NHC HURDAT2 · SPC Tornado Database
Hurricanes and Tornadoes That Hit Somerset, WI
Every tropical system within 75 miles since 1851 and every tornado within 25 miles since 1950.
Data: NOAA NHC HURDAT2 and NOAA SPC tornado and hail reports, through 2025 · Updated
No tropical storm or hurricane has passed within 75 miles of Somerset, Wisconsin since records began in 1851. Since 1950, 96 tornadoes have touched down within 25 miles, 7 of them rated EF3 or stronger.
- Hurricanes
- 0
- Tropical storms
- 0
- Tornadoes
- 96
- EF3 or stronger
- 7
within 75 mi, since 1851
below hurricane strength
within 25 mi, since 1950
36 deaths in all
What the records show for Somerset
The strongest of the 96 tornadoes within 25 miles was an F5 on June 4, 1958; its path came within 24 miles, and it killed 21 people. Of the 96, one had a path within 5 miles of the city centre, and 46 have come since 2000. July has had the most tornadoes, 37. The most recent tornado was on May 15, 2025. Somerset has more tornadoes within 25 miles than 68% of the 416 Wisconsin cities on this site. Hail has been reported within 10 miles 93 times since 1964, with stones up to 3 inches (tea cup size). Somerset has more hail reports within 10 miles than 77% of the 416 Wisconsin cities.
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Tornadoes within 25 miles of Somerset
By decade
- 2020s9
- 2010s16
- 2000s21(1 EF3+)
- 1990s15
- 1980s8(1 EF3+)
- 1970s6(1 EF3+)
- 1960s12(1 EF3+)
- 1950s9(3 EF3+)
| Date | Rating | Distance | Path | Killed / injured |
|---|---|---|---|---|
| Jun 4, 1958 | F5 | 24 mi | 33.7 mi | 21 / 74 |
| May 6, 1965 | F4 | 20 mi | 17.3 mi | 6 / 158 |
| Jun 23, 1952 | F3 | 19 mi | 18.2 mi | 2 / 6 |
| May 25, 2008 | EF3 | 12 mi | 5.96 mi | 1 / 17 |
| Jun 14, 1981 | F3 | 20 mi | 16.2 mi | 1 / 83 |
| Jul 30, 1977 | F3 | 23 mi | 9.1 mi | 0 / 0 |
| May 24, 1958 | F3 | 8 mi | 59.4 mi | 0 / 12 |
| May 10, 1953 | F2 | 10 mi | 105.7 mi | 4 / 27 |
| Jul 18, 1971 | F2 | 25 mi | 38.5 mi | 1 / 2 |
| May 15, 2025 | EF2 | 12 mi | 3.94 mi | 0 / 0 |
| Apr 26, 1994 | F2 | 10 mi | 5 mi | 0 / 1 |
| Jun 12, 1967 | F2 | 11 mi | 0.5 mi | 0 / 0 |
The strongest 12 of 96, by rating and then by deaths. Ratings before February 2007 are on the original Fujita scale.
Hail in Somerset
The Storm Prediction Center has 93 hail reports within 10 miles of Somerset since 1964, made on 53 separate days. Of these, 61 were 1 inch across or larger, and 7 reached 2 inches. The largest, 3 inches (tea cup size), fell on May 25, 2008. The most recent report is from June 19, 2025. June has the most reports, 35.
Source: NOAA Storm Prediction Center severe weather reports, data through 2025.
Weather by month in Somerset
The nearest NOAA station with 1991–2020 climate normals is Stillwater 1 SE, MN, 9 miles southwest of Somerset at 710 feet. July is the warmest, with an average high of 85°F and low of 64°F; January is the coolest, at 27°F and 9°F. June is the wettest at 5.4 inches of precipitation on average and February the driest at 0.9 inches; the year adds up to 35.2 inches over 65 days with at least a tenth of an inch. Highs reach 90°F on about 18 days a year, almost all from June to September. Lows fall below freezing on about 147 nights a year. That 35.2 inches is more than at 100 of the 165 Wisconsin stations used on this site (61%). New Richmond, 7 miles east, has its own station (Baldwin, WI): 33.0 inches a year, 2.2 less than here, and a July average high of 79°F against 85°F.
