Alert archive / South Carolina / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 347, NWS Greenville-Spartanburg, SC

July 31, 2010Jackson County, Transylvania County, North Carolina; Greenville County, Oconee County, Pickens County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Jul 31, 2010, 2:04 PM EDT for Jackson County, Transylvania County, North Carolina; Greenville County, Oconee County, Pickens County, South Carolina. It was in force for 56 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 31, 2010, 2:04 PM EDT (18:04 UTC)
Expired
Jul 31, 2010, 3:00 PM EDT
In force
56 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon

Counties Jackson County, NC, Transylvania County, NC, Greenville County, SC, Oconee County, SC, Pickens County, SC

The radar

The Greer radar (KGSP), 56 km from the middle of the area, began a volume at 18:05 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.

IssuedProductOfficeLasted
Jul 31, 1:31 PM EDTSevere Thunderstorm WatchSPC8 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 6.1 hours before the alert went out and 239 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 2010-07-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 148 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 2010-07-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -37 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
148 J/kg
Mixed-layer CIN
-132 J/kg
Mixed-layer LCL
1397 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
-37 m²/s²
0-3 km storm-relative helicity
-4 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 31, 1:11 PM EDTSpecial Weather StatementGSPMacon64 min
Jul 31, 1:28 PM EDTSevere Thunderstorm WarningGSPJackson, Macon, Swain62 min
Jul 31, 6:11 PM EDTSpecial Weather StatementGSPMecklenburg34 min
Jul 31, 7:30 AM EDTSpecial Weather StatementGSPGreenwood45 min
Jul 31, 8:27 AM EDTSpecial Weather StatementGSPGreenwood48 min
Jul 31, 8:42 AM EDTAreal Flood AdvisoryGSPGreenwood63 min
Jul 31, 9:50 AM EDTSpecial Weather StatementGSPLaurens40 min
Jul 31, 2:21 PM EDTSpecial Weather StatementGSPYork24 min
Jul 31, 3:02 PM EDTSevere Thunderstorm WarningGSPGreenwood26 min
Jul 31, 3:23 PM EDTSpecial Weather StatementGSPYork37 min
Jul 31, 3:25 PM EDTSpecial Weather StatementGSPHabersham50 min
Jul 31, 4:39 PM EDTSpecial Weather StatementGSPHabersham36 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2010Severe Thunderstorm Warnings in North Carolina, 2010Every severe thunderstorm warning in 2010

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.