Alert archive / North Carolina / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 35, NWS Greenville-Spartanburg, SC

February 13, 20204 counties in North Carolina; York County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Feb 13, 2020, 9:47 AM EST for 4 counties in North Carolina; York County, South Carolina. It was in force for 43 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
Feb 13, 2020, 9:47 AM EST (14:47 UTC)
Expired
Feb 13, 2020, 10:30 AM EST
In force
43 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Cabarrus County, NC, Gaston County, NC, Mecklenburg County, NC, Union County, NC, York County, SC

The radar

The Greer radar (KGSP), 128 km from the middle of the area, began a volume at 14:47 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

Charleston AFB, SC (KCHS), launched 12:00Z, 2.8 hours before the alert went out and 265 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, Charleston AFB, SC at 12:00Z on 2020-02-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 29 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, Charleston AFB, SC at 12:00Z on 2020-02-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 250 square meters per square second.1939587897Sfc1 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
29 J/kg
Mixed-layer CIN
-86 J/kg
Mixed-layer LCL
758 m above ground
0-6 km bulk shear
67 kt
0-1 km storm-relative helicity
250 m²/s²
0-3 km storm-relative helicity
231 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
Feb 12, 10:15 PM ESTSpecial Weather StatementGSPGraham45 min
Feb 12, 11:03 PM ESTSpecial Weather StatementGSPAvery, Madison, Mitchell, Yancey57 min
Feb 13, 12:04 AM ESTSpecial Weather StatementGSPAvery, Mitchell41 min
Feb 13, 2:03 AM ESTAreal Flood AdvisoryGSPGraham, Swain11 hr
Feb 13, 4:22 AM ESTAreal Flood AdvisoryGSPGaston, Mecklenburg5 days
Feb 13, 7:03 AM ESTSpecial Weather StatementGSPCleveland, Gaston, Lincoln, Rutherford42 min
Feb 13, 7:28 AM ESTSevere Thunderstorm WarningGSPHenderson, Transylvania32 min
Feb 13, 7:44 AM ESTSpecial Weather StatementGSPGaston, Lincoln31 min
Feb 13, 8:01 AM ESTSpecial Weather StatementGSPPolk, Rutherford29 min
Feb 13, 8:03 AM ESTAreal Flood AdvisoryGSPHaywood, Jackson6 hr
Feb 13, 8:29 AM ESTSpecial Weather StatementGSPCatawba, Cleveland, Lincoln31 min
Feb 13, 8:54 AM ESTSpecial Weather StatementGSPCatawba, Cleveland, Gaston, Iredell, Lincoln36 min
Feb 13, 9:00 AM ESTAreal Flood AdvisoryGSPMacon, Swain10 hr
Feb 13, 9:13 AM ESTAreal Flood AdvisoryGSPHenderson6 hr
Feb 13, 9:26 AM ESTSpecial Weather StatementGSPCabarrus, Mecklenburg, Rowan34 min
Feb 13, 9:46 AM ESTRiver Flood AdvisoryGSPBuncombe, Henderson50 hr
Feb 13, 9:55 AM ESTRiver Flood AdvisoryGSPSwain11 hr
Feb 13, 10:26 AM ESTSpecial Weather StatementGSPUnion49 min
Feb 13, 10:37 AM ESTRiver Flood WarningGSPHenderson, Transylvania59 hr
Feb 13, 5:45 AM ESTSpecial Weather StatementGSPPickens45 min
Feb 13, 6:46 AM ESTSevere Thunderstorm WarningGSPOconee44 min
Feb 13, 7:52 AM ESTSevere Thunderstorm WarningGSPAnderson, Oconee, Pickens38 min
Feb 13, 8:24 AM ESTSevere Thunderstorm WarningGSPAbbeville, Anderson, Greenville, Greenwood, Laurens, Spartanburg51 min
Feb 13, 8:57 AM ESTSpecial Weather StatementGSPCherokee, Spartanburg33 min
Feb 13, 9:02 AM ESTSpecial Weather StatementGSPAbbeville, Greenwood, Laurens, Union28 min
Feb 13, 9:24 AM ESTSpecial Weather StatementGSPUnion, York36 min
Feb 13, 9:28 AM ESTSpecial Weather StatementGSPGreenwood32 min
Feb 13, 9:58 AM ESTSpecial Weather StatementGSPGreenwood32 min
Feb 13, 10:10 AM ESTSpecial Weather StatementGSPChester20 min
Feb 13, 12:44 PM ESTAreal Flood AdvisoryGSPGreenville, Spartanburg12 hr
Feb 13, 6:02 AM ESTAreal Flood AdvisoryGSPHabersham, Rabun12 hr
Feb 13, 6:30 AM ESTSpecial Weather StatementGSPHabersham, Rabun30 min
Feb 13, 7:19 AM ESTSpecial Weather StatementGSPFranklin, Hart, Stephens41 min
Feb 13, 8:35 AM ESTSpecial Weather StatementGSPElbert40 min

Nearby

Severe Thunderstorm Warnings in North Carolina, 2020Severe 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.