| Month | High °F | Low °F | Precip. in | Days ≥ 0.1" |
|---|---|---|---|---|
| Jan | 27 | 9 | 1.0 | 3 |
| Feb | 32 | 14 | 0.9 | 3 |
| Mar | 45 | 25 | 1.5 | 4 |
| Apr | 60 | 38 | 3.1 | 7 |
| May | 73 | 50 | 4.2 | 8 |
| Jun | 81 | 60 | 5.4 | 9 |
| Jul | 85 | 64 | 4.5 | 7 |
| Aug | 84 | 62 | 5.3 | 6 |
| Sep | 76 | 55 | 3.2 | 6 |
| Oct | 62 | 42 | 3.2 | 6 |
| Nov | 45 | 28 | 1.7 | 4 |
| Dec | 32 | 16 | 1.2 | 3 |
| Year | 58 | 38 | 35.2 | 65 |
Averages for 1991–2020 at Stillwater 1 SE, MN (710 ft), from NOAA NCEI U.S. Climate Normals. Normals describe the station; the farther a place is from it, and the bigger the difference in height, the more its weather can differ.
Floods, thunderstorm wind and lightning near Somerset
Since 1996, the National Weather Service has logged 87 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Somerset: 78 thunderstorm wind reports, 5 lightning strikes, 2 heavy rain events, 1 flash flood and 1 flood. They killed 1 person and injured 2, and the NWS estimated $47.3 million in property and crop damage. The strongest thunderstorm gust on record here was 92 mph, on June 26, 1998.
July 21, 2009: lightning strike 9 miles from the centre of Somerset — 1 killed.
April 14, 2017: lightning strike 8 miles from the centre of Somerset — 2 injured.
August 13, 2007: thunderstorm wind 6 miles from the centre of Somerset — $45.0 million damage.
Source: NOAA NCEI Storm Events Database, events whose starting point is on record, 1996 to June 30, 2026. Damage is the NWS estimate in the dollars of the year, not insured losses, and NWS notes that some reports are unverified.
Flood insurance claims, disaster declarations and FEMA risk ratings
St. Croix County, which includes Somerset, has been named in 11 federal disaster or emergency declarations since 1965, 8 of them major disasters (by incident: 3 severe storms, 2 biological emergencies, 2 floods, 2 tornadoes). The latest major disaster declaration was Covid-19 Pandemic, on April 4, 2020. FEMA's National Risk Index gives St. Croix County a Relatively Low rating for natural hazard risk overall; by hazard: Relatively High for strong wind; Relatively Moderate for tornadoes, hail and lightning; Relatively Low for inland flooding and heat waves. It models the county's expected loss from all 18 hazards it covers at $36.0 million a year, the 21st highest of 72 Wisconsin counties; of the hazards above, the largest share, $15.7 million (44%), is from inland flooding.
Claims: FEMA, OpenFEMA Dataset FIMA NFIP Redacted Claims – v3, summed over ZIP codes; payments in the dollars of each year, not adjusted for inflation. Declarations: Disaster Declarations Summaries – v2, by county. Retrieved October 25, 2026. 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).
Risk ratings: FEMA, National Risk Index county table, December 2025 (v1.20), retrieved October 26, 2026; ratings compare counties nationwide, are meant for planning and are no substitute for a local risk assessment. This product uses the Federal Emergency Management Agency's National Risk Index dataset API or downloadable datasets 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).
What counts as a pass, the distances and the sources: how this storm history is built.
Cities near Somerset
- Houlton, WI6 mi
- New Richmond, WI7 mi
- Marine On Saint Croix, MN8 mi
- Star Prairie, WI9 mi
- Stillwater, MN9 mi
- Bayport, MN10 mi
- Osceola, WI11 mi
- Hudson, WI11 mi
- Scandia, MN12 mi
- Roberts, WI14 mi
- Mahtomedi, MN15 mi
- Lake Elmo, MN15 mi
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