Alert archive / South Carolina / Special Weather Statements in 2012

Special Weather Statement, NWS Wilmington, NC

July 11, 2012Horry County, South Carolina

NWS Wilmington, NC issued this special weather statement at Jul 11, 2012, 4:05 PM EDT for Horry County, South Carolina. It was in force for 55 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
Jul 11, 2012, 4:05 PM EDT (20:05 UTC)
Expired
Jul 11, 2012, 5:00 PM EDT
In force
55 min
Issued by
NWS Wilmington, NC

County Horry County, SC

The radar

The Wilmington radar (KLTX), 42 km from the middle of the area, began a volume at 20:04 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, 8.1 hours before the alert went out and 169 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, Charleston AFB, SC at 12:00Z on 2012-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2022 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, Charleston AFB, SC at 12:00Z on 2012-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 54 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
2022 J/kg
Mixed-layer CIN
-51 J/kg
Mixed-layer LCL
802 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
54 m²/s²
0-3 km storm-relative helicity
54 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 Jul 11, 2:23 PM EDT, 1 hour 42 minutes earlier.

Area forecast discussion, Jul 11, 2:23 PM EDT, 1 hour 42 minutes before
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Hazardous weather outlook, Jul 11, 3:27 PM EDT, 38 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE WILMINGTON NC
327 PM EDT WED JUL 11 2012

NCZ087-096-099-105>110-SCZ017-023-024-032-033-039-053>056-121930-
ROBESON-BLADEN-COLUMBUS-INLAND PENDER-COASTAL PENDER-
INLAND NEW HANOVER-COASTAL NEW HANOVER-INLAND BRUNSWICK-
COASTAL BRUNSWICK-MARLBORO-DARLINGTON-DILLON-FLORENCE-MARION-
WILLIAMSBURG-INLAND HORRY-COASTAL HORRY-INLAND GEORGETOWN-
COASTAL GEORGETOWN-
327 PM EDT WED JUL 11 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST NORTH CAROLINA AND
NORTHEAST SOUTH CAROLINA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

SLOW MOVING THUNDERSTORMS WILL AFFECT THE AREA THIS AFTERNOON
THROUGH TONIGHT. TORRENTIAL DOWNPOURS WILL BECOME THE PRIMARY
CONCERN FROM CONVECTION.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED.

AMZ250-252-254-256-121930-
SURF CITY TO CAPE FEAR NC OUT 20 NM-
CAPE FEAR NC TO LITTLE RIVER INLET SC OUT 20 NM-
LITTLE RIVER INLET TO MURRELLS INLET SC OUT 20 NM-
MURRELLS INLET TO SOUTH SANTEE RIVER SC OUT 20 NM-
327 PM EDT WED JUL 11 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE ADJACENT COASTAL WATERS.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

SCATTERED CONVECTION WILL AFFECT THE COASTAL WATERS LATER THIS
AFTERNOON AND TONIGHT. THE PRIMARY THREATS FROM THIS ACTIVITY ARE
THE NEAR 0 VISIBILITY FROM THE SQUALLS ACCOMPANIED WITH 25 TO
POSSIBLY 35 KT WINDS...AND OCCASIONAL/FREQUENT CLOUD TO OCEAN
LIGHTNING.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED.

8

In the hours before

Special weather statement, Jul 11, 12:56 PM EDT, 3 hours 9 minutes before
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Special weather statement, Jul 11, 2:06 PM EDT, 1 hour 59 minutes before
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Special weather statement, Jul 11, 3:40 PM EDT, 25 minutes before
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Special weather statement, Jul 11, 4:05 PM EDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON NC
405 PM EDT WED JUL 11 2012

NCZ099-SCZ053-112100-
COLUMBUS-INLAND HORRY-
405 PM EDT WED JUL 11 2012

...A STRONG THUNDERSTORM WILL MOVE ACROSS HORRY AND COLUMBUS COUNTIES
THROUGH 500 PM EDT...

AT 405 PM EDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM OVER
HOMEWOOD...OR ABOUT OVER CONWAY...MOVING NORTH NORTHEAST AT 20 MPH.

SOME LOCATIONS IMPACTED INCLUDE ADRIAN...ALLSBROOK...BAYBORO...CHERRY
GROVE...DULAH...FAIR BLUFF...GORETOWN...GREEN SEA...HAMMOND...
HOMEWOOD...HORRY AND LONGS.

HAZARDS INCLUDE...
PEA SIZE HAIL.
GUSTY WINDS OF 35 TO 45 MPH.
FREQUENT CLOUD TO GROUND LIGHTNING.
HEAVY RAINFALL AND MINOR FLOODING.

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 3403 7861 3401 7864 3399 7863 3378 7892
      3397 7926 3431 7905 3431 7904 3433 7903
TIME...MOT...LOC 2005Z 203DEG 17KT 3393 7899

ZOUZIAS

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 11, 12:37 AM EDTSpecial Weather StatementILMHorry23 min
Jul 11, 12:56 PM EDTSpecial Weather StatementILMGeorgetown64 min
Jul 11, 1:43 PM EDTAreal Flood AdvisoryILMGeorgetown98 min
Jul 11, 2:06 PM EDTSpecial Weather StatementILMGeorgetown54 min
Jul 11, 2:51 PM EDTSevere Thunderstorm WarningILMGeorgetown, Horry43 min
Jul 11, 3:40 PM EDTSpecial Weather StatementILMHorry65 min
Jul 11, 6:33 PM EDTSpecial Weather StatementILMMarlboro57 min
Jul 11, 6:56 PM EDTAreal Flood AdvisoryILMDillon, Marlboro109 min
Jul 11, 4:36 PM EDTSpecial Weather StatementILMColumbus54 min
Jul 11, 5:23 PM EDTSpecial Weather StatementILMColumbus, Pender52 min
Jul 11, 6:03 PM EDTSpecial Weather StatementILMBladen, Pender57 min
Jul 11, 6:12 PM EDTSpecial Weather StatementILMRobeson63 min
Jul 11, 6:24 PM EDTAreal Flood AdvisoryILMBladen, Robeson111 min
Jul 11, 6:35 PM EDTAreal Flood WarningILMPender3 hr

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.