Grant County

Every recorded tornado

1. Injuries and deaths are for the tornado’s whole path, which may extend beyond the county. Deaths recorded within Grant 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.

Every large fire

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

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.

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

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.

Every earthquake of magnitude 4 or more within 50 miles

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.

More event types since 1996

Costliest events since 1996

1. Mar 26, 2026Wildfire, Grant$2.2 million
   National Weather Service narrative

   Fire initiated shortly after midnight MDT of March 26th approximately 2 miles north of Ashby. Aided by strong northerly winds, the fire raced to the south consuming approximately 34,748 acres in Grant County. Ashby and Hyannis were evacuated the night of the 26th. Four primary structures were consumed in the fire along with fencing and 3 outbuildings.

2. Jul 1, 2012Drought, Grant$1.0 million
   National Weather Service narrative

   Severe drought conditions (D2), which began the month of June, intensified to extreme drought conditions (D3) by the end of the month. Pastures that make up close to 91 percent of the land use in Grant County (2007 Census USDA) was rated 69% poor or very poor. The lack of rain limited grazing capacity and created increased sales of livestock as the departure from normal precipitation reached below 3 inches. Crop producers began silage of dryland corn. On July 23rd all counties in Nebraska were approved for CRP Emergency Haying and Grazing. The drought continued into August.

3. Mar 26, 2026Wildfire, Grant$165,000
   National Weather Service narrative

   Fire initiated shortly after midnight on March 26th. Aided by strong northerly winds, the fire raced south. By the time the fire was contained, it had consumed 14,082 acres of rangeland.

4. Jun 29, 2000Hail$100,000
5. Mar 12, 2026Wildfire, Grant$41,000
   National Weather Service narrative

   The Morrill fire entered southwestern Grant County during the evening hours of March 12th. The fire consumed 872 acres of rangeland in Grant County.

6. Jul 8, 2004Thunderstorm Wind$38,000
   National Weather Service narrative

   Numerous large trees were snapped off with a few of them falling onto parked vehicles or into buildings. An airplane hanger was destroyed, a portion of a roof was blown off a lumberyard storage shed, and 31 power poles were also broken off by the intense thunderstorm winds.

7. Apr 4, 2009Blizzard, Grant$30,000
   National Weather Service narrative

   Blizzard conditions began across Grant County by 11 am MST on April 4, 2009. Snowfall amounts were around 12 inches. Strong north winds of 30 to 40 mph with higher gusts caused significant blowing and drifting snow with reduced visibility to near zero during the late afternoon and evening hours. Snow drifts up to 5 feet were reported. Several calves died during the storm.

8. Aug 26, 2002Flash Flood$25,000
   National Weather Service narrative

   A foot of water covered Highway 2 while several other roadways also had water over them.

9. Jul 2, 2001Hail$15,000
10. Sep 11, 2019Thunderstorm Wind$14,000
    National Weather Service narrative

    Utility company reports 14 power poles down northeast of Hyannis. Power outages reported in the area.

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.

All-time high

113°FJul 25, 1936

All-time low

−33°FDec 22, 1989

Warmest night

79°FJul 27, 2026

Coldest day

−14°FFeb 4, 1989

Wettest day

3.58 inSep 4, 1937

Snowiest day

24.0 inMar 27, 1939

Hottest year

1938mean 51.7°F

Coldest year

1993mean 45.1°F

Wettest year

200928.56 in

Driest year

19319.02 in

Snowiest season

66.5 in1979-80

Station Arthur (USC00250365), 3,651 ft elevation, 27.7 miles from the population centre. Daily records from 1929 to October 25, 2026; 98.4% 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.

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.

Neighbouring counties

• 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 USC00250365.
• 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.