Alert archive / South Carolina / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 127, NWS Columbia, SC

June 30, 2007Orangeburg County, South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at Jun 30, 2007, 3:49 PM EDT for Orangeburg 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
Jun 30, 2007, 3:49 PM EDT (19:49 UTC)
Expired
Jun 30, 2007, 4:30 PM EDT
In force
41 min
Issued by
NWS Columbia, SC
Area
Counties, with a storm outline in the text

County Orangeburg County, SC

The radar

The Columbia radar (KCAE), 64 km from the middle of the area, began a volume at 19:52 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
Jun 30, 2:46 PM EDTSevere Thunderstorm WatchSPC5 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 7.8 hours before the alert went out and 96 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 2007-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1065 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 2007-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -31 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
1065 J/kg
Mixed-layer CIN
-27 J/kg
Mixed-layer LCL
728 m above ground
0-6 km bulk shear
5 kt
0-1 km storm-relative helicity
-31 m²/s²
0-3 km storm-relative helicity
0 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 Columbia, SC wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 30, 3:31 PM EDT, 18 minutes earlier.

Area forecast discussion, Jun 30, 3:31 PM EDT, 18 minutes before
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Hazardous weather outlook, Jun 30, 5:25 AM EDT, 10 hours 24 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE COLUMBIA SC
525 AM EDT SAT JUN 30 2007

GAZ040-063>065-077-SCZ015-016-018-020>022-025>031-035>038-041-011000-
LINCOLN-MCDUFFIE-COLUMBIA-RICHMOND-BURKE-LANCASTER-CHESTERFIELD-
MCCORMICK-NEWBERRY-FAIRFIELD-KERSHAW-EDGEFIELD-SALUDA-LEXINGTON-
RICHLAND-LEE-AIKEN-SUMTER-BARNWELL-ORANGEBURG-CALHOUN-CLARENDON-
BAMBERG-
525 AM EDT SAT JUN 30 2007

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

.DAY ONE...TODAY AND TONIGHT

A COLD FRONT ACROSS VIRGINIA INTO TENNESSEE WILL MOVE SLOWLY SOUTH
TODAY AND APPROACH SOUTH CAROLINA THIS AFTERNOON. NUMEROUS
THUNDERSTORMS ARE EXPECTED TO DEVELOP AHEAD OF THE FRONT. A FEW
SEVERE STORMS ARE POSSIBLE THIS AFTERNOON AND EVENING. DAMAGING
WINDS WILL BE THE MAIN THREAT FROM THE STRONGER STORMS ALONG WITH
VERY HEAVY RAIN. LOCALIZED FLOODING THIS AFTERNOON INTO TONIGHT WILL
BE A CONCERN.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH THURSDAY

THE COLD FRONT WILL CONTINUE TO PUSH SLOWLY ACROSS THE AREA SUNDAY
THEN MOVE SOUTH OF THE AREA BY MONDAY. SCATTERED THUNDERSTORMS ARE
EXPECTED DURING THE DAY. ONCE AGAIN...THUNDERSTORMS WILL PRODUCE
LOCALLY HEAVY RAIN.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 30, 3:38 PM EDTSevere Thunderstorm WarningCAECalhoun29 min
Jun 30, 5:32 PM EDTSevere Thunderstorm WarningCAENewberry58 min
Jun 30, 6:32 PM EDTSevere Thunderstorm WarningCAEEdgefield43 min
Jun 30, 3:29 PM EDTSevere Thunderstorm WarningCAEBurke30 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2007Every severe thunderstorm warning in 2007

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.