Alert archive / North Carolina / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 176, NWS Greenville-Spartanburg, SC

July 9, 2020Henderson County, Transylvania County, North Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 9, 2020, 5:10 PM EDT for Henderson County, Transylvania County, North Carolina. It was in force for 17 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 9, 2020, 5:10 PM EDT (21:10 UTC)
Expired
Jul 9, 2020, 5:27 PM EDT
In force
17 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Henderson County, NC, Transylvania County, NC

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 9.2 hours before the alert went out and 272 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, Peachtre/Fal Fld, GA at 12:00Z on 2020-07-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 291 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, Peachtre/Fal Fld, GA at 12:00Z on 2020-07-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 2 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
291 J/kg
Mixed-layer CIN
-61 J/kg
Mixed-layer LCL
798 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
2 m²/s²
0-3 km storm-relative helicity
-2 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 9, 2:45 PM EDTSpecial Weather StatementGSPTransylvania30 min
Jul 9, 2:57 PM EDTSpecial Weather StatementGSPGraham33 min
Jul 9, 3:41 PM EDTSpecial Weather StatementGSPJackson34 min
Jul 9, 4:12 PM EDTSpecial Weather StatementGSPMacon33 min
Jul 9, 4:54 PM EDTSpecial Weather StatementGSPHenderson36 min
Jul 9, 6:16 PM EDTSpecial Weather StatementGSPHaywood29 min
Jul 9, 6:26 PM EDTSpecial Weather StatementGSPHaywood34 min
Jul 9, 4:08 PM EDTSpecial Weather StatementGSPOconee37 min
Jul 9, 4:22 PM EDTSevere Thunderstorm WarningGSPAnderson, Oconee, Pickens23 min
Jul 9, 4:49 PM EDTSpecial Weather StatementGSPOconee26 min
Jul 9, 4:38 PM EDTSpecial Weather StatementGSPHart37 min

Nearby

Severe Thunderstorm Warnings in North 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.