Alert archive / South Carolina / Special Weather Statements in 2012

Special Weather Statement, NWS Wilmington, NC

May 17, 2012Horry County, Williamsburg County, South Carolina

NWS Wilmington, NC issued this special weather statement at May 17, 2012, 4:36 AM EDT for Horry County, Williamsburg County, South Carolina. It was in force for 54 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: May 17, 2012, 4:36 AM EDT (08:36 UTC)
Expired: May 17, 2012, 5:30 AM EDT
In force: 54 min
Issued by: NWS Wilmington, NC

Counties Horry County, SC, Williamsburg County, SC

The radar

The Wilmington radar (KLTX), 84 km from the middle of the area, began a volume at 08:39 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 00:00Z, 8.6 hours before the alert went out and 109 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: 1393 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 1014 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 2 m²/s²
0-3 km storm-relative helicity: 37 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 May 17, 3:17 AM EDT, 1 hour 19 minutes earlier.

Area forecast discussion, May 17, 3:17 AM EDT, 1 hour 19 minutes before

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Hazardous weather outlook, May 17, 3:24 AM EDT, 1 hour 12 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE WILMINGTON NC
324 AM EDT THU MAY 17 2012

NCZ087-096-099-105>110-SCZ017-023-024-032-033-039-053>056-180730-
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-
324 AM EDT THU MAY 17 2012

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

.DAY ONE...TODAY AND TONIGHT.

SLOW MOVING AND STRONG THUNDERSTORMS COULD BRING ISOLATED FLOODING
TODAY AND THIS EVENING.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED.

AMZ250-252-254-256-180730-
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-
324 AM EDT THU MAY 17 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE ADJACENT COASTAL WATERS.

.DAY ONE...TODAY AND TONIGHT.

THUNDERSTORMS WILL PRODUCE LOCALLY STRONG WINDS AND REDUCED VISIBILITIES.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

SMALL CRAFT ADVISORY CONDITIONS POSSIBLE FRIDAY AND FRIDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED.

8

In the hours before

Local storm report, May 16, 11:23 PM EDT, 5 hours 13 minutes before

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Special weather statement, May 17, 4:00 AM EDT, 36 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON NC
400 AM EDT THU MAY 17 2012

NCZ087-096-099-105>107-109-171200-
ROBESON-BLADEN-COLUMBUS-INLAND PENDER-COASTAL PENDER-
INLAND NEW HANOVER-INLAND BRUNSWICK-
INCLUDING THE CITIES OF...LUMBERTON...ELIZABETHTOWN...
WHITEVILLE...BURGAW...SURF CITY...TOPSAIL BEACH...WILMINGTON...
LELAND...BOLIVIA...SHALLOTTE
400 AM EDT THU MAY 17 2012

...PATCHY DENSE FOG EARLY THIS MORNING...

PATCHES OF DENSE FOG WILL REDUCE VISIBILITIES LOCALLY TO A
QUARTER MILE OR LESS THROUGH 800 AM. EARLY MORNING COMMUTERS
SHOULD USE EXTRA CAUTION SINCE POCKETS OF SHARPLY REDUCED
VISIBILITIES MAY APPEAR SUDDENLY ACROSS ROADWAYS AND HIGHWAYS.

REDUCE YOUR SPEED...USE YOUR LOW BEAM HEADLIGHTS...AND LEAVE
PLENTY OF DISTANCE BETWEEN YOUR VEHICLE AND THOSE AROUND YOU.

THE PATCHY DENSE FOG IS EXPECTED TO BURN OFF BY 800 AM.

8

Special weather statement, May 17, 4:36 AM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON NC
436 AM EDT THU MAY 17 2012

SCZ032-033-039-053>055-170930-
COASTAL HORRY-FLORENCE-INLAND GEORGETOWN-INLAND
HORRY-MARION-WILLIAMSBURG-
436 AM EDT THU MAY 17 2012

...THUNDERSTORMS WILL PRODUCE HEAVY RAIN OVER HORRY...GEORGETOWN...
AND WILLIAMSBURG COUNTIES THROUGH 530 AM EDT...

AT 435 AM EDT...DOPPLER RADAR INDICATED THUNDERSTORMS FROM EASTERN
WILLIAMSBURG COUNTY TO CENTRAL HORRY...MOVING NORTHEAST AT 10 MPH.

SOME LOCATIONS IMPACTED INCLUDE CONWAY...RED HILL...SOCASTEE...
ADRIAN...ALLSBROOK...ANDREWS...BAYBORO...BROOKSVILLE...BUCKSPORT...
BUCKSVILLE...DONGOLA AND EARLE.

THIS STORM WILL PRODUCE HEAVY RAINFALL...WHICH WILL CAUSE MINOR
FLOODING OF LOW LYING AREAS INCLUDING DITCHES...CREEKS...ROADWAYS AND
AREAS OF POOR DRAINAGE. AVOID THESE AREAS AND DO NOT CROSS FLOODED
ROADS. MOTORISTS SHOULD ALSO REDUCE DRIVING SPEEDS TO AVOID
HYDROPLANING.

&&

LAT...LON 3360 7980 3416 7892 3391 7861 3358 7910
      3361 7910 3361 7912 3349 7924 3331 7950
TIME...MOT...LOC 0831Z 224DEG 11KT 3358 7950

MJC

The office that day

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

Issued	Product	Office	Counties	Lasted
May 16, 8:08 PM EDT	Areal Flood Advisory	ILM	Georgetown	31 min
May 16, 8:37 PM EDT	Areal Flood Warning	ILM	Georgetown	3 hr
May 17, 6:26 AM EDT	Special Weather Statement	ILM	Florence	34 min
May 17, 7:04 AM EDT	River Flood Warning	ILM	Florence, Marion	5 days
May 17, 12:01 PM EDT	Areal Flood Advisory	ILM	Darlington, Florence	56 min
May 17, 12:35 PM EDT	Areal Flood Warning	ILM	Darlington, Florence	28 min
May 17, 12:55 PM EDT	Flash Flood Warning	ILM	Darlington, Florence	2 hr
May 17, 1:10 PM EDT	Areal Flood Advisory	ILM	Florence, Williamsburg	52 min
May 17, 2:00 PM EDT	Areal Flood Warning	ILM	Dillon, Florence, Marion, Williamsburg	2 hr
May 17, 2:56 PM EDT	Areal Flood Advisory	ILM	Florence, Horry, Marion	113 min
May 17, 3:04 PM EDT	Areal Flood Advisory	ILM	Dillon	100 min
May 17, 4:27 PM EDT	Areal Flood Advisory	ILM	Dillon, Horry, Marion	2 hr
May 17, 6:15 PM EDT	Special Weather Statement	ILM	Pender	60 min
May 17, 6:48 PM EDT	Areal Flood Advisory	ILM	Bladen, Pender	53 min

Nearby

Special Weather Statements in South Carolina, 2012 Every 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.