Harrison County weather alerts
There are no active weather alerts for Harrison County, MS right now.
Since 2016 the National Weather Service has issued about 1,459 alerts that included Harrison County, roughly 146 a year. The most common is the dense fog advisory (254 from 2016 to 2025). The last tornado warning was issued on June 18, 2026. 90 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 Harrison County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Stone County, Jackson County, Hancock County.
Harrison County alert history
Alert events that included Harrison County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Dense Fog Advisory | 254 | 23 | November 4, 2026 |
| Flood Warning | 145 | 20 | September 10, 2026 |
| Heat Advisory | 137 | 21 | September 7, 2026 |
| Severe Thunderstorm Warning | 129 | 18 | August 27, 2026 |
| Flood Advisory | 123 | 24 | October 4, 2026 |
| Flood Watch | 75 | 5 | October 3, 2026 |
| Flash Flood Warning | 75 | 17 | September 10, 2026 |
| Wind Advisory | 75 | 4 | October 16, 2026 |
| Tornado Watch | 74 | 6 | June 18, 2026 |
| Tornado Warning | 72 | 6 | June 18, 2026 |
| Coastal Flood Advisory | 62 | 7 | October 31, 2026 |
| Extreme Heat Warning | 40 | 7 | August 21, 2026 |
| Severe Thunderstorm Watch | 31 | 3 | August 24, 2026 |
| Extreme Heat Watch | 27 | 3 | August 17, 2026 |
| Freeze Warning | 26 | 3 | March 18, 2026 |
| Cold Weather Advisory | 23 | 2 | February 5, 2026 |
| Red Flag Warning | 21 | 4 | October 17, 2026 |
| Storm Surge Warning | 10 | 1 | October 8, 2026 |
| Tropical Storm Warning | 9 | 2 | October 8, 2026 |
| Freeze Watch | 8 | 1 | March 17, 2026 |
| Hurricane Watch | 6 | 1 | October 7, 2026 |
| Winter Weather Advisory | 6 | 0 | January 15, 2024 |
| Tropical Storm Watch | 5 | 1 | July 20, 2026 |
| High Wind Warning | 5 | 0 | March 4, 2025 |
| Fire Weather Watch | 5 | 2 | October 17, 2026 |
| Hurricane Warning | 4 | 0 | October 27, 2020 |
| Coastal Flood Warning | 4 | 1 | July 21, 2026 |
| Extreme Cold Watch | 2 | 2 | January 31, 2026 |
| High Wind Watch | 2 | 0 | March 4, 2025 |
| Frost Advisory | 1 | 0 | April 2, 2021 |
| Extreme Cold Warning | 1 | 2 | January 31, 2026 |
| Winter Storm Watch | 1 | 0 | January 21, 2025 |
| Winter Storm Warning | 1 | 0 | January 21, 2025 |
Tornado history in Harrison County
90 tornadoes have been recorded in Harrison County since 1950, killing 6 people and injuring 84. That ranks 4 of 82 counties in Mississippi. The most recent was on April 10, 2024 (rated EF1).
Strongest tornadoes in Harrison County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| October 30, 1967 | F3 | Harrison County | 2 mi | 400 yd | 4 | 17 |
| April 13, 1980 | F3 | Harrison County | 15.9 mi | 400 yd | 0 | 25 |
| May 16, 1980 | F3 | Harrison County | 11.5 mi | 800 yd | 0 | 0 |
| May 19, 1980 | F3 | Harrison County | 10.6 mi | 800 yd | 0 | 4 |
| November 3, 1968 | F3 | Harrison County | 2 mi | 123 yd | 0 | 5 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| April 10, 2024 | EF1 | Harrison County | 1.5 mi | 75 yd | 0 | 0 |
| April 10, 2024 | EF0 | Harrison County | 4.9 mi | 100 yd | 0 | 0 |
| December 14, 2022 | EF1 | Harrison County | 2.3 mi | 100 yd | 0 | 0 |
| October 29, 2022 | EF0 | Harrison County | 1.6 mi | 50 yd | 0 | 0 |
| August 30, 2021 | EF0 | Harrison County | 1.1 mi | 150 yd | 0 | 0 |
About Harrison County
- Population: 213,730 (2024 estimate)
- State: Mississippi
- NOAA Weather Radio SAME code: 028047 (how to use it)