Custer County

Population 5,590 (2025) 739 sq mi

Large wildfires have burned 27,687 acres of Custer County since 1984, 30th most of 64 counties in Colorado; the largest was the Junkins Fire in 2016.

Hazard fingerprint for Custer County Tornado: 19th percentile. Tropical: 0th percentile. Wildfire: 66th percentile. Flood: 43th percentile. Hail & wind: 31th percentile. Heat: 0th percentile. Cold: 67th percentile. Winter: 96th 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 19509
  • Wildfire burn scars since 19845

At a glance

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

Acres burned since 1984

27,687

30th of 64 in Colorado

5 large fires; the largest was Junkins, 2016

Details

Flood insurance claims

1

49th of 64 in Colorado

$769 paid since 1997

Details

Tornadoes since 1950

9

32nd of 64 in Colorado

About as many as the typical Colorado county

Details

Strongest tornado

F2

July 4, 1960, 0.1 mile path

Federal disaster declarations

14

Most recent: Wildfires, Flooding, and Mudslides, 2026

Details

Record high

96°F

July 11, 1939

Details

Record low

−46°F

February 8, 1933

Details

Snowiest season

173.4in

Winter of 1936-37

Tornadoes

About one every 8.4 years since 1950, none rated F3/EF3 or stronger.

Strongest

July 4, 1960

F2, 0.1 mile path

10 yards wide.

Most recent

Wednesday, July 30, 2025

EF0, 0.3 mile path

Within the past year.

Tornadoes by decade Doppler radar era² 1950s: 1 1 1960s: 3 3 1970s: 0 1980s: 0 1990s: 2 2 2000s: 1 1 2010s: 1 1 2020s: 1 1 1950s1960s1970s1980s1990s2000s2010s2020s
Recorded tornadoes per decade. The 2020s are incomplete.
Tornadoes by month J: 0 F: 1 M: 0 A: 0 M: 0 J: 2 J: 4 4 A: 2 S: 0 O: 0 N: 0 D: 0 JFMAMJJASOND
By month of occurrence, all years.

Every recorded tornado

Tornadoes in Custer County since 1950
Jul 30, 2025EF00.32000
Jul 22, 2019EF00.52000
Jun 29, 2007EF01.07500
Jun 4, 1997F00.15000
Aug 30, 1992F00.11000
Aug 2, 1966F00.11000
Jul 24, 1965F00.11000
Jul 4, 1960F20.11000
Feb 13, 1954F10.51700
  1. Injuries and deaths are for the tornado’s whole path, which may extend beyond the county. Deaths recorded within Custer 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

27,687 acres burned in 5 large fires since 1984, equal to 5.9% of the land.

Largest

October 17, 2016

Junkins Fire, 19,008 acres

17,828 acres inside Custer County.

Most recent

October 17, 2016

Junkins Fire

19,008 acres in total.

Acres burned since 1984, cumulative 2005: 3,3102011: 3,6492012: 2,0132016: 18,716 27,687 acres 198519901995200020052010201520202025
Running total of acres burned inside the county (line) and each year’s acres (bars).

Every large fire

Large wildfires since 1984
Junkins201617,82819,008
Hayden Pass201688717,961
Wetmore20122,0122,292
Duckett20113,6484,699
Mason20053,31011,623
  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: 32 days

Heavy smoke on 11 days in 2020, the most of any year.

Last 10 years

10.5 days a year

Medium or heavy smoke, 2016 to 2025.

2025

13 days

Medium or heavy smoke. 24 so far in 2026.

Days with medium or heavy smoke overhead, by year 2011: 11 2012: 10 2013: 5 2014: 0 2015: 2 2016: 0 2017: 8 2018: 10 2019: 0 2020: 23 2021: 32 32 2022: 7 2023: 6 2024: 6 2025: 13 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

1 federal flood insurance claims since 1997, with $769 paid.

Federal flood insurance claims by year
Claims per year since 1997. Years with fewer than five claims are not shown.

