Dawes County

Population 7,858 (2025) 1,396 sq mi

Large wildfires have burned 100,089 acres of Dawes County since 1984, 5th most of 93 counties in Nebraska; the largest was the West Ash Fire in 2012.

Hazard fingerprint for Dawes County Tornado: 36th percentile. Tropical: 0th percentile. Wildfire: 78th percentile. Flood: 7th percentile. Hail & wind: 30th percentile. Heat: 13th percentile. Cold: 71th percentile. Winter: 75th percentile. TORTROPFIREFLOODSEVEREHEATCOLDWINTER

Hazard fingerprint Each spoke is this county’s percentile among U.S. counties where that hazard occurs. How it is computed

2026
  • Tornado damage paths since 195039
  • Wildfire burn scars since 198410

At a glance

The record for Dawes County in eight numbers. Each links to its section below.

Acres burned since 1984

100,089

5th of 93 in Nebraska

10 large fires; the largest was West Ash, 2012

Details

Tornadoes since 1950

39

33rd of 93 in Nebraska

About as many as the typical Nebraska county

Details

Strongest tornado

F2

June 19, 1983, 22.0 mile path

Federal disaster declarations

12

Most recent: South Fork Fire, 2026

Details

Record high

114°F

Reached 2 times, most recently August 27, 1894

Details

Record low

−44°F

February 7, 1895

Details

Snowiest season

88.3in

Winter of 2019-20

Costliest event since 1996

$400K

Lightning, August 2, 1996

Details

Tornadoes

About one every 1.9 years since 1950, none rated F3/EF3 or stronger.

Strongest

June 19, 1983

F2, 22.0 mile path

40 yards wide.

Most recent

Thursday, July 2, 2020

EF2, 3.4 mile path

6 years ago.

Tornadoes by decade Doppler radar era² 1950s: 3 3 1960s: 6 6 1970s: 4 4 1980s: 8 8 1990s: 8 8 2000s: 4 4 2010s: 5 5 2020s: 1 1 1950s1960s1970s1980s1990s2000s2010s2020s
Recorded tornadoes per decade. The 2020s are incomplete.
Tornadoes by month J: 0 F: 0 M: 0 A: 1 M: 8 J: 18 18 J: 9 A: 3 S: 0 O: 0 N: 0 D: 0 JFMAMJJASOND
By month of occurrence, all years.

Every recorded tornado

Tornadoes in Dawes County since 1950
Jul 2, 2020EF23.425000
Jun 12, 2017EFU1.12500
Jun 11, 2013EF00.84000
Jun 11, 2013EF11.04000
May 17, 2013EF02.75000
Aug 29, 2011EF00.32500
Jul 8, 2004F00.03000
May 23, 2003F00.43000
Aug 24, 2002F00.22000
Jun 12, 2001F00.22500
Jun 4, 1999F00.13000
Jul 8, 1998F00.13000
Jun 8, 1994F00.52000
Jul 16, 1993F00.11300
Jul 15, 1993F00.51000
May 5, 1993F00.15000
Jun 30, 1992F00.52000
Jun 30, 1992F00.12000
Jul 14, 1989F00.12000
Jul 31, 1985F10.210000
Jun 19, 1983F00.11700
Jun 19, 1983F222.04000
Aug 23, 1982F111.04000
Jun 4, 1982F00.13000
Jun 4, 1982F20.84000
Jun 4, 1982F00.12000
Jun 26, 1979F00.11000
Jul 28, 1976F10.12000
Jun 25, 1975F168.02000
Apr 27, 1975F10.51000
May 24, 1965F10.11000
May 15, 1963F10.21000
May 14, 1962F218.388000
Jun 27, 1960F01.01000
Jun 27, 1960F20.11000
Jun 20, 1960F10.11000
Jul 1, 1958F00.11000
May 30, 1958F00.11000
May 22, 1954F00.11000
  1. Injuries and deaths are for the tornado’s whole path, which may extend beyond the county. Deaths recorded within Dawes County: 0.
  2. Weak tornadoes were under-recorded before Doppler radar coverage became national in the early 1990s, so earlier decades read low. Ratings use the Fujita scale before February 2007 and the Enhanced Fujita scale after.

Storm Prediction Center severe weather database, 1950 to 2025.

