Pend Oreille County

Population 14,457 (2025) 1,400 sq mi

Large wildfires have burned 39,441 acres of Pend Oreille County since 1984, 19th most of 39 counties in Washington; the largest was the Tower Fire in 2015.

Hazard fingerprint for Pend Oreille County Tornado: 1th percentile. Tropical: 0th percentile. Wildfire: 61th percentile. Flood: 18th percentile. Hail & wind: 8th percentile. Heat: 4th percentile. Cold: 22th percentile. Winter: 98th 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 19501
  • Wildfire burn scars since 19848
  • Major flood years since 19781

At a glance

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

Acres burned since 1984

39,441

19th of 39 in Washington

8 large fires; the largest was Tower, 2015

Details

Flood insurance claims

99

21st of 39 in Washington

$1.6 million paid since 1997

Details

Tornadoes since 1950

1

24th of 39 in Washington

Fewer than the typical Washington county, which has had 3

Details

Strongest tornado

F2

July 17, 1978, 0.1 mile path

Federal disaster declarations

21

Most recent: Severe Storms, Straight-Line Winds, Flooding, Landslides, and Mudslides, 2026

Details

Record high

106°F

June 30, 2021

Details

Record low

−37°F

December 30, 1968

Details

Snowiest season

181.5in

Winter of 1915-16

Tornadoes

About one every 76 years since 1950, none rated F3/EF3 or stronger.

Strongest

July 17, 1978

F2, 0.1 mile path

10 yards wide.

Most recent

Monday, July 17, 1978

F2, 0.1 mile path

48 years ago.

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

Every recorded tornado

Tornadoes in Pend Oreille County since 1950
Jul 17, 1978F20.11000
  1. Injuries and deaths are for the tornado’s whole path, which may extend beyond the county. Deaths recorded within Pend Oreille 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

39,441 acres burned in 8 large fires since 1984, equal to 4.4% of the land.

Largest

August 12, 2015

Tower Fire, 24,761 acres

24,779 acres inside Pend Oreille County.

Most recent

August 18, 2023

Oregon Fire

10,949 acres in total.

Acres burned since 1984, cumulative 2015: 24,7802017: 8,3632022: 6,0342023: 265 39,441 acres 198519901995200020052010201520202025
Running total of acres burned inside the county (line) and each year’s acres (bars).

Every large fire

Large wildfires since 1984
Oregon202326410,949
Boulder Mountain20221,2422,342
Slate Creek20221,2601,259
Thor20222,1012,097
Diamond Watch20221,4291,432
Noisy Creek20175,4525,446
North Fork Hughes20172,9104,624
Tower201524,77924,761
  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: 48 days

Heavy smoke on 28 days in 2021, the most of any year.

Last 10 years

26.8 days a year

Medium or heavy smoke, 2016 to 2025.

2025

22 days

Medium or heavy smoke. 45 so far in 2026.

Days with medium or heavy smoke overhead, by year 2011: 3 2012: 13 2013: 11 2014: 13 2015: 28 2016: 0 2017: 28 2018: 35 2019: 12 2020: 20 2021: 48 48 2022: 23 2023: 41 2024: 39 2025: 22 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

99 federal flood insurance claims since 1997, with $1.6 million paid.

Federal flood insurance claims by year 1997: 70 70 2011: 16 2018: 8 1997
Claims per year since 1997. Years with fewer than five claims are not shown.

Most claims in one year

1997: 70 claims

$979,000 paid.

2nd most

2011: 16 claims

$313,000 paid.

3rd most

2018: 8 claims

$275,000 paid.

Claims by ZIP code

Flood insurance claims by ZIP code
9915654$910,000
9911929$557,000
9918013$60,000

Flood events since 1996

  • Flood12
  • Heavy Rain8
  • Flash Flood5

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

Drought

In severe drought or worse for 148 of 1,581 months since 1895 (9%); the longest spell lasted 33 months.

