Alert archive / South Carolina / Special Weather Statements in 2011

Special Weather Statement, NWS Charleston, SC

September 28, 2011Georgetown County, South Carolina

NWS Charleston, SC issued this special weather statement at Sep 28, 2011, 4:12 PM EDT for Georgetown County, South Carolina. It was in force for 48 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 28, 2011, 4:12 PM EDT (20:12 UTC)
Expired: Sep 28, 2011, 5:00 PM EDT
In force: 48 min
Issued by: NWS Charleston, SC

County Georgetown County, SC

The radar

The Wilmington radar (KLTX), 146 km from the middle of the area, began a volume at 20:14 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, 8.2 hours before the alert went out and 48 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: 17 J/kg
Mixed-layer CIN: -230 J/kg
Mixed-layer LCL: 1855 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 61 m²/s²
0-3 km storm-relative helicity: 59 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 Charleston, SC wrote its last area forecast discussion before this special weather statement went out at Sep 28, 2:08 PM EDT, 2 hours 4 minutes earlier.

Area forecast discussion, Sep 28, 2:08 PM EDT, 2 hours 4 minutes before

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Hazardous weather outlook, Sep 28, 11:17 AM EDT, 4 hours 55 minutes before

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In the hours before

Local storm report, Sep 28, 2:54 PM EDT, 1 hour 18 minutes before

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Local storm report, Sep 28, 2:56 PM EDT, 1 hour 16 minutes before

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Local storm report, Sep 28, 2:59 PM EDT, 1 hour 13 minutes before

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Special weather statement, Sep 28, 3:27 PM EDT, 45 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
327 PM EDT WED SEP 28 2011

SCZ045-050-282015-
CHARLESTON-INLAND BERKELEY-
327 PM EDT WED SEP 28 2011

...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF CHARLESTON AND
BERKELEY COUNTIES THROUGH 415 PM EDT...

AT 323 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM...NEAR DUNES WEST...MOVING EAST AT 20 MPH.

SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE...
AWENDAW...BULL ISLAND...CAPE ISLAND...CAPE ROMAIN...CAPERS INLET...
GARRIS LANDING...HAMPTON PLANTATION STATE PARK...LIGHTHOUSE ISLAND...
MCCLELLANVILLE...MOUNT PLEASANT REGIONAL AIRPORT...PRICE INLET AND
SANTEE COASTAL RESERVE...

PREPARE NOW FOR THE FOLLOWING HAZARDS...
GUSTY WINDS OF 40 TO 50 MPH...
DIME SIZE HAIL...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AS STORMS APPROACH.
BE READY TO TAKE IMMEDIATE ACTION IN CASE A SEVERE THUNDERSTORM
WARNING IS ISSUED FOR YOUR LOCATION.

&&

LAT...LON 3314 7926 3308 7933 3300 7936 3299 7950
      3303 7952 3301 7955 3299 7954 3301 7955
      3301 7957 3294 7961 3294 7957 3297 7955
      3290 7957 3281 7977 3297 7985 3306 7985
      3325 7948 3316 7935
TIME...MOT...LOC 1928Z 262DEG 17KT 3297 7975

Special weather statement, Sep 28, 4:02 PM EDT, 10 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
402 PM EDT WED SEP 28 2011

GAZ088-SCZ040-282030-
ALLENDALE-SCREVEN-
402 PM EDT WED SEP 28 2011

...GUSTY WINDS WITH SHOWERS AND THUNDERSTORMS WILL IMPACT PORTIONS
OF SCREVEN AND ALLENDALE COUNTIES THROUGH 430 PM EDT...

AT 359 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SHOWERS AND THUNDERSTORMS...ALONG A LINE EXTENDING FROM 6 MILES
NORTH OF MILLETT TO MILLETT...MOVING EAST AT 25 MPH.

SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE...
ALLENDALE...APPLETON...MARTIN...MILLETT AND SEIGLING...

PREPARE NOW FOR THE FOLLOWING HAZARDS...
GUSTY WINDS OF 40 TO 50 MPH...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ALTHOUGH LITTLE OR NO LIGHTNING IS OCCURRING...THIS STORM IS CAPABLE
OF PRODUCING GUSTY WINDS WHICH MAY BLOW OVER TENTS...OUTDOOR
FURNITURE...AND HANGING OBJECTS. IF TIME PERMITS SECURE VULNERABLE
OBJECTS AND GO INSIDE A STURDY SHELTER.

BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AS STORMS APPROACH.
BE READY TO TAKE IMMEDIATE ACTION IN CASE A SEVERE THUNDERSTORM
WARNING IS ISSUED FOR YOUR LOCATION.

