Bristol

Population 16,418 (2025)

27 tornadoes have tracked within 25 miles of Bristol since 1950, 2 of them rated EF3 or F3 or stronger; the most recent was on May 12, 2017.

Hazard fingerprint for Bristol Tornado: 88th percentile. Tropical: 20th percentile. Wildfire: 0th percentile. Flood: 98th percentile. Hail & wind: 99th percentile. Heat: 0th percentile. Cold: 3th percentile. Winter: 63th 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 within 25 miles since 195027
  • Tropical cyclone tracks within 100 miles since 1851, wider where stronger3
  • Wildfire burn scars within 25 miles since 19848

At a glance

Tornado paths within 25 miles, tropical cyclone tracks within 100 miles and wildfire perimeters within 25 miles of the city centre. Storm events, flood insurance claims and disaster declarations are for Bristol city. Earthquakes within 50 miles, volcanoes within 100 miles and smoke days are measured from the city centre; river and tide gauges, tsunami and landslide records and the drought index are for Bristol city.

Flood insurance claims

24

Bristol city

$128,000 paid since 1980

Details

Tornadoes since 1950, within 25 mi

27

2 rated F3/EF3 or stronger

Details

Tropical cyclones within 50 mi

2

None at hurricane strength since 1851

Details

Large wildfires within 25 mi

8

Largest: Unnamed, 2007

Details

Strongest tornado

EF3

April 27, 2011, 19.6 mile path

Strongest tropical cyclone

TS

Tropical storm Hugo, 1989, 25.7 miles away

Federal disaster declarations

13

Most recent: Severe Winter Storm, 2026

Details

Record high

103°F

June 30, 2012

Details

Tornadoes

About one every 2.8 years since 1950, 2 of them rated F3/EF3 or stronger.

Strongest

April 27, 2011

EF3, 19.6 mile path

1,320 yards wide; 3 killed along the whole path.

Most recent

Friday, May 12, 2017

EF0, 0.1 mile path

9 years ago.

Tornadoes by decade, within 25 miles Doppler radar era² 1950s: 2 2 1960s: 1 1 1970s: 4 4 1980s: 1 1 1990s: 3 3 2000s: 5 5 2010s: 11 11 2020s: 0 1950s1960s1970s1980s1990s2000s2010s2020s
Recorded tornadoes per decade. The 2020s are incomplete.
Tornadoes by month J: 1 F: 1 M: 0 A: 11 11 M: 5 J: 6 J: 2 A: 0 S: 0 O: 1 N: 0 D: 0 JFMAMJJASOND
By month of occurrence, all years.

Every recorded tornado

Tornadoes within 25 miles since 1950
May 12, 2017EF00.14000
Jul 27, 2014EF07.130000
Jul 27, 2014EF10.55000
Feb 29, 2012EF00.67000
May 24, 2011EF04.25000
Apr 27, 2011EF319.61,320503
Apr 27, 2011EF212.025002
Apr 27, 2011EF13.910000
Apr 27, 2011EF00.55000
Apr 9, 2011EF10.610000
Apr 9, 2011EF00.95000
Jun 16, 2009EF00.12000
Jun 16, 2009EF00.22000
May 8, 2009EF00.12000
May 8, 2009EF00.12000
May 1, 2002F10.15000
Jun 3, 1998F19.58030
Apr 13, 1996F00.510000
Apr 30, 1990F00.32000
Jun 16, 1989F11.03000
Oct 1, 1977F116.277100
Jan 25, 1975F23.23020
Apr 4, 1974F38.417741
Apr 4, 1974F018.02,50020
Jun 3, 1962F20.11000
Jun 10, 1953F10.11000
Apr 30, 1953F01.022000
  1. Injuries and deaths are for the tornado’s whole path, which may extend beyond this area.
  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

2 passed within 50 miles since 1851; none at hurricane strength.

Strongest within 50 miles

September 22, 1989

Hugo, Tropical storm

25.7 miles at closest approach, winds near 58 mph.

Most recent

October 29, 2020

Zeta, Tropical storm

38.9 miles at closest approach.

Every storm within 100 miles

Tropical cyclones within 100 miles
Zeta202038.9Tropical storm52Category 3
Hugo198925.7Tropical storm58Category 5
Unnamed194978.7Tropical storm58Category 4
Unnamed193462.3Post-tropical39Category 2
Unnamed193226.6Post-tropical40Tropical storm
Unnamed191590.7Post-tropical40Category 4
Unnamed190779.4Post-tropical40Tropical storm
Unnamed190270.1Post-tropical40Category 2
  1. Tropical storms and hurricanes (34 kt or more, still tropical) at closest approach. Post-tropical remnants with gale-force winds are listed but not counted. Direct: track within 50 miles; near: within 100 miles. Distance is measured to the county boundary for counties and to the city centre for cities, using positions interpolated hourly between HURDAT2 fixes.

