St. Tammany Parish weather alerts
There are no active weather alerts for St. Tammany Parish, LA right now.
Since 2016 the National Weather Service has issued about 1,970 alerts that included St. Tammany Parish, roughly 197 a year. The most common is the flood warning (340 from 2016 to 2025). The last tornado warning was issued on June 18, 2026. 72 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 St. Tammany Parish at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Tangipahoa Parish, Jefferson Parish, Orleans Parish, Washington Parish.
St. Tammany Parish alert history
Alert events that included St. Tammany Parish or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Flood Warning | 340 | 21 | June 18, 2026 |
| Dense Fog Advisory | 267 | 23 | November 4, 2026 |
| Severe Thunderstorm Warning | 243 | 28 | September 21, 2026 |
| Flood Advisory | 202 | 24 | October 4, 2026 |
| Heat Advisory | 148 | 21 | September 7, 2026 |
| Coastal Flood Advisory | 96 | 11 | November 2, 2026 |
| Flash Flood Warning | 96 | 12 | June 20, 2026 |
| Flood Watch | 88 | 6 | October 3, 2026 |
| Tornado Watch | 84 | 5 | June 18, 2026 |
| Tornado Warning | 75 | 15 | June 18, 2026 |
| Wind Advisory | 75 | 4 | October 16, 2026 |
| Extreme Heat Warning | 47 | 8 | August 21, 2026 |
| Severe Thunderstorm Watch | 30 | 4 | August 24, 2026 |
| Extreme Heat Watch | 28 | 3 | August 17, 2026 |
| Freeze Warning | 25 | 3 | March 18, 2026 |
| Cold Weather Advisory | 24 | 2 | February 5, 2026 |
| Coastal Flood Warning | 15 | 1 | July 21, 2026 |
| Red Flag Warning | 15 | 5 | October 17, 2026 |
| Tropical Storm Warning | 11 | 2 | October 8, 2026 |
| Freeze Watch | 10 | 1 | March 17, 2026 |
| Storm Surge Warning | 8 | 1 | October 8, 2026 |
| High Wind Warning | 8 | 0 | March 15, 2025 |
| Winter Weather Advisory | 7 | 0 | January 15, 2024 |
| Hurricane Watch | 6 | 0 | September 9, 2024 |
| Tropical Storm Watch | 6 | 2 | October 7, 2026 |
| Hurricane Warning | 4 | 0 | August 27, 2021 |
| Fire Weather Watch | 4 | 2 | October 17, 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 St. Tammany Parish
72 tornadoes have been recorded in St. Tammany Parish since 1950, injuring 58 people. That ranks 6 of 64 counties in Louisiana. The most recent was on March 15, 2025 (rated EF1).
Strongest tornadoes in St. Tammany Parish
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| May 26, 2011 | EF3 | St. Tammany Parish | 6.1 mi | 150 yd | 0 | 4 |
| February 7, 2017 | EF2 | Livingston Parish | 23.1 mi | 750 yd | 0 | 3 |
| April 10, 2024 | EF2 | St. Tammany Parish | 11 mi | 350 yd | 0 | 0 |
| November 21, 1997 | F2 | St. Tammany Parish | 9 mi | 200 yd | 0 | 43 |
| November 20, 1974 | F2 | St. Tammany Parish | 7.1 mi | 33 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| March 15, 2025 | EF1 | St. Tammany Parish | 7.7 mi | 50 yd | 0 | 0 |
| December 28, 2024 | EF1 | St. Tammany Parish | 1.2 mi | 50 yd | 0 | 0 |
| December 27, 2024 | EF0 | St. Tammany Parish | 1.8 mi | 50 yd | 0 | 0 |
| April 10, 2024 | EF2 | St. Tammany Parish | 11 mi | 350 yd | 0 | 0 |
| April 10, 2024 | EF1 | St. Tammany Parish | 3.3 mi | 200 yd | 0 | 0 |
About St. Tammany Parish
- Population: 277,615 (2024 estimate)
- State: Louisiana
- NOAA Weather Radio SAME code: 022103 (how to use it)