Flood events since 1996

  • Flash Flood25
  • Heavy Rain25

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.

River crests

Most severe crest

August 2, 1966

Grape Creek near Westcliffe, 8.45 ft

3.45 feet above the 5.0 ft flood stage; minor flooding by today’s categories.

Highest river crests above flood stage
Aug 2, 1966Grape Creek near Westcliffe8.45+3.45Minor
Apr 23, 1942Grape Creek near Westcliffe5.26+0.26Minor
Jul 22, 1930Grape Creek near Westcliffe4.60−0.40Action
Apr 17, 1987Grape Creek near Westcliffe4.25−0.75Action
Apr 13, 1944Grape Creek near Westcliffe4.01−0.99Action
Jun 12, 1957Grape Creek near Westcliffe3.98−1.02Below flood stage
Aug 7, 1945Grape Creek near Westcliffe3.95−1.05Below flood stage
May 1, 1984Grape Creek near Westcliffe3.86−1.14Below flood stage
May 6, 1990Grape Creek near Westcliffe3.81−1.19Below flood stage
Jun 19, 1947Grape Creek near Westcliffe3.72−1.28Below flood stage

River gauges

River gauges and their highest listed crests
Grape Creek near Westcliffe5.08.45 ftAug 2, 19660
  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 222 of 1,581 months since 1895 (14%); the longest spell lasted 34 months.

222

Months in severe drought or worse since 1895

114

Months in extreme drought

14%

Share of all months, severe or worse

Lowest reading

August 2002

−6.98, extreme drought

Longest severe spell

34 months

November 2010 to August 2013.

Latest month

September 2026

−5.39, extreme drought

Months in severe drought or worse, by year 1895: 0 1896: 0 1897: 0 1898: 0 1899: 0 1900: 0 1901: 1 1902: 0 1903: 0 1904: 0 1905: 0 1906: 1 1907: 0 1908: 0 1909: 0 1910: 0 1911: 1 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: 4 1925: 12 12 1926: 2 1927: 1 1928: 0 1929: 1 1930: 0 1931: 0 1932: 0 1933: 1 1934: 0 1935: 3 1936: 0 1937: 0 1938: 0 1939: 4 1940: 0 1941: 0 1942: 0 1943: 0 1944: 0 1945: 0 1946: 0 1947: 0 1948: 0 1949: 1 1950: 12 1951: 12 1952: 4 1953: 4 1954: 9 1955: 5 1956: 4 1957: 1 1958: 0 1959: 0 1960: 0 1961: 0 1962: 0 1963: 11 1964: 6 1965: 0 1966: 0 1967: 2 1968: 0 1969: 0 1970: 0 1971: 0 1972: 0 1973: 0 1974: 7 1975: 0 1976: 0 1977: 0 1978: 6 1979: 0 1980: 1 1981: 6 1982: 0 1983: 0 1984: 0 1985: 0 1986: 0 1987: 0 1988: 0 1989: 0 1990: 0 1991: 0 1992: 0 1993: 0 1994: 0 1995: 0 1996: 1 1997: 0 1998: 0 1999: 0 2000: 0 2001: 0 2002: 11 2003: 12 2004: 2 2005: 0 2006: 5 2007: 0 2008: 0 2009: 0 2010: 2 2011: 12 2012: 12 2013: 8 2014: 0 2015: 0 2016: 0 2017: 0 2018: 10 2019: 3 2020: 9 2021: 5 2022: 1 2023: 0 2024: 0 2025: 0 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

1 earthquake of magnitude 4 or more within 50 miles since 1900; the largest was magnitude 4.0 in 2017.

0

Magnitude 2.5+ inside the county since 1973

19

Magnitude 3+ within 50 miles since 1973

1

Magnitude 4+ within 50 miles since 1900

0

Magnitude 5+ within 50 miles since 1900

Largest within 50 miles

December 30, 2017

Magnitude 4.0

15 km N of Weston, Colorado; 45.5 miles away, 2.5 miles deep.

