Sumter County, South Carolina weather alerts
No watches, warnings or advisories are in force for Sumter County.
Checked Sun, Sep 20, 2026, 1:53 PM EDT. Times are Eastern Daylight Time.
Warnings on the map
Every watch, warning and advisory the National Weather Service has in force over Sumter County, South Carolina. Open it for the live map, where it pans and zooms.























Open the live map with warnings and watches
Map layer from NOAA National Weather Service. Boundaries from the Iowa Environmental Mesonet.
Alerts in force
Nothing is in force for Sumter County right now. Its warnings come from the National Weather Service and appear here within a minute of being issued; every one of the past year is below.
The past year in Sumter County
In the past year the National Weather Service issued 100 alerts for Sumter County, including 27 severe thunderstorm warnings, 3 flash flood warnings, 2 freeze warnings and 1 extreme cold warning.
| Product | Issued | Most recent |
|---|---|---|
| Severe Thunderstorm Warning | 27 | Sep 11, 2026 |
| Flash Flood Warning | 3 | Aug 1, 2026 |
| Freeze Warning | 2 | Mar 18, 2026 |
| Extreme Cold Warning | 1 | Jan 31, 2026 |
| Ice Storm Warning | 1 | Jan 24, 2026 |
| Red Flag Warning | 1 | Mar 28, 2026 |
| Winter Storm Warning | 1 | Jan 30, 2026 |
| Severe Thunderstorm Watch | 6 | Sep 6, 2026 |
| Extreme Cold Watch | 2 | Jan 31, 2026 |
| Freeze Watch | 2 | Mar 18, 2026 |
| Tornado Watch | 2 | Mar 16, 2026 |
| Winter Storm Watch | 2 | Jan 30, 2026 |
| Fire Weather Watch | 1 | Mar 28, 2026 |
| Flood Watch | 1 | Jul 24, 2026 |
| Lake Wind Advisory | 21 | Apr 8, 2026 |
| Flood Advisory | 8 | Sep 5, 2026 |
| Dense Fog Advisory | 7 | Aug 5, 2026 |
| Heat Advisory | 6 | Sep 5, 2026 |
| Cold Weather Advisory | 3 | Feb 1, 2026 |
| Freezing Fog Advisory | 1 | Feb 6, 2026 |
| Frost Advisory | 1 | Mar 19, 2026 |
| Wind Advisory | 1 | Feb 22, 2026 |
Warnings issued
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Flash Flood Warning
- Severe Thunderstorm Warning
- Flash Flood Warning
- Flash Flood Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Red Flag Warning
- Freeze Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Extreme Cold Warning
- Winter Storm Warning
- Ice Storm Warning
- Freeze Warning
Every alert, most recent first
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Watch
- Flood Advisory
- Severe Thunderstorm Warning
- Severe Thunderstorm Watch
- Severe Thunderstorm Warning
- Heat Advisory
- Flood Advisory
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Watch
- Heat Advisory
- Heat Advisory
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Dense Fog Advisory
- Flood Advisory
- Flash Flood Warning
- Flood Advisory
- Flood Advisory
- Severe Thunderstorm Watch
- Heat Advisory
- Flood Watch
- Heat Advisory
- Flood Advisory
- Severe Thunderstorm Warning
- Flash Flood Warning
- Flash Flood Warning
- Flood Advisory
- Severe Thunderstorm Watch
- Severe Thunderstorm Warning
- Severe Thunderstorm Watch
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
- Severe Thunderstorm Warning
The 40 most recent of 100.
From the Iowa Environmental Mesonet’s archive of NWS watches, warnings and advisories (VTEC), by the county’s own code and the forecast zones inside it. Each date links to the event at the IEM.
Nearby
The counties around Sumter County, with what is in force in each.
What this means
- Warning
- The hazard is happening or about to. Act now: a tornado warning means take shelter, a flash flood warning means move to higher ground.
- Watch
- Conditions favor the hazard. Nothing is happening yet; have a plan and be ready to act if a warning follows.
- Advisory
- A hazard that is less serious than a warning but can still cause trouble, such as dense fog, heat or light ice.
- Statement
- Information about weather that does not yet meet a warning: a strong storm, a hydrologic update, or a special weather statement.
Severity (extreme, severe, moderate, minor) is the rating the issuing office gives each product. More on the difference: tornado watch vs. tornado warning. Alerts come from the National Weather Service; follow its instructions and your local officials.
Sources
Alerts from the National Weather Service's public feed, read afresh every minute, and matched to counties and zones by their UGC codes. Warnings from outside the United States come from each country's own meteorological service. Follow the issuing office's instructions and your local officials.