Brown County weather alerts
There are no active weather alerts for Brown County, WI right now.
Since 2016 the National Weather Service has issued about 637 alerts that included Brown County, roughly 64 a year. The most common is the winter weather advisory (119 from 2016 to 2025). The last tornado warning was issued on August 9, 2025. 31 tornadoes have touched down in the county since 1950.
Updated from the National Weather Service · lists refresh hourly; the live map loads current alerts directly from the NWS
No warnings, watches or advisories include Brown County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Manitowoc County, Calumet County, Outagamie County, Kewaunee County.
Brown County alert history
Alert events that included Brown County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Winter Weather Advisory | 119 | 9 | April 2, 2026 |
| Severe Thunderstorm Warning | 104 | 19 | September 2, 2026 |
| Dense Fog Advisory | 55 | 9 | October 23, 2026 |
| Flood Advisory | 54 | 15 | September 15, 2026 |
| Wind Advisory | 42 | 1 | March 13, 2026 |
| Cold Weather Advisory | 41 | 3 | January 26, 2026 |
| Severe Thunderstorm Watch | 34 | 8 | July 27, 2026 |
| Winter Storm Warning | 29 | 1 | March 15, 2026 |
| Frost Advisory | 28 | 5 | May 8, 2026 |
| Winter Storm Watch | 26 | 1 | March 15, 2026 |
| Flood Watch | 22 | 5 | July 2, 2026 |
| Flood Warning | 17 | 8 | April 15, 2026 |
| Freeze Warning | 15 | 3 | October 17, 2026 |
| Heat Advisory | 13 | 2 | July 13, 2026 |
| Tornado Watch | 10 | 2 | July 20, 2026 |
| Tornado Warning | 7 | 0 | August 9, 2025 |
| Flash Flood Warning | 7 | 6 | July 8, 2026 |
| Blizzard Warning | 3 | 1 | March 15, 2026 |
| High Wind Warning | 3 | 0 | November 5, 2022 |
| Snow Squall Warning | 3 | 0 | December 4, 2024 |
| Extreme Cold Warning | 2 | 1 | January 23, 2026 |
| Extreme Heat Warning | 1 | 1 | June 29, 2026 |
| Freeze Watch | 1 | 1 | October 17, 2026 |
| High Wind Watch | 1 | 0 | December 16, 2021 |
| Extreme Cold Watch | 0 | 1 | January 23, 2026 |
| Extreme Heat Watch | 0 | 1 | June 29, 2026 |
Tornado history in Brown County
31 tornadoes have been recorded in Brown County since 1950, injuring 8 people. That ranks 21 of 72 counties in Wisconsin. The most recent was on August 11, 2021 (rated EF0).
Strongest tornadoes in Brown County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| June 26, 1969 | F3 | Outagamie County | 15.3 mi | 100 yd | 0 | 1 |
| April 22, 1970 | F2 | Brown County | 7.2 mi | 800 yd | 0 | 1 |
| May 10, 1959 | F2 | Brown County | 4.3 mi | 33 yd | 0 | 3 |
| April 22, 1970 | F2 | Brown County | 3.6 mi | 800 yd | 0 | 2 |
| August 16, 1968 | F2 | Brown County | 1 mi | 100 yd | 0 | 1 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| August 11, 2021 | EF0 | Brown County | 2.3 mi | 75 yd | 0 | 0 |
| August 7, 2019 | EF0 | Brown County | 6.2 mi | 90 yd | 0 | 0 |
| June 14, 2017 | EF0 | Brown County | 1.2 mi | 50 yd | 0 | 0 |
| June 15, 2015 | EF0 | Brown County | 0.4 mi | 25 yd | 0 | 0 |
| August 6, 2013 | EF1 | Brown County | 10.6 mi | 100 yd | 0 | 0 |
About Brown County
- Population: 273,909 (2024 estimate)
- State: Wisconsin
- NOAA Weather Radio SAME code: 055009 (how to use it)
- Cities: Green Bay