148

Months in severe drought or worse since 1895

45

Months in extreme drought

9%

Share of all months, severe or worse

Lowest reading

January 1930

−6.25, extreme drought

Longest severe spell

33 months

December 1928 to August 1931.

Latest month

September 2026

−3.18, severe 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: 1 1912: 0 1913: 0 1914: 0 1915: 0 1916: 0 1917: 2 1918: 5 1919: 1 1920: 3 1921: 0 1922: 7 1923: 3 1924: 7 1925: 6 1926: 7 1927: 0 1928: 1 1929: 12 12 1930: 12 1931: 8 1932: 0 1933: 0 1934: 2 1935: 1 1936: 5 1937: 1 1938: 3 1939: 7 1940: 2 1941: 0 1942: 0 1943: 0 1944: 2 1945: 0 1946: 0 1947: 0 1948: 0 1949: 0 1950: 0 1951: 0 1952: 2 1953: 0 1954: 0 1955: 0 1956: 0 1957: 0 1958: 0 1959: 0 1960: 0 1961: 0 1962: 0 1963: 0 1964: 0 1965: 0 1966: 0 1967: 0 1968: 0 1969: 0 1970: 0 1971: 0 1972: 0 1973: 1 1974: 0 1975: 0 1976: 1 1977: 7 1978: 0 1979: 1 1980: 0 1981: 0 1982: 0 1983: 0 1984: 0 1985: 0 1986: 0 1987: 0 1988: 1 1989: 0 1990: 0 1991: 0 1992: 1 1993: 2 1994: 0 1995: 0 1996: 0 1997: 0 1998: 0 1999: 0 2000: 0 2001: 3 2002: 0 2003: 0 2004: 1 2005: 0 2006: 0 2007: 0 2008: 0 2009: 0 2010: 0 2011: 0 2012: 0 2013: 0 2014: 0 2015: 5 2016: 0 2017: 0 2018: 0 2019: 4 2020: 0 2021: 7 2022: 1 2023: 0 2024: 0 2025: 5 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 and landslides

2 earthquakes of magnitude 4 or more within 50 miles since 1900; the largest was magnitude 4.0 in 2001.

2

Magnitude 2.5+ inside the county since 1973

28

Magnitude 3+ within 50 miles since 1973

2

Magnitude 4+ within 50 miles since 1900

0

Magnitude 5+ within 50 miles since 1900

Largest within 50 miles

November 11, 2001

Magnitude 4.0

3 km NE of Spokane, Washington; 24.9 miles away, 2.4 miles deep.

Most recent, magnitude 3 or more

September 17, 2026

Magnitude 3.6

38 km ENE of Nelson, Canada; 44.2 miles away.

Earthquakes of magnitude 3 or more within 50 miles, by year 1973: 0 1974: 0 1975: 1 1976: 0 1977: 0 1978: 0 1979: 0 1980: 0 1981: 0 1982: 0 1983: 1 1984: 1 1985: 1 1986: 0 1987: 0 1988: 1 1989: 0 1990: 1 1991: 2 1992: 0 1993: 0 1994: 0 1995: 0 1996: 0 1997: 0 1998: 2 1999: 0 2000: 1 2001: 7 7 2002: 0 2003: 1 2004: 0 2005: 0 2006: 0 2007: 0 2008: 0 2009: 0 2010: 0 2011: 0 2012: 0 2013: 0 2014: 0 2015: 5 2016: 0 2017: 1 2018: 0 2019: 0 2020: 1 2021: 0 2022: 0 2023: 0 2024: 0 2025: 0 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 11, 20014.024.92.43 km NE of Spokane, Washington
Aug 6, 19854.029.13.132 km NNW of Creston, Canada
  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.

Mapped landslides

53

Landslides mapped, probable or better

1

With a recorded date

2

Source inventories

Mapped by WA WGS (52), NASA (1).

