Alert archive / North Carolina / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 190, NWS Greenville-Spartanburg, SC

July 18, 20234 counties in North Carolina; Oconee County, South Carolina; Rabun County, Georgia

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 18, 2023, 11:59 PM EDT for 4 counties in North Carolina; Oconee County, South Carolina; Rabun County, Georgia. It was in force for 46 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
Jul 18, 2023, 11:59 PM EDT (03:59 UTC)
Expired
Jul 19, 2023, 12:45 AM EDT
In force
46 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Rabun County, GA, Jackson County, NC, Macon County, NC, Swain County, NC, Transylvania County, NC, Oconee County, SC

The radar

The Greer radar (KGSP), 95 km from the middle of the area, began a volume at 04:03 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

Nashville Metro, TN (KBNA), launched 00:00Z, 4.0 hours before the alert went out and 325 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, Nashville Metro, TN at 00:00Z on 2023-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 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, Nashville Metro, TN at 00:00Z on 2023-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 127 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1366 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
127 m²/s²
0-3 km storm-relative helicity
139 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
Jul 18, 9:18 PM EDTSpecial Weather StatementGSPGraham42 min
Jul 18, 10:00 PM EDTSpecial Weather StatementGSPGraham, Swain45 min
Jul 18, 11:15 PM EDTSevere Thunderstorm WarningGSPMacon60 min
Jul 18, 11:21 PM EDTSpecial Weather StatementGSPGraham54 min
Jul 19, 12:35 AM EDTSevere Thunderstorm WarningGSPTransylvania55 min
Jul 19, 1:12 AM EDTSevere Thunderstorm WarningGSPHenderson, Transylvania33 min
Jul 19, 1:33 AM EDTSevere Thunderstorm WarningGSPHenderson, Polk44 min
Jul 19, 2:01 AM EDTSpecial Weather StatementGSPRutherford44 min
Jul 19, 2:19 AM EDTSpecial Weather StatementGSPSpartanburg26 min
Jul 19, 2:44 AM EDTSpecial Weather StatementGSPCherokee46 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2023Severe Thunderstorm Warnings in South Carolina, 2023Severe Thunderstorm Warnings in Georgia, 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.