St. Croix County

Every recorded tornado

1. Injuries and deaths are for the tornado’s whole path, which may extend beyond the county. Deaths recorded within St. Croix County: 2.
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.

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.

More event types since 1996

Costliest events since 1996

1. Aug 13, 2007Thunderstorm Wind$35.0 million
   National Weather Service narrative

   A large swath of severe thunderstorm wind damage occurred from just west of New Richmond to the Glenwood City area, as determined by a National Weather Service damage survey. This swath of damage occurred within an approximately two to four mile width between these two cities. Numerous reports of damage were provided by the St. Croix County emergency manager, trained spotters, amateur radio operators and law enforcement. The New Richmond Airport AWOS also measured 60 knots at 2043 CST (two hangars were damaged). Some general reports include: 109 homes damaged or severely damaged, 48 barns damaged or severely damaged. In New Richmond, many 6 inch diameter or larger trees reported…

2. Jun 29, 2020Flash Flood$8.0 million
   National Weather Service narrative

   Parts of St. Croix County received over 8 to 9 inches of rain causing flooding and washed out roads across the county. The worst areas that experienced significant flooding were the Kinnickinnic, Rush and Eau Galle Recreation River areas, and the towns of Hammond, Baldwin, Emerald, Glenwood City, and Cylon. ||Some of the specific roads that were closed or washed out during the height of the flooding were: 1000 Block of 190th Street in Baldwin, 2100 110th Avenue in Baldwin, Country Road TK, DD & 240th Street in Baldwin, Highway 12 & 220th Street in Baldwin Township, 2254 130th Avenue in Emerald, 2900 Block of 200th Avenue in Glenwood City, and West Blvd & Highway 65 in…

3. Jun 11, 2005Tornado$3.6 million
   National Weather Service narrative

   A tornado that was on the ground for 8 miles first touched down near Oak Drive in Section 24 of Kinnickinnic Township about 7 miles southwest of Hammond. A couple trying to outrun the storm in their car said that the funnel suddenly surrounded their vehicle. The car began to shake and the back end started to lift off the ground while at the same time branches were flying by the car. At a property nearby the tornado sheared off a garage roof, twisted a swing set up "like a pretzel", broke windows, and downed trees. The tornado pushed northeast and crossed Interstate 94 where it was witnessed by several motorists. Next the twister damaged a farmstead near the intersection of County…

4. May 1, 2001Hail$3.0 million
   National Weather Service narrative

   Wind driven hail damaged numerous homes and vehicles on the north side of River Falls.

5. May 19, 1996Thunderstorm Wind$2.7 million
   National Weather Service narrative

   Structural damage from Roberts to Baldwin and Glenwood City. Estimated windspeed. Damage estimate for entire county.

6. May 19, 1996Thunderstorm Wind$2.5 million
   National Weather Service narrative

   A dozen homes severely damaged in Troy township, just south of Hudson. Estimated damage cost for entire county.

7. May 26, 2012Lightning$750,000
   National Weather Service narrative

   The St. Croix County, Wisconsin, sheriff's office indicated that a fire in a $1 million home in the 200 block of St. Anne's Parkway in Troy Township, just south of Hudson was caused by a lightning strike. Smoke and flames were shooting out of the large home's roof, where extensive damage occurred.

8. Jul 14, 2010Tornado$500,000
   National Weather Service narrative

   Thirty homes sustained damage, including one with major damage. Dozens of trees were broken or snapped.

9. Aug 8, 2009Tornado$500,000
   National Weather Service narrative

   A damage survey determined an EF-1 tornado touched down and tracked approximately six miles to two miles southeast of Boardman, Wisconsin. Numerous trees were snapped off or uprooted. Several garages and a boat were blown away. This tornado was also accompanied by very strong southerly inflow winds that also knocked down numerous trees 1/4 to 1/2 mile south of the tornado.

10. Sep 17, 2021Thunderstorm Wind$500,000
    National Weather Service narrative

    There were numerous downed trees and power lines in and around the city of Hudson. Significant damage occurred to the Hudson library. Windows were blown out and debris blew into the library and surrounding areas.

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

109°FJul 15, 1936

All-time low

−47°FFeb 16, 1936

Warmest night

82°FJun 8, 1987

Coldest day

−18°F2 times, most recently Jan 24, 1936

Wettest day

7.37 inJun 1, 1965

Snowiest day

18.0 inMar 13, 2006

Hottest year

1987mean 49.6°F

Coldest year

1950mean 39.9°F

Wettest year

194243.86 in

Driest year

197615.73 in

Snowiest season

85.4 in2012-13

Station River Falls (USC00477226), 940 ft elevation, 11.4 miles from the population centre. Daily records from 1918 to October 20, 2026; 98.2% 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 USC00477226.
• 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.