Jackson County
Population 9,857 (2025) 703 sq mi
Property owners in Jackson County have filed 20 federal flood insurance claims since 1978, 55th most of 87 counties in Minnesota.
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 195022
At a glance
The record for Jackson County in eight numbers. Each links to its section below.
Tornadoes since 1950
22
58th of 87 in Minnesota
About as many as the typical Minnesota county
DetailsStrongest tornado
F3
May 31, 1971, 46.5 mile path
Snowiest season
87.8in
Winter of 2009-10
Tornadoes
About one every 3.5 years since 1950, one of them rated F3/EF3 or stronger.
Strongest
May 31, 1971
F3, 46.5 mile path
100 yards wide.
Most recent
Friday, May 17, 2013
EF0, 0.5 mile path
13 years ago.
Every recorded tornado
| May 17, 2013 | EF0 | 0.5 | 0 | 0 |
| May 4, 2012 | EF0 | 0.5 | 0 | 0 |
| May 4, 2012 | EF0 | 0.5 | 0 | 0 |
| May 4, 2012 | EF0 | 0.5 | 0 | 0 |
| Sep 5, 2004 | F0 | 2.0 | 0 | 0 |
| Jul 10, 2002 | F0 | 0.6 | 0 | 0 |
| Jul 20, 2001 | F0 | 2.0 | 0 | 0 |
| Aug 7, 2000 | F1 | 1.0 | 0 | 0 |
| Aug 7, 2000 | F1 | 1.0 | 0 | 0 |
| Aug 7, 2000 | F1 | 1.0 | 0 | 0 |
| Aug 7, 2000 | F1 | 2.0 | 0 | 0 |
| Jun 27, 1998 | F0 | 2.0 | 0 | 0 |
| Apr 25, 1994 | F0 | 0.1 | 0 | 0 |
| Jun 7, 1993 | F0 | 0.2 | 0 | 0 |
| Apr 26, 1986 | F1 | 0.1 | 0 | 0 |
| May 30, 1985 | F1 | 20.0 | 1 | 0 |
| Jul 16, 1984 | F1 | 2.5 | 0 | 0 |
| May 27, 1978 | F0 | 0.1 | 0 | 0 |
| Jun 14, 1976 | F2 | 13.5 | 6 | 0 |
| May 31, 1971 | F1 | 5.2 | 0 | 0 |
| May 31, 1971 | F1 | 2.3 | 0 | 0 |
| May 31, 1971 | F3 | 46.5 | 0 | 0 |
- Injuries and deaths are for the tornado’s whole path, which may extend beyond the county. Deaths recorded within Jackson 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
No large wildfire has been mapped here since satellite mapping began in 1984.
Smoke overhead
Smokiest year
2023: 72 days
Heavy smoke on 32 days in 2021, the most of any year.
Last 10 years
30.8 days a year
Medium or heavy smoke, 2016 to 2025.
2025
24 days
Medium or heavy smoke. 43 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
20 federal flood insurance claims since 1979, with $366,000 paid.
Most claims in one year
2024: 8 claims
$342,000 paid.
Claims by ZIP code
| 56143 | 16 | $354,000 |
Flood events since 1996
- Flood39
- Flash Flood16
- Heavy Rain4
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
June 26, 2024
West Fork Des Moines River at Jackson, 16.04 ft
4.04 feet above the 12.0 ft flood stage; major flooding by today’s categories.
Most recent moderate or major crest
June 26, 2024
West Fork Des Moines River at Jackson, 16.04 ft
Major flooding.
| Jun 26, 2024 | West Fork Des Moines River at Jackson | 16.04 | +4.04 |
| Mar 24, 2019 | West Fork Des Moines River at Jackson | 14.08 | +2.08 |
| Jul 8, 2018 | West Fork Des Moines River at Jackson | 13.92 | +1.92 |
| Apr 18, 2023 | West Fork Des Moines River at Jackson | 10.77 | −1.23 |
| Apr 4, 2020 | West Fork Des Moines River at Jackson | 10.64 | −1.36 |
| May 26, 2017 | West Fork Des Moines River at Jackson | 10.50 | −1.50 |
| Jun 14, 2022 | West Fork Des Moines River at Jackson | 10.36 | −1.64 |
| May 14, 2018 | Loon Creek near Orleans | 16.54 | −1.46 |
| Jul 5, 2025 | West Fork Des Moines River at Jackson | 9.54 | −2.46 |
| Apr 12, 2021 | West Fork Des Moines River at Jackson | 9.02 | −2.98 |
River gauges
| Loon Creek near Orleans | 18.0 | 16.54 ft | 0 |
| West Fork Des Moines River at Jackson | 12.0 | 16.04 ft | 2 |
- 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 125 of 1,581 months since 1895 (8%); the longest spell lasted 21 months.
