Alert archive / South Carolina / Severe Thunderstorm Warnings in 2025
Severe Thunderstorm Warning 110, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at May 21, 2025, 1:25 AM EDT for Oconee County, South Carolina; Rabun County, Georgia. It was in force for 35 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
- May 21, 2025, 1:25 AM EDT (05:25 UTC)
- Expired
- May 21, 2025, 2:00 AM EDT
- In force
- 35 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Rabun County, GA, Oconee County, SC
The radar
The Greer radar (KGSP), 93 km from the middle of the area, began a volume at 05:25 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 00:00Z, 5.4 hours before the alert went out and 199 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
- 735 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 1407 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 124 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 5.0
The office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 20, 9:54 PM EDT | Special Weather Statement | GSP | Lincoln | 36 min |
| May 20, 10:32 PM EDT | Special Weather Statement | GSP | Alexander | 28 min |
| May 20, 10:47 PM EDT | Special Weather Statement | GSP | Iredell | 28 min |
| May 20, 10:55 PM EDT | Special Weather Statement | GSP | Graham | 35 min |
| May 20, 11:04 PM EDT | Special Weather Statement | GSP | Graham | 26 min |
| May 20, 11:28 PM EDT | Special Weather Statement | GSP | Iredell | 32 min |
| May 20, 11:58 PM EDT | Special Weather Statement | GSP | Macon | 47 min |
| May 21, 12:03 AM EDT | Special Weather Statement | GSP | Madison | 27 min |
| May 21, 12:37 AM EDT | Special Weather Statement | GSP | Davie | 23 min |
| May 21, 2:27 AM EDT | Special Weather Statement | GSP | Cleveland | 48 min |
| May 21, 3:13 AM EDT | Special Weather Statement | GSP | Cabarrus, Mecklenburg | 47 min |
| May 21, 3:46 AM EDT | Special Weather Statement | GSP | Union | 44 min |
| May 20, 8:13 PM EDT | Special Weather Statement | GSP | York | 47 min |
| May 21, 12:50 AM EDT | Special Weather Statement | GSP | Oconee, Pickens | 40 min |
| May 21, 1:03 AM EDT | Severe Thunderstorm Warning | GSP | Anderson, Oconee, Pickens | 57 min |
| May 21, 1:41 AM EDT | Special Weather Statement | GSP | Greenville, Spartanburg | 49 min |
| May 21, 1:52 AM EDT | Severe Thunderstorm Warning | GSP | Anderson, Greenville, Oconee, Pickens | 38 min |
| May 21, 2:23 AM EDT | Special Weather Statement | GSP | Abbeville, Anderson | 37 min |
| May 21, 2:30 AM EDT | Special Weather Statement | GSP | Laurens, Union | 45 min |
| May 21, 3:01 AM EDT | Special Weather Statement | GSP | Greenwood, Laurens | 44 min |
| May 21, 3:05 AM EDT | Special Weather Statement | GSP | Chester, Union | 55 min |
| May 21, 3:19 AM EDT | Special Weather Statement | GSP | York | 26 min |
Nearby
Severe Thunderstorm Warnings in South Carolina, 2025Severe Thunderstorm Warnings in Georgia, 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.