Dallam County

Population 7,508 (2025) 1,503 sq mi

Large wildfires have burned 74,323 acres of Dallam County since 1984, 40th most of 254 counties in Texas; the largest was the High Lonesome Fire in 2025.

Hazard fingerprint for Dallam County Tornado: 35th percentile. Tropical: 0th percentile. Wildfire: 71th percentile. Flood: 1th percentile. Hail & wind: 21th percentile. Heat: 0th percentile. Cold: 75th percentile. Winter: 69th 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 195040
  • Wildfire burn scars since 198414

At a glance

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

Acres burned since 1984

74,323

40th of 254 in Texas

14 large fires; the largest was High Lonesome, 2025

Details

Tornadoes since 1950

40

106th of 254 in Texas

About as many as the typical Texas county

Details

Flood insurance claims

3

185th of 254 in Texas

$884 paid since 2015

Details

Strongest tornado

F2

April 19, 1971, 7.2 mile path

Largest earthquake within 50 mi

4.5magnitude

March 11, 1948, inside the county

Details

Federal disaster declarations

11

Most recent: Severe Winter Storms, 2021

Details

Record high

110°F

June 26, 2011

Details

Record low

−21°F

January 4, 1959

Details

Tornadoes

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

Strongest

April 19, 1971

F2, 7.2 mile path

150 yards wide.

Most recent

Sunday, June 8, 2025

EF1, 1.6 mile path

Within the past year.

Tornadoes by decade Doppler radar era² 1950s: 0 1960s: 6 6 1970s: 8 8 1980s: 3 3 1990s: 7 7 2000s: 4 4 2010s: 4 4 2020s: 8 8 1950s1960s1970s1980s1990s2000s2010s2020s
Recorded tornadoes per decade. The 2020s are incomplete.
Tornadoes by month J: 0 F: 0 M: 1 A: 2 M: 23 23 J: 12 J: 0 A: 2 S: 0 O: 0 N: 0 D: 0 JFMAMJJASOND
By month of occurrence, all years.

Every recorded tornado

Tornadoes in Dallam County since 1950
Jun 8, 2025EF11.65000
Jun 8, 2025EFU0.25000
Jun 8, 2025EFU9.410000
Jun 13, 2023EFU1.43500
May 30, 2021EFU0.510000
May 30, 2021EFU0.32500
May 30, 2021EFU0.35000
May 30, 2021EFU0.810000
May 16, 2016EF00.25000
May 16, 2016EF10.92500
May 18, 2010EF04.12500
May 18, 2010EF00.52500
Jun 25, 2006F00.12500
May 15, 2003F01.050000
May 15, 2003F110.01,32000
Mar 23, 2001F00.12500
Jun 16, 1997F00.22300
May 25, 1996F14.020000
May 25, 1996F05.010000
May 9, 1994F01.02300
May 9, 1994F12.010000
May 10, 1991F00.24000
May 10, 1991F17.016000
May 30, 1988F03.010000
May 14, 1986F00.21000
Aug 6, 1981F00.16700
May 5, 1978F02.03000
May 5, 1978F04.53000
May 14, 1977F11.02000
Aug 7, 1974F00.52000
May 10, 1972F21.010000
May 10, 1972F21.010000
Apr 19, 1971F27.215000
Apr 19, 1971F20.11030
Jun 25, 1966F02.03300
Jun 20, 1966F01.02000
Jun 5, 1961F112.01000
Jun 5, 1961F121.833300
Jun 5, 1961F123.950000
Jun 5, 1961F120.015000
  1. Injuries and deaths are for the tornado’s whole path, which may extend beyond the county. Deaths recorded within Dallam 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

74,323 acres burned in 14 large fires since 1984, equal to 7.7% of the land.

Largest

March 18, 2025

High Lonesome Fire, 24,490 acres

24,351 acres inside Dallam County.

Most recent

March 18, 2025

High Lonesome Fire

24,490 acres in total.

Acres burned since 1984, cumulative 1984: 1,1111989: 1,4151991: 4,0551997: 4911999: 4,4782006: 5,5332007: 1,6362008: 1,6742011: 28,3172012: 1,2632025: 24,351 74,323 acres 198519901995200020052010201520202025
Running total of acres burned inside the county (line) and each year’s acres (bars).

Every large fire

Large wildfires since 1984
High Lonesome202524,35124,490
Gillemwater20121,2631,266
296201116,76916,782
Pritchard201111,54711,550
Att20081,6731,674
Poole20071,6351,637
Rb-7820062,1222,124
Milk Shake20063,4103,419
Unnamed19994,4774,478
Rinker19974912,143
Unnamed19912,6762,675
Prairie19911,3781,888
Tex19891,4155,557
Morris19841,1101,108
  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: 37 days

Heavy smoke on 15 days in 2020, the most of any year.

