Alert archive / South Carolina / Tornado Warnings in 2011

Tornado Warning 24, NWS Wilmington, NC

May 10, 2011Georgetown County, Williamsburg County, South Carolina

NWS Wilmington, NC issued this tornado warning at May 10, 2011, 7:24 PM EDT for Georgetown County, Williamsburg County, South Carolina. It was in force for 51 min. 3 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: May 10, 2011, 7:24 PM EDT (23:24 UTC)
Expired: May 10, 2011, 8:15 PM EDT
In force: 51 min
Issued by: NWS Wilmington, NC
Area: Storm-based polygon

Counties Georgetown County, SC, Williamsburg County, SC

The radar

The Wilmington radar (KLTX), 124 km from the middle of the area, began a volume at 23:27 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 10, 7:29 PM EDT	HAIL 2.75	Andrews, SC	BASEBALL SIZE HAIL DAMAGING VEHICLES IN THE AREA.
May 10, 7:30 PM EDT	HAIL 2.5	Andrews, SC
May 10, 7:55 PM EDT	HAIL 1.75	1 S Andrews, SC

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.

Issued	Product	Office	Lasted
May 10, 3:20 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Charleston AFB, SC (KCHS), launched 12:00Z, 11.4 hours before the alert went out and 66 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: 904 J/kg
Mixed-layer CIN: -74 J/kg
Mixed-layer LCL: 890 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 118 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.1

Open this sounding in Storm Lab

The text

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

833 
WFUS52 KILM 102324
TORILM
SCC043-089-110015-
/O.NEW.KILM.TO.W.0024.110510T2324Z-110511T0015Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE WILMINGTON NC
724 PM EDT TUE MAY 10 2011

THE NATIONAL WEATHER SERVICE IN WILMINGTON NC HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN GEORGETOWN COUNTY IN NORTHEAST SOUTH CAROLINA
  SOUTHEASTERN WILLIAMSBURG COUNTY IN NORTHEAST SOUTH CAROLINA

* UNTIL 815 PM EDT

* AT 718 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR WARSAW...OR
  ABOUT 18 MILES SOUTHEAST OF KINGSTREE...MOVING SOUTH AT 20 MPH.

* SOME LOCATIONS IN THE WARNING INCLUDE...
   GRAVES...
   SAMPIT...
   LAMBERT...
   NORTH SANTEE...

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING
SOFTBALL SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

GET UNDER A TABLE OR OTHER PIECE OF STURDY FURNITURE. SEEK SHELTER ON
THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH
AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS
STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

&&

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 3315 7930 3321 7945 3323 7946 3324 7953
      3327 7957 3329 7966 3335 7977 3363 7966
      3367 7932
TIME...MOT...LOC 2323Z 014DEG 16KT 3347 7960

$$

III

3 follow-up statements

282 
WWUS52 KILM 102333
SVSILM

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON NC
733 PM EDT TUE MAY 10 2011

SCC043-089-110015-
/O.CON.KILM.TO.W.0024.000000T0000Z-110511T0015Z/
WILLIAMSBURG SC-GEORGETOWN SC-
733 PM EDT TUE MAY 10 2011

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

AT 727 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A POSSIBLE TORNADO.  THIS TORNADO WAS LOCATED NEAR 
EARLE...OR 19 MILES EAST OF SAINT STEPHEN...MOVING SOUTH AT 20 MPH.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SAMPIT AND
LAMBERT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO THE TORNADO...THIS STORM HAS BEEN PRODUCING 2.5 INCH 
HAIL.

&&

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 3360 7967 3357 7932 3320 7941 3321 7945
      3323 7946 3324 7953 3327 7957 3329 7966
      3335 7977
TIME...MOT...LOC 2332Z 014DEG 16KT 3343 7961

$$

III

684 
WWUS52 KILM 102345
SVSILM

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON NC
745 PM EDT TUE MAY 10 2011

SCC043-089-110015-
/O.CON.KILM.TO.W.0024.000000T0000Z-110511T0015Z/
WILLIAMSBURG SC-GEORGETOWN SC-
745 PM EDT TUE MAY 10 2011

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

AT 741 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A POSSIBLE TORNADO.  THIS TORNADO WAS LOCATED NEAR 
ANDREWS...OR 17 MILES EAST OF SAINT STEPHEN...MOVING SOUTH AT 20 MPH.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO LAMBERT. 
THIS STORM WILL CROSS ROUTE 17 NEAR THE ROUTE 17 AND 41 JUNCTION.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO THE TORNADO...THIS STORM HAS PRODUCED TENNIS BALL 
SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

&&

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 3360 7967 3357 7932 3323 7946 3324 7953
      3327 7957 3329 7966 3335 7977
TIME...MOT...LOC 2344Z 014DEG 16KT 3338 7963

$$

III

399 
WWUS52 KILM 110007
SVSILM

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON NC
807 PM EDT TUE MAY 10 2011

SCC043-089-110015-
/O.CON.KILM.TO.W.0024.000000T0000Z-110511T0015Z/
WILLIAMSBURG SC-GEORGETOWN SC-
807 PM EDT TUE MAY 10 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 815 PM EDT FOR WEST
CENTRAL GEORGETOWN AND SOUTH CENTRAL WILLIAMSBURG COUNTIES...

AT 804 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO.  THIS TORNADO WAS LOCATED NEAR EARLE...OR 16
MILES EAST OF SAINT STEPHEN...MOVING SOUTH AT 25 MPH.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO LAMBERT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 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 3351 7970 3346 7954 3324 7950 3327 7957
      3329 7966 3335 7977
TIME...MOT...LOC 0007Z 017DEG 23KT 3337 7966

$$

III

The office that day

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

Issued	Product	Office	Counties	Lasted
May 10, 4:33 PM EDT	Severe Thunderstorm Warning	ILM	Horry	42 min
May 10, 5:15 PM EDT	Severe Thunderstorm Warning	ILM	Horry	30 min
May 10, 5:18 PM EDT	Special Marine Warning	ILM		57 min
May 10, 5:27 PM EDT	Severe Thunderstorm Warning	ILM	Florence, Marion	63 min
May 10, 5:39 PM EDT	Tornado Warning	ILM	Horry	30 min
May 10, 5:48 PM EDT	Special Marine Warning	ILM		57 min
May 10, 6:13 PM EDT	Severe Thunderstorm Warning	ILM	Horry, Marion	77 min
May 10, 6:19 PM EDT	Severe Thunderstorm Warning	ILM	Florence, Georgetown, Williamsburg	56 min
May 10, 6:31 PM EDT	Special Marine Warning	ILM		59 min
May 10, 6:40 PM EDT	Severe Thunderstorm Warning	ILM	Dillon, Horry, Marion	50 min
May 10, 7:12 PM EDT	Severe Thunderstorm Warning	ILM	Georgetown, Williamsburg	63 min
May 10, 7:16 PM EDT	Severe Thunderstorm Warning	ILM	Florence, Georgetown, Williamsburg	31 min
May 10, 7:24 PM EDT	Special Marine Warning	ILM		66 min

Nearby

Tornado Warnings in South Carolina, 2011 Every tornado warning in 2011 Tornadoes 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.