Hurricanes and tropical storms

No tropical storm or hurricane has tracked within 100 miles since records began in 1851.

Wildfire and smoke

100,089 acres burned in 10 large fires since 1984, equal to 11% of the land.

Largest

August 29, 2012

West Ash Fire, 55,218 acres

55,228 acres inside Dawes County.

Most recent

September 13, 2021

Post Ca Fire

5,557 acres in total.

Acres burned since 1984, cumulative 1985: 2,2991989: 1,7882000: 1,4062006: 27,9232012: 59,3362015: 1,8052021: 5,530 100,089 acres 198519901995200020052010201520202025
Running total of acres burned inside the county (line) and each year’s acres (bars).

Every large fire

Large wildfires since 1984
Post Ca20215,5305,557
Lone Tree20151,8051,804
Unnamed20121,5125,303
West Ash201255,22855,218
Douthit20122,59529,027
Dawes County Complex200627,92327,916
Sawlog20001,4061,408
Belmont19891,0621,062
Ft.Robinson198972546,863
Mcintosh19852,2992,299
  1. Large fires mapped by the Monitoring Trends in Burn Severity program since 1984: 1,000 acres or more in the West, 500 or more in the East. Prescribed burns are excluded. Acres here are the part of each perimeter inside this place.

Monitoring Trends in Burn Severity (USGS and U.S. Forest Service), 1984 to 2026.

Smoke overhead

Smokiest year

2021: 66 days

Heavy smoke on 33 days in 2021, the most of any year.

Last 10 years

26.6 days a year

Medium or heavy smoke, 2016 to 2025.

2025

24 days

Medium or heavy smoke. 31 so far in 2026.

Days with medium or heavy smoke overhead, by year 2011: 4 2012: 35 2013: 12 2014: 2 2015: 8 2016: 5 2017: 22 2018: 28 2019: 3 2020: 34 2021: 66 66 2022: 15 2023: 30 2024: 39 2025: 24 201120122013201420152016201720182019202020212022202320242025
Days each year on which a satellite-traced plume of medium or heavy smoke covered the county’s population centre, 2011 to 2025.
  1. A smoke day is a date on which a smoke plume traced by NOAA Hazard Mapping System analysts from satellite imagery covered this place's point (the county's population centre or the city centre). Counts here are of medium or heavy smoke. Since 2018 analysts have often drawn light smoke as one area over most of the continent, so light-smoke counts are not comparable from year to year. The plumes show smoke anywhere in the air above, not air quality at the ground, and smoke hidden by cloud is missed.

NOAA Hazard Mapping System smoke analysis, 2011 to 2026, retrieved October 30, 2026.

Floods and flood insurance

No federal flood insurance claims are recorded for this county.

Flood events since 1996

  • Heavy Rain7
  • Flash Flood5
  • Flood3

OpenFEMA NFIP Redacted Claims v3, refreshed August 4, 2026. NOAA Storm Events through 2026.

River crests

Most severe crest

May 10, 1991

White River (WY) at Crawford, 16.32 ft

9.82 feet above the 6.5 ft flood stage; major flooding by today’s categories.

Most recent moderate or major crest

May 10, 1991

White River (WY) at Crawford, 16.32 ft

Major flooding.

Highest river crests above flood stage
May 10, 1991White River (WY) at Crawford16.32+9.82Major
Mar 12, 2019White River (WY) at Crawford7.82+1.32Minor
Jul 10, 1958White River (WY) at Crawford7.70+1.20Minor
Jun 9, 1968White River (WY) at Crawford7.39+0.89Minor
Jun 19, 1975White River (WY) at Crawford6.66+0.16Minor
Jul 16, 1993White River (WY) at Crawford6.28−0.22Action
Aug 24, 1960White River (WY) at Crawford6.25−0.25Action
Mar 6, 2014White River (WY) at Crawford6.08−0.42Action
Aug 16, 2016White River (WY) at Crawford5.84−0.66Action
Apr 8, 2017White River (WY) at Crawford5.84−0.66Action
May 19, 2018White River (WY) at Crawford5.66−0.84Action
Sep 18, 1988White River (WY) at Crawford5.61−0.89Action
Sep 18, 1986White River (WY) at Crawford5.61−0.89Action
Jul 24, 1979White River (WY) at Crawford5.27−1.23Action
Jun 20, 1967White River (WY) at Crawford5.05−1.45Action
Mar 27, 1971White River (WY) at Crawford5.02−1.48Action
Aug 7, 1970White River (WY) at Crawford5.00−1.50Action
Mar 18, 1969White River (WY) at Crawford5.00−1.50Action
Jun 18, 1965White River (WY) at Crawford4.60−1.90Below flood stage
Jun 22, 2013White River (WY) at Crawford3.53−2.97Below flood stage
Jun 6, 2015White River (WY) at Crawford3.29−3.21Below flood stage
Mar 5, 2012White River (WY) at Crawford3.04−3.46Below flood stage

