"Figure 2. Unusually High Annual Precipitation in the Contiguous 48 States, 1895-2023",,
Source: EPA's Climate Change Indicators in the United States: www.epa.gov/climate-indicators,,
"Data source: NOAA, 2024",,
Web update: June 2024,,
Units: percent of land area,,
,,
Year,Fraction of Area >=2.0,9-yr Moving Average
1895,0,0.003849869
1896,0.01025769,0.006076364
1897,0.014623875,0.006628166
1898,0,0.005600379
1899,0.001667263,0.004838556
1900,0.005235716,0.005269209
1901,0.010139568,0.00601775
1902,0.006461266,0.007279498
1903,0.001633845,0.012043633
1904,0,0.021622537
1905,0.068688338,0.030688094
1906,0.042506778,0.032140968
1907,0.016181289,0.026117973
1908,0.010419486,0.018504751
1909,0.023579584,0.012758181
1910,0,0.008581948
1911,0.00450449,0.005886332
1912,0.005511002,0.006249583
1913,0,0.011236849
1914,0.006259765,0.018728017
1915,0.073126984,0.022260434
1916,0.002526207,0.018622872
1917,0,0.013072639
1918,0,0.011314474
1919,0.039175229,0.011705049
1920,0.001323487,0.011143226
1921,0,0.011686115
1922,0.003625363,0.014997819
1923,0.057771552,0.01708634
1924,0,0.015495722
1925,0,0.015334164
1926,0,0.020841801
1927,0.077310859,0.027049654
1928,0.010377465,0.026587372
1929,0.031215775,0.019367065
1930,0,0.010878933
1931,0,0.005406238
1932,0.002453084,0.003478287
1933,0.007397633,0.003367324
1934,0,0.003571616
1935,0.005118257,0.003864281
1936,0.003408311,0.004401296
1937,0.005034546,0.005743669
1938,0.009048353,0.011935735
1939,0,0.029511802
1940,0.004605075,0.054700489
1941,0.232838503,0.067835914
1942,0.012199907,0.055862716
1943,0,0.031552378
1944,0.003377871,0.015478664
1945,0.021775339,0.012331491
1946,0.001131913,0.015014391
1947,0.029969712,0.017538251
1948,0.026306299,0.018112465
1949,0,0.017754977
1950,0.023370803,0.017384739
1951,0.031673702,0.015776273
1952,0,0.012243446
1953,0.006510235,0.008723077
1954,0.011261886,0.007863369
1955,0,0.011336452
1956,0,0.017877744
1957,0.072895705,0.022129535
1958,0.000191244,0.020133543
1959,0.014896182,0.014619561
1960,0.002603962,0.01048406
1961,0.017221881,0.009219646
1962,0.002506354,0.010750756
1963,0,0.014716962
1964,0.044332198,0.017914485
1965,0.022343777,0.016467542
1966,0,0.011388921
1967,0.0010171,0.006996673
1968,0.012908966,0.004914099
1969,0,0.004288986
1970,0.002095742,0.006279896
1971,0,0.0133805
1972,0.015660827,0.023717918
1973,0.081607561,0.030430993
1974,0,0.029494213
1975,0.041739486,0.025086779
1976,0,0.024519275
1977,0.015326978,0.028957484
1978,0.07986916,0.031437905
1979,0.022044338,0.027032948
1980,0,0.023295432
1981,0,0.032371109
1982,0.030553039,0.051029876
1983,0.189338779,0.060170731
1984,0,0.049963989
1985,0.003026154,0.031594674
1986,0.041530706,0.018357323
1987,0,0.012020902
1988,0,0.010931687
1989,0.004776135,0.015014592
1990,0.039388311,0.021797212
1991,0.028721994,0.02762313
1992,0.011330707,0.031144573
1993,0.073527339,0.03280357
1994,0,0.03453516
1995,0.0282194,0.038232853
1996,0.087061653,0.04188977
1997,0.005545743,0.040929849
1998,0.074667193,0.03335724
1999,0.006048338,0.021555908
2000,0,0.011236858
2001,0,0.008219731
2002,0,0.013473731
2003,0.033572576,0.021503408
2004,0.047239238,0.02537206
2005,0.014068341,0.023971496
2006,0.010911492,0.022379738
2007,0.022140953,0.024645738
2008,0.037959937,0.030140085
2009,0.031819947,0.036763116
2010,0.02897081,0.041976411
2011,0.094517188,0.041966244
2012,0.004227881,0.036593479
2013,0.034228364,0.032358713
2014,0,0.03398203
2015,0.09285555,0.038866849
2016,0.015681341,0.045836126
2017,0.015609873,0.058536491
2018,0.115254914,0.072652403
2019,0.126019499,0.073593034
2020,0.048942236,0.055454187
2021,0.005952716,0.029975378
2022,0,0.011534913
2023,0.001352604,0.003534015