Alert archive / South Carolina / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 39, NWS Wilmington, NC

May 14, 20124 counties in South Carolina

NWS Wilmington, NC issued this severe thunderstorm warning at May 14, 2012, 3:17 PM EDT for 4 counties in South Carolina. It was in force for 58 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 14, 2012, 3:17 PM EDT (19:17 UTC)
Expired: May 14, 2012, 4:15 PM EDT
In force: 58 min
Issued by: NWS Wilmington, NC
Area: Storm-based polygon

Counties Dillon County, SC, Florence County, SC, Horry County, SC, Marion County, SC

The radar

The Wilmington radar (KLTX), 86 km from the middle of the area, began a volume at 19:20 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 14, 3:41 PM EDT	TSTM WND DMG	5 Ssw Rains, SC	TREES DOWN NEAR ALICE AVENUE. TIME ESTIMATED BASED OFF RADAR.

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, 7.3 hours before the alert went out and 152 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: 518 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 722 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 96 m²/s²
0-3 km storm-relative helicity: 143 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

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

659 
WUUS52 KILM 141917
SVRILM
SCC033-041-051-067-142015-
/O.NEW.KILM.SV.W.0039.120514T1917Z-120514T2015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WILMINGTON NC
317 PM EDT MON MAY 14 2012

THE NATIONAL WEATHER SERVICE IN WILMINGTON NC HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN HORRY COUNTY IN NORTHEAST SOUTH CAROLINA
  EASTERN FLORENCE COUNTY IN NORTHEAST SOUTH CAROLINA
  MARION COUNTY IN NORTHEAST SOUTH CAROLINA
  SOUTHEASTERN DILLON COUNTY IN NORTHEAST SOUTH CAROLINA

* UNTIL 415 PM EDT

* AT 317 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
  LOCATED ALONG A LINE EXTENDING FROM CLAUSSEN TO PAMPLICO TO
  HANNAH...AND MOVING EAST AT 25 MPH.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO...
   KINGSBURG...
   BLUE BRICK...
   GRESHAM...
   MARION...
   BRITTON NECK...
   RAINS...

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 3441 7923 3391 7894 3387 7962 3416 7967
TIME...MOT...LOC 1917Z 248DEG 21KT 3412 7956 3401 7952
          3391 7953

$$

III

3 follow-up statements

458 
WWUS52 KILM 141933
SVSILM

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON NC
333 PM EDT MON MAY 14 2012

SCC033-041-051-067-142015-
/O.CON.KILM.SV.W.0039.000000T0000Z-120514T2015Z/
DILLON SC-MARION SC-FLORENCE SC-HORRY SC-
333 PM EDT MON MAY 14 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR NORTHWESTERN HORRY...EASTERN FLORENCE...MARION AND SOUTHEASTERN
DILLON COUNTIES...

AT 328 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS 
WERE LOCATED ALONG A LINE EXTENDING FROM WEST MARION TO GRESHAM AND 
MOVING EAST AT 30 MPH.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BRITTON
NECK...RAINS...GALIVANTS FERRY...ZION...FLOYDALE...SMITHBORO...
GAPWAY...MULLINS...FORK...AYNOR...HORRY...KEMPER...NICHOLS...ADRIAN
AND BAYBORO.

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 3407 7962 3422 7957 3441 7923 3391 7894
      3387 7962 3399 7964
TIME...MOT...LOC 1933Z 252DEG 26KT 3415 7943 3404 7939
          3394 7940

$$

III

619 
WWUS52 KILM 141946
SVSILM

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON NC
346 PM EDT MON MAY 14 2012

SCC033-041-051-067-142015-
/O.CON.KILM.SV.W.0039.000000T0000Z-120514T2015Z/
DILLON SC-MARION SC-FLORENCE SC-HORRY SC-
346 PM EDT MON MAY 14 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR NORTHWESTERN HORRY...EAST CENTRAL FLORENCE...MARION AND
SOUTHEASTERN DILLON COUNTIES...

