NHC HURDAT2 · SPC Tornado Database
Hurricanes and Tornadoes That Hit Stewartville, MN
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 Stewartville, Minnesota since records began in 1851. Since 1950, 94 tornadoes have touched down within 25 miles, 3 of them rated EF3 or stronger.
- Hurricanes
- 0
- Tropical storms
- 0
- Tornadoes
- 94
- EF3 or stronger
- 3
within 75 mi, since 1851
below hurricane strength
within 25 mi, since 1950
2 deaths in all
What the records show for Stewartville
The highest rating among the 94 tornadoes within 25 miles is F4, reached 2 times; the most recent, on September 16, 1962, came within 8 miles. The deadliest, an F4 on May 10, 1953, killed 2 people. Of the 94, 6 had paths within 5 miles of the city centre, and 36 have come since 2000. June has had the most tornadoes, 32. The most recent tornado was on August 5, 2024. Stewartville has more tornadoes within 25 miles than 58% of the 341 Minnesota cities on this site. Hail has been reported within 10 miles 115 times since 1959, with stones up to 2.75 inches (baseball size). Stewartville has more hail reports within 10 miles than 64% of the 341 Minnesota cities.
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Tornadoes within 25 miles of Stewartville
By decade
- 2020s11
- 2010s15
- 2000s10(1 EF3+)
- 1990s14
- 1980s10
- 1970s11
- 1960s19(1 EF3+)
- 1950s4(1 EF3+)
| Date | Rating | Distance | Path | Killed / injured |
|---|---|---|---|---|
| May 10, 1953 | F4 | 20 mi | 162 mi | 2 / 24 |
| Sep 16, 1962 | F4 | 8 mi | 0.5 mi | 0 / 34 |
| Jun 11, 2004 | F3 | 22 mi | 12 mi | 0 / 0 |
| Apr 12, 2022 | EF2 | 20 mi | 3.93 mi | 0 / 2 |
| Jun 17, 2010 | EF2 | 24 mi | 6.61 mi | 0 / 1 |
| Jul 27, 1995 | F2 | 20 mi | 3.5 mi | 0 / 0 |
| Jun 7, 1984 | F2 | 25 mi | 5 mi | 0 / 7 |
| May 17, 1982 | F2 | 13 mi | 4 mi | 0 / 0 |
| May 17, 1982 | F2 | 22 mi | 26 mi | 0 / 3 |
| Apr 29, 1981 | F2 | 24 mi | 0.1 mi | 0 / 2 |
| Jul 3, 1979 | F2 | 8 mi | 0.5 mi | 0 / 0 |
| Jul 14, 1977 | F2 | 16 mi | 9.2 mi | 0 / 10 |
The strongest 12 of 94, by rating and then by deaths. Ratings before February 2007 are on the original Fujita scale.
Hail in Stewartville
The Storm Prediction Center has 115 hail reports within 10 miles of Stewartville since 1959, made on 78 separate days. Of these, 67 were 1 inch across or larger, and 4 reached 2 inches. The largest size, 2.75 inches (baseball size), was reported on 2 days, most recently July 30, 1994. The most recent report is from August 27, 2025. May has the most reports, 37.
Source: NOAA Storm Prediction Center severe weather reports, data through 2025.
Weather by month in Stewartville
The nearest NOAA station with 1991–2020 climate normals is Rochester International Airport, MN, 3 miles north of Stewartville at 1,304 feet. July is the warmest, with an average high of 80°F and low of 61°F; January is the coolest, at 23°F and 7°F. June is the wettest at 5.4 inches of precipitation on average and January and February the driest at 1.0 inches; the year adds up to 34.7 inches over 65 days with at least a tenth of an inch. Highs reach 90°F on about 5 days a year, almost all from June to July. Lows fall below freezing on about 156 nights a year. Snowfall averages 53.1 inches a year, most of it in December. That 34.7 inches is more than at 106 of the 124 Minnesota stations used on this site (85%). Byron, 13 miles northwest, has its own station (Byron 4north, MN): 35.9 inches a year, 1.2 more than here, and a July average high of 81°F against 80°F.
| Month | High °F | Low °F | Precip. in | Days ≥ 0.1" | Snow in |
|---|---|---|---|---|---|
| Jan | 23 | 7 | 1.0 | 3 | 12.2 |
| Feb | 27 | 11 | 1.0 | 3 | 10.7 |
| Mar | 40 | 23 | 2.0 | 5 | 8.6 |
| Apr | 55 | 35 | 3.5 | 7 | 3.3 |
| May | 68 | 47 | 4.4 | 8 | 0.5 |
| Jun | 78 | 58 | 5.4 | 8 | 0.0 |
| Jul | 80 | 61 | 4.2 | 7 | 0.0 |
| Aug | 78 | 58 | 4.1 | 6 | 0.0 |
| Sep | 72 | 50 | 3.6 | 6 | 0.0 |
| Oct | 58 | 38 | 2.4 | 5 | 0.9 |
| Nov | 42 | 26 | 1.8 | 4 | 4.5 |
| Dec | 28 | 14 | 1.3 | 4 | 12.4 |
| Year | 54 | 36 | 34.7 | 65 | 53.1 |
Averages for 1991–2020 at Rochester International Airport, MN (1,304 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 Stewartville
Since 1996, the National Weather Service has logged 112 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Stewartville: 91 thunderstorm wind reports, 8 lightning strikes, 5 floods, 4 flash floods and 4 heavy rain events. None is recorded as killing or injuring anyone; the NWS estimated $5.1 million in property and crop damage. The strongest thunderstorm gust on record here was 81 mph, on May 19, 1996.
September 23, 2010: flood 9 miles from the centre of Stewartville — $3.5 million damage.
September 4, 2012: thunderstorm wind 10 miles from the centre of Stewartville — $500,000 damage.
June 9, 2018: flash flood 7 miles from the centre of Stewartville — $210,000 damage.
NWS: “Numerous rural roads were washed out or under water across the western and southern portions of Fillmore County and near Harmony. This included State Highway 16 east of Spring Valley.”
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
Olmsted County, which includes Stewartville, has been named in 15 federal disaster or emergency declarations since 1965, 12 of them major disasters (by incident: 4 floods, 4 severe storms, 2 biological emergencies, 2 tornadoes). The latest major disaster declaration was Covid-19 Pandemic, on April 7, 2020. FEMA's National Risk Index gives Olmsted County a Relatively Moderate rating for natural hazard risk overall; by hazard: Relatively Moderate for tornadoes, hail, inland flooding and strong wind; Relatively Low for lightning and heat waves. It models the county's expected loss from all 18 hazards it covers at $93.6 million a year, the 6th highest of 87 Minnesota counties; of the hazards above, the largest share, $55.8 million (60%), 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 Stewartville
- Rochester, MN11 mi
- Byron, MN13 mi
- Spring Valley, MN14 mi
- Hayfield, MN16 mi
- Eyota, MN16 mi
- Chatfield, MN17 mi
- Kasson, MN17 mi
- Mantorville, MN19 mi
- Oronoco, MN20 mi
- Dodge Center, MN22 mi
- Elgin, MN22 mi
- Saint Charles, MN23 mi
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