Last 10 years

14.2 days a year

Medium or heavy smoke, 2016 to 2025.

2025

7 days

Medium or heavy smoke. 18 so far in 2026.

Days with medium or heavy smoke overhead, by year 2011: 13 2012: 13 2013: 8 2014: 1 2015: 3 2016: 2 2017: 9 2018: 9 2019: 1 2020: 33 2021: 37 37 2022: 20 2023: 12 2024: 12 2025: 7 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

3 federal flood insurance claims since 2015, with $884 paid.

Federal flood insurance claims by year
Claims per year since 2015. Years with fewer than five claims are not shown.

Flood events since 1996

  • Flash Flood2
  • Flood2

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 184 of 1,581 months since 1895 (12%); the longest spell lasted 44 months.

184

Months in severe drought or worse since 1895

71

Months in extreme drought

12%

Share of all months, severe or worse

69

Drought reports to the Weather Service since 1996

Lowest reading

August 2026

−5.82, extreme drought

Longest severe spell

44 months

September 1933 to April 1937.

Latest month

September 2026

−2.84, moderate drought

Last severe month: August 2026.

Months in severe drought or worse, by year 1895: 0 1896: 3 1897: 0 1898: 0 1899: 0 1900: 0 1901: 0 1902: 0 1903: 0 1904: 4 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: 6 1934: 12 12 1935: 12 1936: 12 1937: 10 1938: 4 1939: 0 1940: 0 1941: 0 1942: 0 1943: 0 1944: 0 1945: 0 1946: 0 1947: 0 1948: 0 1949: 0 1950: 0 1951: 0 1952: 0 1953: 4 1954: 8 1955: 9 1956: 12 1957: 2 1958: 0 1959: 0 1960: 0 1961: 0 1962: 0 1963: 1 1964: 5 1965: 0 1966: 0 1967: 0 1968: 0 1969: 0 1970: 0 1971: 0 1972: 0 1973: 0 1974: 1 1975: 0 1976: 1 1977: 0 1978: 0 1979: 0 1980: 0 1981: 1 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: 2 1997: 0 1998: 0 1999: 0 2000: 1 2001: 0 2002: 4 2003: 1 2004: 0 2005: 0 2006: 3 2007: 0 2008: 3 2009: 0 2010: 0 2011: 8 2012: 11 2013: 6 2014: 2 2015: 0 2016: 0 2017: 0 2018: 1 2019: 0 2020: 7 2021: 4 2022: 12 2023: 4 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

1 earthquake of magnitude 4 or more within 50 miles since 1900; the largest was magnitude 4.5 in 1948.

2

Magnitude 2.5+ inside the county since 1973

21

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

March 11, 1948

Magnitude 4.5

18 km N of Dalhart, Texas; inside the county, 3.1 miles deep.

Most recent, magnitude 3 or more

March 31, 2022

Magnitude 3.4

8 km S of Clayton, New Mexico; 11.5 miles away.

Earthquakes of magnitude 3 or more within 50 miles, by year 1973: 0 1974: 0 1975: 0 1976: 1 1977: 0 1978: 0 1979: 0 1980: 0 1981: 0 1982: 2 1983: 1 1984: 0 1985: 0 1986: 0 1987: 0 1988: 0 1989: 0 1990: 0 1991: 0 1992: 0 1993: 2 1994: 0 1995: 0 1996: 1 1997: 0 1998: 1 1999: 0 2000: 6 6 2001: 0 2002: 1 2003: 0 2004: 0 2005: 0 2006: 1 2007: 0 2008: 0 2009: 0 2010: 1 2011: 0 2012: 1 2013: 0 2014: 0 2015: 0 2016: 0 2017: 0 2018: 0 2019: 0 2020: 0 2021: 1 2022: 2 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
Mar 11, 19484.5Inside3.118 km N of Dalhart, Texas
  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

654 events in the National Weather Service record, 562 of them since 1996.

157

Hail reports, 1 inch or larger

22

Hail, 2 inches or larger

79

Damaging gusts, 58 mph+

101

Winter weather events since 1996

0

Heat events since 1996

25

Cold events since 1996

Largest hail

June 13, 2023

4.00 inches

Strongest measured or estimated gust

August 13, 2017

110 mph

More event types since 1996

Other Storm Events types since 1996
Dust storms and dust devils300Jun 13, 2022
Dense fog and smoke610Dec 20, 2014

Costliest events since 1996

  1. Jun 11, 1999Hail$1.5 million
    National Weather Service narrative

    A cold front south of the Texas panhandle along with several disturbances in the upper levels of the atmosphere approaching the northwest Texas panhandle from New Mexico triggered severe thunderstorms with large and damaging hail during the evening hours.