AT 346 PM EDT...A LINE OF SEVERE THUNDERSTORMS WAS REPORTED CAPABLE
OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60
MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM WEST 
MARION TO RAINS TO BRITTON NECK...MOVING EAST AT 30 MPH.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO GALIVANTS
FERRY...ZION...FLOYDALE...GAPWAY...SMITHBORO...MULLINS...FORK...
AYNOR...HORRY...KEMPER...NICHOLS...ADRIAN AND BAYBORO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. 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.

&&

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 3388 7958 3396 7956 3404 7959 3411 7948
      3425 7951 3441 7923 3391 7894
TIME...MOT...LOC 1946Z 252DEG 26KT 3423 7935 3406 7928
          3397 7932

$$

III

752 
WWUS52 KILM 141959
SVSILM

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON NC
359 PM EDT MON MAY 14 2012

SCC041-142009-
/O.CAN.KILM.SV.W.0039.000000T0000Z-120514T2015Z/
FLORENCE SC-
359 PM EDT MON MAY 14 2012

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL FLORENCE COUNTY
IS CANCELED...

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 3389 7935 3407 7942 3429 7944 3441 7923
      3391 7894
TIME...MOT...LOC 1959Z 252DEG 26KT 3426 7924 3409 7917
          3400 7921

$$

SCC033-051-067-142015-
/O.CON.KILM.SV.W.0039.000000T0000Z-120514T2015Z/
DILLON SC-MARION SC-HORRY SC-
359 PM EDT MON MAY 14 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM EDT
FOR NORTHWESTERN HORRY...EASTERN MARION AND SOUTHEASTERN DILLON
COUNTIES...

AT 355 PM EDT...A LINE OF SEVERE THUNDERSTORMS WAS REPORTED CAPABLE
OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60
MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM SMITHBORO
TO GALIVANTS FERRY TO AYNOR...MOVING EAST AT 30 MPH.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO HORRY...
KEMPER...NICHOLS...ADRIAN AND BAYBORO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. 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.

&&

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 3389 7935 3407 7942 3429 7944 3441 7923
      3391 7894
TIME...MOT...LOC 1959Z 252DEG 26KT 3426 7924 3409 7917
          3400 7921

$$

III

The office that day

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

Issued	Product	Office	Counties	Lasted
May 14, 12:56 PM EDT	Special Weather Statement	ILM	Darlington, Marlboro	79 min
May 14, 1:07 PM EDT	Special Weather Statement	ILM	Florence, Williamsburg	53 min
May 14, 2:04 PM EDT	Special Weather Statement	ILM	Dillon, Florence, Marion	56 min
May 14, 2:18 PM EDT	Special Weather Statement	ILM	Williamsburg	57 min
May 14, 3:22 PM EDT	Severe Thunderstorm Warning	ILM	Florence, Georgetown, Horry, Marion, Williamsburg	32 min
May 14, 4:07 PM EDT	Severe Thunderstorm Warning	ILM	Dillon, Horry, Marion	68 min
May 14, 4:14 PM EDT	Tornado Warning	ILM	Horry	31 min
May 14, 4:23 PM EDT	Severe Thunderstorm Warning	ILM	Florence, Georgetown, Horry, Marion, Williamsburg	67 min
May 14, 4:33 PM EDT	Tornado Warning	ILM	Horry, Marion	27 min
May 14, 4:47 PM EDT	Tornado Warning	ILM	Horry	43 min
May 14, 5:10 PM EDT	Areal Flood Warning	ILM	Horry	3 hr
May 14, 5:17 PM EDT	Severe Thunderstorm Warning	ILM	Horry	58 min
May 14, 6:01 PM EDT	Severe Thunderstorm Warning	ILM	Horry	59 min
May 14, 6:04 PM EDT	Special Marine Warning	ILM		56 min
May 14, 6:37 PM EDT	Special Weather Statement	ILM	Horry	53 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.