0.137)


RankTotalDateEvent IDGauge ARI (y)Atlas ARI (y)
123.348/18/1955 6:002571109170
222.595/1/2006 22:00474488120
319.674/16/1954 12:0025103537
419.112/16/2010 9:0049282929
518.843/4/1953 0:0024592626
618.185/2/1998 0:0044142020
717.9211/3/1969 1:0031711918
817.925/29/1982 13:0037301918
917.216/30/2021 18:0054201414
1017.0010/23/1953 9:0024871312
1116.985/26/1938 15:0018441312
1216.975/23/1959 21:0027491312
1316.9311/30/1957 13:0026691312
1416.658/23/1996 20:0043461111
1516.583/1/1983 18:0037641110
1615.912/20/1933 7:00161988
1715.919/25/1962 23:00289388
1815.869/16/1932 5:00160588
1915.816/26/1921 9:00111787
2015.643/21/1901 11:0031377
2115.337/20/1933 22:00163766
2215.251/30/1984 22:00380666
2315.183/14/1958 8:00268366
2415.022/12/1993 13:00418865
2515.0010/8/1895 12:006865
2614.997/21/1954 4:00252465
2714.984/4/1984 23:00381865
2814.959/6/1999 12:00447155
2914.9211/27/1978 17:00359355
3014.924/26/1931 6:00155355
3114.7011/6/1986 1:00392155
3214.6110/23/1983 20:00379254
3314.615/29/2013 4:00506354
3414.5911/17/1992 15:00417954
3514.5311/28/1977 3:00355254
3614.524/21/1920 6:00107154
3714.499/17/1995 7:00429644
3814.426/26/1915 8:0088344
3914.2811/4/1945 5:00214344
4014.2611/15/1981 3:00370544
4114.2210/11/2014 8:00512744
4213.963/31/2004 11:00465443
4313.917/25/1924 15:00124533
4413.837/15/1919 23:00103333
4513.758/4/1958 16:00270633
4613.733/1/1987 3:00394033
4713.4311/2/1972 10:00331032
4813.439/18/2018 2:00528732
4913.385/4/1922 7:00115232
5013.2310/7/2005 23:00472032
5113.238/19/1991 6:00412432
5213.1511/2/1968 4:00313322
5313.101/11/2008 5:00481822
5413.078/7/2011 2:00499022
5512.851/20/1900 9:0027122
5612.794/11/1972 10:00328222
5712.706/15/2008 8:00484122
5812.669/23/1975 2:00345222
5912.617/13/1927 17:00138222
6012.579/1/2021 11:00543222
6112.509/14/1989 20:00404122
6212.504/21/1928 24:00142322
6312.474/3/1990 11:00406521
6412.413/28/1967 7:00306321
6512.4011/24/1936 5:00176721
6612.397/21/1976 12:00349021
6712.387/27/1994 2:00425421
6812.384/1/1904 11:0044221
6912.384/18/2000 19:00449721
7012.358/21/1961 3:00285021
          99.2% confidence in upward trend (τ = 0.159)