  1. Landslides mapped in the USGS compilation of landslide inventories across the United States (version 3.0, 2025), rated probable or better. The compilation joins inventories made by federal and state agencies for different purposes and areas, so the number mapped in a county reflects how closely it has been surveyed as much as how often its slopes fail. An area with few records may simply not have been mapped. Deaths are as recorded in the inventories; a slide listed in two inventories is counted once.

USGS Landslide Inventories across the United States, version 3.0, retrieved October 27, 2026.

Severe weather and other events

651 events in the National Weather Service record, 650 of them since 1996.

18

Hail reports, 1 inch or larger

2

Hail, 2 inches or larger

21

Damaging gusts, 58 mph+

482

Winter weather events since 1996

1

Heat events since 1996

4

Cold events since 1996

Largest hail

June 17, 1997

3.00 inches

Strongest measured or estimated gust

August 6, 1997

77 mph

More event types since 1996

Other Storm Events types since 1996
Dust storms and dust devils100Sep 25, 2001
Dense fog and smoke300Sep 12, 2020
Debris flows800Jan 18, 2018

Costliest events since 1996

  1. Aug 29, 2025Wildfire, Northeast Mountains$33.0 million
    National Weather Service narrative

    Crown Creek Wildfire started on August 29 by lightning. It was located 1 mile Southeast of Marble, Washington. One home was reported lost. It burned 14192 acres of timber.

  2. Sep 1, 2025Wildfire, Northeast Mountains$33.0 million
    National Weather Service narrative

    Crown Creek Wildfire started on August 29 by lightning. It was located 1 mile Southeast of Marble, Washington. One home was reported lost. It burned 14192 acres of timber. It was contained on September 14. Cost is estimated.

  3. Sep 1, 2025Wildfire, Northeast Mountains$24.0 million
    National Weather Service narrative

    Tacoma Creek Fire started on September 1 by lightning. It was located 15 miles Northwest of Cusick. It was contained September 26. It burned 3961 acres of timber, brush, and grass. Cost is estimated.

  4. Aug 1, 2025Wildfire, Northeast Mountains$11.0 million
    National Weather Service narrative

    Hope Fire started by a suspected human cause on July 8. It was located 15 miles north of Kettle Falls Washington. It burned around 8177 acres of timber, two homes, and a 150 acre ranch. Cost is estimated.

  5. Jul 19, 2025Wildfire, Northeast Mountains$11.0 million
    National Weather Service narrative

    Lake Spokane Fire started on July 19 by suspected human cause. It was located 12 miles northwest of Spokane. It burned 2506 acres of timber. It also destroyed 1 outbuilding. It was contained on July 31. Cost is estimated.

  6. Jul 8, 2025Wildfire, Northeast Mountains$11.0 million
    National Weather Service narrative

    Hope Fire started by a suspected human cause on July 8. It was located 15 miles north of Kettle Falls Washington. It burned around 8177 acres of timber, two homes, and a 150 acre ranch. Cost is estimated.

  7. May 11, 2018Flood$8.0 million
    National Weather Service narrative

    The USGS River Flow Gage at Abeni Falls Dam which controls the flow of the Pend Oreille River surpassed the Flood Flow of 95,000 Cubic Feet per Second (CFS) at 2:30 PM PST on May 11th. The flow increased and passed through the Moderate Flood Flow of 115,000 CFS at 12:15 PM on May 18th. The flow continued to increase and peaked at the Moderate Flood reading of 121,000 CFS at at 5:00 AM on May 27th. The flow continued to fluctuate between 118,000 CFS and 121,000 CFS through the end of May. The flow receded to below the Flood Flow on June 6th.

  8. Jul 25, 2026Wildfire, Northeast Mountains$7.0 million
    National Weather Service narrative

    Bradeen Hill Wildfire started around 1252 PST on July 25. It was started by unknown human cause. It is located 2 miles east of Gifford. It burned 4400 acres of timber and grassland. Three homes were destroyed. It continued through the end of July. Cost is estimated.

