Alert archive / South Carolina / Severe Thunderstorm Warnings in 2025
Severe Thunderstorm Warning 18, NWS Charleston, SC
NWS Charleston, SC issued this severe thunderstorm warning at Apr 23, 2025, 2:49 PM EDT for Allendale County, Colleton County, Hampton County, South Carolina. It was in force for 56 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 23, 2025, 2:49 PM EDT (18:49 UTC)
- Expired
- Apr 23, 2025, 3:45 PM EDT
- In force
- 56 min
- Issued by
- NWS Charleston, SC
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Allendale County, SC, Colleton County, SC, Hampton County, SC
The radar
The Charleston,SC radar (KCLX), 24 km from the middle of the area, began a volume at 18:52 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 12:00Z, 6.8 hours before the alert went out and 98 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 295 J/kg
- Mixed-layer CIN
- -93 J/kg
- Mixed-layer LCL
- 879 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 14 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Charleston, SC wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 23, 1:55 PM EDT, 54 minutes earlier.
Area forecast discussion, Apr 23, 1:55 PM EDT, 54 minutes before
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</html>Hazardous weather outlook, Apr 23, 9:15 AM EDT, 5 hours 34 minutes before
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Special weather statement, Apr 23, 2:07 PM EDT, 42 minutes before
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</html>The office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 22, 9:38 PM EDT | Special Weather Statement | CHS | Candler | 37 min |
| Apr 23, 2:45 PM EDT | Special Weather Statement | CHS | Jenkins | 30 min |
| Apr 23, 3:15 PM EDT | Special Weather Statement | CHS | Jenkins | 30 min |
| Apr 23, 3:27 PM EDT | Severe Thunderstorm Warning | CHS | Jenkins | 26 min |
| Apr 23, 3:36 PM EDT | Severe Thunderstorm Warning | CHS | Jenkins, Screven | 39 min |
| Apr 23, 4:20 PM EDT | Special Weather Statement | CHS | Jenkins | 25 min |
| Apr 23, 4:45 PM EDT | Special Weather Statement | CHS | Screven | 30 min |
| Apr 23, 5:17 PM EDT | Special Weather Statement | CHS | Effingham | 28 min |
| Apr 23, 5:51 PM EDT | Severe Thunderstorm Warning | CHS | Effingham | 39 min |
| Apr 23, 6:54 PM EDT | Severe Thunderstorm Warning | CHS | Candler, Evans, Tattnall | 51 min |
| Apr 23, 7:26 PM EDT | Special Weather Statement | CHS | Tattnall | 34 min |
| Apr 23, 2:07 PM EDT | Special Weather Statement | CHS | Allendale | 23 min |
| Apr 23, 2:37 PM EDT | Special Weather Statement | CHS | Allendale | 23 min |
| Apr 23, 3:03 PM EDT | Special Weather Statement | CHS | Colleton | 42 min |
| Apr 23, 3:28 PM EDT | Severe Thunderstorm Warning | CHS | Colleton, Dorchester | 47 min |
| Apr 23, 4:38 PM EDT | Special Weather Statement | CHS | Dorchester | 22 min |
| Apr 23, 4:44 PM EDT | Special Weather Statement | CHS | Colleton | 31 min |
Nearby
Severe Thunderstorm Warnings in South Carolina, 2025Every severe thunderstorm warning in 2025
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.