125
Months in severe drought or worse since 1895
59
Months in extreme drought
8%
Share of all months, severe or worse
28
Drought reports to the Weather Service since 1996
Lowest reading
July 1911
−7.79, extreme drought
Longest severe spell
21 months
August 1955 to April 1957.
Latest month
September 2026
−0.63, incipient dry spell
Last severe month: July 2021.
- 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
2 earthquakes of magnitude 2.5 or more within 50 miles since 2017; none reached magnitude 4.
0
Magnitude 2.5+ inside the county since 1973
0
Magnitude 3+ within 50 miles since 1973
0
Magnitude 4+ within 50 miles since 1900
0
Magnitude 5+ within 50 miles since 1900
Largest within 50 miles
April 25, 2017
Magnitude 2.8
Near Mankato, Minnesota; 48.3 miles away, 0.0 miles deep.
- 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
699 events in the National Weather Service record, 640 of them since 1996.
83
Hail reports, 1 inch or larger
4
Hail, 2 inches or larger
96
Damaging gusts, 58 mph+
205
Winter weather events since 1996
22
Heat events since 1996
40
Cold events since 1996
Largest hail
June 20, 1998
2.75 inches
Strongest measured or estimated gust
May 19, 1996
98 mph
More event types since 1996
| Lightning | 1 | 0 |
Costliest events since 1996
- Apr 9, 2013Winter Storm, Jackson$15.0 million
National Weather Service narrative
An extended period of precipitation began with freezing rain quickly producing heavy ice accumulations, ranging up to a half inch. The precipitation then changed to sleet and then snow, with sleet and snow accumulations reaching 5 to 10 inches. Many branches, limbs, whole trees, and power lines were downed by the weight of ice and accompanying wind. Both urban areas and rural electric cooperatives suffered major power line damage, with the rural cooperatives alone reporting 6 million dollars in damages. Trees and tree debris blocked many roads, and damaged several vehicles and homes. Major power outages were reported, affecting thousands of people. The winter precipitation made…
- Apr 10, 2019Ice Storm, Jackson$2.8 million
National Weather Service narrative
Ice accumulated to one-half to three quarters of an inch. As winds increased during the night of April 10 into early April 11 with gusts reaching 45 to 50 mph at times, power poles and transmission lines bore the brunt of the worst conditions. Over 1000 power poles were damaged and several hundred miles of transmission lines downed by the weight of the ice accumulation and stress of the high winds. Many roads were closed, including U.S. Highway 71, State Highway 86, and Interstate 90 due to power structures across roadways. Damage costs are rough estimates due to utility costs.
- Nov 14, 1996Ice Storm, Jackson$1.5 million
National Weather Service narrative
An ice storm consisting of several periods of freezing rain caused widespread damage to power lines and poles, and to trees. Power lines snapped, cable wires were ripped down, and tree debris littered and blocked some roads. Thousands lost power, some for 5 days. Travel was curtailed by icy surfaces and there were numerous accidents, although no serious injuries were reported. The ice storm was described as the worst in 40 years in the Worthington area. Many small farm structures were damaged. A 600 foot radio tower in Worthington was toppled. Schools and business were forced to close. Damage continued after the ice storm ended, including some damage occurring when ice melted…
- Jul 1, 2018Flood$750,000
National Weather Service narrative
Rainfall of 3 to 5 inches (locally 5 to 10 inches upstream) during the first three days of July exacerbated flooding through the Des Moines River basin. A state of emergency was declared in the City of Windom with water breaching Island Park, the golf course, and several homes. Several county, state and local roadways flooded for up to a week, including highway 62 and numerous city streets. Significant amounts of crop and pasture land near the Des Moines River were severely impacted by major flooding as river levels climbed to the second highest crest on record at 4.4 feet above flood stage at Windom (gage site WDOM5) on July 7.
- Aug 7, 2000Tornado$400,000
National Weather Service narrative
A tornado damaged several buildings, including businesses and homes, a grain elevator, and trees as it touched down along highway 86 in Lakefield.
- Apr 1, 2019Flood$388,000
National Weather Service narrative
Runoff from occasional precipitation in late March and April maintained significant flooding of agricultural and pasture lands near the Des Moines River. The Des Moines River at Windom (gage site WDOM5) crested at 1.99 feet above flood stage on April 1. Minor flooding continued at the end of the month.
- Jun 21, 2024Flood$355,000
National Weather Service narrative
Rainfall amounts across Jackson County from June 20-22 ranged from 4 to 6 inches. Farther north and upstream, 6 to 9 inches of rain fell across portions of southwest Minnesota. This rainfall resulted in widespread overland flooding and major flooding along the West Fork Des Moines River. ||At peak flooding, the city of Heron Lake became surrounded by flood water, resulting in an evacuation notice for 16 homes. Flood water impacted approximately 120 homes in Heron Lake, one of which was declared destroyed. Municipal crews worked 24/7 to keep water from shutting down the sewer system. ||In the city of Jackson, a temporary levee was breached on June 22, allowing flood water from the…
- Mar 13, 2019Flood$352,000
National Weather Service narrative
All county and township roads were closed to through traffic on March 14. Extensive flood damage was done in many areas. The property damage costs include estimates for public property losses.