  9. Aug 20, 2024Wildfire, Northeast Mountains$3.7 million
    National Weather Service narrative

    Upper Ruby Wildfire was started on August 20 by unconfirmed lightning. It is located 16 miles Northwest of Cusick. It was contained September 3. It burned 280 acres of timber. Cost is estimated.

  10. Sep 1, 2024Wildfire, Northeast Mountains$3.7 million
    National Weather Service narrative

    Upper Ruby Wildfire was started on August 20 by unconfirmed lightning. It is located 16 miles Northwest of Cusick. It was contained September 3. It burned 280 acres of timber. Cost is estimated.

  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 Sandpoint Experiment Station, 30.4 miles from the county’s population centre, with records from 1910.

All-time high
106°FJun 30, 2021
All-time low
−37°FDec 30, 1968
Warmest night
72°FJun 29, 2015
Coldest day
−5°F3 times, most recently Jan 13, 2024
Wettest day
3.00 inNov 10, 2020
Snowiest day
19.0 inDec 9, 1922
Hottest year
1998mean 48.4°F
Coldest year
1916mean 41.7°F
Wettest year
201247.25 in
Driest year
20226.95 in
Snowiest season
181.5 in1915-16
Average monthly high and low temperature and precipitation, last 30 years, Sandpoint Experiment Station 32°F 34° 23° 3.5 Jan 38° 23° 2.6 Feb 47° 28° 2.8 Mar 56° 34° 1.9 Apr 66° 42° 2.2 May 73° 48° 1.9 Jun 84° 52° 0.6 Jul 83° 50° 0.8 Aug 72° 43° 1.3 Sep 57° 34° 2.3 Oct 43° 29° 4.1 Nov 34° 23° 4.2 Dec Precipitation, inches
Average daily high and low by month, and average monthly precipitation, over the last 30 years.
Nights at or below freezing per year 1974: 156 1975: 152 1976: 172 1977: 163 1978: 167 1980: 153 1981: 157 1984: 152 1985: 180 180 1986: 156 1987: 155 1988: 148 1989: 156 1990: 150 1991: 147 1992: 156 1993: 153 1994: 157 1995: 134 1996: 157 1997: 149 1998: 127 1999: 167 2000: 172 2001: 158 2002: 164 2003: 149 2006: 145 2007: 138 2012: 146 2013: 175 2014: 139 2018: 152 2019: 158 2021: 148 2022: 155 2023: 145 1974198719972013
Nights at or below freezing each complete year, last 50 years. Thirty-year average: 151.8.
Snowfall by winter 1974: 110.0 in 1975: 69.8 in 1976: 31.5 in 1977: 81.0 in 1978: 62.5 in 1979: 63.0 in 1980: 34.6 in 1981: 72.0 in 1982: 58.3 in 1983: 35.8 in 1984: 65.8 in 1985: 50.6 in 1987: 23.4 in 1989: 79.6 in 1990: 55.9 in 1991: 27.6 in 1992: 80.7 in 1993: 32.3 in 1994: 44.2 in 1995: 25.7 in 1996: 149.8 in 149.8 1997: 33.3 in 1998: 51.7 in 1999: 73.3 in 2000: 51.6 in 2001: 76.9 in 2002: 41.3 in 2003: 76.1 in 2004: 17.6 in 2005: 29.7 in 2006: 45.1 in 2007: 122.8 in 2011: 70.3 in 2012: 48.8 in 2013: 44.7 in 2018: 62.0 in 2021: 34.3 in 2022: 22.5 in 2023: 28.4 in 1974198419962006
Total snowfall each winter (July to June), last 50 winters.

Median first snow

November 15

Earliest: October 15, 1930

Median last snow

March 23

Latest: May 1, 1923

0 of 102 winters had no measurable snow.

Station Sandpoint Experiment Station (USC00108137), 2,126 ft elevation, 30.4 miles from the population centre. Daily records from 1910 to October 16, 2026; 85.5% 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

21 since 1953. The most recent: Severe Storms, Straight-Line Winds, Flooding, Landslides, and Mudslides, April 7, 2026.

