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 Each spoke is this county’s percentile among U.S. counties where that hazard occurs. How it is computed
- 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
DetailsStrongest tornado
F2
April 19, 1971, 7.2 mile path
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.
Every recorded tornado
| Jun 8, 2025 | EF1 | 1.6 | 0 | 0 |
| Jun 8, 2025 | EFU | 0.2 | 0 | 0 |
| Jun 8, 2025 | EFU | 9.4 | 0 | 0 |
| Jun 13, 2023 | EFU | 1.4 | 0 | 0 |
| May 30, 2021 | EFU | 0.5 | 0 | 0 |
| May 30, 2021 | EFU | 0.3 | 0 | 0 |
| May 30, 2021 | EFU | 0.3 | 0 | 0 |
| May 30, 2021 | EFU | 0.8 | 0 | 0 |
| May 16, 2016 | EF0 | 0.2 | 0 | 0 |
| May 16, 2016 | EF1 | 0.9 | 0 | 0 |
| May 18, 2010 | EF0 | 4.1 | 0 | 0 |
| May 18, 2010 | EF0 | 0.5 | 0 | 0 |
| Jun 25, 2006 | F0 | 0.1 | 0 | 0 |
| May 15, 2003 | F0 | 1.0 | 0 | 0 |
| May 15, 2003 | F1 | 10.0 | 0 | 0 |
| Mar 23, 2001 | F0 | 0.1 | 0 | 0 |
| Jun 16, 1997 | F0 | 0.2 | 0 | 0 |
| May 25, 1996 | F1 | 4.0 | 0 | 0 |
| May 25, 1996 | F0 | 5.0 | 0 | 0 |
| May 9, 1994 | F0 | 1.0 | 0 | 0 |
| May 9, 1994 | F1 | 2.0 | 0 | 0 |
| May 10, 1991 | F0 | 0.2 | 0 | 0 |
| May 10, 1991 | F1 | 7.0 | 0 | 0 |
| May 30, 1988 | F0 | 3.0 | 0 | 0 |
| May 14, 1986 | F0 | 0.2 | 0 | 0 |
| Aug 6, 1981 | F0 | 0.1 | 0 | 0 |
| May 5, 1978 | F0 | 2.0 | 0 | 0 |
| May 5, 1978 | F0 | 4.5 | 0 | 0 |
| May 14, 1977 | F1 | 1.0 | 0 | 0 |
| Aug 7, 1974 | F0 | 0.5 | 0 | 0 |
| May 10, 1972 | F2 | 1.0 | 0 | 0 |
| May 10, 1972 | F2 | 1.0 | 0 | 0 |
| Apr 19, 1971 | F2 | 7.2 | 0 | 0 |
| Apr 19, 1971 | F2 | 0.1 | 3 | 0 |
| Jun 25, 1966 | F0 | 2.0 | 0 | 0 |
| Jun 20, 1966 | F0 | 1.0 | 0 | 0 |
| Jun 5, 1961 | F1 | 12.0 | 0 | 0 |
| Jun 5, 1961 | F1 | 21.8 | 0 | 0 |
| Jun 5, 1961 | F1 | 23.9 | 0 | 0 |
| Jun 5, 1961 | F1 | 20.0 | 0 | 0 |
- Injuries and deaths are for the tornado’s whole path, which may extend beyond the county. Deaths recorded within Dallam County: 0.
- 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.
Every large fire
| High Lonesome | 2025 | 24,351 | 24,490 |
| Gillemwater | 2012 | 1,263 | 1,266 |
| 296 | 2011 | 16,769 | 16,782 |
| Pritchard | 2011 | 11,547 | 11,550 |
| Att | 2008 | 1,673 | 1,674 |
| Poole | 2007 | 1,635 | 1,637 |
| Rb-78 | 2006 | 2,122 | 2,124 |
| Milk Shake | 2006 | 3,410 | 3,419 |
| Unnamed | 1999 | 4,477 | 4,478 |
| Rinker | 1997 | 491 | 2,143 |
| Unnamed | 1991 | 2,676 | 2,675 |
| Prairie | 1991 | 1,378 | 1,888 |
| Tex | 1989 | 1,415 | 5,557 |
| Morris | 1984 | 1,110 | 1,108 |
- 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.
- 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.
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.
- 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.
Every earthquake of magnitude 4 or more within 50 miles
| Mar 11, 1948 | 4.5 | Inside |
- 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).
- 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
| Dust storms and dust devils | 3 | 0 |
| Dense fog and smoke | 6 | 1 |
Costliest events since 1996
- 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.
- 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.
- 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…
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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
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.
| Feb 19, 2021 | Severe Ice Storm | DR-4586-TX |
| Feb 14, 2021 | Severe Ice Storm | EM-3554-TX |
| Mar 25, 2020 | Biological | DR-4485-TX |
| Mar 13, 2020 | Biological | EM-3458-TX |
| Mar 14, 2008 | Fire | EM-3284-TX |
| Jan 11, 2006 | Fire | DR-1624-TX |
| Sep 24, 2005 | Hurricane | DR-1606-TX |
| Sep 21, 2005 | Hurricane | EM-3261-TX |
| Sep 2, 2005 | Hurricane | EM-3216-TX |
| Sep 1, 1999 | Fire | EM-3142-TX |
| Aug 26, 1998 | Severe Storm | DR-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.
| Tornadoes since 1950 | 40 | 106 / 254 |
| Tornadoes rated F3/EF3 or stronger | 0 | — |
| Tropical cyclones within 50 mi | 0 | — |
| Hurricane-strength passes within 50 mi | 0 | — |
| Wildfire acres since 1984 | 74,323 | 40 / 254 |
| Flood insurance claims | 3 | 185 / 254 |
| Flood insurance paid | $884 | 213 / 254 |
| Disaster declarations | 11 | 251 / 254 |
| Flood events since 1996 | 4 | 252 / 254 |
| Hail and wind events since 1996 | 318 | 84 / 254 |
| Winter storm events since 1996 | 101 | 1 / 254 |
| Reported damage since 1996 | $3.5 million | 200 / 254 |
| River crests at major flood stage | 0 | — |
| High tide flooding days a year, last 10 years | 0.0 | — |
| Months in severe drought since 1895 | 184 | 139 / 254 |
| Medium or heavy smoke days a year, last 10 years | 14.2 | 19 / 254 |
| Earthquakes M4+ within 50 mi since 1900 | 1 | 92 / 254 |
| Earthquakes M2.5+ in the county since 1973 | 2 | 49 / 254 |
Neighbouring counties
| Cimarron County OK | 56 | 0 |
| Hartley County | 36 | 0 |
| Moore County | 58 | 0 |
| Sherman County | 44 | 0 |
| Union County NM | 47 | 0 |
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.