Alert archive / South Carolina / Severe Thunderstorm Warnings in 2026
Severe Thunderstorm Warning 2, NWS Greenville-Spartanburg, SC
NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Mar 12, 2026, 9:08 AM EDT for Chester County, Union County, York County, South Carolina. It was in force for 52 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
- Mar 12, 2026, 9:08 AM EDT (13:08 UTC)
- Expired
- Mar 12, 2026, 10:00 AM EDT
- In force
- 52 min
- Issued by
- NWS Greenville-Spartanburg, SC
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Chester County, SC, Union County, SC, York County, SC
The radar
The Greer radar (KGSP), 83 km from the middle of the area, began a volume at 13:12 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Mar 12, 7:14 AM EDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 1.1 hours before the alert went out and 193 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
- 171 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 1007 m above ground
- 0-6 km bulk shear
- 73 kt
- 0-1 km storm-relative helicity
- 89 m²/s²
- 0-3 km storm-relative helicity
- 147 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.4
The office that day
Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 12, 7:52 AM EDT | Special Weather Statement | GSP | Catawba, Cleveland, Lincoln | 23 min |
| Mar 12, 8:19 AM EDT | Special Weather Statement | GSP | Catawba, Iredell, Lincoln | 26 min |
| Mar 12, 8:43 AM EDT | Special Weather Statement | GSP | Davie, Iredell | 47 min |
| Mar 12, 8:44 AM EDT | Special Weather Statement | GSP | Davie, Iredell | 46 min |
| Mar 12, 9:39 AM EDT | Special Weather Statement | GSP | Cabarrus, Union | 66 min |
| Mar 12, 7:05 AM EDT | Special Weather Statement | GSP | Spartanburg | 25 min |
| Mar 12, 7:48 AM EDT | Special Weather Statement | GSP | Spartanburg | 42 min |
| Mar 12, 8:21 AM EDT | Special Weather Statement | GSP | Greenwood, Laurens, Union | 24 min |
| Mar 12, 8:30 AM EDT | Severe Thunderstorm Warning | GSP | Chester, Laurens, Spartanburg, Union | 60 min |
| Mar 12, 9:50 AM EDT | Special Weather Statement | GSP | Chester | 25 min |
Nearby
Severe Thunderstorm Warnings in South Carolina, 2026Every severe thunderstorm warning in 2026
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.