Alert archive / South Carolina / Special Weather Statements in 2016

Special Weather Statement, NWS Wilmington, NC

August 18, 2016Horry County, South Carolina

NWS Wilmington, NC issued this special weather statement at Aug 18, 2016, 2:17 PM EDT for Horry County, South Carolina. It was in force for 58 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: Aug 18, 2016, 2:17 PM EDT (18:17 UTC)
Expired: Aug 18, 2016, 3:15 PM EDT
In force: 58 min
Issued by: NWS Wilmington, NC

County Horry County, SC

The radar

The Wilmington radar (KLTX), 20 km from the middle of the area, began a volume at 18:19 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, 6.3 hours before the alert went out and 174 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: 1318 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 863 m above ground
0-6 km bulk shear: 5 kt
0-1 km storm-relative helicity: -24 m²/s²
0-3 km storm-relative helicity: 21 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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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 Aug 18, 1:28 PM EDT, 49 minutes earlier.

Area forecast discussion, Aug 18, 1:28 PM EDT, 49 minutes before

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Hazardous weather outlook, Aug 18, 3:20 AM EDT, 10 hours 57 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE WILMINGTON NC
320 AM EDT THU AUG 18 2016

NCZ087-096-099-105>110-SCZ017-023-024-032-033-039-053>056-190730-
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-
320 AM EDT THU AUG 18 2016

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

.DAY ONE...TODAY AND TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

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

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

AMZ250-252-254-256-190730-
COASTAL WATERS FROM SURF CITY TO CAPE FEAR NC OUT 20 NM-
COASTAL WATERS FROM CAPE FEAR NC TO LITTLE RIVER INLET SC OUT 20 NM-
COASTAL WATERS FROM LITTLE RIVER INLET TO MURRELLS INLET SC OUT
20 NM-
COASTAL WATERS FROM MURRELLS INLET TO SOUTH SANTEE RIVER SC OUT
20 NM-
320 AM EDT THU AUG 18 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE ADJACENT COASTAL WATERS.

.DAY ONE...TODAY AND TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

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

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Special weather statement, Aug 18, 2:17 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON NC
217 PM EDT THU AUG 18 2016

NCZ099-109-110-SCZ053-054-181915-
INLAND BRUNSWICK NC-COLUMBUS NC-COASTAL BRUNSWICK NC-INLAND HORRY SC-
COASTAL HORRY SC-
217 PM EDT THU AUG 18 2016

...SPECIAL WEATHER STATEMENT FOR SOUTHWESTERN COLUMBUS...SOUTHWESTERN
BRUNSWICK AND NORTHEASTERN HORRY COUNTIES UNTIL 315 PM EDT...

AT 217 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM OVER
LORIS...OR 16 MILES NORTHEAST OF CONWAY...MOVING EAST AT 25 MPH.

HALF INCH HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
NORTH MYRTLE BEACH...SUNSET BEACH...NORTH MYRTLE BEACH AIRPORT...
CHERRY GROVE INLET...LITTLE RIVER...IREDELL...CAROLINA SHORES...
TABOR CITY...LORIS...CALABASH...BETHEL...ALLSBROOK...PIREWAY...
DULAH...BUGHILL...CHERRY GROVE BEACH...RUSSTOWN...LONGWOOD...
BROOKSVILLE AND GORETOWN.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 US ROUTE 17 IN BRUNSWICK COUNTY BETWEEN MILE MARKERS 1 AND 11.
 SC HIGHWAY 31 BETWEEN MILE MARKERS 18 AND 24.
 SC HIGHWAY 22 BETWEEN MILE MARKERS 13 AND 24...AND NEAR MILE MARKER
26.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3405 7831 3385 7857 3379 7874 3399 7903
      3417 7893
TIME...MOT...LOC 1817Z 288DEG 20KT 3403 7889

JDW

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 18, 2:35 PM EDT	Special Weather Statement	ILM	New Hanover	40 min
Aug 18, 3:06 PM EDT	Special Weather Statement	ILM	Darlington	54 min
Aug 18, 3:47 PM EDT	Special Weather Statement	ILM	Florence	43 min
Aug 18, 3:59 PM EDT	Special Weather Statement	ILM	Horry	46 min
Aug 18, 4:18 PM EDT	Special Weather Statement	ILM	Horry, Marion	57 min
Aug 18, 4:20 PM EDT	Areal Flood Advisory	ILM	Horry, Marion	3 hr
Aug 18, 5:03 PM EDT	Severe Thunderstorm Warning	ILM	Florence, Georgetown, Horry, Marion, Williamsburg	57 min
Aug 18, 5:15 PM EDT	Special Weather Statement	ILM	Williamsburg	45 min
Aug 18, 5:55 PM EDT	Severe Thunderstorm Warning	ILM	Georgetown, Williamsburg	43 min

Nearby

Special Weather Statements in South Carolina, 2016 Every special weather statement in 2016

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.