Alert archive / South Carolina / Special Weather Statements in 2012

Special Weather Statement, NWS Wilmington, NC

September 8, 2012Horry County, South Carolina

NWS Wilmington, NC issued this special weather statement at Sep 8, 2012, 9:38 PM EDT for Horry County, South Carolina. It was in force for 67 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
Sep 8, 2012, 9:38 PM EDT (01:38 UTC)
Expired
Sep 8, 2012, 10:45 PM EDT
In force
67 min
Issued by
NWS Wilmington, NC

County Horry County, SC

The radar

The Wilmington radar (KLTX), 34 km from the middle of the area, began a volume at 01:41 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

Newport, NC (KMHX), launched 00:00Z, 1.6 hours before the alert went out and 201 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, Newport, NC at 00:00Z on 2012-09-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2376 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Newport, NC at 00:00Z on 2012-09-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 47 square meters per square second.1939Sfc1 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
2376 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
674 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
47 m²/s²
0-3 km storm-relative helicity
57 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Wilmington, NC wrote its last area forecast discussion before this special weather statement went out at Sep 8, 8:39 PM EDT, 59 minutes earlier.

Area forecast discussion, Sep 8, 8:39 PM EDT, 59 minutes before
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Hazardous weather outlook, Sep 8, 9:28 PM EDT, 10 minutes before
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In the hours before

Special weather statement, Sep 8, 6:16 PM EDT, 3 hours 22 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON NC
616 PM EDT SAT SEP 8 2012

NCZ087-096-099-082315-
BLADEN-COLUMBUS-ROBESON-
616 PM EDT SAT SEP 8 2012

...STRONG THUNDERSTORMS WILL MOVE ACROSS BLADEN...COLUMBUS AND
ROBESON COUNTIES THROUGH 715 PM EDT...

AT 616 PM EDT...DOPPLER RADAR INDICATED STRONG THUNDERSTORMS ALONG A
LINE EXTENDING FROM ROWLAND TO MULLINS...MOVING EAST AT 25 MPH.

SOME LOCATIONS IMPACTED INCLUDE LUMBERTON...WHITEVILLE...
ABBOTTSBURG...BARNESVILLE...BLADENBORO...BOARDMAN...CHADBOURN...
CHERRY GROVE...CLARENDON...ELKTON...ELROD AND EMERSON.

HAZARDS INCLUDE...
PEA SIZE HAIL.
GUSTY WINDS OF 30 TO 40 MPH.

FREQUENT CLOUD TO GROUND LIGHTNING.

THUNDERSTORMS CAN POSE A VARIETY OF THREATS INCLUDING GUSTY WINDS...
SMALL HAIL...CLOUD TO GROUND LIGHTNING...AND LOCALIZED FLOODING. IT
IS RECOMMENDED THAT YOU REMAIN INDOORS UNTIL THE STORMS PASS.

&&

LAT...LON 3426 7839 3417 7892 3460 7942 3471 7871
TIME...MOT...LOC 2216Z 254DEG 28KT 3450 7925 3425 7923

III
Special weather statement, Sep 8, 7:35 PM EDT, 2 hours 3 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON NC
735 PM EDT SAT SEP 8 2012

NCZ096-099-109-SCZ053-090030-
BLADEN-COLUMBUS-INLAND BRUNSWICK-INLAND HORRY-
735 PM EDT SAT SEP 8 2012

...STRONG THUNDERSTORMS WILL MOVE ACROSS HORRY...BRUNSWICK...BLADEN
AND COLUMBUS COUNTIES THROUGH 830 PM EDT...

AT 735 PM EDT...DOPPLER RADAR INDICATED STRONG THUNDERSTORMS ALONG A
LINE EXTENDING FROM WHITEVILLE TO OLD DOCK TO BETHEL...MOVING EAST
AT 20 MPH.

SOME LOCATIONS IMPACTED INCLUDE WHITEVILLE...ASH...BETHEL...
BUGHILL...CARVERS...CHADBOURN...CHERRY GROVE...CLARENDON...COUNCIL...
CRUSOE ISLAND...EXUM AND FREELAND.

HAZARDS INCLUDE...
PEA SIZE HAIL.
GUSTY WINDS OF 30 TO 40 MPH.

IF YOU SEE LIGHTNING OR HEAR THUNDER...YOU ARE AT RISK. TAKE SHELTER
INDOORS IMMEDIATELY. IF YOU CANNOT FIND SHELTER IN A BUILDING A
VEHICLE PROVIDES SAFETY FROM LIGHTNING.

&&

LAT...LON 3455 7835 3406 7824 3405 7883 3425 7903
TIME...MOT...LOC 2335Z 261DEG 14KT 3435 7860 3419 7863
          3411 7877

III
Local storm report, Sep 8, 8:10 PM EDT, 1 hour 28 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON NC
810 PM EDT SAT SEP 08 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0725 PM     LIGHTNING        4 ESE CLARENDON         34.19N  78.79W
09/08/2012                   COLUMBUS           NC   AMATEUR RADIO

            LIGHTNING STRUCK A HOME ON JAMES B WHITE HWY SOUTH.
            TIME OF EVENT ESTIMATED BY RADAR.

&&

EVENT NUMBER ILM1200330

LACORTE
Special weather statement, Sep 8, 8:53 PM EDT, 45 minutes before
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Local storm report, Sep 8, 8:55 PM EDT, 43 minutes before
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Special weather statement, Sep 8, 9:38 PM EDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Sep 8, 8:53 PM EDTSpecial Weather StatementILMMarion52 min
Sep 8, 9:17 PM EDTAreal Flood AdvisoryILMDarlington, Dillon, Florence, Horry, Marion88 min

Nearby

Special Weather Statements in South Carolina, 2012Every special weather statement 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.