Harris County weather alerts
There are no active weather alerts for Harris County, TX right now.
Since 2016 the National Weather Service has issued about 2,633 alerts that included Harris County, roughly 263 a year. The most common is the flood advisory (713 from 2016 to 2025). The last tornado warning was issued on February 15, 2026. 253 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 Harris County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Chambers County, Liberty County, Montgomery County, Brazoria County.
Harris County alert history
Alert events that included Harris County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Flood Advisory | 713 | 69 | October 2, 2026 |
| Flood Warning | 530 | 12 | October 2, 2026 |
| Severe Thunderstorm Warning | 378 | 35 | August 28, 2026 |
| Flash Flood Warning | 216 | 13 | July 23, 2026 |
| Dense Fog Advisory | 210 | 20 | November 2, 2026 |
| Tornado Warning | 136 | 1 | February 15, 2026 |
| Heat Advisory | 99 | 10 | September 14, 2026 |
| Wind Advisory | 79 | 3 | October 16, 2026 |
| Flood Watch | 57 | 6 | October 1, 2026 |
| Severe Thunderstorm Watch | 43 | 1 | May 11, 2026 |
| Tornado Watch | 32 | 2 | March 11, 2026 |
| Coastal Flood Advisory | 21 | 0 | November 16, 2024 |
| Extreme Heat Warning | 18 | 2 | July 22, 2026 |
| Red Flag Warning | 12 | 1 | March 16, 2026 |
| Freeze Warning | 12 | 1 | February 1, 2026 |
| Cold Weather Advisory | 12 | 1 | January 31, 2026 |
| Coastal Flood Warning | 9 | 0 | September 10, 2024 |
| Tropical Storm Warning | 8 | 0 | July 6, 2024 |
| Fire Weather Watch | 7 | 1 | March 16, 2026 |
| Tropical Storm Watch | 7 | 0 | September 9, 2024 |
| Winter Weather Advisory | 5 | 0 | January 15, 2024 |
| Freeze Watch | 5 | 1 | February 1, 2026 |
| Winter Storm Warning | 4 | 1 | January 24, 2026 |
| Storm Surge Warning | 4 | 0 | July 6, 2024 |
| Extreme Cold Watch | 4 | 2 | January 26, 2026 |
| Extreme Cold Warning | 4 | 1 | January 25, 2026 |
| Winter Storm Watch | 3 | 1 | January 24, 2026 |
| Hurricane Watch | 2 | 0 | September 19, 2020 |
| Extreme Heat Watch | 2 | 0 | June 25, 2023 |
| Hurricane Warning | 1 | 0 | August 25, 2020 |
Tornado history in Harris County
253 tornadoes have been recorded in Harris County since 1950, killing 12 people and injuring 321. That ranks 1 of 254 counties in Texas. The most recent was on November 24, 2025 (rated EF2).
Strongest tornadoes in Harris County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| November 21, 1992 | F4 | Harris County | 30 mi | 1,800 yd | 0 | 16 |
| February 5, 1986 | F3 | Harris County | 5 mi | 70 yd | 2 | 0 |
| December 13, 1977 | F3 | Harris County | 25.1 mi | 400 yd | 1 | 40 |
| February 11, 1950 | F3 | Harris County | 12 mi | 1,000 yd | 1 | 12 |
| October 28, 1974 | F3 | Harris County | 3.3 mi | 50 yd | 1 | 7 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| November 24, 2025 | EF2 | Harris County | 3.8 mi | 400 yd | 0 | 0 |
| November 24, 2025 | EF1 | Harris County | 2.6 mi | 500 yd | 0 | 0 |
| December 28, 2024 | EF1 | Waller County | 10.9 mi | 150 yd | 0 | 0 |
| December 26, 2024 | EF0 | Harris County | 2.1 mi | 25 yd | 0 | 0 |
| December 26, 2024 | EF1 | Harris County | 0.1 mi | 25 yd | 0 | 0 |
About Harris County
- Population: 5,009,302 (2024 estimate)
- State: Texas
- NOAA Weather Radio SAME code: 048201 (how to use it)
- Cities: Houston, Pasadena