Alert archive / South Carolina / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 310, NWS Greenville-Spartanburg, SC

August 22, 2013Greenwood County, Laurens County, South Carolina

NWS Greenville-Spartanburg, SC issued this severe thunderstorm warning at Aug 22, 2013, 4:27 PM EDT for Greenwood County, Laurens County, South Carolina. It was in force for 48 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: Aug 22, 2013, 4:27 PM EDT (20:27 UTC)
Expired: Aug 22, 2013, 5:15 PM EDT
In force: 48 min
Issued by: NWS Greenville-Spartanburg, SC
Area: Storm-based polygon

Counties Greenwood County, SC, Laurens County, SC

The radar

The Greer radar (KGSP), 64 km from the middle of the area, began a volume at 20:29 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, 8.5 hours before the alert went out and 248 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2035 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 674 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 13 m²/s²
0-3 km storm-relative helicity: 3 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 Aug 22, 2:49 PM EDT, 1 hour 38 minutes earlier.

Area forecast discussion, Aug 22, 2:49 PM EDT, 1 hour 38 minutes before

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Hazardous weather outlook, Aug 22, 3:25 PM EDT, 1 hour 2 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
325 PM EDT THU AUG 22 2013

GAZ010-017-018-026-028-029-NCZ033-035>037-048>053-056>059-062>065-
068>072-082-501>510-SCZ001>014-019-231930-
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-
325 PM EDT THU AUG 22 2013

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP ACROSS
THE REGION INTO THIS EVENING. THE MAIN THREATS WILL BE TORRENTIAL
DOWNPOURS AND CLOUD TO GROUND LIGHTNING. HOWEVER DAMAGING WINDS
CANNOT BE RULED OUT WITH THE STRONGEST STORMS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

A COLD FRONT WILL PUSH INTO THE AREA FROM THE NORTH FRIDAY
AFTERNOON INTO FRIDAY NIGHT. SCATTERED THUNDERSTORMS ARE EXPECTED
ALONG AND AHEAD OF THE FRONT...WITH A FEW POSSIBLY PRODUCING LARGE
HAIL AND DAMAGING WIND GUSTS. ISOLATED FLASH FLOODING WILL BE
POSSIBLE WITH SOME OF THE HEAVIER DOWNPOURS.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTERS ARE REQUESTED TO FORWARD ANY REPORTS OF LARGE
HAIL...DAMAGING WINDS...TORNADOES OR FLASH FLOODING TO OUR OFFICE.

07

In the hours before

Special weather statement, Aug 22, 12:54 PM EDT, 3 hours 33 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
1254 PM EDT THU AUG 22 2013

SCZ001-221730-
OCONEE MOUNTAINS-
1254 PM EDT THU AUG 22 2013

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN OCONEE COUNTY
THROUGH 130 PM EDT...

AT 1249 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR LAKE JOCASSEE...OR 16 MILES NORTH OF
WALHALLA...MOVING SOUTHEAST AT 5 MPH.

SMALL HAIL...AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS
STORM.

CLOUD TO GROUND LIGHTNING AND GUSTY WINDS WILL CREATE DANGEROUS
BOATING CONDITIONS ON LAKE JOCASSEE. MOVE TO SHORE IMMEDIATELY.

LAT...LON 3503 8299 3501 8292 3499 8294 3497 8292
      3494 8290 3487 8296 3499 8304

LANE

Special weather statement, Aug 22, 2:14 PM EDT, 2 hours 13 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
214 PM EDT THU AUG 22 2013

GAZ017-018-026-221900-
FRANKLIN-HABERSHAM-STEPHENS-
214 PM EDT THU AUG 22 2013

...A STRONG THUNDERSTORM WILL AFFECT SOUTHERN HABERSHAM...
SOUTHWESTERN STEPHENS AND WESTERN FRANKLIN COUNTIES THROUGH 300 PM
EDT...

AT 211 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR MOUNT AIRY...OR 8 MILES SOUTH OF
CLARKESVILLE. THIS STORM WAS NEARLY STATIONARY.

SMALL HAIL...WIND GUSTS UP TO 40 MPH AND TORRENTIAL RAIN ARE EXPECTED
WITH THIS STORM.

LAT...LON 3458 8349 3450 8329 3437 8337 3438 8339
      3442 8339 3446 8340 3448 8347 3448 8351
      3449 8354

LG

Local storm report, Aug 22, 3:09 PM EDT, 1 hour 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
309 PM EDT THU AUG 22 2013

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

0240 PM     TSTM WND DMG     1 SE WALHALLA           34.76N 83.04W
08/22/2013                   OCONEE             SC   PUBLIC

            TWO LARGE TREES BROKEN OFF ABOVE GROUND IN WEST

            UNION...WITH A THIRD UPROOTED. TIME ESTIMATED FROM RADAR.

