Alert archive / South Carolina / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 47, NWS Wilmington, NC

May 15, 2012Georgetown County, Horry County, South Carolina

NWS Wilmington, NC issued this severe thunderstorm warning at May 15, 2012, 1:59 PM EDT for Georgetown County, Horry County, South Carolina. It was in force for 46 min. 1 report 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: May 15, 2012, 1:59 PM EDT (17:59 UTC)
Expired: May 15, 2012, 2:45 PM EDT
In force: 46 min
Issued by: NWS Wilmington, NC
Area: Storm-based polygon

Counties Georgetown County, SC, Horry County, SC

The radar

The Wilmington radar (KLTX), 76 km from the middle of the area, began a volume at 17:59 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
May 15, 2:05 PM EDT	HAIL 1	1 Sse Plantersville, SC	NICKEL TO QUARTER SIZE HAIL FELL AT PLANTERSVILLE ELEMENTARY SCHOOL

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 6.0 hours before the alert went out and 113 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: 1682 J/kg
Mixed-layer CIN: -6 J/kg
Mixed-layer LCL: 555 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 74 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.5

Open this sounding in Storm Lab

The text

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

943 
WUUS52 KILM 151759
SVRILM
SCC043-051-151845-
/O.NEW.KILM.SV.W.0047.120515T1759Z-120515T1845Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WILMINGTON NC
159 PM EDT TUE MAY 15 2012

THE NATIONAL WEATHER SERVICE IN WILMINGTON NC HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN HORRY COUNTY IN NORTHEAST SOUTH CAROLINA
  NORTHEASTERN GEORGETOWN COUNTY IN NORTHEAST SOUTH CAROLINA

* UNTIL 245 PM EDT

* AT 154 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  PLANTERSVILLE...OR 9 MILES WEST OF MURRELLS INLET...AND MOVING
  NORTHEAST AT 10 MPH.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO...
   YAUHANNAH...
   MURRELLS INLET...
   BURGESS...

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 877-633-6772...WHEN
YOU CAN DO SO SAFELY.

LAT...LON 3340 7921 3353 7936 3385 7903 3370 7885
      3364 7893 3356 7900 3353 7902 3348 7907
TIME...MOT...LOC 1758Z 237DEG 10KT 3354 7920

$$

BACON

2 follow-up statements

347 
WWUS52 KILM 151837
SVSILM

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON NC
237 PM EDT TUE MAY 15 2012

SCC043-051-151845-
/O.CON.KILM.SV.W.0047.000000T0000Z-120515T1845Z/
GEORGETOWN SC-HORRY SC-
237 PM EDT TUE MAY 15 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM EDT
FOR SOUTH CENTRAL HORRY AND NORTHEASTERN GEORGETOWN COUNTIES...

AT 236 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR BURGESS...OR 4 MILES NORTHWEST OF MURRELLS INLET...
MOVING NORTHEAST AT 10 MPH.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BUCKSVILLE...
SURFSIDE BEACH...SOCASTEE...RED HILL...MYRTLE BEACH...GARDEN CITY...
FORESTBROOK AND BUCKSPORT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
TUESDAY EVENING FOR SOUTHEAST NORTH CAROLINA AND NORTHEAST SOUTH
CAROLINA.

&&

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

LAT...LON 3340 7921 3353 7936 3385 7903 3370 7885
      3364 7893 3356 7900 3353 7902 3348 7907
TIME...MOT...LOC 1837Z 237DEG 10KT 3360 7909

$$

BACON

775 
WWUS52 KILM 151841
SVSILM

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON NC
241 PM EDT TUE MAY 15 2012

SCC043-051-151851-
/O.EXP.KILM.SV.W.0047.000000T0000Z-120515T1845Z/
GEORGETOWN SC-HORRY SC-
241 PM EDT TUE MAY 15 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL HORRY AND
NORTHEASTERN GEORGETOWN COUNTIES WILL EXPIRE AT 245 PM EDT...

AT 240 PM EDT...THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING
HAS WEAKENED...THUS THE WARNING WAS ALLOWED TO EXPIRE.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT
TUESDAY EVENING FOR SOUTHEAST NORTH CAROLINA AND NORTHEAST SOUTH
CAROLINA.

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

LAT...LON 3340 7921 3353 7936 3385 7903 3370 7885
      3364 7893 3356 7900 3353 7902 3348 7907
TIME...MOT...LOC 1841Z 237DEG 10KT 3361 7908

$$

BACON

The office that day

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

Issued	Product	Office	Counties	Lasted
May 14, 11:36 PM EDT	Special Weather Statement	ILM	Horry	54 min
May 14, 11:50 PM EDT	Tornado Warning	ILM	Horry	26 min
May 15, 1:36 PM EDT	Special Weather Statement	ILM	Horry	39 min
May 15, 1:54 PM EDT	Special Weather Statement	ILM	Georgetown	36 min
May 15, 2:04 PM EDT	Tornado Warning	ILM	Georgetown, Horry	26 min
May 15, 2:09 PM EDT	Severe Thunderstorm Warning	ILM	Horry	38 min
May 15, 2:29 PM EDT	Areal Flood Warning	ILM	Georgetown, Horry, Marion	37 min
May 15, 4:03 PM EDT	Severe Thunderstorm Warning	ILM	Dillon	34 min
May 15, 4:42 PM EDT	Special Weather Statement	ILM	Georgetown	63 min
May 15, 5:05 PM EDT	Special Weather Statement	ILM	Marlboro	40 min
May 15, 5:22 PM EDT	Areal Flood Warning	ILM	Georgetown	2 hr
May 15, 7:39 PM EDT	Special Weather Statement	ILM	Dillon	66 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.