Chester County weather alerts
There are no active weather alerts for Chester County, SC right now.
Since 2016 the National Weather Service has issued about 575 alerts that included Chester County, roughly 58 a year. The most common is the severe thunderstorm warning (167 from 2016 to 2025). The last tornado warning was issued on March 5, 2025. 17 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 Chester County at the moment. This page updates automatically when the National Weather Service issues one. Check neighboring Union County, York County, Lancaster County, Fairfield County.
Chester County alert history
Alert events that included Chester County or its forecast zones, from the NWS warning archive.
| Alert type | 2016–2025 | 2026 | Last issued |
|---|---|---|---|
| Severe Thunderstorm Warning | 167 | 22 | September 6, 2026 |
| Dense Fog Advisory | 83 | 2 | January 7, 2026 |
| Severe Thunderstorm Watch | 37 | 6 | September 6, 2026 |
| Flood Advisory | 33 | 2 | October 4, 2026 |
| Wind Advisory | 33 | 0 | March 15, 2025 |
| Flood Watch | 29 | 0 | September 25, 2024 |
| Heat Advisory | 29 | 9 | September 5, 2026 |
| Freeze Warning | 26 | 0 | November 11, 2025 |
| Tornado Watch | 26 | 1 | March 12, 2026 |
| Frost Advisory | 24 | 0 | November 1, 2025 |
| Freeze Watch | 20 | 0 | November 11, 2025 |
| Tornado Warning | 17 | 0 | March 5, 2025 |
| Flash Flood Warning | 9 | 0 | September 27, 2024 |
| Winter Weather Advisory | 9 | 1 | January 26, 2026 |
| Red Flag Warning | 6 | 1 | March 28, 2026 |
| Winter Storm Watch | 6 | 2 | January 30, 2026 |
| Winter Storm Warning | 5 | 1 | January 30, 2026 |
| Fire Weather Watch | 4 | 1 | March 28, 2026 |
| Tropical Storm Warning | 3 | 0 | September 25, 2024 |
| Cold Weather Advisory | 3 | 2 | February 1, 2026 |
| High Wind Warning | 1 | 0 | February 24, 2016 |
| Tropical Storm Watch | 1 | 0 | October 10, 2018 |
| Flood Warning | 1 | 0 | February 7, 2020 |
| Extreme Heat Watch | 1 | 0 | June 14, 2022 |
| Extreme Heat Warning | 1 | 0 | June 14, 2022 |
| Ice Storm Warning | 1 | 1 | January 24, 2026 |
| Extreme Cold Watch | 0 | 1 | February 1, 2026 |
| Extreme Cold Warning | 0 | 1 | February 1, 2026 |
Tornado history in Chester County
17 tornadoes have been recorded in Chester County since 1950, killing 1 people and injuring 4. That ranks 37 of 46 counties in South Carolina. The most recent was on November 21, 2023 (rated EF0).
Strongest tornadoes in Chester County
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| April 15, 1994 | F2 | Chester County | 3 mi | 73 yd | 1 | 4 |
| May 5, 2020 | EF2 | Chester County | 14 mi | 200 yd | 0 | 0 |
| May 5, 2020 | EF1 | Chester County | 4.6 mi | 100 yd | 0 | 0 |
| April 19, 1981 | F1 | Chester County | 2 mi | 33 yd | 0 | 0 |
| April 6, 1955 | F1 | Chester County | 1.5 mi | 100 yd | 0 | 0 |
Most recent tornadoes
| Date | Rating | County | Path length | Width | Deaths | Injuries |
|---|---|---|---|---|---|---|
| November 21, 2023 | EF0 | Chester County | 0 mi | 20 yd | 0 | 0 |
| May 23, 2022 | EF0 | Chester County | 0.5 mi | 25 yd | 0 | 0 |
| May 5, 2020 | EF2 | Chester County | 14 mi | 200 yd | 0 | 0 |
| May 5, 2020 | EF1 | Chester County | 4.6 mi | 100 yd | 0 | 0 |
| November 16, 2011 | EF1 | Chester County | 1.4 mi | 100 yd | 0 | 0 |
About Chester County
- Population: 32,323 (2024 estimate)
- State: South Carolina
- NOAA Weather Radio SAME code: 045023 (how to use it)