Plymouth County weather alerts
There are no active weather alerts for Plymouth County, IA right now.
Since 2016 the National Weather Service has issued about 1,032 alerts that included Plymouth County, roughly 103 a year. The most common is the severe thunderstorm warning (193 from 2016 to 2025). The last tornado warning was issued on May 18, 2026. 51 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 Plymouth County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Woodbury County, Union County, Sioux County, Cherokee County.
Plymouth County alert history
Alert events that included Plymouth County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Severe Thunderstorm Warning | 193 | 43 | October 9, 2026 |
| Dense Fog Advisory | 102 | 6 | September 30, 2026 |
| Flood Warning | 98 | 0 | July 31, 2025 |
| Wind Advisory | 93 | 3 | June 17, 2026 |
| Winter Weather Advisory | 84 | 3 | February 19, 2026 |
| Severe Thunderstorm Watch | 79 | 15 | September 2, 2026 |
| Red Flag Warning | 54 | 9 | May 14, 2026 |
| Heat Advisory | 51 | 7 | September 4, 2026 |
| Cold Weather Advisory | 37 | 3 | March 16, 2026 |
| Winter Storm Watch | 31 | 1 | March 15, 2026 |
| Fire Weather Watch | 29 | 5 | April 16, 2026 |
| Flash Flood Warning | 26 | 3 | September 7, 2026 |
| Flood Watch | 21 | 2 | September 6, 2026 |
| Tornado Watch | 17 | 3 | June 10, 2026 |
| Winter Storm Warning | 16 | 0 | November 28, 2025 |
| High Wind Warning | 14 | 3 | March 15, 2026 |
| Blizzard Warning | 13 | 1 | March 15, 2026 |
| Extreme Heat Warning | 13 | 3 | July 25, 2026 |
| Frost Advisory | 13 | 3 | May 20, 2026 |
| Tornado Warning | 12 | 1 | May 18, 2026 |
| Freeze Warning | 9 | 2 | October 17, 2026 |
| Extreme Heat Watch | 8 | 0 | July 27, 2025 |
| Extreme Cold Warning | 8 | 1 | January 23, 2026 |
| Extreme Cold Watch | 4 | 1 | January 23, 2026 |
| Freeze Watch | 3 | 1 | October 17, 2026 |
| High Wind Watch | 3 | 1 | March 13, 2026 |
| Ice Storm Warning | 1 | 0 | January 2, 2023 |
Tornado history in Plymouth County
51 tornadoes have been recorded in Plymouth County since 1950, injuring 13 people. That ranks 12 of 99 counties in Iowa. The most recent was on April 16, 2024 (rated EF1).
Strongest tornadoes in Plymouth County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| May 5, 1964 | F3 | Woodbury County | 67 mi | 300 yd | 0 | 7 |
| June 7, 1965 | F3 | Plymouth County | 11.5 mi | 100 yd | 0 | 0 |
| May 8, 1964 | F3 | Plymouth County | 9.3 mi | 200 yd | 0 | 0 |
| June 14, 1967 | F3 | Plymouth County | 6.2 mi | 500 yd | 0 | 3 |
| July 5, 1978 | F2 | Plymouth County | 20.8 mi | 30 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| April 16, 2024 | EF1 | Plymouth County | 1.3 mi | 25 yd | 0 | 0 |
| April 16, 2024 | ? | Plymouth County | 0 mi | 10 yd | 0 | 0 |
| April 16, 2024 | ? | Plymouth County | 0 mi | 10 yd | 0 | 0 |
| December 15, 2021 | EF1 | Plymouth County | 3.7 mi | 75 yd | 0 | 0 |
| May 28, 2016 | EF0 | Plymouth County | 0.1 mi | 25 yd | 0 | 0 |
About Plymouth County
- Population: 25,825 (2024 estimate)
- State: Iowa
- NOAA Weather Radio SAME code: 019149 (how to use it)