Alert archive / South Carolina / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 252, NWS Columbia, SC

August 14, 20117 counties in South Carolina

NWS Columbia, SC issued this severe thunderstorm warning at Aug 14, 2011, 4:32 PM EDT for 7 counties in South Carolina. It was in force for 58 min. 2 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
Aug 14, 2011, 4:32 PM EDT (20:32 UTC)
Expired
Aug 14, 2011, 5:30 PM EDT
In force
58 min
Issued by
NWS Columbia, SC
Area
Storm-based polygon

Counties Bamberg County, SC, Calhoun County, SC, Clarendon County, SC, Lee County, SC, Orangeburg County, SC, Richland County, SC, Sumter County, SC

The radar

The Columbia radar (KCAE), 74 km from the middle of the area, began a volume at 20:34 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

TimeReportWhereRemark
Aug 14, 5:12 PM EDTTSTM WND DMG3 Sw Turbeville, SCTREES DOWN ON PUDDING SWAMP RD. TIME ESTIMATED BY RADAR.
Aug 14, 5:15 PM EDTTSTM WND DMG7 Ssw Summerton, SCTREES DOWN ON ST HWY 14

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.

IssuedProductOfficeLasted
Aug 14, 2:40 PM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 8.5 hours before the alert went out and 97 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 2011-08-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.1000850700500300200100-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Charleston AFB, SC at 12:00Z on 2011-08-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -5 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
6472 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
-5 m²/s²
0-3 km storm-relative helicity
91 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

222 
WUUS52 KCAE 142032
SVRCAE
SCC009-017-027-061-075-079-085-142130-
/O.NEW.KCAE.SV.W.0252.110814T2032Z-110814T2130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
432 PM EDT SUN AUG 14 2011

THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN BAMBERG COUNTY IN CENTRAL SOUTH CAROLINA
  SOUTHERN LEE COUNTY IN CENTRAL SOUTH CAROLINA
  SOUTHEASTERN RICHLAND COUNTY IN CENTRAL SOUTH CAROLINA
  CALHOUN COUNTY IN CENTRAL SOUTH CAROLINA
  SUMTER COUNTY IN CENTRAL SOUTH CAROLINA
  CLARENDON COUNTY IN CENTRAL SOUTH CAROLINA
  CENTRAL ORANGEBURG COUNTY IN CENTRAL SOUTH CAROLINA

* UNTIL 530 PM EDT

* AT 429 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
  EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
  FROM 9 MILES NORTH OF OAKLAND TO DENMARK...OR ALONG A LINE
  EXTENDING FROM 12 MILES NORTH OF SUMTER TO DENMARK...AND MOVING
  EAST AT 20 MPH.

* SOME COMMUNITIES IN THE WARNING AREA INCLUDE 
SUMTER...SUMMERTON...  ST. MATTHEWS...SOUTH SUMTER...ORANGEBURG...  
MANNING...ELLOREE...EASTOVER...DENMARK...BROOKDALE...BRANCHVILLE...  
BOWMAN...BAMBERG AND OAKLAND

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 SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT SUNDAY
EVENING FOR EAST CENTRAL GEORGIA AND CENTRAL SOUTH CAROLINA.

&&

LAT...LON 3398 7990 3394 7997 3392 7996 3332 8050
      3333 8051 3323 8069 3332 8122 3335 8122
      3417 8047 3411 8009 3400 7990
TIME...MOT...LOC 2032Z 282DEG 19KT 3411 8043 3338 8107

$$

HC
1 follow-up statement
625 
WWUS52 KCAE 142112
SVSCAE

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE COLUMBIA SC
512 PM EDT SUN AUG 14 2011

SCC061-079-142122-
/O.CAN.KCAE.SV.W.0252.000000T0000Z-110814T2130Z/
LEE SC-RICHLAND SC-
512 PM EDT SUN AUG 14 2011

...THE SEVERE THUNDERSTORM WARNING FOR RICHLAND AND LEE COUNTIES IS
CANCELLED...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT SUNDAY
EVENING FOR EAST CENTRAL GEORGIA AND 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 3332 8050 3323 8069 3332 8122 3335 8122
      3362 8097 3371 8066 3397 8019 3396 8017
      3401 8007 3401 8003 3405 8000 3400 7990
TIME...MOT...LOC 2112Z 282DEG 19KT 3399 8000 3334 8082

$$

SCC009-017-027-075-085-142130-
/O.CON.KCAE.SV.W.0252.000000T0000Z-110814T2130Z/
BAMBERG SC-CALHOUN SC-SUMTER SC-CLARENDON SC-ORANGEBURG SC-
512 PM EDT SUN AUG 14 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR ORANGEBURG...CLARENDON...SUMTER...CALHOUN AND BAMBERG COUNTIES...

AT 507 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 7 MILES NORTH OF TURBEVILLE TO ROWESVILLE...OR ALONG A
LINE EXTENDING FROM 18 MILES NORTHWEST OF LAKE CITY TO 11 MILES SOUTH
OF ORANGEBURG...MOVING EAST AT 20 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
BOWMAN...SUMMERTON...VANCE...SANTEE AND MANNING

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT SUNDAY
EVENING FOR EAST CENTRAL GEORGIA AND 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 3332 8050 3323 8069 3332 8122 3335 8122
      3362 8097 3371 8066 3397 8019 3396 8017
      3401 8007 3401 8003 3405 8000 3400 7990
TIME...MOT...LOC 2112Z 282DEG 19KT 3399 8000 3334 8082

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 13, 8:01 PM EDTSpecial Weather StatementCAEFairfield, Lancaster59 min
Aug 13, 9:03 PM EDTSpecial Weather StatementCAEKershaw, Richland57 min
Aug 13, 10:02 PM EDTSpecial Weather StatementCAEChesterfield, Kershaw, Lee, Richland58 min
Aug 14, 2:45 PM EDTSpecial Weather StatementCAELexington60 min
Aug 14, 3:13 PM EDTSpecial Weather StatementCAEBarnwell62 min
Aug 14, 3:28 PM EDTSpecial Weather StatementCAEAiken62 min
Aug 14, 3:47 PM EDTSevere Thunderstorm WarningCAEAiken, Barnwell43 min
Aug 14, 3:52 PM EDTSpecial Weather StatementCAEBamberg, Orangeburg38 min
Aug 14, 3:53 PM EDTSevere Thunderstorm WarningCAEBamberg, Orangeburg52 min
Aug 14, 4:02 PM EDTSpecial Weather StatementCAECalhoun, Sumter58 min
Aug 14, 4:05 PM EDTSpecial Weather StatementCAEMcCormick40 min
Aug 14, 4:10 PM EDTSevere Thunderstorm WarningCAEAiken, Edgefield, McCormick, Saluda50 min
Aug 14, 4:52 PM EDTSevere Thunderstorm WarningCAEFairfield, Newberry53 min
Aug 14, 5:05 PM EDTSpecial Weather StatementCAEAiken, Edgefield40 min
Aug 14, 5:48 PM EDTSevere Thunderstorm WarningCAEFairfield, Kershaw, Richland42 min
Aug 14, 6:25 PM EDTSevere Thunderstorm WarningCAEFairfield, Kershaw, Lee, Richland, Sumter65 min
Aug 14, 6:30 PM EDTSpecial Weather StatementCAEBamberg, Barnwell45 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.