Most recent, magnitude 3 or more

September 1, 2019

Magnitude 3.5

16 km NNW of Weston, Colorado; 45.4 miles away.

Earthquakes of magnitude 3 or more within 50 miles, by year 1973: 0 1974: 0 1975: 0 1976: 0 1977: 0 1978: 0 1979: 0 1980: 0 1981: 0 1982: 0 1983: 0 1984: 0 1985: 1 1986: 0 1987: 0 1988: 0 1989: 0 1990: 0 1991: 0 1992: 1 1993: 0 1994: 0 1995: 1 1996: 0 1997: 0 1998: 0 1999: 0 2000: 0 2001: 0 2002: 0 2003: 3 3 2004: 0 2005: 0 2006: 3 2007: 0 2008: 3 2009: 0 2010: 0 2011: 0 2012: 0 2013: 0 2014: 0 2015: 0 2016: 0 2017: 3 2018: 1 2019: 3 2020: 0 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
Dec 30, 20174.045.52.515 km N of Weston, Colorado
  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

15

Landslides mapped, probable or better

0

With a recorded date

1

Source inventory

Mapped by CO GS (15).

  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

711 events in the National Weather Service record, 696 of them since 1996.

43

Hail reports, 1 inch or larger

1

Hail, 2 inches or larger

4

Damaging gusts, 58 mph+

380

Winter weather events since 1996

0

Heat events since 1996

17

Cold events since 1996

Largest hail

June 11, 1981

2.75 inches

Strongest measured or estimated gust

April 11, 2012

82 mph

More event types since 1996

Other Storm Events types since 1996
Lightning221Aug 31, 2011
Debris flows200Jul 28, 2026
Avalanches110Jan 10, 2008

Costliest events since 1996

  1. Mar 14, 1996Winter Storm, Westcliffe Vicinity / Wet Mountain Valley Below 8500 Ft$600,000
    National Weather Service narrative

    A strong storm system in the desert southwest moved into southern Colorado late on the night of the 13th and during the early morning of the 14th. This system, which lasted until the early morning of the 15th, brought hazardous winter driving conditions and heavy snow amounts to south central and southeastern Colorado. 3 to 8 inches of snow was generally found across the area, including 4 to 9 inches in the Colorado Springs area, with higher amounts recorded over the higher terrain. Other totals included 12 inches at La Veta Pass...16 inches in Rye...17 inches in Beulah...and 24 inches in Cuchara. 7 to 12 inches of a wet snow/freezing rain mixture fell across western Kiowa county,…

  2. Nov 12, 2011High Wind, Westcliffe Vicinity / Wet Mountain Valley Below 8500 Ft$250,000
    National Weather Service narrative

    A strong storm system centered over northern Colorado produced widespread damaging winds...in excess of 100 mph at times...over south central and southeast Colorado. There were widespread power outages and damage...especially over sections of Custer and Las Animas Counties. Custer County was under a state of emergency for a time. Numerous trees and power lines were blown down. In addition...sheds and barns were destroyed...a few cars were damaged or destroyed when large tree limbs came crashing down on them...a few homes also had tree damage...trailers were knocked over and some roofs were damaged and/or blown off. Higher reported wind gusts include 59 mph at the Pueblo Memorial…

  3. Feb 22, 1996High Wind, Northern Sangre De Cristo Mountains Above 11000 Ft$150,000
    National Weather Service narrative

    High winds occurred along the lee slopes of the Rampart Range and Wet Mountains in the morning hours. Winds gusted to over 60 knots throughout much of that area...with a peak gust of 76 knots at Monument in El Paso county. Winds at the Air Force Academy gusted to 72 knots. Damage to roofs...shingles and fences was seen in western Colorado Springs and over 2,600 homes lost power for between 2 and 6 hours. Beulah...in western Pueblo county had a peak wind gust of 64 knots. A few mobile homes in Williamsburg in Fremont county were rolled over and a few people had minor injuries. Around 1,100 customers lost power in Pueblo for an hour. Two mobile homes in transit on Interstate 25 were…

  4. Apr 30, 2002Wildfire$100,000
    National Weather Service narrative

    The Cuerno Verde fire was human caused, when a yard clean-up project was fanned by high winds. The fire burned around 600 acres of trees and meadows. Two homes were destroyed. It cost around $500,000 to fight the fire. The fire was not contained until May 1st.

