NHC HURDAT2 · SPC Tornado Database
Hurricanes and Tornadoes That Hit Lone Rock, 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
1 tropical system has passed within 75 miles of Lone Rock, Wisconsin since 1851, 0 of them at hurricane strength; the most recent was an unnamed storm in 1900. Since 1950, 54 tornadoes have touched down within 25 miles, 4 of them rated EF3 or stronger.
- Hurricanes
- 0
- Tropical storms
- 1
- Tornadoes
- 54
- EF3 or stronger
- 4
within 75 mi, since 1851
below hurricane strength
within 25 mi, since 1950
9 deaths in all
What the records show for Lone Rock
None of the 1 tropical systems was at hurricane strength as it passed Lone Rock; the strongest was an unnamed storm in 1900, a tropical storm with 54 mph winds when its centre passed 70 miles away. Lone Rock is tied for the most tropical storms and hurricanes within 75 miles among the 416 Wisconsin cities on this site. The strongest of the 54 tornadoes within 25 miles was an F5 on June 7, 1984; its path came within 21 miles, and it killed 9 people. Of the 54, 3 had paths within 5 miles of the city centre, and 27 have come since 2000. June has had the most tornadoes, 18. The most recent tornado was on July 16, 2025. Of the 416 Wisconsin cities, 77% have more tornadoes within 25 miles than Lone Rock. Hail has been reported within 10 miles 39 times since 1955, with stones up to 2.5 inches (tennis ball size). Of the 416 Wisconsin cities, 71% have more hail reports within 10 miles than Lone Rock.
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Tropical storms and hurricanes near Lone Rock
| Year | Storm | Closest | Strength when closest | Peak |
|---|---|---|---|---|
| 1900 | Unnamed 1900 stormSep 11 | 70 mi | Tropical storm (54 mph) | Category 4 |
Strength is the sustained wind on the track at the closest point, which is not the wind felt in Lone Rock: a hurricane's worst winds sit within a few dozen miles of its centre, and inland cities are usually past that.
Tornadoes within 25 miles of Lone Rock
By decade
- 2020s8(1 EF3+)
- 2010s6
- 2000s13
- 1990s1
- 1980s9(2 EF3+)
- 1970s3
- 1960s9(1 EF3+)
- 1950s5
| Date | Rating | Distance | Path | Killed / injured |
|---|---|---|---|---|
| Jun 7, 1984 | F5 | 21 mi | 36 mi | 9 / 200 |
| Jul 3, 1983 | F4 | 18 mi | 0.5 mi | 0 / 0 |
| Aug 7, 2021 | EF3 | 18 mi | 9.38 mi | 0 / 0 |
| Sep 3, 1964 | F3 | 7 mi | 17.1 mi | 0 / 4 |
| Jun 29, 2014 | EF2 | 16 mi | 5.05 mi | 0 / 0 |
| Jun 29, 2014 | EF2 | 12 mi | 29.07 mi | 0 / 0 |
| Aug 18, 2005 | F2 | 20 mi | 14.5 mi | 0 / 0 |
| Aug 18, 2005 | F2 | 19 mi | 20 mi | 0 / 3 |
| Jun 26, 1989 | F2 | 15 mi | 0.3 mi | 0 / 0 |
| May 8, 1988 | F2 | 11 mi | 20 mi | 0 / 0 |
| May 8, 1988 | F2 | 20 mi | 7.5 mi | 0 / 0 |
| May 30, 1985 | F2 | 16 mi | 16 mi | 0 / 0 |
The strongest 12 of 54, by rating and then by deaths. Ratings before February 2007 are on the original Fujita scale.
Hail in Lone Rock
The Storm Prediction Center has 39 hail reports within 10 miles of Lone Rock since 1955, made on 27 separate days. Of these, 24 were 1 inch across or larger, and one reached 2 inches. The largest, 2.5 inches (tennis ball size), fell on June 8, 2011. The most recent report is from May 15, 2025. May has the most reports, 12.