River gauges

River gauges and their highest listed crests
Niobrara River at Box Butte Reservoir4,024.0——0
White River (WY) at Crawford6.516.32 ftMay 10, 19911
  1. Crests are the highest and the recent crests the National Weather Service lists for each river gauge in the county that has a flood stage, not every flood. Flood categories use each gauge's current flood stages; crests from before levees, dams or channel changes may not be comparable. Crests measured on an old datum are left out of the rankings.

NOAA National Water Prediction Service gauge records, retrieved October 30, 2026.

Drought

In severe drought or worse for 179 of 1,581 months since 1895 (11%); the longest spell lasted 28 months.

179

Months in severe drought or worse since 1895

80

Months in extreme drought

11%

Share of all months, severe or worse

Lowest reading

July 2026

−8.22, extreme drought

Longest severe spell

28 months

August 2020 to November 2022.

Latest month

September 2026

−6.80, extreme drought

Months in severe drought or worse, by year 1895: 0 1896: 0 1897: 0 1898: 0 1899: 0 1900: 0 1901: 0 1902: 0 1903: 0 1904: 0 1905: 0 1906: 0 1907: 0 1908: 0 1909: 0 1910: 0 1911: 2 1912: 0 1913: 0 1914: 0 1915: 0 1916: 0 1917: 0 1918: 0 1919: 0 1920: 0 1921: 0 1922: 0 1923: 0 1924: 0 1925: 0 1926: 0 1927: 0 1928: 0 1929: 0 1930: 0 1931: 0 1932: 0 1933: 0 1934: 8 1935: 2 1936: 5 1937: 5 1938: 0 1939: 2 1940: 7 1941: 2 1942: 0 1943: 0 1944: 0 1945: 0 1946: 0 1947: 0 1948: 0 1949: 0 1950: 0 1951: 0 1952: 1 1953: 0 1954: 0 1955: 0 1956: 6 1957: 1 1958: 0 1959: 0 1960: 2 1961: 1 1962: 0 1963: 0 1964: 4 1965: 1 1966: 0 1967: 0 1968: 0 1969: 0 1970: 0 1971: 0 1972: 0 1973: 0 1974: 0 1975: 0 1976: 0 1977: 0 1978: 0 1979: 0 1980: 0 1981: 9 1982: 4 1983: 0 1984: 0 1985: 4 1986: 0 1987: 0 1988: 0 1989: 7 1990: 2 1991: 0 1992: 0 1993: 0 1994: 1 1995: 0 1996: 0 1997: 0 1998: 0 1999: 0 2000: 0 2001: 0 2002: 6 2003: 0 2004: 4 2005: 0 2006: 7 2007: 12 12 2008: 7 2009: 0 2010: 0 2011: 0 2012: 8 2013: 8 2014: 0 2015: 0 2016: 0 2017: 0 2018: 0 2019: 0 2020: 5 2021: 12 2022: 11 2023: 0 2024: 3 2025: 11 18951905191519251935194519551965197519851995200520152025
Months each year with a Palmer index of −3 or lower, 1895 to 2025. Twelve means the whole year.
  1. The Palmer Drought Severity Index is computed by NOAA each month from the county's average temperature and precipitation, relative to the county's own climate. Zero is normal; -3 or lower is severe drought and -4 or lower extreme drought. It describes the long-term balance of moisture, not water supply or crop losses.

NOAA NCEI nClimDiv county Palmer Drought Severity Index, 1895 to September 2026, issued October 6, 2026.

Earthquakes

4 earthquakes of magnitude 4 or more within 50 miles since 1900; the largest was magnitude 4.3 in 1978.

