Alert archive / South Carolina / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 142, NWS Wilmington, NC

August 2, 2012Georgetown County, Williamsburg County, South Carolina

NWS Wilmington, NC issued this severe thunderstorm warning at Aug 2, 2012, 7:13 PM EDT for Georgetown County, Williamsburg County, South Carolina. It was in force for 62 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 2, 2012, 7:13 PM EDT (23:13 UTC)
Expired: Aug 2, 2012, 8:15 PM EDT
In force: 62 min
Issued by: NWS Wilmington, NC
Area: Storm-based polygon

Counties Georgetown County, SC, Williamsburg County, SC

The radar

The Wilmington radar (KLTX), 133 km from the middle of the area, began a volume at 23:12 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, 11.2 hours before the alert went out and 60 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1922 J/kg
Mixed-layer CIN: -45 J/kg
Mixed-layer LCL: 1137 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 6 m²/s²
0-3 km storm-relative helicity: 14 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

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

033 
WUUS52 KILM 022313
SVRILM
SCC043-089-030015-
/O.NEW.KILM.SV.W.0142.120802T2313Z-120803T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WILMINGTON NC
713 PM EDT THU AUG 2 2012

THE NATIONAL WEATHER SERVICE IN WILMINGTON NC HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN GEORGETOWN COUNTY IN NORTHEAST SOUTH CAROLINA
  SOUTHERN WILLIAMSBURG COUNTY IN NORTHEAST SOUTH CAROLINA

* UNTIL 815 PM EDT

* AT 708 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED 42 MILES NORTHEAST OF HENRY...OR
  16 MILES NORTHEAST OF CONWAY. THIS STORM WAS MOVING EAST AT 10 MPH.

* THE SEVERE THUNDERSTORM WILL OTHERWISE IMPACT MAINLY RURAL AREAS OF
  THE INDICATED COUNTIES.

MORE DANGEROUS THUNDERSTORMS MAY DEVELOP AND AFFECT OTHER COMMUNITIES
IN THE WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MPH...
DESTRUCTIVE HAIL...DEADLY LIGHTNING AND HEAVY RAIN. FOR YOUR
PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME
OR BUSINESS.

&&

PLEASE REPORT HAIL...DOWNED TREES OR DAMAGING WINDS TO THE NATIONAL
WEATHER SERVICE IN WILMINGTON NC...TOLL FREE AT 800-697-3901 OR
877-633-6772...WHEN YOU CAN DO SO SAFELY.

LAT...LON 3322 7946 3327 7957 3329 7966 3332 7970
      3332 7974 3337 7979 3337 7981 3340 7985
      3348 7994 3375 7939 3320 7933
TIME...MOT...LOC 2313Z 180DEG 0KT 3404 7890

$$

15

3 follow-up statements

350 
WWUS52 KILM 022338
SVSILM

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON NC
738 PM EDT THU AUG 2 2012

SCC043-089-030015-
/O.CON.KILM.SV.W.0142.000000T0000Z-120803T0015Z/
WILLIAMSBURG SC-GEORGETOWN SC-
738 PM EDT THU AUG 2 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT
FOR WESTERN GEORGETOWN AND SOUTHEASTERN WILLIAMSBURG COUNTIES...

AT 735 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. 

PLEASE REPORT HAIL...DOWNED TREES OR DAMAGING WINDS TO THE NATIONAL
WEATHER SERVICE IN WILMINGTON NC...TOLL FREE AT 800-697-3901 OR
877-633-6772...WHEN YOU CAN DO SO SAFELY.

LAT...LON 3322 7946 3327 7957 3329 7966 3332 7970
      3332 7974 3337 7979 3337 7981 3340 7985
      3355 7979 3375 7939 3320 7933
TIME...MOT...LOC 2338Z 180DEG 0KT 3404 7890

$$

15

005 
WWUS52 KILM 022356
SVSILM

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON NC
756 PM EDT THU AUG 2 2012

SCC043-089-030015-
/O.CON.KILM.SV.W.0142.000000T0000Z-120803T0015Z/
WILLIAMSBURG SC-GEORGETOWN SC-
756 PM EDT THU AUG 2 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT
FOR WESTERN GEORGETOWN AND SOUTHEASTERN WILLIAMSBURG COUNTIES...

AT 754 PM EDT...A SEVERE THUNDERSTORM WAS REPORTED CAPABLE OF 
PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. 

PLEASE REPORT HAIL...DOWNED TREES OR DAMAGING WINDS TO THE NATIONAL
WEATHER SERVICE IN WILMINGTON NC...TOLL FREE AT 800-697-3901 OR
877-633-6772...WHEN YOU CAN DO SO SAFELY.

LAT...LON 3327 7935 3332 7963 3337 7974 3340 7976
      3354 7975 3375 7939
TIME...MOT...LOC 2355Z 180DEG 0KT 3404 7890

$$

15

764 
WWUS52 KILM 030014
SVSILM

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON NC
814 PM EDT THU AUG 2 2012

SCC043-089-030024-
/O.EXP.KILM.SV.W.0142.000000T0000Z-120803T0015Z/
WILLIAMSBURG SC-GEORGETOWN SC-
814 PM EDT THU AUG 2 2012

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN GEORGETOWN AND
SOUTHEASTERN WILLIAMSBURG COUNTIES WILL EXPIRE AT 815 PM EDT...

AT 812 PM EDT...THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING
HAS WEAKENED...THUS THE WARNING WAS ALLOWED TO EXPIRE.

PLEASE REPORT HAIL...DOWNED TREES OR DAMAGING WINDS TO THE NATIONAL
WEATHER SERVICE IN WILMINGTON NC...TOLL FREE AT 800-697-3901 OR
877-633-6772...WHEN YOU CAN DO SO SAFELY.

LAT...LON 3327 7935 3332 7963 3337 7974 3340 7976
      3354 7975 3375 7939
TIME...MOT...LOC 0014Z 180DEG 0KT 3404 7890

$$

15

The office that day

Everything else NWS Wilmington, NC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 2, 3:16 PM EDT	Special Weather Statement	ILM	Georgetown	59 min
Aug 2, 5:39 PM EDT	Special Weather Statement	ILM	Florence	66 min
Aug 2, 5:44 PM EDT	Severe Thunderstorm Warning	ILM	Florence	35 min
Aug 2, 6:15 PM EDT	Severe Thunderstorm Warning	ILM	Marlboro	17 min
Aug 2, 6:24 PM EDT	Severe Thunderstorm Warning	ILM	Florence, Williamsburg	30 min
Aug 2, 6:51 PM EDT	Special Weather Statement	ILM	Marion	54 min
Aug 2, 7:04 PM EDT	Special Weather Statement	ILM	Williamsburg	56 min
Aug 2, 7:50 PM EDT	Severe Thunderstorm Warning	ILM	Florence, Georgetown, Horry, Marion, Williamsburg	41 min

Nearby

Severe Thunderstorm Warnings in South Carolina, 2012 Every severe thunderstorm warning in 2012

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.