NHC HURDAT2 · SPC Tornado Database
Hurricanes and Tornadoes That Hit Elroy, 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 Elroy, Wisconsin since records began in 1851. Since 1950, 63 tornadoes have touched down within 25 miles, 3 of them rated EF3 or stronger.
- Hurricanes
- 0
- Tropical storms
- 0
- Tornadoes
- 63
- EF3 or stronger
- 3
within 75 mi, since 1851
below hurricane strength
within 25 mi, since 1950
3 deaths in all
What the records show for Elroy
The strongest of the 63 tornadoes within 25 miles was an F4 on April 19, 1957; its path came within 10 miles, and it killed 1 person. The deadliest, an F2 on August 12, 1985, killed 2 people. Of the 63, 6 had paths within 5 miles of the city centre, and 19 have come since 2000. August has had the most tornadoes, 17. The most recent tornado was on July 16, 2025. Of the 416 Wisconsin cities on this site, 62% have more tornadoes within 25 miles than Elroy. Hail has been reported within 10 miles 54 times since 1959, with stones up to 2 inches (hen egg size). Of the 416 Wisconsin cities, 50% have more hail reports within 10 miles than Elroy.
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Tornadoes within 25 miles of Elroy
By decade
- 2020s8
- 2010s5
- 2000s6
- 1990s5
- 1980s15(1 EF3+)
- 1970s6
- 1960s14
- 1950s4(2 EF3+)
| Date | Rating | Distance | Path | Killed / injured |
|---|---|---|---|---|
| Apr 19, 1957 | F4 | 10 mi | 21.1 mi | 1 / 0 |
| Jul 3, 1983 | F3 | 23 mi | 1 mi | 0 / 8 |
| Apr 19, 1957 | F3 | 4 mi | 9 mi | 0 / 0 |
| Aug 12, 1985 | F2 | 4 mi | 22 mi | 2 / 22 |
| Jun 15, 2022 | EF2 | 15 mi | 22.86 mi | 0 / 2 |
| May 22, 2011 | EF2 | 24 mi | 64.5 mi | 0 / 1 |
| Apr 10, 2011 | EF2 | 25 mi | 17.08 mi | 0 / 0 |
| Aug 18, 2005 | F2 | 20 mi | 20 mi | 0 / 3 |
| Jun 26, 1989 | F2 | 24 mi | 0.3 mi | 0 / 0 |
| May 8, 1988 | F2 | 16 mi | 20 mi | 0 / 0 |
| May 8, 1988 | F2 | 23 mi | 27 mi | 0 / 0 |
| Oct 16, 1984 | F2 | 10 mi | 17 mi | 0 / 3 |
The strongest 12 of 63, by rating and then by deaths. Ratings before February 2007 are on the original Fujita scale.
Hail in Elroy
The Storm Prediction Center has 54 hail reports within 10 miles of Elroy since 1959, made on 32 separate days. Of these, 29 were 1 inch across or larger, and one reached 2 inches. The largest, 2 inches (hen egg size), fell on May 10, 1959. The most recent report is from May 15, 2025. August has the most reports, 17.
Source: NOAA Storm Prediction Center severe weather reports, data through 2025.
Weather by month in Elroy
The nearest NOAA station with 1991–2020 climate normals is Hillsboro, WI, 7 miles south of Elroy at 940 feet. July is the warmest, with an average high of 83°F and low of 60°F; January is the coolest, at 27°F and 7°F. June is the wettest at 5.1 inches of precipitation on average and February the driest at 1.2 inches; the year adds up to 37.3 inches over 69 days with at least a tenth of an inch. Highs reach 90°F on about 6 days a year, almost all from June to August. Lows fall below freezing on about 163 nights a year. Snowfall averages 38.7 inches a year, most of it in January and February. That 37.3 inches is more than at 130 of the 165 Wisconsin stations used on this site (79%). Mauston, 12 miles east, has its own station (Mauston 1 SE, WI): 36.3 inches a year, 1.0 less than here, and a July average high of 82°F against 83°F.
| Month | High °F | Low °F | Precip. in | Days ≥ 0.1" | Snow in |
|---|---|---|---|---|---|
| Jan | 27 | 7 | 1.3 | 4 | 10.0 |
| Feb | 32 | 10 | 1.2 | 3 | 10.0 |
| Mar | 44 | 23 | 2.0 | 5 | 6.4 |
| Apr | 58 | 34 | 3.8 | 7 | 2.1 |
| May | 69 | 46 | 5.0 | 9 | 0.0 |
| Jun | 79 | 56 | 5.1 | 9 | 0.0 |
| Jul | 83 | 60 | 4.1 | 7 | 0.0 |
| Aug | 81 | 58 | 4.2 | 7 | 0.0 |
| Sep | 74 | 49 | 4.1 | 6 | 0.0 |
| Oct | 60 | 37 | 2.8 | 5 | 0.2 |
| Nov | 46 | 27 | 2.1 | 4 | 2.6 |
| Dec | 33 | 15 | 1.6 | 4 | 7.4 |
| Year | 57 | 35 | 37.3 | 69 | 38.7 |
Averages for 1991–2020 at Hillsboro, WI (940 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 Elroy
Since 1996, the National Weather Service has logged 71 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Elroy: 49 thunderstorm wind reports, 7 flash floods, 7 floods, 7 heavy rain events and 1 lightning strike. None is recorded as killing or injuring anyone; the NWS estimated $34.8 million in property and crop damage. The strongest thunderstorm gust on record here was 75 mph, on June 27, 1998. Of the 374 Wisconsin cities on this site with a flash flood on record, 217 have had fewer than Elroy.
August 28, 2018: flash flood 8 miles from the centre of Elroy — $28.7 million damage.
June 8, 2008: flood 6 miles from the centre of Elroy — $1.2 million damage.
June 8, 2008: flood 8 miles from the centre of Elroy — $1.1 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
Flood insurance policyholders in Elroy's ZIP code 53929 have filed 30 claims with the National Flood Insurance Program since 2008, and were paid $2.4 million for buildings and contents, in the dollars of each year. The year with the most claims was 2018, with 19. 30% of the claims carry the name of a storm or flood event; the rest have no event name. Of the 128 Wisconsin cities on this site with 10 or more claims, 69 have fewer than Elroy.
Juneau County, which includes Elroy, has been named in 16 federal disaster or emergency declarations since 1976, 13 of them major disasters (by incident: 7 severe storms, 5 floods, 2 biological emergencies, 1 drought). The latest major disaster declaration was Severe Storms, Tornadoes, and Flooding, on June 30, 2026. FEMA's National Risk Index gives Juneau County a Relatively Low rating for natural hazard risk overall; by hazard: Relatively Moderate for tornadoes, hail, strong wind and heat waves; Relatively Low for inland flooding and lightning; Very Low for hurricanes. It models the county's expected loss from all 18 hazards it covers at $24.3 million a year, the 33rd highest of 72 Wisconsin counties; of the hazards above, the largest share, $11.1 million (46%), 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 Elroy
- Wonewoc, WI8 mi
- Mauston, WI12 mi
- Hillsboro, WI12 mi
- Wilton, WI12 mi
- New Lisbon, WI13 mi
- La Valle, WI14 mi
- Camp Douglas, WI14 mi
- Tomah, WI19 mi
- La Farge, WI19 mi
- Lyndon Station, WI20 mi
- Reedsburg, WI21 mi
- Necedah, WI24 mi
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