Source: NOAA Storm Prediction Center severe weather reports, data through 2025.
Weather by month in Lone Rock
The nearest NOAA station with 1991–2020 climate normals is Lone Rock Tri Co Airport, WI, 3 miles east of Lone Rock at 717 feet. July is the warmest, with an average high of 83°F and low of 61°F; January is the coolest, at 28°F and 10°F. June is the wettest at 5.3 inches of precipitation on average and January and February the driest at 0.9 inches; the year adds up to 34.2 inches over 63 days with at least a tenth of an inch. Highs reach 90°F on about 12 days a year, almost all from June to September. Lows fall below freezing on about 151 nights a year. That 34.2 inches is more than at 75 of the 165 Wisconsin stations used on this site (45%). Muscoda, 11 miles west, has its own station (Richland Ctr, WI): 39.5 inches a year, 5.3 more than here, and a July average high of 82°F against 83°F.
| Month | High °F | Low °F | Precip. in | Days ≥ 0.1" |
|---|---|---|---|---|
| Jan | 28 | 10 | 0.9 | 3 |
| Feb | 32 | 14 | 0.9 | 3 |
| Mar | 45 | 26 | 1.9 | 5 |
| Apr | 58 | 36 | 3.7 | 7 |
| May | 70 | 48 | 3.7 | 8 |
| Jun | 79 | 58 | 5.3 | 8 |
| Jul | 83 | 61 | 4.5 | 6 |
| Aug | 81 | 59 | 4.2 | 6 |
| Sep | 74 | 51 | 3.4 | 6 |
| Oct | 61 | 39 | 2.5 | 5 |
| Nov | 46 | 28 | 2.0 | 4 |
| Dec | 33 | 17 | 1.2 | 4 |
| Year | 57 | 37 | 34.2 | 63 |
Averages for 1991–2020 at Lone Rock Tri Co Airport, WI (717 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 Lone Rock
Since 1996, the National Weather Service has logged 79 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Lone Rock: 62 thunderstorm wind reports, 11 floods, 3 flash floods, 2 heavy rain events and 1 lightning strike. None is recorded as killing or injuring anyone; the NWS estimated $2.6 million in property and crop damage. The strongest thunderstorm gust on record here was 77 mph, on July 28, 2023.
June 8, 2008: flood 10 miles from the centre of Lone Rock — $1.1 million damage.
July 21, 2017: heavy rain event 10 miles from the centre of Lone Rock — $660,000 damage.
June 22, 2013: flash flood 4 miles from the centre of Lone Rock — $291,000 damage.
NWS: “Heavy rain produced flash flooding across the southwest half of Richland County. Numerous streams were forced out of their banks with water reported over County Highway JJ between Gotham and Lone Rock, State Highway 56 near Gillingham and the intersection of County Highways O and OO near Richland Center.”
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
Richland County, which includes Lone Rock, has been named in 19 federal disaster or emergency declarations since 1965, 16 of them major disasters (by incident: 10 severe storms, 4 floods, 2 biological emergencies, 1 drought). The latest major disaster declaration was Covid-19 Pandemic, on April 4, 2020. FEMA's National Risk Index gives Richland County a Relatively Low rating for natural hazard risk overall; by hazard: Relatively Moderate for hail; Relatively Low for tornadoes, inland flooding, strong wind and heat waves; Very Low for hurricanes and lightning. It models the county's expected loss from all 18 hazards it covers at $13.4 million a year, the 56th highest of 72 Wisconsin counties; of the hazards above, the largest share, $7.9 million (59%), 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 Lone Rock
- Spring Green, WI9 mi
- Muscoda, WI11 mi
- Richland Center, WI13 mi
- Dodgeville, WI17 mi
- Barneveld, WI22 mi
- Mazomanie, WI23 mi
- North Freedom, WI23 mi
- Boscobel, WI24 mi
- Sauk City, WI24 mi
- Mineral Point, WI25 mi
- Fennimore, WI25 mi
- Reedsburg, WI25 mi
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