Alert archive / South Carolina / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 296, NWS Columbia, SC
NWS Columbia, SC issued this severe thunderstorm warning at Nov 16, 2011, 6:32 PM EST for 5 counties in South Carolina. It was in force for 58 min. 3 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Nov 16, 2011, 6:32 PM EST (23:32 UTC)
- Expired
- Nov 16, 2011, 7:30 PM EST
- In force
- 58 min
- Issued by
- NWS Columbia, SC
- Area
- Storm-based polygon
Counties Bamberg County, SC, Barnwell County, SC, Calhoun County, SC, Lexington County, SC, Orangeburg County, SC
The radar
The Charleston,SC radar (KCLX), 62 km from the middle of the area, began a volume at 23:31 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Nov 16, 6:43 PM EST | TSTM WND DMG | Barnwell, SC | SHERIFF OFFICE REPORTED TREES DOWN IN THE CITIES OF BARNWELL...HILDA...AND BLACKVILLE. |
| Nov 16, 6:52 PM EST | TSTM WND DMG | Olar, SC | COUNTY SHERIFF REPORTS TREES DOWN NEAR OLAR. |
| Nov 16, 7:40 PM EST | TSTM WND DMG | Cameron, SC | TREES DOWN AT OLD RIVER ROAD AND COVESIDE CIRCLE |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Nov 16, 1:35 PM EST | Tornado Watch | SPC | 7 hr |
| Nov 16, 4:30 PM EST | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Charleston AFB, SC (KCHS), launched 12:00Z, 11.5 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.
- Mixed-layer CAPE
- 347 J/kg
- Mixed-layer CIN
- -68 J/kg
- Mixed-layer LCL
- 485 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 127 m²/s²
- 0-3 km storm-relative helicity
- 137 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.4
The text
As transmitted, in the capitals the NWS used until 2016.
339
WUUS52 KCAE 162332
SVRCAE
SCC009-011-017-063-075-170030-
/O.NEW.KCAE.SV.W.0296.111116T2332Z-111117T0030Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
632 PM EST WED NOV 16 2011
THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
BAMBERG COUNTY IN CENTRAL SOUTH CAROLINA
SOUTHEASTERN LEXINGTON COUNTY IN CENTRAL SOUTH CAROLINA
CALHOUN COUNTY IN CENTRAL SOUTH CAROLINA
ORANGEBURG COUNTY IN CENTRAL SOUTH CAROLINA
EASTERN BARNWELL COUNTY IN CENTRAL SOUTH CAROLINA
* UNTIL 730 PM EST
* AT 631 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM. THIS STORM WAS LOCATED 9608 MILES WEST OF
BAMBERG...OR 9609 MILES WEST OF ALLENDALE...AND MOVING NORTHEAST AT
55 MPH.
* SOME COMMUNITIES IN THE WARNING AREA INCLUDE ST. MATTHEWS...
ORANGEBURG...ELLOREE...DENMARK...BROOKDALE...BRANCHVILLE...
BOWMAN...BLACKVILLE...BARNWELL AND BAMBERG
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REPORT LARGE HAIL...DAMAGING WINDS OR FLOODING TO YOUR COUNTY
SHERIFF...OR CALL THE NATIONAL WEATHER SERVICE...TOLL FREE 1 877 6 3
3...6 7 7 2.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM EST WEDNESDAY EVENING
FOR EAST CENTRAL GEORGIA AND CENTRAL SOUTH CAROLINA. A TORNADO WATCH
ALSO REMAINS IN EFFECT UNTIL MIDNIGHT EST THURSDAY MORNING FOR
CENTRAL SOUTH CAROLINA.
&&
LAT...LON 3312 8120 3310 8137 3316 8155 3388 8103
3339 8030 3330 8049 3333 8051 3313 8087
3311 8089 3309 8094 3310 8094 3303 8106
3303 8109
TIME...MOT...LOC 2332Z 245DEG 47KT -2147483648 -2147483648
$$
SJN1 follow-up statement
143
WWUS52 KCAE 170002
SVSCAE
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA SC
702 PM EST WED NOV 16 2011
SCC009-011-017-063-075-170030-
/O.CON.KCAE.SV.W.0296.000000T0000Z-111117T0030Z/
BAMBERG SC-LEXINGTON SC-CALHOUN SC-ORANGEBURG SC-BARNWELL SC-
702 PM EST WED NOV 16 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EST
FOR BARNWELL...ORANGEBURG...CALHOUN...LEXINGTON AND BAMBERG
COUNTIES...
AT 656 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF STORMS FROM NEAR ST. MATTHEWS TO OLAR... MOVING
NORTHEAST AT 55 MPH.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
ORANGEBURG...OLAR...EUTAWVILLE...ELLOREE...DENMARK...COPE...
CAMERON...BROOKDALE. ..BRANCHVILLE AND BOWMAN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
WIND GUSTS OF 60 MPH MAY OCCUR WITH THESE STORMS TAKING DOWN SOME
TREES AND POWERLINES.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM EST WEDNESDAY EVENING
FOR EAST CENTRAL GEORGIA AND CENTRAL SOUTH CAROLINA. A TORNADO WATCH
ALSO REMAINS IN EFFECT UNTIL MIDNIGHT EST THURSDAY MORNING FOR
CENTRAL SOUTH CAROLINA.
REPORT LARGE HAIL...DAMAGING WINDS OR FLOODING TO YOUR COUNTY
SHERIFF...OR CALL THE NATIONAL WEATHER SERVICE TOLL FREE AT 1...8 7
7...6 3 3...6 7 7 2.
&&
LAT...LON 3312 8120 3310 8137 3316 8155 3388 8103
3339 8030 3330 8049 3333 8051 3313 8087
3311 8089 3309 8094 3310 8094 3303 8106
3303 8109
TIME...MOT...LOC 2359Z 245DEG 47KT 6376 6340
$$The office that day
Everything else NWS Columbia, SC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 16, 3:48 AM EST | Lake Wind Advisory | CAE | Aiken, Bamberg, Barnwell, Calhoun, Chesterfield, Clarendon and 10 more | 20 hr |
| Nov 16, 4:50 PM EST | Severe Thunderstorm Warning | CAE | Aiken | 55 min |
| Nov 16, 5:36 PM EST | Tornado Warning | CAE | Lancaster | 33 min |
| Nov 16, 5:49 PM EST | Tornado Warning | CAE | Aiken, Barnwell | 41 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.