National Hurricane Center HURDAT2, 1851 to 2025.

Wildfire and smoke

8 large fires burned within 25 miles since 1984.

Largest

April 10, 2007

Unnamed Fire, 2,242 acres

16.8 miles from the city centre.

Most recent

November 13, 2016

Clinch Valley Fire

939 acres in total.

Acres burned by large fires within 25 miles, cumulative 1987: 2,9691991: 6452007: 3,7422010: 9022016: 939 9,197 acres 198519901995200020052010201520202025
Running total of acres burned (line) and each year’s acres (bars).

Every large fire

Large wildfires since 1984
Clinch Valley201610.7939
Jenkins Hollow201022.1902
Unnamed200716.82,242
Unnamed20079.61,500
Unnamed199121.7645
Unnamed198722.1643
Stoney Creek198713.9919
Hampton198721.01,407
  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

2023: 45 days

Heavy smoke on 7 days in 2023, the most of any year.

Last 10 years

10.5 days a year

Medium or heavy smoke, 2016 to 2025.

2025

9 days

Medium or heavy smoke. 25 so far in 2026.

Days with medium or heavy smoke overhead, by year 2011: 2 2012: 4 2013: 0 2014: 0 2015: 4 2016: 1 2017: 1 2018: 3 2019: 4 2020: 6 2021: 16 2022: 10 2023: 45 45 2024: 10 2025: 9 201120122013201420152016201720182019202020212022202320242025
Days each year on which a satellite-traced plume of medium or heavy smoke covered the city 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

24 federal flood insurance claims since 1980, with $128,000 paid.

Flood insurance figures are for Bristol city, the county that contains Bristol.

Federal flood insurance claims by year
Claims per year since 1980. Years with fewer than five claims are not shown.

Claims by ZIP code

Flood insurance claims by ZIP code
2420122$128,000

Flood events since 1996

  • Flood8
  • 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.

River crests

River gauges in Bristol city, the county that contains Bristol.

Highest river crests above flood stage
Apr 17, 1998Beaver Creek (VA) at Bristol8.80−3.20Below flood stage
Apr 13, 2020Beaver Creek (VA) at Bristol8.61−3.39Below flood stage
Aug 19, 2009Beaver Creek (VA) at Bristol7.70−4.30Below flood stage
Jul 29, 2001Beaver Creek (VA) at Bristol7.61−4.39Below flood stage
Mar 28, 2021Beaver Creek (VA) at Bristol7.59−4.41Below flood stage
Mar 18, 2002Beaver Creek (VA) at Bristol7.45−4.55Below flood stage
Feb 7, 2020Beaver Creek (VA) at Bristol7.41−4.59Below flood stage
Jul 20, 2015Beaver Creek (VA) at Bristol7.30−4.70Below flood stage
Aug 9, 2012Beaver Creek (VA) at Bristol7.05−4.95Below flood stage
Oct 8, 2021Beaver Creek (VA) at Bristol6.98−5.02Below flood stage
Jul 10, 2012Beaver Creek (VA) at Bristol6.88−5.12Below flood stage
Feb 23, 2019Beaver Creek (VA) at Bristol6.77−5.23Below flood stage
Jul 5, 2015Beaver Creek (VA) at Bristol6.71−5.29Below flood stage
Aug 1, 2022Beaver Creek (VA) at Bristol6.51−5.49Below flood stage
Aug 18, 2018Beaver Creek (VA) at Bristol6.50−5.50Below flood stage

River gauges

River gauges and their highest listed crests
Beaver Creek (VA) at Bristol12.08.80 ftApr 17, 19980
  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 93 of 1,581 months since 1895 (6%); the longest spell lasted 19 months.

The drought index is for Bristol city, the county that contains Bristol.

93

Months in severe drought or worse since 1895

25

Months in extreme drought

6%

Share of all months, severe or worse

Lowest reading

December 2007

−5.77, extreme drought

Longest severe spell

19 months

May 2007 to November 2008.

Latest month

September 2026

0.00, near normal

Last severe month: November 2008.

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

4 earthquakes of magnitude 4 or more within 50 miles since 1900; the largest was magnitude 4.3 in 2006.

10

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

November 23, 2006

Magnitude 4.3

13 km NW of Raven, Virginia; 38.7 miles away, 0.0 miles deep.