  5. May 1, 2002Wildfire$100,000
    National Weather Service narrative

    The Cuerno Verde fire, which started April 30th, was contained on this date. Two residences were destroyed. It cost $500,000 to fight the fire.

  6. Apr 19, 2007High Wind, Westcliffe Vicinity / Wet Mountain Valley Below 8500 Ft$30,000
    National Weather Service narrative

    A steel barn was destroyed three miles southwest of Westcliffe. Many large limbs were broken off and fell on the ranch house. A nearby shed was also destroyed. The localized damage was likely the result of strong gradient winds and virga...creating a very high wind.

  7. Jul 27, 2003Flash Flood$20,000
    National Weather Service narrative

    Houses and other buildings were flooded as a burst of heavy rain hit the area. A health clinic in Westcliffe was flooded, with an estimated $1200 in damage. The library sustained about $1000 in damage. Water up to one foot depth was reported in roadways in Westcliffe and Silver Cliff.

  8. Jul 26, 2009Flash Flood$4,000
    National Weather Service narrative

    Six inches of water was observed flowing over roadways...with several gravel roads washed out and impassable.

  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 Westcliffe, 4.5 miles from the county’s population centre, with records from 1895.

All-time high
96°FJul 11, 1939
All-time low
−46°FFeb 8, 1933
Warmest night
68°FJul 25, 1903
Coldest day
−6°FFeb 5, 1989
Wettest day
3.81 inMay 18, 1955
Snowiest day
30.0 in2 times, most recently Nov 27, 1919
Hottest year
1934mean 47.0°F
Coldest year
1992mean 39.5°F
Wettest year
193635.48 in
Driest year
20188.58 in
Snowiest season
173.4 in1936-37
Average monthly high and low temperature and precipitation, last 30 years, Westcliffe 32°F 40° 9° 0.5 Jan 42° 13° 0.6 Feb 51° 21° 1.0 Mar 57° 26° 1.5 Apr 67° 34° 1.5 May 78° 42° 0.8 Jun 82° 46° 2.5 Jul 79° 45° 1.7 Aug 74° 39° 1.0 Sep 62° 28° 0.9 Oct 50° 18° 0.6 Nov 41° 10° 0.5 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 1976: 222 1977: 200 1978: 215 1979: 211 1980: 219 1981: 177 1982: 199 1983: 221 1984: 215 1985: 212 1986: 203 1987: 232 232 1988: 224 1989: 217 1990: 214 1991: 226 1992: 232 1993: 229 1994: 218 1996: 211 1997: 220 1998: 213 1999: 220 2000: 217 2001: 214 2002: 217 2003: 212 2004: 223 2005: 214 2006: 202 2007: 207 2008: 224 2009: 201 2010: 211 2011: 203 2013: 210 2014: 199 2015: 186 2016: 202 2017: 181 2018: 200 2019: 210 2020: 216 2021: 208 2022: 196 2023: 201 2024: 206 2025: 188 19761986199720072018
Nights at or below freezing each complete year, last 50 years. Thirty-year average: 207.3.
Snowfall by winter 1977: 43.0 in 1978: 113.5 in 1979: 130.0 in 1980: 48.0 in 1981: 75.0 in 1982: 109.5 in 1983: 139.5 in 1984: 114.0 in 1985: 87.5 in 1986: 143.0 in 143.0 1987: 85.0 in 1988: 87.0 in 1989: 138.5 in 1990: 89.0 in 1991: 126.0 in 1992: 93.7 in 1993: 127.0 in 1994: 117.0 in 1996: 99.8 in 1997: 110.7 in 1998: 85.4 in 1999: 75.4 in 2000: 71.3 in 2001: 43.7 in 2002: 79.6 in 2003: 79.4 in 2004: 102.3 in 2005: 53.1 in 2006: 129.0 in 2007: 91.6 in 2008: 71.4 in 2009: 107.5 in 2012: 71.5 in 2013: 97.0 in 2014: 62.3 in 2015: 86.7 in 2016: 81.2 in 2017: 33.5 in 2018: 81.6 in 2019: 64.4 in 2020: 107.8 in 2021: 92.3 in 2022: 43.8 in 2023: 90.4 in 2024: 87.7 in 2025: 37.7 in 19771987199820082020
Total snowfall each winter (July to June), last 50 winters.