  2. Feb 24, 2013Blizzard, Dallam$660,000
    National Weather Service narrative

    Blizzard conditions reported by the National Weather Service COOP Observer in Dalhart, and reported 1.0 inch to 3.0 inches of storm total snow across the county.

  3. Mar 29, 2014Wildfire, Dallam$340,000
    National Weather Service narrative

    The Kerrick Wildfire began approximately 1418CST about ten miles southwest of Griggs Oklahoma in extreme northeastern Dallam county Texas. The wildfire started just west of U.S. Highway 287 near Farm to Market Road 807 and consumed an estimated five acres. The wildfire destroyed two homes and three outbuildings. There was one home which was damaged. There were no reports of injuries or fatalities. The cause of the wildfire was determined to be from burning tumbleweeds in some horse pens that got out of control. There were a total of twelve fire departments or other fire agencies that responded to the wildfire including the Stratford Volunteer Fire Department, the Boise City Fire…

  4. May 25, 1996Tornado$200,000
    National Weather Service narrative

    An active tornadic day with minimum hail reports. The tornado south of Adrian did about $75K in damage to two houses and barns and blew down a dozen power poles. The second tornado near Texline hit the Shumbarger Ranch damaging barns, a trailer house and feed lot. This damage was estimated at $200K and the tornado tracks are also estimated.

  5. Oct 25, 1997Winter Storm, Dallam$200,000
    National Weather Service narrative

    A very strong winter weather storm moved across the central plains states through the day Saturday. This winter storm affected the northwest and northern Texas Panhandle producing four inches of snow at Texline with generally one to three inches elsewhere. High winds accompanied the winter storm which produced blowing and drifting of the snow which resulted in numerous road closures. Drifts were reported to be as high as four feet near Perryton.

  6. Jun 4, 2003Thunderstorm Wind$125,000
    National Weather Service narrative

    Four sprinklers loaded with water were picked up...twisted and then turned over by the high winds.

  7. Aug 9, 2001Thunderstorm Wind$80,000
    National Weather Service narrative

    The high winds blew over a one hundred plus foot radio tower onto a building and fence of the Cow Feed Company in Dalhart. Also damaged was the Junior High School in Dalhart when a one hundred and ten foot communication tower fell on the roof. The high winds took a roof off of a building in Dalhart. Two trees were uprooted and several tree limbs were blown down.

  8. Jun 4, 2003Hail$70,000
    National Weather Service narrative

    The large hail broke out all of the skylights in a house and barn plus all of the windows in the the house and tore siding off the house. At least one thousand and five acres of corn, three thousand acres of wheat, and two thousand acres of feed milo plus an additional fourteen circles of corn and wheat were destroyed by the hail.

  9. Feb 26, 2023High Wind, Dallam$50,000
    National Weather Service narrative

    Reports were received of metal roofing being torn off of a building as well as full size trees up rooted in Dalhart. Also received reports of a semi truck blown over along with the collapse of a grain bin in Dalhart.

  10. Jun 14, 2024Thunderstorm Wind$35,000
    National Weather Service narrative

    Video that was posted on social media shows a grain silo destroyed and laying across the south bound lane of Highway 87.

  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 Dalhart FAA Airport, 5.6 miles from the county’s population centre, with records from 1948.