&&

LAT...LON 3302 8159 3304 8157 3305 8157 3308 8162
      3310 8162 3316 8154 3311 8136 3312 8123
      3287 8133 3299 8163
TIME...MOT...LOC 2002Z 277DEG 20KT 3316 8150 3304 8158

Special weather statement, Sep 28, 4:12 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
412 PM EDT WED SEP 28 2011

SCZ045-050-282100-
CHARLESTON-INLAND BERKELEY-
412 PM EDT WED SEP 28 2011

...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF CHARLESTON AND
BERKELEY COUNTIES THROUGH 500 PM EDT...

AT 408 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS...ALONG A LINE EXTENDING FROM TIBWIN TO GARRIS
LANDING...MOVING NORTHEAST AT 10 MPH.

SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE...
AWENDAW...BULL ISLAND...CAPE ISLAND...CAPE ROMAIN...GARRIS LANDING...
HAMPTON PLANTATION STATE PARK...LIGHTHOUSE ISLAND...MCCLELLANVILLE
AND SANTEE COASTAL RESERVE...

PREPARE NOW FOR THE FOLLOWING HAZARDS...
GUSTY WINDS OF 40 TO 50 MPH...
DIME SIZE HAIL...
FREQUENT CLOUD TO GROUND LIGHTNING...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD-TO-GROUND LIGHTNING IS OCCURRING. POSTPONE OUTDOOR
ACTIVITIES PROMPTLY. SEEK SHELTER INSIDE AN ENCLOSED BUILDING.

BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AS STORMS APPROACH.
BE READY TO TAKE IMMEDIATE ACTION IN CASE A SEVERE THUNDERSTORM
WARNING IS ISSUED FOR YOUR LOCATION.

&&

LAT...LON 3308 7933 3300 7936 3299 7950 3303 7953
      3299 7954 3298 7954 3300 7954 3301 7957
      3294 7961 3294 7957 3297 7955 3290 7957
      3286 7974 3317 7967 3326 7954 3324 7945
      3316 7935 3314 7926
TIME...MOT...LOC 2013Z 243DEG 10KT 3313 7951 3295 7965

The office that day

Everything else NWS Charleston, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 27, 11:13 PM EDT	Special Weather Statement	CHS	Jenkins, Screven	32 min
Sep 27, 11:48 PM EDT	Special Weather Statement	CHS	Evans	42 min
Sep 27, 11:57 PM EDT	Special Weather Statement	CHS	Screven	33 min
Sep 28, 12:22 AM EDT	Special Weather Statement	CHS	Bulloch	38 min
Sep 28, 12:45 AM EDT	Severe Thunderstorm Warning	CHS	Bulloch, Effingham, Screven	60 min
Sep 28, 1:16 AM EDT	Severe Thunderstorm Warning	CHS	Bulloch, Effingham, Screven	59 min
Sep 28, 2:44 AM EDT	Special Marine Warning	CHS		2 hr
Sep 28, 4:24 AM EDT	Coastal Flood Advisory	CHS		7 hr
Sep 28, 5:08 AM EDT	Special Marine Warning	CHS		2 hr
Sep 28, 6:26 PM EDT	Special Weather Statement	CHS	Effingham	34 min
Sep 27, 8:11 PM EDT	Special Weather Statement	CHS	Berkeley, Dorchester	34 min
Sep 27, 8:31 PM EDT	Special Weather Statement	CHS	Berkeley	29 min
Sep 27, 8:34 PM EDT	Special Weather Statement	CHS	Colleton	26 min
Sep 27, 8:49 PM EDT	Special Weather Statement	CHS	Berkeley	26 min
Sep 27, 11:38 PM EDT	Special Weather Statement	CHS	Allendale	52 min
Sep 28, 12:27 AM EDT	Special Weather Statement	CHS	Allendale	48 min
Sep 28, 1:42 AM EDT	Severe Thunderstorm Warning	CHS	Beaufort, Colleton, Hampton, Jasper	63 min
Sep 28, 2:42 AM EDT	Severe Thunderstorm Warning	CHS	Beaufort, Charleston, Colleton	48 min
Sep 28, 7:17 AM EDT	Special Weather Statement	CHS	Berkeley	43 min
Sep 28, 3:27 PM EDT	Special Weather Statement	CHS	Berkeley	48 min
Sep 28, 4:02 PM EDT	Special Weather Statement	CHS	Allendale	28 min
Sep 28, 4:14 PM EDT	Special Weather Statement	CHS	Allendale	31 min
Sep 28, 4:56 PM EDT	Special Weather Statement	CHS	Berkeley	49 min
Sep 28, 5:08 PM EDT	Areal Flood Advisory	CHS	Charleston	32 min
Sep 28, 5:14 PM EDT	Special Weather Statement	CHS	Bamberg	46 min
Sep 28, 5:23 PM EDT	Severe Thunderstorm Warning	CHS	Colleton, Dorchester	67 min
Sep 28, 6:22 PM EDT	Severe Thunderstorm Warning	CHS	Berkeley, Dorchester	53 min
Sep 28, 7:49 PM EDT	Special Weather Statement	CHS	Berkeley	26 min

Nearby

Special Weather Statements in South Carolina, 2011 Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.