Alert archive / South Carolina / Severe Thunderstorm Warnings in 2023
Severe Thunderstorm Warning 91, NWS Charleston, SC
NWS Charleston, SC issued this severe thunderstorm warning at Sep 11, 2023, 6:38 PM EDT for 5 counties in South Carolina. It was in force for 67 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
- Sep 11, 2023, 6:38 PM EDT (22:38 UTC)
- Expired
- Sep 11, 2023, 7:45 PM EDT
- In force
- 67 min
- Issued by
- NWS Charleston, SC
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Beaufort County, SC, Charleston County, SC, Colleton County, SC, Hampton County, SC, Jasper County, SC
The radar
The Charleston,SC radar (KCLX), 33 km from the middle of the area, began a volume at 22:38 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
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 10.6 hours before the alert went out and 365 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
- 1464 J/kg
- Mixed-layer CIN
- -26 J/kg
- Mixed-layer LCL
- 780 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 23 m²/s²
- 0-3 km storm-relative helicity
- 55 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
The office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 10, 8:13 PM EDT | Special Weather Statement | CHS | Dorchester | 47 min |
| Sep 11, 3:43 PM EDT | Rip Current Statement | CHS | 5 days | |
| Sep 11, 3:49 PM EDT | Special Weather Statement | CHS | Berkeley, Dorchester | 41 min |
| Sep 11, 4:06 PM EDT | Severe Thunderstorm Warning | CHS | Berkeley, Colleton, Dorchester | 54 min |
| Sep 11, 4:26 PM EDT | Special Weather Statement | CHS | Berkeley | 34 min |
| Sep 11, 4:48 PM EDT | Special Weather Statement | CHS | Hampton | 42 min |
| Sep 11, 4:52 PM EDT | Special Weather Statement | CHS | Berkeley, Charleston | 38 min |
| Sep 11, 5:22 PM EDT | Severe Thunderstorm Warning | CHS | Berkeley, Charleston, Dorchester | 53 min |
| Sep 11, 5:25 PM EDT | Special Marine Warning | CHS | 63 min | |
| Sep 11, 5:28 PM EDT | Special Weather Statement | CHS | Hampton | 47 min |
| Sep 11, 5:38 PM EDT | Special Weather Statement | CHS | Colleton | 52 min |
| Sep 11, 6:13 PM EDT | Special Weather Statement | CHS | Colleton | 47 min |
| Sep 11, 6:33 PM EDT | Areal Flood Advisory | CHS | Colleton | 72 min |
| Sep 11, 7:28 PM EDT | Special Weather Statement | CHS | Beaufort | 47 min |
| Sep 11, 7:42 PM EDT | Special Marine Warning | CHS | 46 min | |
| Sep 11, 7:44 PM EDT | Special Weather Statement | CHS | Beaufort | 16 min |
| Sep 11, 3:17 PM EDT | Special Weather Statement | CHS | Chatham | 43 min |
| Sep 11, 4:56 PM EDT | Special Weather Statement | CHS | Long | 49 min |
| Sep 11, 4:59 PM EDT | Special Weather Statement | CHS | Bryan | 46 min |
| Sep 11, 5:41 PM EDT | Special Weather Statement | CHS | Bryan, Liberty | 49 min |
Nearby
Severe Thunderstorm Warnings in South Carolina, 2023Every severe thunderstorm warning in 2023
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.