Alert archive / South Carolina / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 57, NWS Greenville-Spartanburg, SC

May 15, 2010Greenville County, Pickens County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at May 15, 2010, 2:56 PM EDT for Greenville County, Pickens County, South Carolina. It was in force for 64 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
May 15, 2010, 2:56 PM EDT (18:56 UTC)
Expired
May 15, 2010, 4:00 PM EDT
In force
64 min
Issued by
NWS Greenville-Spartanburg, SC
Area
Storm-based polygon

Counties Greenville County, SC, Pickens County, SC

The radar

The Greer radar (KGSP), 30 km from the middle of the area, began a volume at 18:58 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 6.9 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, Peachtre/Fal Fld, GA at 12:00Z on 2010-05-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1200 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 2010-05-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 14 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
1200 J/kg
Mixed-layer CIN
-41 J/kg
Mixed-layer LCL
718 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
14 m²/s²
0-3 km storm-relative helicity
45 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Greenville-Spartanburg, SC wrote its last area forecast discussion before this severe thunderstorm warning went out at May 15, 1:55 PM EDT, 1 hour 1 minute earlier.

Area forecast discussion, May 15, 1:55 PM EDT, 1 hour 1 minute before
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Hazardous weather outlook, May 15, 2:47 PM EDT, 9 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
247 PM EDT SAT MAY 15 2010

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-161900-
RABUN-HABERSHAM-STEPHENS-FRANKLIN-HART-ELBERT-AVERY-ALEXANDER-
IREDELL-DAVIE-MADISON-YANCEY-MITCHELL-SWAIN-HAYWOOD-BUNCOMBE-CATAWBA-
ROWAN-GRAHAM-NORTHERN JACKSON-MACON-SOUTHERN JACKSON-TRANSYLVANIA-
HENDERSON-CLEVELAND-LINCOLN-GASTON-MECKLENBURG-CABARRUS-UNION NC-
CALDWELL MOUNTAINS-GREATER CALDWELL-BURKE MOUNTAINS-GREATER BURKE-
MCDOWELL MOUNTAINS-EASTERN MCDOWELL-RUTHERFORD MOUNTAINS-
GREATER RUTHERFORD-POLK MOUNTAINS-EASTERN POLK-OCONEE MOUNTAINS-
PICKENS MOUNTAINS-GREENVILLE MOUNTAINS-GREATER OCONEE-
GREATER PICKENS-GREATER GREENVILLE-SPARTANBURG-CHEROKEE-YORK-
ANDERSON-ABBEVILLE-LAURENS-UNION SC-CHESTER-GREENWOOD-
247 PM EDT SAT MAY 15 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST GEORGIA...PIEDMONT
NORTH CAROLINA...WESTERN NORTH CAROLINA AND UPSTATE SOUTH CAROLINA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

THUNDERSTORMS WILL INCREASE THROUGH MID EVENING AS A COLD FRONT
MOVES IN FROM THE NORTH. SOME STORMS WILL BECOME SEVERE WITH DAMAGING
WIND AND LARGE HAIL. IN ADDITION...SLOW MOVING STORMS COULD
PRODUCE AREAS OF EXCESSIVE RAINFALL.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

THUNDERSTORMS ARE EXPECTED AGAIN SUNDAY WITH THE APPROACH OF A LOW
PRESSURE SYSTEM. A FEW OF THESE STORMS COULD ALSO BECOME SEVERE WITH
DAMAGING WIND AND LARGE HAIL. SEVERAL OF THE STORMS WILL PRODUCE
VERY HEAVY RAINFALL...POSSIBLY RESULTING IN AREAS OF FLASH FLOODING.

.SPOTTER INFORMATION STATEMENT...

NONE.

NED

In the hours before

Local storm report, May 15, 2:14 PM EDT, 42 minutes before
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Local storm report, May 15, 2:29 PM EDT, 27 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
229 PM EDT SAT MAY 15 2010

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0206 PM     HAIL             1 E HIGHLANDS           35.05N 83.18W
05/15/2010  E1.00 INCH       MACON              NC   FIRE DEPT/RESCUE

&&

KRENTZ

The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 14, 8:09 PM EDTSevere Thunderstorm WarningGSPBuncombe, Henderson, McDowell, Rutherford66 min
May 14, 8:29 PM EDTSevere Thunderstorm WarningGSPAlexander, Burke, Caldwell, Catawba, Davie, Iredell and 1 more76 min
May 14, 8:42 PM EDTAreal Flood AdvisoryGSPBuncombe, Burke, Caldwell, Henderson, McDowell, Rutherford116 min
May 14, 9:53 PM EDTSpecial Weather StatementGSPCatawba, Cleveland, Davie, Iredell, Lincoln, Polk and 1 more67 min
May 14, 10:34 PM EDTSpecial Weather StatementGSPCabarrus, Cleveland, Davie, Gaston, Lincoln, Mecklenburg and 3 more41 min
May 14, 11:01 PM EDTSpecial Weather StatementGSPCabarrus, Gaston, Mecklenburg, Rowan44 min
May 15, 1:19 PM EDTSevere Thunderstorm WarningGSPBuncombe, Haywood, Henderson, Transylvania56 min
May 15, 1:50 PM EDTSevere Thunderstorm WarningGSPJackson, Macon55 min
May 15, 2:17 PM EDTSevere Thunderstorm WarningGSPTransylvania58 min
May 15, 3:06 PM EDTSevere Thunderstorm WarningGSPBuncombe, Haywood, Madison42 min
May 15, 3:13 PM EDTSevere Thunderstorm WarningGSPTransylvania32 min
May 15, 3:38 PM EDTSevere Thunderstorm WarningGSPMacon67 min
May 15, 5:00 PM EDTSpecial Weather StatementGSPAvery45 min
May 15, 5:43 PM EDTSevere Thunderstorm WarningGSPCaldwell62 min
May 15, 5:55 PM EDTSpecial Weather StatementGSPMecklenburg50 min
May 15, 6:16 PM EDTSevere Thunderstorm WarningGSPCabarrus, Mecklenburg37 min
May 15, 6:52 PM EDTSevere Thunderstorm WarningGSPCabarrus, Mecklenburg23 min
May 15, 3:42 PM EDTSevere Thunderstorm WarningGSPCherokee, Spartanburg63 min
May 15, 3:53 PM EDTSevere Thunderstorm WarningGSPGreenville67 min
May 15, 4:50 PM EDTSevere Thunderstorm WarningGSPSpartanburg55 min
May 15, 4:53 PM EDTSevere Thunderstorm WarningGSPOconee32 min
May 15, 4:56 PM EDTSevere Thunderstorm WarningGSPGreenville, Spartanburg64 min
May 15, 5:44 PM EDTSevere Thunderstorm WarningGSPSpartanburg33 min
May 15, 3:33 PM EDTSpecial Weather StatementGSPRabun42 min

Nearby

Severe Thunderstorm Warnings in South 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.