4

Magnitude 2.5+ inside the county since 1973

18

Magnitude 3+ within 50 miles since 1973

4

Magnitude 4+ within 50 miles since 1900

0

Magnitude 5+ within 50 miles since 1900

Largest within 50 miles

May 7, 1978

Magnitude 4.3

36 km NNW of Hyannis, Nebraska; 44.2 miles away, 9.3 miles deep.

Most recent, magnitude 3 or more

March 8, 2025

Magnitude 3.6

7 km W of Fairburn, South Dakota; 47.8 miles away.

Earthquakes of magnitude 3 or more within 50 miles, by year 1973: 0 1974: 0 1975: 0 1976: 0 1977: 0 1978: 1 1979: 0 1980: 0 1981: 1 1982: 0 1983: 1 1984: 0 1985: 0 1986: 0 1987: 1 1988: 0 1989: 1 1990: 2 2 1991: 0 1992: 1 1993: 0 1994: 0 1995: 0 1996: 2 1997: 0 1998: 1 1999: 0 2000: 0 2001: 0 2002: 0 2003: 0 2004: 0 2005: 0 2006: 0 2007: 0 2008: 1 2009: 0 2010: 0 2011: 2 2012: 2 2013: 0 2014: 0 2015: 0 2016: 0 2017: 0 2018: 0 2019: 0 2020: 0 2021: 1 2022: 0 2023: 0 2024: 0 2025: 1 19731978198319881993199820032008201320182023
Per year, 1973 to 2025.

Every earthquake of magnitude 4 or more within 50 miles

Earthquakes of magnitude 4 or more within 50 miles
Nov 13, 20114.05.43.1South Dakota
Jan 27, 19904.026.13.18 km N of Manderson-White Horse Creek, South Dakota
May 7, 19784.344.29.336 km NNW of Hyannis, Nebraska
Jul 30, 19344.3Inside—14 km S of Chadron, Nebraska
  1. Earthquakes of magnitude 2.5 or more in the USGS Comprehensive Catalog since 1900. Within 50 miles means the epicentre lies within 50 miles of the county boundary (or inside the county).
  2. Small earthquakes were under-recorded before the modern seismic networks of the 1970s and are still missed in remote areas, so early decades read low. Magnitudes are as the catalogue reports them and mix scales (moment, local and body-wave).

USGS ANSS Comprehensive Earthquake Catalog, 1900 to present, retrieved October 30, 2026.

Severe weather and other events

774 events in the National Weather Service record, 583 of them since 1996.

249

Hail reports, 1 inch or larger

21

Hail, 2 inches or larger

198

Damaging gusts, 58 mph+

116

Winter weather events since 1996

2

Heat events since 1996

21

Cold events since 1996

Largest hail

May 10, 1991

5.00 inches

Strongest measured or estimated gust

June 28, 2016

104 mph

More event types since 1996

Other Storm Events types since 1996
Lightning200Aug 14, 1996

Costliest events since 1996

  1. Aug 2, 1996Lightning$400,000
    National Weather Service narrative

    Lightning started 2 fires north of Crwaford. One fire burned 125 acres and the other burned 20 acres as well as 112 hay bales. Both fires were grass fires.

  2. Jul 22, 2010Thunderstorm Wind$300,000
    National Weather Service narrative

    Hail damage to many cars, shattered windows at Walmart parking lot. Many business signs were blown out or had holes in them from the hail. Many street signs and several power lines were down. Three trailer homes sustained major damage. One was flipped on its roof and the other two were blown to pieces into a nearby field. Orange construction barriers tossed 0.75 miles from the highway.

  3. Jul 22, 2010Hail$200,000
    National Weather Service narrative

    Many business signs with holes in them. Windows shattered in the Walmart parking lot. Hail damage to many cars.

  4. Jul 4, 2001Thunderstorm Wind$100,000
    National Weather Service narrative

    Estimated 70 mph thunderstorm winds uprooted some trees and knockedout power in Crawford.

  5. Aug 14, 1996Lightning$50,000
    National Weather Service narrative

    Lightning struck a computer which controls the water flow in the city of Chadron. Valves controlling water flow had to be manuallyopened and closed. Residents in Chadron had to curtail water use.