- Jan 17, 1996Ice Storm, Jackson$200,000
National Weather Service narrative
Freezing rain caused severe icing which resulted in damage to trees and power lines. The damage was increased by strong winds which developed as the freezing rain changed to snow. Damage from a building fire near Mountain Lake was aggravated by the inability of firefighters to respond quickly due to the icy roads. Icing of furnace regulators also occurred resulting in furnace shutdowns.
- Jul 2, 2000Hail$100,000
National Weather Service narrative
Large hail destroyed or damaged 15,000 acres of corn and soybean crops. The hail also broke windows, dented vehicles, and damaged siding.
- 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 Windom, 14.6 miles from the county’s population centre, with records from 1905.
- All-time high
- 105°FAug 1, 1988
- All-time low
- −36°FJan 7, 1988
- Warmest night
- 86°FJun 5, 1942
- Coldest day
- −19°F2 times, most recently Feb 2, 1917
- Wettest day
- 8.84 inSep 23, 2010
- Snowiest day
- 15.5 inDec 24, 2009
- Hottest year
- 2024mean 50.2°F
- Coldest year
- 1917mean 40.3°F
- Wettest year
- 200544.84 in
- Driest year
- 191014.25 in
- Snowiest season
- 87.8 in2009-10
Median first snow
November 9
Earliest: September 26, 1942
Median last snow
April 4
Latest: May 2, 2013
0 of 71 winters had no measurable snow.
Station Windom (USC00219033), 1,382 ft elevation, 14.6 miles from the population centre. Daily records from 1905 to October 27, 2026; 96.4% 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.
Federal disaster declarations
18 since 1953. The most recent: Severe Storms and Flooding, June 28, 2024.
| Jun 28, 2024 | Flood | DR-4797-MN |
| Apr 7, 2020 | Biological | DR-4531-MN |
| Mar 13, 2020 | Biological | EM-3453-MN |
| Jun 12, 2019 | Flood | DR-4442-MN |
| Sep 5, 2018 | Flood | DR-4390-MN |
| Jul 21, 2014 | Flood | DR-4182-MN |
| May 3, 2013 | Severe Storm | DR-4113-MN |
| Oct 13, 2010 | Severe Storm | DR-1941-MN |
| Aug 23, 2007 | Severe Storm | DR-1717-MN |
| Sep 13, 2005 | Hurricane | EM-3242-MN |
| Jun 23, 1998 | Tornado | DR-1225-MN |
| Jan 16, 1997 | Severe Storm | DR-1158-MN |
| Jan 7, 1997 | Severe Storm | DR-1151-MN |
| Jun 11, 1993 | Severe Storm | DR-993-MN |
| Jun 17, 1976 | Drought | EM-3013-MN |
| Aug 5, 1969 | Flood | DR-268-MN |
| Apr 18, 1969 | Flood | DR-255-MN |
| Apr 11, 1965 | Flood | DR-188-MN |
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 Jackson County stands among 87 counties in Minnesota and 3,143 in the United States.
| Tornadoes since 1950 | 22 | 58 / 87 |
| Tornadoes rated F3/EF3 or stronger | 1 | 30 / 87 |
| Tropical cyclones within 50 mi | 0 | — |
| Hurricane-strength passes within 50 mi | 0 | — |
| Wildfire acres since 1984 | 0 | — |
| Flood insurance claims | 20 | 55 / 87 |
| Flood insurance paid | $366,000 | 47 / 87 |
| Disaster declarations | 18 | 34 / 87 |
| Flood events since 1996 | 59 | 16 / 87 |
| Hail and wind events since 1996 | 271 | 42 / 87 |
| Winter storm events since 1996 | 205 | 12 / 87 |
| Reported damage since 1996 | $23.2 million | 35 / 87 |
| River crests at major flood stage | 2 | 34 / 87 |
| High tide flooding days a year, last 10 years | 0.0 | — |
| Months in severe drought since 1895 | 125 | 70 / 87 |
| Medium or heavy smoke days a year, last 10 years | 30.8 | 58 / 87 |
| Earthquakes M4+ within 50 mi since 1900 | 0 | — |
| Earthquakes M2.5+ in the county since 1973 | 0 | — |
Neighbouring counties
| Cottonwood County | 26 | 0 |
| Dickinson County IA | 29 | 0 |
| Emmet County IA | 22 | 0 |
| Martin County | 22 | 0 |
| Nobles County | 44 | 0 |
| Osceola County IA | 31 | 0 |
| Watonwan County | 23 | 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 USC00219033.
- 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.