Alert archive / North Carolina / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 187, NWS Greenville-Spartanburg, SC

July 18, 2023Henderson County, North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 18, 2023, 5:14 PM EDT for Henderson County, North Carolina. It was in force for 61 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, 5:14 PM EDT (21:14 UTC)
Expired
Jul 18, 2023, 6:15 PM EDT
In force
61 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Henderson County, NC

The radar

The Greer radar (KGSP), 56 km from the middle of the area, began a volume at 21:15 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, 9.2 hours before the alert went out and 247 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 2023-07-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 270 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 2023-07-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -43 square meters per square second.19395878Sfc1 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
270 J/kg
Mixed-layer CIN
-111 J/kg
Mixed-layer LCL
1169 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
-43 m²/s²
0-3 km storm-relative helicity
44 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.2

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, 8:36 AM EDTSpecial Weather StatementGSPHaywood24 min
Jul 18, 4:02 PM EDTSpecial Weather StatementGSPBuncombe28 min
Jul 18, 4:04 PM EDTSpecial Weather StatementGSPCaldwell26 min
Jul 18, 4:15 PM EDTSevere Thunderstorm WarningGSPCaldwell45 min
Jul 18, 4:31 PM EDTSevere Thunderstorm WarningGSPBuncombe, Henderson44 min
Jul 18, 5:00 PM EDTSevere Thunderstorm WarningGSPCaldwell45 min
Jul 18, 5:19 PM EDTAreal Flood AdvisoryGSPCaldwell5 hr
Jul 18, 5:26 PM EDTSpecial Weather StatementGSPBurke34 min
Jul 18, 5:43 PM EDTSpecial Weather StatementGSPCaldwell32 min
Jul 18, 6:02 PM EDTSpecial Weather StatementGSPBurke28 min
Jul 18, 6:05 PM EDTSpecial Weather StatementGSPHenderson25 min
Jul 18, 6:16 PM EDTAreal Flood AdvisoryGSPBurke, McDowell6 hr
Jul 18, 6:18 PM EDTSpecial Weather StatementGSPMitchell27 min
Jul 18, 6:29 PM EDTSpecial Weather StatementGSPBurke31 min
Jul 18, 7:23 PM EDTSevere Thunderstorm WarningGSPGreenville, Pickens37 min
Jul 18, 7:55 PM EDTSpecial Weather StatementGSPGreenville35 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 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.