  6. Jul 4, 2001Hail$50,000
  7. Jul 10, 2009Hail$50,000
    National Weather Service narrative

    Hail sizes ranged from around 1 to 2 inches in diameter near Whitney to over 2 inches in diameter north of Chadron. The large hail broke several auto and home windows. Wind gust to 66 mph was also recorded by ASOS at the Chadron airport.

  8. Apr 19, 2006High Wind, Dawes$40,000
  9. Apr 19, 2000Winter Storm, Dawes$25,000
    National Weather Service narrative

    Heavy snow and gusty winds caused spotty power outages and road closures in parts of the northern Nebraska panhandle. 6 inches of snowwas reported in Harrison and Chadron, NE.

  10. Jul 8, 2004Hail$20,000
    National Weather Service narrative

    2 inch diameter hail and tree limbs down at Chadron State Park.

  1. Storm Events records before 1996 cover only tornadoes, thunderstorm wind and hail. Damage figures are as reported by the National Weather Service at the time, not adjusted for inflation.

NOAA NCEI Storm Events Database, 1950 to 2026, issued October 26, 2026.

Weather records

From Chadron 3SW, 1.7 miles from the county’s population centre, with records from 1894.

All-time high
114°F2 times, most recently Aug 27, 1894
All-time low
−44°FFeb 7, 1895
Warmest night
82°FJul 23, 1940
Coldest day
−16°FFeb 3, 1989
Wettest day
4.40 inSep 18, 1986
Snowiest day
26.7 inJan 3, 1949
Hottest year
1937mean 53.0°F
Coldest year
1951mean 44.4°F
Wettest year
191531.86 in
Driest year
20128.66 in
Snowiest season
88.3 in2019-20
Average monthly high and low temperature and precipitation, last 30 years, Chadron 3SW 32°F 38° 13° 0.5 Jan 40° 14° 0.6 Feb 52° 23° 1.3 Mar 59° 31° 2.0 Apr 69° 42° 3.2 May 82° 52° 2.6 Jun 90° 60° 1.9 Jul 89° 57° 1.8 Aug 80° 46° 1.7 Sep 64° 33° 1.4 Oct 51° 22° 0.7 Nov 40° 13° 0.7 Dec Precipitation, inches
Average daily high and low by month, and average monthly precipitation, over the last 30 years.
Days reaching 95°F per year 1976: 24 1977: 19 1978: 28 1979: 17 1980: 31 1981: 22 1984: 17 1985: 24 1994: 17 1995: 24 1996: 6 1997: 6 1998: 19 1999: 21 2000: 20 2001: 19 2002: 32 2003: 21 2006: 32 2007: 44 2009: 7 2010: 16 2011: 24 2012: 52 52 2013: 17 2014: 9 2015: 13 2016: 22 2017: 22 2018: 16 2019: 7 2020: 30 2021: 44 2022: 41 2023: 15 2024: 40 2025: 33 1976199620092019
Days reaching 95°F each complete year, last 50 years. Thirty-year average: 23.3.
Snowfall by winter 1976: 29.5 in 1977: 40.6 in 1978: 51.1 in 1979: 56.5 in 1980: 20.4 in 1981: 41.6 in 1982: 23.2 in 1983: 47.0 in 1984: 18.4 in 1985: 55.9 in 1989: 36.4 in 1994: 29.9 in 1995: 36.3 in 1996: 39.1 in 1997: 42.0 in 1998: 34.1 in 1999: 63.0 in 2000: 40.5 in 2001: 50.6 in 2002: 33.1 in 2003: 47.5 in 2006: 25.4 in 2009: 64.3 in 2010: 55.7 in 2011: 18.2 in 2012: 59.2 in 2013: 51.1 in 2014: 62.1 in 2015: 47.0 in 2016: 48.7 in 2017: 54.7 in 2018: 76.0 in 2019: 88.3 in 88.3 2020: 57.4 in 2021: 38.0 in 2022: 86.6 in 2023: 31.3 in 2024: 28.2 in 2025: 18.4 in 1976198920032017
Total snowfall each winter (July to June), last 50 winters.

Median first snow

October 24

Earliest: August 27, 2017

Median last snow

April 18

Latest: May 28, 1947

0 of 92 winters had no measurable snow.

Station Chadron 3SW (USC00251575), 3,351 ft elevation, 1.7 miles from the population centre. Daily records from 1894 to October 26, 2026; 92.7% of days in the last 30 years are complete. Records at a single station can differ from a city’s official threaded record, which may combine several stations.

