Alert archive / South Carolina / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 165, NWS Greenville-Spartanburg, SC

June 28, 20204 counties in South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jun 28, 2020, 6:39 PM EDT for 4 counties in South Carolina. It was in force for 36 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
Jun 28, 2020, 6:39 PM EDT (22:39 UTC)
Expired
Jun 28, 2020, 7:15 PM EDT
In force
36 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Chester County, SC, Laurens County, SC, Spartanburg County, SC, Union County, SC

The radar

The Greer radar (KGSP), 52 km from the middle of the area, began a volume at 22:41 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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 10.7 hours before the alert went out and 224 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.

Skew-T log-pSkew-T log-p diagram, Greensboro/Hi Pt, NC at 12:00Z on 2020-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 80 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Greensboro/Hi Pt, NC at 12:00Z on 2020-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 81 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
80 J/kg
Mixed-layer CIN
-122 J/kg
Mixed-layer LCL
1253 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
81 m²/s²
0-3 km storm-relative helicity
70 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 28, 3:35 AM EDTSpecial Weather StatementGSPHaywood, Madison25 min
Jun 28, 4:07 AM EDTSpecial Weather StatementGSPHaywood, Swain38 min
Jun 28, 2:28 PM EDTSpecial Weather StatementGSPCleveland32 min
Jun 28, 3:03 PM EDTSpecial Weather StatementGSPLincoln27 min
Jun 28, 3:48 PM EDTSpecial Weather StatementGSPCleveland27 min
Jun 28, 3:52 PM EDTSpecial Weather StatementGSPGaston38 min
Jun 28, 4:13 PM EDTSpecial Weather StatementGSPCleveland32 min
Jun 28, 4:25 PM EDTSevere Thunderstorm WarningGSPGaston, Mecklenburg50 min
Jun 28, 4:26 PM EDTSpecial Weather StatementGSPHaywood, Madison, Yancey49 min
Jun 28, 5:12 PM EDTSevere Thunderstorm WarningGSPUnion48 min
Jun 28, 4:02 PM EDTSpecial Weather StatementGSPSpartanburg28 min
Jun 28, 4:29 PM EDTSpecial Weather StatementGSPOconee31 min
Jun 28, 4:38 PM EDTSpecial Weather StatementGSPYork37 min
Jun 28, 4:47 PM EDTSpecial Weather StatementGSPCherokee, York43 min
Jun 28, 4:56 PM EDTSpecial Weather StatementGSPSpartanburg34 min
Jun 28, 5:01 PM EDTSpecial Weather StatementGSPPickens29 min
Jun 28, 5:24 PM EDTSevere Thunderstorm WarningGSPAnderson, Greenville, Pickens51 min
Jun 28, 5:27 PM EDTSpecial Weather StatementGSPSpartanburg, Union33 min
Jun 28, 5:28 PM EDTSpecial Weather StatementGSPYork47 min
Jun 28, 5:54 PM EDTSevere Thunderstorm WarningGSPAbbeville, Anderson, Greenville, Greenwood, Laurens, Spartanburg and 1 more51 min
Jun 28, 5:58 PM EDTSpecial Weather StatementGSPChester, Union32 min
Jun 28, 6:28 PM EDTSpecial Weather StatementGSPChester, Union32 min
Jun 28, 6:41 PM EDTSpecial Weather StatementGSPLaurens34 min
Jun 28, 7:11 PM EDTSpecial Weather StatementGSPUnion19 min
Jun 28, 7:16 PM EDTSpecial Weather StatementGSPGreenwood14 min
Jun 28, 3:41 PM EDTSpecial Weather StatementGSPRabun49 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2020Every severe thunderstorm warning in 2020

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.