NHC HURDAT2 · SPC Tornado Database
Hurricanes and Tornadoes That Hit Casco, 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 Casco, Wisconsin since records began in 1851. Since 1950, 36 tornadoes have touched down within 25 miles, 1 of them rated EF3 or stronger.
- Hurricanes
- 0
- Tropical storms
- 0
- Tornadoes
- 36
- EF3 or stronger
- 1
within 75 mi, since 1851
below hurricane strength
within 25 mi, since 1950
no recorded deaths
What the records show for Casco
The strongest of the 36 tornadoes within 25 miles was an F4 on July 5, 1994; its path came within 20 miles. Of the 36, 3 had paths within 5 miles of the city centre, and 8 have come since 2000. July has had the most tornadoes, 9. The most recent tornado was on August 7, 2019. Of the 416 Wisconsin cities on this site, 89% have more tornadoes within 25 miles than Casco. Hail has been reported within 10 miles 34 times since 1959, with stones up to 2.5 inches (tennis ball size). Of the 416 Wisconsin cities, 76% have more hail reports within 10 miles than Casco.
Compare Casco's storm record with another city →
Tornadoes within 25 miles of Casco
By decade
- 2010s5
- 2000s3
- 1990s6(1 EF3+)
- 1980s3
- 1970s12
- 1960s3
- 1950s4
| Date | Rating | Distance | Path | Killed / injured |
|---|---|---|---|---|
| Jul 5, 1994 | F4 | 20 mi | 3.5 mi | 0 / 2 |
| Jul 5, 1994 | F2 | 22 mi | 1 mi | 0 / 0 |
| Jun 8, 1985 | F2 | 16 mi | 5 mi | 0 / 0 |
| Apr 22, 1970 | F2 | 9 mi | 9.5 mi | 0 / 1 |
| Apr 22, 1970 | F2 | in town | 11.2 mi | 0 / 2 |
| Apr 22, 1970 | F2 | 17 mi | 7.2 mi | 0 / 1 |
| Apr 22, 1970 | F2 | 20 mi | 3.6 mi | 0 / 2 |
| May 10, 1959 | F2 | 18 mi | 4.3 mi | 0 / 3 |
| Jul 1, 1956 | F2 | 15 mi | 10.6 mi | 0 / 0 |
| Aug 6, 2013 | EF1 | 13 mi | 10.59 mi | 0 / 0 |
| Aug 6, 2013 | EF1 | 21 mi | 33.1 mi | 0 / 0 |
| May 30, 1980 | F1 | 24 mi | 1 mi | 0 / 0 |
The strongest 12 of 36, by rating and then by deaths. Ratings before February 2007 are on the original Fujita scale.
Hail in Casco
The Storm Prediction Center has 34 hail reports within 10 miles of Casco since 1959, made on 23 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 17, 1992. The most recent report is from April 7, 2020. July has the most reports, 10.
Source: NOAA Storm Prediction Center severe weather reports, data through 2025.
Weather by month in Casco
The nearest NOAA station with 1991–2020 climate normals is Kewaunee, WI, 11 miles southeast of Casco at 593 feet. July is the warmest, with an average high of 76°F and low of 60°F; January is the coolest, at 26°F and 12°F. June is the wettest at 3.8 inches of precipitation on average and February the driest at 1.1 inches; the year adds up to 31.2 inches over 68 days with at least a tenth of an inch. Highs reach 90°F on about 2 days a year, almost all from July. Lows fall below freezing on about 145 nights a year. Snowfall averages 48.1 inches a year, most of it in January. That 31.2 inches is more than at 12 of the 165 Wisconsin stations used on this site (7%). Algoma, 8 miles east, has its own station (Forestville-4E, WI): 30.2 inches a year, 1.0 less than here, and a July average high of 77°F against 76°F.
| Month | High °F | Low °F | Precip. in | Days ≥ 0.1" | Snow in |
|---|---|---|---|---|---|
| Jan | 26 | 12 | 1.5 | 4 | 13.5 |
| Feb | 29 | 14 | 1.1 | 4 | 12.6 |
| Mar | 38 | 23 | 1.7 | 5 | 6.2 |
| Apr | 48 | 34 | 3.0 | 6 | 2.4 |
| May | 60 | 44 | 3.3 | 8 | 0.0 |
| Jun | 70 | 54 | 3.8 | 7 | 0.0 |
| Jul | 76 | 60 | 3.6 | 7 | 0.0 |
| Aug | 75 | 60 | 3.4 | 6 | 0.0 |
| Sep | 68 | 52 | 3.1 | 6 | 0.0 |
| Oct | 55 | 41 | 2.9 | 6 | 0.2 |
| Nov | 43 | 30 | 2.2 | 5 | 2.2 |
| Dec | 32 | 19 | 1.6 | 5 | 11.0 |
| Year | 52 | 37 | 31.2 | 68 | 48.1 |
Averages for 1991–2020 at Kewaunee, WI (593 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 Casco
Since 1996, the National Weather Service has logged 41 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Casco: 36 thunderstorm wind reports, 2 heavy rain events, 1 flash flood, 1 flood and 1 lightning strike. They killed 1 person and injured 0, and the NWS estimated $192,000 in property and crop damage. The strongest thunderstorm gust on record here was 69 mph, on June 6, 1999.
March 2, 2008: heavy rain event 10 miles from the centre of Casco — 1 killed.
August 9, 2025: lightning strike 5 miles from the centre of Casco — $125,000 damage.
NWS: “A house was struck by lightning and started on fire. The fire produced around $125,000 worth of 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
Kewaunee County, which includes Casco, has been named in 8 federal disaster or emergency declarations since 1973, 4 of them major disasters (by incident: 2 biological emergencies, 2 floods, 1 drought, 1 hurricane). The latest major disaster declaration was Severe Storms, Tornadoes, and Flooding, on June 30, 2026. FEMA's National Risk Index gives Kewaunee County a Very Low rating for natural hazard risk overall; by hazard: Relatively Low for tornadoes, hail, strong wind and lightning; Very Low for hurricanes, inland flooding, coastal flooding and heat waves. It models the county's expected loss from all 18 hazards it covers at $8.5 million a year, the 68th highest of 72 Wisconsin counties; of the hazards above, the largest share, $3.7 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.