Most recent, magnitude 3 or more

November 23, 2006

Magnitude 4.3

13 km NW of Raven, Virginia; 38.7 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: 1 1983: 0 1984: 1 1985: 0 1986: 0 1987: 0 1988: 2 2 1989: 1 1990: 0 1991: 0 1992: 0 1993: 0 1994: 1 1995: 2 1996: 0 1997: 0 1998: 0 1999: 0 2000: 0 2001: 0 2002: 0 2003: 0 2004: 0 2005: 0 2006: 2 2007: 0 2008: 0 2009: 0 2010: 0 2011: 0 2012: 0 2013: 0 2014: 0 2015: 0 2016: 0 2017: 0 2018: 0 2019: 0 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
Nov 23, 20064.338.70.013 km NW of Raven, Virginia
Nov 2, 20064.342.40.613 km NNW of Raven, Virginia
Apr 10, 19894.336.20.011 km SSE of Vansant, Virginia
Apr 14, 19884.143.90.09 km E of Vansant, Virginia
  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 city centre.
  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

167 events in the National Weather Service record for Bristol city, 163 of them since 1996.

8

Hail reports, 1 inch or larger

0

Hail, 2 inches or larger

28

Damaging gusts, 58 mph+

88

Winter weather events since 1996

0

Heat events since 1996

1

Cold events since 1996

Largest hail

July 27, 2014

1.75 inches

Strongest measured or estimated gust

June 12, 2004

75 mph

Costliest events since 1996

  1. Dec 9, 2009High Wind, Washington$760,000
    National Weather Service narrative

    Emergency management reported that several trees were blown down by non thunderstorm winds near Whitetop Mountain and also in several locations across the county. A church was destroyed at Glade Springs and two large signs were blown down in the county.

  2. Jan 24, 2026Winter Storm, Washington$200,000
    National Weather Service narrative

    A significant and highly damaging ice storm unfolded in Washington County VA as temperatures struggled to get to 32F or above, especially in the northeastern portion of the county. Ice accretion ranged from 0.25 to 0.50 inches across the county, resulting in significant damage. A trained spotter reported a maximum of 0.75 inch in the Emory and Meadowview areas, these locations stayed below freezing for a significant period of time. Extensive utility damage occurred, with power poles, powerlines, and transformers breaking from either ice weight outright or collapse of trees. At least 45% of the county was without power by the evening on the 25th. Snow and sleet accumulations of 0.8…

  3. Feb 14, 2003Flood, Washington$50,000
    National Weather Service narrative

    Four day rainfall totals of two to six inches were reported across southwest Virginia, with the highest amounts occurring in Wise and Lee counties. This rainfall combined with melting snowpack (reports of up to a foot in the higher elevations) to produce widespread flooding of rivers and streams, with evacuations ordered below Big Cherry Dam in Wise county due to water flowing over the spillway. The Clinch and Powell rivers measured significant rises due to the extended rainfall duration and snowmelt in the higher elevations.

  4. Feb 28, 2011Flood$40,000
    National Weather Service narrative

    A trained spotter reported some houses flooded on Kings Mill Pike in Bristol from slow moving thunderstorms.

  5. May 26, 2004Thunderstorm Wind$25,000
    National Weather Service narrative

    Numerous trees were reported down across the city of Bristol.

  6. May 18, 2006Thunderstorm Wind$20,000
    National Weather Service narrative

    Trees and power lines were reported down in Bristol.

  7. Jul 8, 2001Thunderstorm Wind$20,000
  8. May 26, 2004Thunderstorm Wind$20,000
    National Weather Service narrative

    Numerous trees were reported down across Bristol.

  9. Apr 25, 2006Thunderstorm Wind$20,000
    National Weather Service narrative

    Several trees and powerlines down in Bristol. A large limb was downed and broke the windshield of a car.

  10. Dec 16, 2010Ice Storm, Washington$20,000
    National Weather Service narrative

    Law enforcement personnel reported freezing rain produced 0.25 inches of ice on roads in Abingdon, along with 2 inches of snow.

  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 Bristol Airport, 16.4 miles from the city centre, with records from 1937.

