NHC HURDAT2 · SPC Tornado Database
Hurricanes and Tornadoes That Hit Andover, 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 Andover, Minnesota since records began in 1851. Since 1950, 89 tornadoes have touched down within 25 miles, 11 of them rated EF3 or stronger.
- Hurricanes
- 0
- Tropical storms
- 0
- Tornadoes
- 89
- EF3 or stronger
- 11
within 75 mi, since 1851
below hurricane strength
within 25 mi, since 1950
20 deaths in all
What the records show for Andover
The highest rating among the 89 tornadoes within 25 miles is F4, reached 5 times; the most recent, on July 3, 1983, came within 3 miles. The deadliest, an F4 on May 6, 1965, killed 6 people. Of the 89, 9 had paths within 5 miles of the city centre, and 44 have come since 2000. July has had the most tornadoes, 31. The most recent tornado was on August 29, 2024. Andover has more tornadoes within 25 miles than 53% of the 341 Minnesota cities on this site. Hail has been reported within 10 miles 205 times since 1967, with stones up to 3 inches (tea cup size). Andover has more hail reports within 10 miles than 84% of the 341 Minnesota cities.
Compare Andover's storm record with another city →
Tornadoes within 25 miles of Andover
By decade
- 2020s6
- 2010s17
- 2000s21(1 EF3+)
- 1990s17
- 1980s10(4 EF3+)
- 1970s4
- 1960s10(3 EF3+)
- 1950s4(3 EF3+)
| Date | Rating | Distance | Path | Killed / injured |
|---|---|---|---|---|
| May 6, 1965 | F4 | 11 mi | 17.3 mi | 6 / 158 |
| May 6, 1965 | F4 | 9 mi | 6.8 mi | 3 / 175 |
| Jun 19, 1951 | F4 | 4 mi | 52.6 mi | 1 / 20 |
| Jul 3, 1983 | F4 | 3 mi | 1 mi | 0 / 4 |
| May 6, 1965 | F4 | 24 mi | 6.9 mi | 0 / 0 |
| Jul 20, 1951 | F3 | 25 mi | 11.6 mi | 5 / 40 |
| May 25, 2008 | EF3 | 13 mi | 5.96 mi | 1 / 17 |
| Apr 26, 1984 | F3 | 12 mi | 5.5 mi | 1 / 52 |
| Jun 14, 1981 | F3 | 22 mi | 16.2 mi | 1 / 83 |
| Jul 23, 1987 | F3 | 10 mi | 5 mi | 0 / 0 |
| May 24, 1958 | F3 | 18 mi | 59.4 mi | 0 / 12 |
| Sep 16, 2006 | F2 | 7 mi | 8 mi | 1 / 0 |
The strongest 12 of 89, by rating and then by deaths. Ratings before February 2007 are on the original Fujita scale.
Hail in Andover
The Storm Prediction Center has 205 hail reports within 10 miles of Andover since 1967, made on 84 separate days. Of these, 126 were 1 inch across or larger, and 17 reached 2 inches. The largest size, 3 inches (tea cup size), was reported on 2 days, most recently August 5, 2019. The most recent report is from August 15, 2025. May has the most reports, 60.
Source: NOAA Storm Prediction Center severe weather reports, data through 2025.
Weather by month in Andover
The nearest NOAA station with 1991–2020 climate normals is Andover 1N, MN, in Andover at 899 feet. July is the warmest, with an average high of 82°F and low of 60°F; January is the coolest, at 22°F and 2°F. July is the wettest at 4.5 inches of precipitation on average and January the driest at 0.6 inches; the year adds up to 28.8 inches over 59 days with at least a tenth of an inch. Highs reach 90°F on about 10 days a year, almost all from May to September. Lows fall below freezing on about 172 nights a year. Snowfall averages 44.1 inches a year, most of it in December. That 28.8 inches is more than at 37 of the 124 Minnesota stations used on this site (30%). East Bethel, 6 miles north, has its own station (Cedar, MN): 34.4 inches a year, 5.6 more than here, and a July average high of 80°F against 82°F.
| Month | High °F | Low °F | Precip. in | Days ≥ 0.1" | Snow in |
|---|---|---|---|---|---|
| Jan | 22 | 2 | 0.6 | 2 | 5.1 |
| Feb | 28 | 7 | 0.8 | 3 | 9.6 |
| Mar | 41 | 19 | 1.4 | 4 | 6.3 |
| Apr | 56 | 32 | 2.9 | 6 | 5.7 |
| May | 68 | 45 | 3.6 | 7 | 0.0 |
| Jun | 78 | 55 | 3.8 | 7 | 0.0 |
| Jul | 82 | 60 | 4.5 | 7 | 0.0 |
| Aug | 80 | 57 | 3.6 | 7 | 0.0 |
| Sep | 72 | 48 | 2.5 | 5 | 0.0 |
| Oct | 58 | 36 | 2.7 | 5 | 0.7 |
| Nov | 41 | 23 | 1.4 | 3 | 4.3 |
| Dec | 27 | 11 | 1.0 | 4 | 12.4 |
| Year | 54 | 33 | 28.8 | 59 | 44.1 |
Averages for 1991–2020 at Andover 1N, MN (899 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 Andover
Since 1996, the National Weather Service has logged 196 flood, rain, thunderstorm wind and lightning events that began within 10 miles of Andover: 159 thunderstorm wind reports, 18 heavy rain events, 13 flash floods, 5 lightning strikes and 1 flood. They killed 0 people and injured 10, and the NWS estimated $3.2 million in property and crop damage. The strongest thunderstorm gust on record here was 98 mph, on July 1, 1997. September has had the most flash floods, 6 of 13. Of the 312 Minnesota cities on this site with a flash flood on record, 247 have had fewer than Andover.
July 1, 2011: thunderstorm wind 5 miles from the centre of Andover — 6 injured, $500,000 damage.
NWS: “A large area of eastern Anoka County received damage from severe straight line winds that moved from west to east across the area between 1850 to 1900 CST. Damage includes power lines, railroad crossing gates, personal property and trees.”
September 21, 2005: lightning strike 6 miles from the centre of Andover — 2 injured.
August 6, 1996: thunderstorm wind 10 miles from the centre of Andover — 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
Flood insurance policyholders in Andover's ZIP code 55304 have filed 10 claims with the National Flood Insurance Program since 1980, and were paid $65,000 for buildings and contents, in the dollars of each year. 20% of the claims carry the name of a storm or flood event; the rest have no event name. Of the 120 Minnesota cities on this site with 10 or more claims, 0 have fewer than Andover.
Anoka County, which includes Andover, has been named in 13 federal disaster or emergency declarations since 1965, 9 of them major disasters (by incident: 4 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 Anoka County a Relatively Moderate rating for natural hazard risk overall; by hazard: Very High for strong wind; Relatively High for hail and lightning; Relatively Moderate for tornadoes, inland flooding and heat waves. It models the county's expected loss from all 18 hazards it covers at $127.5 million a year, the 4th highest of 87 Minnesota counties; of the hazards above, the largest share, $85.4 million (67%), 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.