NOAA NCEI Global Historical Climatology Network Daily.

Federal disaster declarations

12 since 1953. The most recent: South Fork Fire, June 10, 2026.

Federal disaster declarations
Jun 10, 2026FireSouth Fork FireFire managementFM-5637-NE
May 24, 2024Severe StormSevere Winter Storm and Straight-Line WindsMajor disasterDR-4786-NE
Apr 4, 2020BiologicalCovid-19 PandemicMajor disasterDR-4521-NE
Mar 13, 2020BiologicalCovid-19EmergencyEM-3483-NE
Mar 21, 2019FloodSevere Winter Storm, Straight-Line Winds, and FloodingMajor disasterDR-4420-NE
Jun 25, 2015Severe StormSevere Storms, Tornadoes, Straight-Line Winds, and FloodingMajor disasterDR-4225-NE
Nov 26, 2013Severe StormSevere Storms, Winter Storms, Tornadoes and FloodingMajor disasterDR-4156-NE
Aug 30, 2012FireRegion 23 Fire ComplexFire managementFM-5009-NE
Jul 15, 2010Severe StormSevere Storms and FloodingMajor disasterDR-1924-NE
Jul 28, 2006FireDawes County Fire ComplexFire managementFM-2660-NE
Sep 13, 2005HurricaneHurricane Katrina EvacueesEmergencyEM-3245-NE
May 28, 1991FloodSevere Storms & FloodingMajor disasterDR-908-NE

This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).

OpenFEMA Disaster Declarations Summaries, retrieved October 30, 2026. Statewide declarations are not listed.

How this compares

Where Dawes County stands among 93 counties in Nebraska and 3,143 in the United States.

Ranks
Tornadoes since 19503933 / 93672 / 3,143
Tornadoes rated F3/EF3 or stronger0——
Tropical cyclones within 50 mi0——
Hurricane-strength passes within 50 mi0——
Wildfire acres since 1984100,0895 / 93321 / 3,143
Flood insurance claims0——
Flood insurance paid$0——
Disaster declarations1272 / 932,631 / 3,143
Flood events since 19961571 / 932,715 / 3,143
Hail and wind events since 199641031 / 93700 / 3,143
Winter storm events since 199611615 / 93760 / 3,143
Reported damage since 1996$1.3 million89 / 932,894 / 3,143
River crests at major flood stage133 / 931,446 / 3,143
High tide flooding days a year, last 10 years0.0——
Months in severe drought since 189517920 / 93453 / 3,143
Medium or heavy smoke days a year, last 10 years26.631 / 93462 / 3,143
Earthquakes M4+ within 50 mi since 190043 / 93793 / 3,143
Earthquakes M2.5+ in the county since 197344 / 93505 / 3,143

Neighbouring counties

Neighbouring counties
Box Butte County4306,2282
Fall River County SD330122,1501
Oglala Lakota County SD20225,6040
Sheridan County66053,7021
Sioux County290151,2890

Sources and vintage

Every number on this page comes from these public records.

  • Tornadoes NOAA Storm Prediction Center severe weather database, through 2025.
  • Tropical cyclones NOAA National Hurricane Center HURDAT2 (Atlantic; Northeast and Central Pacific), through 2025.
  • Wildfire USGS/USFS Monitoring Trends in Burn Severity, through 2026.
  • Storm events NOAA NCEI Storm Events Database, through 2026.
  • Flood insurance OpenFEMA NFIP Redacted Claims v3, refreshed August 4, 2026.
  • Declarations OpenFEMA Disaster Declarations Summaries v2, retrieved October 30, 2026.
  • Weather records NOAA NCEI Global Historical Climatology Network Daily, station USC00251575.
  • River crests NOAA National Weather Service, National Water Prediction Service river gauges, retrieved October 30, 2026.
  • Drought NOAA NCEI nClimDiv county Palmer Drought Severity Index, through September 2026.
  • Smoke NOAA NESDIS Hazard Mapping System smoke analysis, retrieved October 30, 2026.
  • Earthquakes USGS ANSS Comprehensive Earthquake Catalog (ComCat), retrieved October 30, 2026.

Joins, thresholds and known limits are set out in the methodology. Found an error? Report it. Page built October 30, 2026.