All-time high
103°FJun 30, 2012
All-time low
−21°FJan 21, 1985
Warmest night
79°FJul 6, 1943
Coldest day
2°FJan 21, 1985
Wettest day
3.65 inOct 16, 1964
Snowiest day
16.2 inNov 21, 1952
Hottest year
2024mean 58.9°F
Coldest year
1996mean 53.9°F
Wettest year
200365.64 in
Driest year
200722.39 in
Snowiest season
51.0 in1959-60
Average monthly high and low temperature and precipitation, last 30 years, Bristol Airport 32°F 46° 26° 3.7 Jan 51° 30° 3.9 Feb 60° 36° 3.7 Mar 70° 44° 3.7 Apr 77° 53° 3.8 May 84° 61° 3.9 Jun 86° 65° 5.2 Jul 86° 64° 4.0 Aug 81° 57° 3.0 Sep 71° 45° 2.4 Oct 59° 34° 2.8 Nov 50° 30° 3.5 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: 111 1977: 101 1978: 94 1979: 99 1980: 104 1981: 115 1982: 90 1983: 107 1984: 97 1985: 95 1986: 85 1987: 101 1988: 111 1989: 88 1990: 73 1991: 82 1992: 95 1993: 89 1994: 80 1995: 102 1996: 119 119 1997: 94 1998: 77 1999: 97 2000: 108 2001: 100 2002: 106 2003: 98 2004: 98 2005: 96 2006: 99 2007: 99 2008: 107 2009: 90 2010: 109 2011: 95 2012: 84 2013: 99 2014: 109 2015: 84 2016: 93 2017: 85 2018: 82 2019: 79 2020: 76 2021: 92 2022: 97 2023: 70 2024: 82 2025: 103 19761986199620062016
Nights at or below freezing each complete year, last 50 years. Thirty-year average: 94.2.
Snowfall by winter 1976: 22.9 in 1977: 26.2 in 1978: 30.4 in 1979: 17.2 in 1980: 9.5 in 1981: 16.4 in 1982: 21.9 in 1983: 9.9 in 1984: 16.0 in 1985: 21.4 in 1986: 31.5 in 1987: 9.0 in 1988: 17.0 in 1989: 9.5 in 1990: 1.4 in 1991: 0.7 in 1992: 20.0 in 1993: 7.4 in 1994: 9.4 in 1995: 36.9 in 36.9 1996: 2.2 in 1997: 0.0 in 1998: 3.6 in 1999: 5.7 in 2000: 3.6 in 2001: 0.0 in 2002: 3.0 in 2003: 9.1 in 2004: 4.2 in 2005: 9.2 in 2006: 4.3 in 2007: 5.3 in 2008: 8.3 in 2009: 26.7 in 2010: 15.6 in 2011: 1.2 in 2012: 9.2 in 2013: 13.0 in 2014: 15.5 in 2015: 18.4 in 2016: 4.3 in 2017: 7.1 in 2018: 13.7 in 2019: 4.9 in 2020: 10.0 in 2021: 9.7 in 2022: 0.6 in 2023: 3.1 in 2024: 7.7 in 2025: 12.7 in 19761986199620062016
Total snowfall each winter (July to June), last 50 winters.

Median first snow

December 5

Earliest: October 20, 1989

Median last snow

March 8

Latest: April 24, 2005

3 of 89 winters had no measurable snow.

Station Bristol Airport (USW00013877), 1,496 ft elevation, 16.4 miles from the city centre. Daily records from 1937 to October 27, 2026; 100.0% 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

13 since 1953. The most recent: Severe Winter Storm, January 23, 2026.

Declarations for Bristol city.

Federal disaster declarations
Jan 23, 2026Winter StormSevere Winter StormEmergencyEM-3631-VA
Apr 4, 2025Severe StormSevere Winter Storms and FloodingMajor disasterDR-4863-VA
Oct 1, 2024Tropical StormTropical Storm HeleneMajor disasterDR-4831-VA
Sep 29, 2024Tropical StormPost-Tropical Cyclone HeleneEmergencyEM-3621-VA
Apr 2, 2020BiologicalCovid-19 PandemicMajor disasterDR-4512-VA
Mar 13, 2020BiologicalCovid-19EmergencyEM-3448-VA
Oct 15, 2018HurricaneHurricane FlorenceMajor disasterDR-4401-VA
Sep 11, 2018HurricaneHurricane FlorenceEmergencyEM-3403-VA
Oct 29, 2012HurricaneHurricane SandyEmergencyEM-3359-VA
Sep 12, 2005HurricaneHurricane Katrina EvacuationEmergencyEM-3240-VA
Jan 13, 1996SnowstormBlizzard of 96 (Severe Snow Storm)Major disasterDR-1086-VA
Mar 10, 1994SnowstormSevere Ice Storms, FloodingMajor disasterDR-1014-VA
Mar 25, 1993SnowstormSevere Winter StormEmergencyEM-3112-VA

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.

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 USW00013877.
  • 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.