Median first snow

October 19

Earliest: August 26, 1950

Median last snow

May 5

Latest: June 10, 1975

0 of 94 winters had no measurable snow.

Station Westcliffe (USC00058931), 7,873 ft elevation, 4.5 miles from the population centre. Daily records from 1895 to October 26, 2026; 99.0% 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

14 since 1953. The most recent: Wildfires, Flooding, and Mudslides, September 1, 2026.

Federal disaster declarations
Sep 1, 2026FireWildfires, Flooding, and MudslidesMajor disasterDR-4944-CO
Jun 29, 2026FireAspen Acres FireFire managementFM-5642-CO
Mar 28, 2020BiologicalCovid-19 PandemicMajor disasterDR-4498-CO
Mar 13, 2020BiologicalCovid-19EmergencyEM-3436-CO
Oct 17, 2016FireJunkins FireFire managementFM-5157-CO
Oct 23, 2012FireWetmore FireFire managementFM-5022-CO
Jun 16, 2011FireDuckett FireFire managementFM-2923-CO
Jan 7, 2007SnowstormSnowEmergencyEM-3270-CO
Sep 5, 2005Coastal StormHurricane Katrina EvacuationEmergencyEM-3224-CO
Jul 10, 2005FireMason FireFire managementFM-2566-CO
Apr 9, 2003SnowstormSnowEmergencyEM-3185-CO
Jun 19, 2002FireWildfiresMajor disasterDR-1421-CO
May 1, 2002FireCuerno Verde FireFire managementFM-2401-CO
May 17, 1999Severe StormCo-Flooding 4/30/99Major disasterDR-1276-CO

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 Custer County stands among 64 counties in Colorado and 3,143 in the United States.

Ranks
Tornadoes since 1950932 / 642,326 / 3,143
Tornadoes rated F3/EF3 or stronger0——
Tropical cyclones within 50 mi0——
Hurricane-strength passes within 50 mi0——
Wildfire acres since 198427,68730 / 64585 / 3,143
Flood insurance claims149 / 642,799 / 3,143
Flood insurance paid$76948 / 642,839 / 3,143
Disaster declarations148 / 642,433 / 3,143
Flood events since 19965013 / 641,410 / 3,143
Hail and wind events since 199622629 / 641,740 / 3,143
Winter storm events since 199638019 / 64109 / 3,143
Reported damage since 1996$1.3 million44 / 642,901 / 3,143
River crests at major flood stage0——
High tide flooding days a year, last 10 years0.0——
Months in severe drought since 189522214 / 64191 / 3,143
Medium or heavy smoke days a year, last 10 years10.548 / 642,485 / 3,143
Earthquakes M4+ within 50 mi since 1900141 / 641,397 / 3,143
Earthquakes M2.5+ in the county since 19730——

Neighbouring counties

Neighbouring counties
Fremont County9031,49272
Huerfano County8093,3415
Pueblo County21058,195100
Saguache County708,1082

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 USC00058931.
  • 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.