Frequency Estimates
DurationAverage Recurrence IntervalGEVConstraint
adjustment
1-mo3-mo6-mo1-y2-y5-y10-y25-y50-y100-y200-y500-y1000-yξακ
Event1.001.742.282.753.634.635.526.998.3910.112.315.919.43.3690.6619-0.3097 1.
1-hour.270.450.580.7961.001.221.401.681.932.222.563.113.610.94520.1529-0.2368 1.08
2-hour.410.650.8401.041.341.641.882.232.552.903.313.954.511.2570.2180-0.2003 1.04
3-hour.510.8001.011.211.541.902.212.693.133.654.285.306.261.4470.2485-0.2603 1.02
6-hour.6901.111.371.682.012.432.813.494.175.056.208.2410.31.9120.2549-0.3757 1.01
12-hour.8601.411.772.172.553.043.504.305.126.197.5910.112.72.4390.2947-0.3871 1.00
1-day.9701.632.082.503.093.774.375.376.337.529.0111.514.02.9130.4438-0.3165 1.00
2-day1.051.782.312.813.554.445.256.627.969.6611.815.519.33.3350.5639-0.3430 1.00
3-day1.111.912.503.003.794.725.566.988.3710.112.316.119.93.5550.5955-0.3369 1.00
4-day1.162.072.683.253.964.845.657.078.4910.312.716.921.13.7460.5445-0.3684 1.00
7-day1.272.413.143.864.705.706.628.199.7311.714.218.522.84.4480.6377-0.3470 1.00
10-day1.312.793.584.305.276.417.439.1610.812.915.620.124.64.9840.7333-0.3311 1.00
20-day1.313.674.825.686.988.429.6611.713.515.818.623.227.66.6050.9679-0.2854 1.00
30-day1.314.245.867.028.5110.111.413.515.417.620.324.628.58.0881.102-0.2505 1.00
45-day1.314.567.168.8910.712.513.916.118.020.222.826.730.210.191.308-0.2061 1.00
60-day1.314.568.3710.612.714.816.418.720.823.025.629.533.012.121.531-0.1785 1.00
90% confidence intervals
Duration1-y2-y5-y10-y25-y50-y100-y200-y500-y1000-y
1-hour0.77-0.810.97-1.041.16-1.281.30-1.511.49-1.901.65-2.291.81-2.791.97-3.422.22-4.572.41-5.71
2-hour1.00-1.071.30-1.381.57-1.721.76-2.002.02-2.472.22-2.922.42-3.492.63-4.172.93-5.303.16-6.43
3-hour1.16-1.231.50-1.591.82-2.012.06-2.372.40-3.022.67-3.682.95-4.533.28-5.593.74-7.494.12-9.46
6-hour1.63-1.711.96-2.072.32-2.562.62-3.053.08-4.023.47-5.113.88-6.754.38-9.155.12-14.005.75-19.36
12-hour2.11-2.202.50-2.632.91-3.203.25-3.773.77-4.944.22-6.264.75-8.125.39-10.836.38-16.277.19-22.59
1-day2.42-2.542.99-3.193.60-3.984.06-4.754.73-6.155.29-7.705.91-9.756.59-12.587.54-17.928.38-23.97
2-day2.71-2.873.45-3.694.21-4.724.84-5.735.73-7.606.51-9.687.37-12.628.30-16.759.72-24.5410.96-33.40
3-day2.90-3.073.67-3.934.46-5.005.11-6.066.05-8.056.87-10.147.80-12.948.77-16.8510.29-24.3811.60-32.52
4-day3.15-3.303.85-4.094.61-5.115.25-6.176.17-8.206.97-10.527.91-13.738.96-18.6110.58-27.6411.97-37.92
7-day3.74-3.924.57-4.855.44-6.016.14-7.187.16-9.448.05-11.939.04-15.2610.19-20.1411.90-29.6813.41-40.75
10-day4.17-4.385.12-5.446.13-6.746.93-8.018.05-10.429.00-13.1310.11-16.7711.28-22.0813.09-32.2614.69-43.03
20-day5.52-5.796.80-7.198.07-8.829.06-10.3510.45-13.1311.56-16.1112.77-20.1214.07-25.5116.01-35.7017.61-45.70
30-day6.82-7.148.28-8.759.70-10.5710.80-12.1712.29-15.0413.51-17.8714.79-21.4516.14-26.3118.12-34.6519.71-42.78
45-day8.64-9.0410.42-10.9612.07-12.9813.24-14.7714.81-17.7416.04-20.5817.30-24.1918.54-28.5120.34-35.9521.73-43.29
60-day10.28-10.7612.40-13.0314.30-15.3415.60-17.2717.30-20.3418.61-23.2919.90-26.9821.23-31.3223.07-38.6824.60-45.85

GEV distribution fitted using L-moments for ≥1 year
Empirical results for periods <1 year
NOAA Atlas 14 frequency estimates
Input file: c:\calcs\metdata\2022merged\KBOS.dat
Analysis completed: 1/10/2022 16:08
Elapsed time : 123.7 seconds
Developed by Mitch Heineman, Ajay Prasad, Constantine Karos, and Masoud Soltani. CDM Smith, 1991-2022