Alert archive / South Carolina / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 90, NWS Columbia, SC

August 1, 2013Aiken County, Lexington County, Saluda County, South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at Aug 1, 2013, 8:04 PM EDT for Aiken County, Lexington County, Saluda County, South Carolina. It was in force for 41 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 1, 2013, 8:04 PM EDT (00:04 UTC)
Expired: Aug 1, 2013, 8:45 PM EDT
In force: 41 min
Issued by: NWS Columbia, SC
Area: Storm-based polygon

Counties Aiken County, SC, Lexington County, SC, Saluda County, SC

The radar

The Columbia radar (KCAE), 42 km from the middle of the area, began a volume at 00:05 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 nearest sounding before it

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 0.1 hours before the alert went out and 293 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: 1673 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 1082 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 17 m²/s²
0-3 km storm-relative helicity: 26 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.2

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 Columbia, SC wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 1, 6:01 PM EDT, 2 hours 3 minutes earlier.

Area forecast discussion, Aug 1, 6:01 PM EDT, 2 hours 3 minutes before

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Hazardous weather outlook, Aug 1, 5:23 AM EDT, 14 hours 41 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE COLUMBIA SC
523 AM EDT THU AUG 1 2013

GAZ040-063>065-077-SCZ015-016-018-020>022-025>031-035>038-041-020930-
LINCOLN-MCDUFFIE-COLUMBIA-RICHMOND-BURKE-LANCASTER-CHESTERFIELD-
MCCORMICK-NEWBERRY-FAIRFIELD-KERSHAW-EDGEFIELD-SALUDA-LEXINGTON-
RICHLAND-LEE-AIKEN-SUMTER-BARNWELL-ORANGEBURG-CALHOUN-CLARENDON-
BAMBERG-
523 AM EDT THU AUG 1 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL GEORGIA AND
CENTRAL SOUTH CAROLINA.

.DAY ONE...TODAY AND TONIGHT.

A WEAK COLD FRONT IN THE REGION WILL PROVIDE A FOCUS FOR
THUNDERSTORMS TODAY. A FEW MAY BECOME STRONG AND APPROACH SEVERE
LIMITS.

SOME MINOR FLOODING MAY OCCUR ON SOME OF THE AREA RIVERS TODAY.
FOR THE LATEST RIVER INFORMATION AND FORECASTS...GO TO
WWW.ERH.NOAA.GOV/CAE.

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

MINOR FLOODING ON SOME OF THE AREA RIVERS MAY CONTINUE FRIDAY.
FOR THE LATEST RIVER INFORMATION AND FORECASTS...GO TO
WWW.ERH.NOAA.GOV/CAE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Special weather statement, Aug 1, 3:33 PM EDT, 4 hours 31 minutes before

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Special weather statement, Aug 1, 5:33 PM EDT, 2 hours 31 minutes before

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Special weather statement, Aug 1, 6:08 PM EDT, 1 hour 56 minutes before

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Local storm report, Aug 1, 7:32 PM EDT, 32 minutes before

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Special weather statement, Aug 1, 7:37 PM EDT, 27 minutes before

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Local storm report, Aug 1, 7:58 PM EDT, 6 minutes before

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The office that day

Everything else NWS Columbia, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 1, 8:01 PM EDT	Areal Flood Advisory	CAE	Chesterfield	59 min
Aug 1, 8:28 PM EDT	Flash Flood Warning	CAE	Aiken, Lexington	62 min
Aug 1, 8:39 PM EDT	Flash Flood Warning	CAE	Chesterfield	51 min
Aug 1, 9:51 PM EDT	Areal Flood Advisory	CAE	Edgefield, McCormick, Saluda	114 min
Aug 1, 10:36 PM EDT	Special Weather Statement	CAE	Edgefield, McCormick	54 min

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.