Federal disaster declarations
Apr 7, 2026FloodSevere Storms, Straight-Line Winds, Flooding, Landslides, and MudslidesMajor disasterDR-4906-WA
Apr 8, 2021Severe StormSevere Winter Storm, Straight-Line Winds, Flooding, Landslides, and MudslidesMajor disasterDR-4593-WA
Feb 4, 2021FireWildfires and Straight-Line WindsMajor disasterDR-4584-WA
Mar 22, 2020BiologicalCovid-19 PandemicMajor disasterDR-4481-WA
Mar 13, 2020BiologicalCovid-19EmergencyEM-3427-WA
Apr 21, 2017FloodSevere Winter Storms, Flooding, Landslides, MudslidesMajor disasterDR-4309-WA
Jan 15, 2016Severe StormSevere Storms, Straight-Line Winds, Flooding, Landslides, and MudslidesMajor disasterDR-4249-WA
Oct 20, 2015FireWildfires and MudslidesMajor disasterDR-4243-WA
Aug 21, 2015FireWildfiresEmergencyEM-3372-WA
Mar 2, 2009Severe StormSevere Winter Storm and Record and Near Record SnowMajor disasterDR-1825-WA
Feb 14, 2007Severe StormSevere Winter Storm, Landslides, and MudslidesMajor disasterDR-1682-WA
May 17, 2006Severe StormSevere Storms, Flooding, Tidal Surge, Landslides, and MudslidesMajor disasterDR-1641-WA
Sep 7, 2005Coastal StormHurricane Katrina EvacuationEmergencyEM-3227-WA
Jul 21, 1997FloodFl00ding, Snow MeltMajor disasterDR-1182-WA
Apr 2, 1997FloodHeavy Rains, Snow Melt, Flooding, Land & Mud SlidesMajor disasterDR-1172-WA
Jan 17, 1997Severe StormSevere Winter Storms, Land & Muds Slides,FloodingMajor disasterDR-1159-WA
Jan 7, 1997Severe Ice StormSevere Ice StormMajor disasterDR-1152-WA
Nov 13, 1991FireFiresMajor disasterDR-922-WA
May 21, 1980Volcanic EruptionVolcanic Eruption, Mt. St. HelensMajor disasterDR-623-WA
Mar 31, 1977DroughtDroughtEmergencyEM-3037-WA
Jan 25, 1974FloodSevere Storms, Snowmelt & FloodingMajor disasterDR-414-WA

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 Pend Oreille County stands among 39 counties in Washington and 3,143 in the United States.

Ranks
Tornadoes since 1950124 / 392,945 / 3,143
Tornadoes rated F3/EF3 or stronger0——
Tropical cyclones within 50 mi0——
Hurricane-strength passes within 50 mi0——
Wildfire acres since 198439,44119 / 39514 / 3,143
Flood insurance claims9921 / 391,294 / 3,143
Flood insurance paid$1.6 million21 / 391,273 / 3,143
Disaster declarations2125 / 391,345 / 3,143
Flood events since 19962511 / 392,296 / 3,143
Hail and wind events since 19969114 / 392,820 / 3,143
Winter storm events since 19964822 / 3957 / 3,143
Reported damage since 1996$154 million10 / 39358 / 3,143
River crests at major flood stage0——
High tide flooding days a year, last 10 years0.0——
Months in severe drought since 189514817 / 39985 / 3,143
Medium or heavy smoke days a year, last 10 years26.84 / 39443 / 3,143
Earthquakes M4+ within 50 mi since 1900237 / 391,151 / 3,143
Earthquakes M2.5+ in the county since 1973235 / 39665 / 3,143

Neighbouring counties

Neighbouring counties
Bonner County ID4029,51840
Boundary County ID0040,5853
Spokane County16054,11462
Stevens County50120,99115

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 USC00108137.
  • 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.
  • Landslides USGS Landslide Inventories across the United States, version 3.0 (2025).
  • 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.