Alert archive / South Carolina / Freeze Warnings in 2023
Freeze Warning 4, NWS Charleston, SC
NWS Charleston, SC issued this freeze warning at Mar 20, 2023, 3:05 PM EDT for 4 counties in South Carolina; Jenkins County, Screven County, Georgia. It took effect at Mar 21, 2023, 3:00 AM EDT. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Mar 20, 2023, 3:05 PM EDT (19:05 UTC)
- In effect from
- Mar 21, 2023, 3:00 AM EDT
- Expired
- Mar 21, 2023, 9:00 AM EDT
- In force
- 6 hr
- Issued by
- NWS Charleston, SC
Counties Jenkins County, GA, Screven County, GA, Allendale County, SC, Berkeley County, SC, Colleton County, SC, Dorchester County, SC
The radar
The Charleston,SC radar (KCLX), 32 km from the middle of the area, began a volume at 19:04 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, 7.1 hours before the alert went out and 330 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1532 m above ground
- 0-6 km bulk shear
- 94 kt
- 0-1 km storm-relative helicity
- -10 m²/s²
- 0-3 km storm-relative helicity
- 37 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The office that day
Everything else NWS Charleston, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 20, 3:16 AM EDT | Coastal Flood Advisory | CHS | 6 hr | |
| Mar 20, 3:04 PM EDT | Coastal Flood Advisory | CHS | 6 hr | |
| Mar 20, 3:05 PM EDT | Frost Advisory | CHS | Hampton | 18 hr |
Nearby
Freeze Warnings in South Carolina, 2023Freeze Warnings in Georgia, 2023Every freeze 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.