Kewaunee County

Every recorded tornado

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

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.

Claims by ZIP code

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

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.

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.

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. Apr 13, 2018Winter Storm, Kewaunee$750,000
   National Weather Service narrative

   The highest reported snowfall total in Kewaunee County was 18.5 at Kewaunee.

2. Aug 9, 2025Lightning$125,000
   National Weather Service narrative

   A house was struck by lightning and started on fire. The fire produced around $125,000 worth of damage.

3. Mar 14, 2019Flood$121,000
   National Weather Service narrative

   Runoff from rainfall and melting snow, along with clogged storm drains and ice jams, caused numerous roads, ditches, rivers and streams to flood throughout Kewaunee County. Some of the roads were damaged by the flooding and remained closed even after the water receded. One home sustained minor flood damage. The Kewaunee River reached moderate flood stage just west of Kewaunee. A county-wide state of emergency was declared on March 15th.

4. Jun 6, 1999Thunderstorm Wind$50,000
   National Weather Service narrative

   Thunderstorms that developed in north-central Iowa on June 5 moved into central, and parts of east-central Wisconsin. High winds from the storms downed power poles and wires, causing more than 20,000 customers to lose electrical service. Damage to ginseng crops and trees was reported in Wausau (Marathon county). Tree damage was also reported at Antigo (Langlade county), Wittenberg (Shawano county), Neopit (Menominee county) and Wisconsin Rapids (Wood county). About 40 trees were "snapped off like toothpicks" in Marshfield (Wood county). Lightning caused a fire in Rhinelander (Oneida county) that destroyed a house. Another strike blew an electrical meter off the side of a house in…

5. Aug 7, 2013Tornado$50,000
   National Weather Service narrative

   The tornado that formed in Brown County at 12:59 am CDT continued east-southeast into Kewaunee County, crossing the county line 2.9 miles southwest of Pilsen at 1:06 am CDT. The tornado caused the walls and roof of a barn to collapse (DI 1, DOD 6) and damaged the tops of two silos. In addition, the tornado damaged and uprooted several dozen trees along its path. Average path width in Kewaunee County was 75 yards.

6. Aug 20, 2016Tornado$25,000
   National Weather Service narrative

   A tornado formed and moved northeast on the west side of the city of Kewaunee. About 100 trees sustained some damage (DI 27,28 DOD 1,2) and several were uprooted in wet soil. Several homes had shingle or siding damage (DI 2, DOD 1,2). A baseball dugout at a school was blown down. Average path width was about 75 yards.

7. Oct 21, 2019Lakeshore Flood, Kewaunee$20,000
   National Weather Service narrative

   Lakeshore flooding resulted in tons of debris washing up on beaches near Algoma. Heavy damage and erosion occurred in several spots in Algoma, including the waves carved out a hollow more than six feet high that comes within about 3 feet of the Algoma Chamber of Commerce building. A historical marker, the Christmas Tree Ship Point suffered significant damage due to the high waves.

8. Jun 6, 1999Thunderstorm Wind$15,000
   National Weather Service narrative

   Thunderstorms that developed in north-central Iowa on June 5 moved into central, and parts of east-central Wisconsin. High winds from the storms downed power poles and wires, causing more than 20,000 customers to lose electrical service. Damage to ginseng crops and trees was reported in Wausau (Marathon county). Tree damage was also reported at Antigo (Langlade county), Wittenberg (Shawano county), Neopit (Menominee county) and Wisconsin Rapids (Wood county). About 40 trees were "snapped off like toothpicks" in Marshfield (Wood county). Lightning caused a fire in Rhinelander (Oneida county) that destroyed a house. Another strike blew an electrical meter off the side of a house in…

9. Nov 10, 1998High Wind, Kewaunee$10,000
   National Weather Service narrative

   An intense area of low pressure moved across the Midwest on November 10, producing very high winds, rain and snow across the region. The low, which tracked from central Iowa to western Lake Superior, resulted in record minimum pressures in Iowa and Minnesota and an unusually widespread high wind event across Wisconsin. The strong winds lasted for much of the day.The high winds caused one fatality and an injury in the area, both in Door county. A 67 year old Door county woman died a week after being blown down by a strong gust of wind. Her head hit the concrete ground, causing the fatal injury.Trees, street signs and power poles were damaged or destroyed by the strong winds across…

10. Aug 25, 1996Thunderstorm Wind$2,000
    National Weather Service narrative

    Thunderstorm winds caused roof and chimney damage to a home in the Bolt 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

104°F2 times, most recently Jul 8, 1936

All-time low

−29°FJan 20, 1985

Warmest night

84°FJun 19, 1995

Coldest day

−11°FJan 7, 2014

Wettest day

4.92 inJul 24, 1912

Snowiest day

15.2 inMar 14, 1997

Hottest year

1998mean 48.5°F

Coldest year

1917mean 40.3°F

Wettest year

201941.31 in

Driest year

196319.67 in

Snowiest season

95.1 in2008-09

Station Kewaunee (USC00474195), 593 ft elevation, 6.2 miles from the population centre. Daily records from 1908 to May 31, 2026; 93.1% 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 USC00474195.
• 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.