NHC HURDAT2 · SPC Tornado Database
Hurricanes and Tornadoes That Hit Mahtomedi, 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 Mahtomedi, Minnesota since records began in 1851. Since 1950, 101 tornadoes have touched down within 25 miles, 10 of them rated EF3 or stronger.
- Hurricanes
- 0
- Tropical storms
- 0
- Tornadoes
- 101
- EF3 or stronger
- 10
within 75 mi, since 1851
below hurricane strength
within 25 mi, since 1950
23 deaths in all
What the records show for Mahtomedi
The highest rating among the 101 tornadoes within 25 miles is F4, reached 4 times; the most recent, on July 3, 1983, came within 21 miles. The deadliest, an F4 on May 6, 1965, killed 6 people. Of the 101, 3 had paths within 5 miles of the city centre, and 54 have come since 2000. July has had the most tornadoes, 34. The most recent tornado was on May 15, 2025. Mahtomedi has more tornadoes within 25 miles than 69% of the 341 Minnesota cities on this site. Hail has been reported within 10 miles 208 times since 1962, with stones up to 3 inches (tea cup size). Mahtomedi has more hail reports within 10 miles than 84% of the 341 Minnesota cities.
Compare Mahtomedi's storm record with another city →
Tornadoes within 25 miles of Mahtomedi
By decade
- 2020s14
- 2010s19
- 2000s21(1 EF3+)
- 1990s13
- 1980s9(4 EF3+)
- 1970s6
- 1960s10(2 EF3+)
- 1950s9(3 EF3+)
| Date | Rating | Distance | Path | Killed / injured |
|---|---|---|---|---|
| May 6, 1965 | F4 | 10 mi | 17.3 mi | 6 / 158 |
| May 6, 1965 | F4 | 14 mi | 6.8 mi | 3 / 175 |
| Jun 19, 1951 | F4 | 22 mi | 52.6 mi | 1 / 20 |
| Jul 3, 1983 | F4 | 21 mi | 1 mi | 0 / 4 |
| Jul 20, 1951 | F3 | 20 mi | 11.6 mi | 5 / 40 |
| May 25, 2008 | EF3 | 8 mi | 5.96 mi | 1 / 17 |
| Apr 26, 1984 | F3 | 12 mi | 5.5 mi | 1 / 52 |
| Jun 14, 1981 | F3 | 5 mi | 16.2 mi | 1 / 83 |
| Jul 23, 1987 | F3 | 19 mi | 5 mi | 0 / 0 |
| May 24, 1958 | F3 | 5 mi | 59.4 mi | 0 / 12 |
| May 10, 1953 | F2 | 19 mi | 105.7 mi | 4 / 27 |
| May 15, 2025 | EF2 | 23 mi | 3.94 mi | 0 / 0 |
The strongest 12 of 101, by rating and then by deaths. Ratings before February 2007 are on the original Fujita scale.
Hail in Mahtomedi
The Storm Prediction Center has 208 hail reports within 10 miles of Mahtomedi since 1962, made on 79 separate days. Of these, 142 were 1 inch across or larger, and 14 reached 2 inches. The largest, 3 inches (tea cup size), fell on July 26, 2019. The most recent report is from September 21, 2025. May has the most reports, 78.
Source: NOAA Storm Prediction Center severe weather reports, data through 2025.
Weather by month in Mahtomedi
The nearest NOAA station with 1991–2020 climate normals is Vadnais Lake, MN, 7 miles west of Mahtomedi at 890 feet. July is the warmest, with an average high of 83°F and low of 64°F; January is the coolest, at 25°F and 8°F. Highs reach 90°F on about 12 days a year, almost all from June to August. Lows fall below freezing on about 157 nights a year. That 33.1 inches is more than at 90 of the 124 Minnesota stations used on this site (73%). Lake Elmo, 5 miles southeast, has its own station (Stillwater 1 SE, MN): 35.2 inches a year, 2.1 more than here, and a July average high of 85°F against 83°F.
| Month | High °F | Low °F | Precip. in | Days ≥ 0.1" |
|---|---|---|---|---|
| Jan | 25 | 8 | 0.8 | 2 |
| Feb | 30 | 11 | 0.8 | 2 |
| Mar | 42 | 24 | 1.5 | 4 |
| Apr | 57 | 37 | 3.1 | 6 |
| May | 69 | 50 | 4.3 | 8 |
| Jun | 79 | 60 | 4.5 | 8 |
| Jul | 83 | 64 | 4.5 | 7 |
| Aug | 81 | 62 | 4.5 | 6 |
| Sep | 73 | 54 | 3.1 | 5 |
| Oct | 59 | 42 | 3.1 | 5 |
| Nov | 43 | 28 | 1.8 | 3 |
| Dec | 30 | 16 | 1.1 | 3 |
| Year | 56 | 38 | 33.1 | 61 |
Averages for 1991–2020 at Vadnais Lake, MN (890 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 Mahtomedi
Since 1996, the National Weather Service has logged 143 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Mahtomedi: 118 thunderstorm wind reports, 10 flash floods, 9 heavy rain events and 6 lightning strikes. They killed 2 people and injured 1, and the NWS estimated $5.6 million in property and crop damage. The strongest thunderstorm gust on record here was 92 mph, on June 26, 1998. June has had the most flash floods, 3 of 10. Of the 312 Minnesota cities on this site with a flash flood on record, 223 have had fewer than Mahtomedi.
September 20, 2007: flash flood 10 miles from the centre of Mahtomedi — 1 killed, $200,000 damage.
July 21, 2009: lightning strike 7 miles from the centre of Mahtomedi — 1 killed.
August 5, 2021: lightning strike 9 miles from the centre of Mahtomedi — 1 injured.
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
Washington County, which includes Mahtomedi, has been named in 17 federal disaster or emergency declarations since 1965, 12 of them major disasters (by incident: 8 floods, 3 severe storms, 2 biological emergencies, 1 drought). The latest major disaster declaration was Covid-19 Pandemic, on April 7, 2020. FEMA's National Risk Index gives Washington County a Relatively Moderate rating for natural hazard risk overall; by hazard: Very High for strong wind; Relatively High for tornadoes, hail and lightning; Relatively Moderate for inland flooding and heat waves. It models the county's expected loss from all 18 hazards it covers at $92.7 million a year, the 7th highest of 87 Minnesota counties; of the hazards above, the largest share, $41.5 million (45%), 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.