Alert archive / South Carolina / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 16, NWS Columbia, SC

April 5, 20115 counties in South Carolina; Columbia County, Lincoln County, McDuffie County, Georgia

NWS Columbia, SC issued this severe thunderstorm warning at Apr 5, 2011, 1:21 AM EDT for 5 counties in South Carolina; Columbia County, Lincoln County, McDuffie County, Georgia. It was in force for 54 min. 5 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
Apr 5, 2011, 1:21 AM EDT (05:21 UTC)
Expired
Apr 5, 2011, 2:15 AM EDT
In force
54 min
Issued by
NWS Columbia, SC
Area
Storm-based polygon

Counties Columbia County, GA, Lincoln County, GA, McDuffie County, GA, Edgefield County, SC, Fairfield County, SC, McCormick County, SC, Newberry County, SC, Saluda County, SC

The radar

The Columbia radar (KCAE), 88 km from the middle of the area, began a volume at 05:23 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
Apr 5, 1:50 AM EDTTSTM WND DMG2 Wnw Whitmire, SCTREE DOWN IN ROADWAY.
Apr 5, 2:00 AM EDTTSTM WND DMGLincolnton, GAPOWER OUTAGES DUE TO TREES AND LARGE LIMBS DOWN ON LINES.
Apr 5, 2:10 AM EDTTSTM WND DMG4 N Newberry, SCSHERIFF DISPATCH REPORTED TREES DOWN AT INTERSTATE 26 AND HIGHWAY 121.
Apr 5, 2:10 AM EDTTSTM WND DMG5 N Newberry, SCSHERIFF DISPATCH REPORTED TREES DOWN ALONG HIGHWAY 121.
Apr 5, 2:11 AM EDTTSTM WND DMG2 Ne Mccormick, SCSHERIFF DISPATCH REPORTED TREES DOWN ALONG HIGHWAY 221 JUST NORTH OF MCCORMICK.

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
Apr 5, 12:48 AM EDTTornado WatchSPC5 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 00:00Z, 5.4 hours before the alert went out and 229 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 00:00Z on 2011-04-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 106 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Charleston AFB, SC at 00:00Z on 2011-04-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 148 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
106 J/kg
Mixed-layer CIN
-189 J/kg
Mixed-layer LCL
1161 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
148 m²/s²
0-3 km storm-relative helicity
179 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

241 
WUUS52 KCAE 050521
SVRCAE
GAC073-181-189-SCC037-039-065-071-081-050615-
/O.NEW.KCAE.SV.W.0016.110405T0521Z-110405T0615Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE COLUMBIA SC
121 AM EDT TUE APR 5 2011

THE NATIONAL WEATHER SERVICE IN COLUMBIA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MCDUFFIE COUNTY IN EAST CENTRAL GEORGIA
  LINCOLN COUNTY IN EAST CENTRAL GEORGIA
  COLUMBIA COUNTY IN EAST CENTRAL GEORGIA
  EDGEFIELD COUNTY IN CENTRAL SOUTH CAROLINA
  WESTERN FAIRFIELD COUNTY IN CENTRAL SOUTH CAROLINA
  MCCORMICK COUNTY IN CENTRAL SOUTH CAROLINA
  NEWBERRY COUNTY IN CENTRAL SOUTH CAROLINA
  SALUDA COUNTY IN CENTRAL SOUTH CAROLINA

* UNTIL 215 AM EDT

* AT 120 AM 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 28 MILES WEST OF NEWBERRY TO 23 MILES WEST OF LINCOLNTON...OR
  ALONG A LINE EXTENDING FROM 11 MILES SOUTH OF LAURENS TO 8 MILES
  WEST OF WASHINGTON...AND MOVING EAST AT 50 MPH.

* SOME COMMUNITIES IN THE WARNING AREA INCLUDE THOMSON...MARTINEZ...
  LINCOLNTON...HARLEM...GROVETOWN...EVANS...WHITMIRE...SALUDA...RIDGE
  SPRING...PROSPERITY...NEWBERRY...MCCORMICK...JOHNSTON AND EDGEFIELD

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. IF A TORNADO
IS SPOTTED... ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

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 600 AM EDT TUESDAY MORNING
FOR EAST CENTRAL GEORGIA AND CENTRAL SOUTH CAROLINA.

&&

LAT...LON 3365 8251 3365 8249 3397 8264 3406 8253
      3406 8233 3397 8229 3402 8224 3395 8202
      3413 8186 3419 8193 3429 8188 3453 8163
      3444 8153 3449 8142 3457 8142 3454 8106
      3387 8160 3332 8236 3336 8256 3361 8265
TIME...MOT...LOC 0520Z 269DEG 42KT 3436 8202 3376 8281

$$

SJN

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 5, 1:55 AM EDTSevere Thunderstorm WarningCAEFairfield, Kershaw, Lancaster50 min
Apr 5, 2:21 AM EDTSevere Thunderstorm WarningCAEAiken, Chesterfield, Edgefield, Fairfield, Kershaw, Lancaster and 5 more54 min
Apr 5, 3:14 AM EDTSevere Thunderstorm WarningCAEAiken, Barnwell, Chesterfield, Edgefield, Fairfield, Kershaw and 5 more61 min
Apr 5, 4:00 AM EDTSevere Thunderstorm WarningCAEAiken, Bamberg, Barnwell, Calhoun, Chesterfield, Fairfield and 7 more60 min
Apr 5, 4:57 AM EDTSevere Thunderstorm WarningCAEBamberg, Calhoun, Clarendon, Lee, Orangeburg, Richland and 1 more63 min
Apr 5, 3:11 PM EDTFrost AdvisoryCAEChesterfield, Edgefield, Fairfield, Kershaw, Lee, McCormick and 2 more18 hr

Nearby

Severe Thunderstorm Warnings in South Carolina, 2011Severe Thunderstorm Warnings in Georgia, 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.