All-time high
110°FJun 26, 2011
All-time low
−21°FJan 4, 1959
Warmest night
79°FJul 3, 1957
Coldest day
2°FJan 3, 1959
Wettest day
4.52 inAug 2, 1985
Snowiest day
12.5 inJan 21, 1983
Hottest year
2024mean 58.9°F
Coldest year
1961mean 53.9°F
Wettest year
198528.03 in
Driest year
20116.04 in
Snowiest season
47.1 in1982-83
Average monthly high and low temperature and precipitation, last 30 years, Dalhart FAA Airport 32°F 51° 21° 0.4 Jan 54° 23° 0.3 Feb 64° 31° 0.8 Mar 71° 39° 1.2 Apr 80° 49° 1.5 May 90° 60° 2.1 Jun 93° 64° 2.4 Jul 91° 63° 1.9 Aug 85° 55° 1.5 Sep 73° 42° 1.7 Oct 61° 30° 0.6 Nov 51° 22° 0.5 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: 10 1977: 19 1978: 37 1979: 20 1980: 46 1981: 18 1982: 8 1983: 32 1984: 8 1985: 21 1986: 20 1989: 6 1990: 36 1991: 5 1992: 8 1993: 19 1994: 41 1995: 33 1996: 23 1997: 21 1998: 37 1999: 24 2000: 58 2001: 45 2002: 44 2003: 40 2004: 17 2005: 28 2006: 42 2007: 24 2008: 24 2009: 32 2010: 47 2011: 82 82 2012: 65 2013: 47 2014: 41 2015: 48 2016: 51 2017: 36 2018: 41 2019: 53 2020: 66 2021: 39 2022: 58 2023: 41 2024: 57 2025: 27 19761986199820082018
Days reaching 95°F each complete year, last 50 years. Thirty-year average: 41.9.
Snowfall by winter 1971: 6.0 in 1972: 32.1 in 1973: 11.3 in 1974: 20.6 in 1975: 3.0 in 1976: 11.3 in 1977: 31.4 in 1978: 17.5 in 1979: 12.1 in 1980: 7.5 in 1981: 10.4 in 1982: 47.1 in 47.1 1983: 20.1 in 1984: 5.9 in 1985: 11.5 in 1986: 19.5 in 1987: 27.6 in 1988: 4.2 in 1989: 14.1 in 1990: 12.8 in 1991: 9.0 in 1992: 46.0 in 1993: 23.8 in 1994: 17.0 in 1995: 10.2 in 1996: 17.1 in 1997: 41.3 in 1998: 32.4 in 1999: 12.7 in 2013: 17.4 in 2014: 34.1 in 2015: 4.0 in 2016: 11.3 in 2017: 2.3 in 2018: 0.0 in 2019: 12.2 in 2020: 27.4 in 1971198119912014
Total snowfall each winter (July to June), last 50 winters.

Median first snow

November 20

Earliest: September 29, 1984

Median last snow

March 26

Latest: May 6, 1999

1 of 59 winters had no measurable snow.

Station Dalhart FAA Airport (USW00093042), 3,988 ft elevation, 5.6 miles from the population centre. Daily records from 1948 to October 26, 2026; 99.9% 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

11 since 1953. The most recent: Severe Winter Storms, February 19, 2021.

Federal disaster declarations
Feb 19, 2021Severe Ice StormSevere Winter StormsMajor disasterDR-4586-TX
Feb 14, 2021Severe Ice StormSevere Winter StormEmergencyEM-3554-TX
Mar 25, 2020BiologicalCovid-19 PandemicMajor disasterDR-4485-TX
Mar 13, 2020BiologicalCovid-19EmergencyEM-3458-TX
Mar 14, 2008FireWildfiresEmergencyEM-3284-TX
Jan 11, 2006FireExtreme Wildfire ThreatMajor disasterDR-1624-TX
Sep 24, 2005HurricaneHurricane RitaMajor disasterDR-1606-TX
Sep 21, 2005HurricaneHurricane RitaEmergencyEM-3261-TX
Sep 2, 2005HurricaneHurricane Katrina EvacuationEmergencyEM-3216-TX
Sep 1, 1999FireExtreme Fire HazardsEmergencyEM-3142-TX
Aug 26, 1998Severe StormTropical Storm CharleyMajor disasterDR-1239-TX

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 Dallam County stands among 254 counties in Texas and 3,143 in the United States.

Ranks
Tornadoes since 195040106 / 254638 / 3,143
Tornadoes rated F3/EF3 or stronger0——
Tropical cyclones within 50 mi0——
Hurricane-strength passes within 50 mi0——
Wildfire acres since 198474,32340 / 254367 / 3,143
Flood insurance claims3185 / 2542,656 / 3,143
Flood insurance paid$884213 / 2542,837 / 3,143
Disaster declarations11251 / 2542,727 / 3,143
Flood events since 19964252 / 2543,058 / 3,143
Hail and wind events since 199631884 / 2541,105 / 3,143
Winter storm events since 19961011 / 254937 / 3,143
Reported damage since 1996$3.5 million200 / 2542,548 / 3,143
River crests at major flood stage0——
High tide flooding days a year, last 10 years0.0——
Months in severe drought since 1895184139 / 254414 / 3,143
Medium or heavy smoke days a year, last 10 years14.219 / 2541,742 / 3,143
Earthquakes M4+ within 50 mi since 1900192 / 2541,397 / 3,143
Earthquakes M2.5+ in the county since 1973249 / 254665 / 3,143

Neighbouring counties

Neighbouring counties
Cimarron County OK56069,4550
Hartley County36099,3901
Moore County58080,8880
Sherman County4404,5930
Union County NM470191,0920

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 USW00093042.
  • 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.