&&

WIMBERLEY

Special weather statement, Aug 22, 3:30 PM EDT, 57 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
330 PM EDT THU AUG 22 2013

SCZ006-007-012-222015-
GREATER GREENVILLE-LAURENS-SPARTANBURG-
330 PM EDT THU AUG 22 2013

...STRONG THUNDERSTORMS WILL AFFECT EASTERN GREENVILLE...NORTHWESTERN
LAURENS AND SOUTHWESTERN SPARTANBURG COUNTIES THROUGH 415 PM EDT...

AT 324 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM SOUTH GREENVILLE TO
EAST OF FIVE FORKS...MOVING SOUTHEAST AT 15 MPH.

THESE STORMS WILL IMPACT LOCATIONS NEAR...
  FIVE FORKS...
  SIMPSONVILLE...
  FOUNTAIN INN...
  WOODRUFF...

SMALL HAIL...WIND GUSTS UP TO 40 MPH AND TORRENTIAL RAIN ARE EXPECTED
WITH THESE STORMS.

THE COMBINATION OF GUSTY WINDS AND WET SOIL CONDITIONS WILL CAUSE
SCATTERED TREES AND POWER LINES TO FALL. SEEK SHELTER INSIDER AN
INTERIOR ROOM.

HEAVY RAINS MAY FLOOD AREAS WITH POOR DRAINAGE...SUCH AS DITCHES AND
UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS. WATER
LEVELS OF SMALL STREAMS AND RIVERS MAY ALSO RISE RAPIDLY. SEEK HIGHER
GROUND IF THREATENED BY FLOOD WATERS.

LAT...LON 3467 8194 3456 8232 3485 8245 3492 8218

WIMBERLEY

Special weather statement, Aug 22, 4:16 PM EDT, 11 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
416 PM EDT THU AUG 22 2013

SCZ007-012-013-222100-
LAURENS-SPARTANBURG-UNION-
416 PM EDT THU AUG 22 2013

...STRONG THUNDERSTORMS WILL AFFECT LAURENS...SOUTHEASTERN
SPARTANBURG AND WESTERN UNION COUNTIES THROUGH 500 PM EDT...

AT 412 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 4 MILES SOUTHEAST OF
MOORE...TO 3 MILES NORTHEAST OF GRAY COURT...TO FORK SHOALS...MOVING
SOUTHEAST AT 20 MPH.

THESE STORMS WILL IMPACT LOCATIONS NEAR...
  GRAY COURT...
  ENOREE...
  HICKORY TAVERN...
  BOYD MILL POND...
  LAURENS...
  CLINTON...

SMALL HAIL...WIND GUSTS UP TO 35 MPH AND TORRENTIAL RAIN ARE EXPECTED
WITH THESE STORMS.

THE COMBINATION OF GUSTY WINDS AND WET SOIL CONDITIONS MAY CAUSE A
FEW TREES AND POWER LINES TO FALL. SEEK SHELTER INSIDER AN INTERIOR
ROOM.

HEAVY RAINS MAY FLOOD AREAS WITH POOR DRAINAGE...SUCH AS DITCHES AND
UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS. WATER
LEVELS OF SMALL STREAMS AND RIVERS MAY ALSO RISE RAPIDLY. SEEK HIGHER
GROUND IF THREATENED BY FLOOD WATERS.

LAT...LON 3450 8229 3454 8224 3459 8224 3468 8220
      3469 8216 3490 8196 3466 8154 3445 8173
      3438 8207

WIMBERLEY

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 22, 1:58 AM EDT	Dense Fog Advisory	GSP	Alexander, Burke, Caldwell, Catawba, Cleveland, Lincoln and 3 more	7 hr
Aug 22, 12:54 PM EDT	Special Weather Statement	GSP	Pickens	36 min
Aug 22, 1:28 PM EDT	Areal Flood Advisory	GSP	Oconee, Pickens	92 min
Aug 22, 2:38 PM EDT	Severe Thunderstorm Warning	GSP	Oconee, Pickens	52 min
Aug 22, 3:30 PM EDT	Special Weather Statement	GSP	Greenville	45 min
Aug 22, 4:16 PM EDT	Special Weather Statement	GSP	Laurens, Union	44 min
Aug 22, 5:06 PM EDT	Special Weather Statement	GSP	Laurens	39 min
Aug 22, 12:52 PM EDT	Areal Flood Advisory	GSP	Rabun	2 hr
Aug 22, 2:11 PM EDT	Areal Flood Advisory	GSP	Stephens	79 min
Aug 22, 2:14 PM EDT	Special Weather Statement	GSP	Stephens	46 min
Aug 22, 2:51 PM EDT	Areal Flood Advisory	GSP	Habersham, Stephens	2 hr

Nearby

Severe Thunderstorm Warnings in South Carolina, 2013 Every severe thunderstorm warning in 2013

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.