National Weather ServiceMinnesotaFlash Flood WarningArchive to October 1, 2026
Flash Flood Warnings in Minnesota
The National Weather Service issued 46 flash flood warnings for Minnesota in 2025 and 36 a year on average in 2008-2025; in 2021-2025 it had the 36th most of any state. 2026 through September: 30, 16% below the average of 36 for those months in 2008-2025. Hennepin was covered most often (42 times since 2008).
How many flash flood warnings does Minnesota get?
Every flash flood warning that covered part of Minnesota. 2026 is an outline: the year is not over.
The numbers
| Year | Count |
|---|---|
| 2026 (through September) | 30 |
| 2025 | 46 |
| 2024 | 33 |
| 2023 | 10 |
| 2022 | 30 |
| 2021 | 10 |
| 2020 | 35 |
| 2019 | 48 |
| 2018 | 44 |
| 2017 | 18 |
| 2016 | 65 |
| 2015 | 17 |
| 2014 | 54 |
| 2013 | 46 |
| 2012 | 31 |
| 2011 | 53 |
| 2010 | 68 |
| 2009 | 18 |
| 2008 | 22 |
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
When in the year does Minnesota get them?
Sum of 2008-2025; the busiest month is labelled.
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
Where in Minnesota?
| County or forecast zone | Since 2008 | Since 2023 | Last issued |
|---|---|---|---|
| Hennepin | 42 | 5 | August 15, 2025 |
| St. Louis | 40 | 11 | July 23, 2025 |
| Nobles | 37 | 3 | September 6, 2026 |
| Rock | 36 | 4 | July 24, 2025 |
| Mower | 35 | 6 | September 19, 2026 |
| Dakota | 34 | 3 | August 15, 2025 |
| Murray | 34 | 4 | August 17, 2025 |
| Pine | 33 | 3 | July 28, 2023 |
| Fillmore | 32 | 7 | September 19, 2026 |
| Houston | 32 | 6 | September 19, 2026 |
| Pipestone | 32 | 2 | June 22, 2024 |
| Blue Earth | 30 | 8 | September 19, 2026 |
The NWS issues these products for counties or forecast zones; a zone can be part of a county or a mountain range.
Source: Iowa Environmental Mesonet archive of National Weather Service watches, warnings and advisories (VTEC); National Weather Service. Data as of October 1, 2026.
The latest flash flood warnings for Minnesota in AreaZine's record
NWS Grand ForksWarningSeptember 28, 2026
Flash Flood Warning: Clay and Cass, MN and ND
Expired 10:15 p.m. CDT, September 28, 2026
NWS Twin Cities/ChanhassenWarningSeptember 19, 2026
Flash Flood Warning: Faribault, Freeborn, Steele and 1 more, MN
Expired 5:00 a.m. CDT, September 19, 2026
NWS La CrosseWarningSeptember 18, 2026
Flash Flood Warning: Fillmore, MN
Expired 3:45 a.m. CDT, September 19, 2026
NWS La CrosseWarningSeptember 18, 2026
Flash Flood Warning: Houston, MN
Expired 3:00 a.m. CDT, September 19, 2026
NWS Twin Cities/ChanhassenWarningSeptember 18, 2026
Flash Flood Warning: Blue Earth, Faribault, Freeborn and 2 more, MN
Expired 1:00 a.m. CDT, September 19, 2026
NWS La CrosseWarningSeptember 18, 2026
Flash Flood Warning: Fillmore and Mower, MN
Expired 1:00 a.m. CDT, September 19, 2026
NWS Grand ForksWarningSeptember 7, 2026
Flash Flood Warning: Kittson, MN
Expired 11:00 p.m. CDT, September 7, 2026
NWS Grand ForksWarningSeptember 6, 2026
Flash Flood Warning: Kittson, MN
Expired 1:00 a.m. CDT, September 7, 2026
This list is AreaZine's record of the NWS alert feed, kept since April 6, 2026; the counts above come from the complete IEM archive.
Source: National Weather Service alerts (api.weather.gov).
What is a flash flood warning?
A flash flood warning means flash flooding is happening or about to happen: water rising fast in streams, streets or dry washes, usually within six hours of heavy rain or a dam or levee failure. A warning means the hazard is happening, about to happen, or very likely: act now to protect people and property. The national record · Every warning type in Minnesota.