Alert archive / South Carolina / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 204, NWS Columbia, SC
NWS Columbia, SC issued this severe thunderstorm warning at Jun 28, 2011, 3:38 PM EDT for Sumter County, South Carolina. It was in force for 22 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 28, 2011, 3:38 PM EDT (19:38 UTC)
- Expired
- Jun 28, 2011, 4:00 PM EDT
- In force
- 22 min
- Issued by
- NWS Columbia, SC
- Area
- Storm-based polygon
County Sumter County, SC
The radar
The Columbia radar (KCAE), 68 km from the middle of the area, began a volume at 19:39 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, 7.6 hours before the alert went out and 118 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.
- Mixed-layer CAPE
- 1022 J/kg
- Mixed-layer CIN
- -85 J/kg
- Mixed-layer LCL
- 1025 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- -77 m²/s²
- 0-3 km storm-relative helicity
- -48 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 28, 2:29 PM EDT, 1 hour 9 minutes earlier.
Area forecast discussion, Jun 28, 2:29 PM EDT, 1 hour 9 minutes before
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</html>Hazardous weather outlook, Jun 28, 4:18 AM EDT, 11 hours 20 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE COLUMBIA SC 418 AM EDT TUE JUN 28 2011 GAZ040-063>065-077-SCZ015-016-018-020>022-025>031-035>038-041-290830- LINCOLN-MCDUFFIE-COLUMBIA-RICHMOND-BURKE-LANCASTER-CHESTERFIELD- MCCORMICK-NEWBERRY-FAIRFIELD-KERSHAW-EDGEFIELD-SALUDA-LEXINGTON- RICHLAND-LEE-AIKEN-SUMTER-BARNWELL-ORANGEBURG-CALHOUN-CLARENDON- BAMBERG- 418 AM EDT TUE JUN 28 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL GEORGIA AND CENTRAL SOUTH CAROLINA. .DAY ONE...TODAY AND TONIGHT. ISOLATED TO SCATTERED THUNDERSTORMS WILL BE POSSIBLE TODAY AND TONIGHT. SOME THUNDERSTORMS COULD BE STRONG TO SEVERE...WITH THE MAIN THREATS BEING DAMAGING WIND GUSTS AND HEAVY RAINFALL. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED AT SOME POINT TODAY OR TONIGHT.
In the hours before
Local storm report, Jun 28, 3:02 PM EDT, 36 minutes before
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</html>The office that day
Everything else NWS Columbia, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 27, 8:19 PM EDT | Special Weather Statement | CAE | Newberry, Saluda | 56 min |
| Jun 28, 2:55 AM EDT | Special Weather Statement | CAE | McCormick | 50 min |
| Jun 28, 3:18 AM EDT | Severe Thunderstorm Warning | CAE | Edgefield, McCormick | 42 min |
| Jun 28, 1:51 PM EDT | Severe Thunderstorm Warning | CAE | Orangeburg | 39 min |
| Jun 28, 2:26 PM EDT | Severe Thunderstorm Warning | CAE | Calhoun, Clarendon, Orangeburg | 49 min |
| Jun 28, 3:05 PM EDT | Severe Thunderstorm Warning | CAE | Lee, Sumter | 40 min |
| Jun 28, 3:19 PM EDT | Severe Thunderstorm Warning | CAE | Bamberg, Barnwell | 41 min |
| Jun 28, 3:30 PM EDT | Severe Thunderstorm Warning | CAE | Chesterfield, Kershaw | 45 min |
| Jun 28, 4:51 PM EDT | Severe Thunderstorm Warning | CAE | Fairfield, Kershaw, Lancaster | 54 min |
| Jun 28, 7:44 PM EDT | Severe Thunderstorm Warning | CAE | Burke, Columbia, McDuffie, Richmond | 61 min |
Nearby
Severe Thunderstorm Warnings in South Carolina, 2011Every severe thunderstorm warning in 2011
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.