Alert archive / South Carolina / Special Weather Statements in 2012

Special Weather Statement, NWS Charleston, SC

August 19, 2012Dorchester County, South Carolina

NWS Charleston, SC issued this special weather statement at Aug 19, 2012, 11:30 AM EDT for Dorchester County, South Carolina. It was in force for 45 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 19, 2012, 11:30 AM EDT (15:30 UTC)
Expired: Aug 19, 2012, 12:15 PM EDT
In force: 45 min
Issued by: NWS Charleston, SC

County Dorchester County, SC

The radar

The Charleston,SC radar (KCLX), 102 km from the middle of the area, began a volume at 15:34 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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 3.5 hours before the alert went out and 309 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: 303 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 598 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 72 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 Aug 19, 10:45 AM EDT, 45 minutes earlier.

Area forecast discussion, Aug 19, 10:45 AM EDT, 45 minutes before

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Hazardous weather outlook, Aug 19, 10:49 AM EDT, 41 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHARLESTON SC
1049 AM EDT SUN AUG 19 2012

AMZ330-350-352-354-GAZ101-116>119-137>141-SCZ042>045-047>052-201500-
CHARLESTON HARBOR-
WATERS FROM SOUTH SANTEE RIVER TO EDISTO BEACH SC OUT 20 NM-
WATERS FROM EDISTO BEACH SC TO SAVANNAH GA OUT 20 NM-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA OUT 20 NM...INCLUDING
GRAYS REEF NATIONAL MARINE SANCTUARY-EFFINGHAM-INLAND BRYAN-
COASTAL BRYAN-INLAND CHATHAM-COASTAL CHATHAM-LONG-INLAND LIBERTY-
COASTAL LIBERTY-INLAND MCINTOSH-COASTAL MCINTOSH-HAMPTON-
INLAND COLLETON-DORCHESTER-INLAND BERKELEY-INLAND JASPER-BEAUFORT-
COASTAL COLLETON-CHARLESTON-COASTAL JASPER-TIDAL BERKELEY-
1049 AM EDT SUN AUG 19 2012

...SEVERE THUNDERSTORM WATCH 585 IN EFFECT UNTIL 6 PM EDT THIS
EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL
WATERS...SOUTHEAST GEORGIA AND SOUTHEAST SOUTH CAROLINA.

.DAY ONE...TODAY AND TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   SEVERE THUNDERSTORM WATCH.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ASSISTANCE IS NOT ANTICIPATED AT THIS TIME.

GAZ087-088-099-100-114-115-SCZ040-201500-
JENKINS-SCREVEN-CANDLER-BULLOCH-TATTNALL-EVANS-ALLENDALE-
1049 AM EDT SUN AUG 19 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST GEORGIA AND
SOUTHEAST SOUTH CAROLINA.

.DAY ONE...TODAY AND TONIGHT.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ASSISTANCE IS NOT ANTICIPATED AT THIS TIME.

AMZ374-201500-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA EXTENDING FROM 20 TO
60 NM-
1049 AM EDT SUN AUG 19 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR ATLANTIC COASTAL WATERS.

.DAY ONE...TODAY AND TONIGHT.

SEVERE THUNDERSTORMS...SEVERE THUNDERSTORMS ARE POSSIBLE OVER THE
GEORGIA OFFSHORE WATERS THIS AFTERNOON. REMAIN ALERT.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ASSISTANCE IS NOT ANTICIPATED AT THIS TIME.

In the hours before

Special weather statement, Aug 19, 9:27 AM EDT, 2 hours 3 minutes before

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Special weather statement, Aug 19, 10:11 AM EDT, 1 hour 19 minutes before

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Special weather statement, Aug 19, 10:50 AM EDT, 40 minutes before

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Special weather statement, Aug 19, 10:54 AM EDT, 36 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
1054 AM EDT SUN AUG 19 2012

GAZ088-100-101-114>116-SCZ040-042-047-191600-
ALLENDALE-BULLOCH-EFFINGHAM-EVANS-HAMPTON-INLAND BRYAN-INLAND
JASPER-SCREVEN-TATTNALL-
1054 AM EDT SUN AUG 19 2012

...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF TATTNALL...SCREVEN...
EVANS...BULLOCH...ALLENDALE...EFFINGHAM...HAMPTON...BRYAN AND JASPER
COUNTIES THROUGH NOON EDT...

AT 1051 AM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED
STRONG THUNDERSTORMS...ALONG A LINE EXTENDING FROM 10 MILES NORTHWEST
OF SHIRLEY TO SHAWNEE TO CLAXTON EVANS COUNTY AIRPORT...MOVING EAST
AT 45 MPH.

SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE...
BAY...CLAXTON...CLYO...DAISY...DENMARK...EBENEZER...EGYPT...GUYTON...
HAGAN...KILDARE...MARLOW...NEVILS...NEWINGTON...PINEORA...RINCON...
SHAWNEE...SPRINGFIELD...STILLWELL...STILSON...ALMEDA INTERSECTION...
COOSAWHATCHIE...CUMMINGS...EARLY BRANCH...ESTILL...FURMAN...
GARNETT...GIFFORD...GILLISONVILLE...GRAHAMVILLE...GRAYS...HAMPTON...
HARDEEVILLE...LAKE WARREN STATE PARK...LENA...LURAY...
MCPHERSONVILLE...PINELAND...PURYSBURGH...RIDGELAND...ROBERTVILLE...
SCOTIA...SHIRLEY...SWITZERLAND...TARBORO...TILLMAN AND VARNVILLE...

PREPARE NOW FOR THE FOLLOWING HAZARDS...
STRONG WINDS OF 45 TO 55 MPH...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH IS ALSO IN EFFECT. THUNDERSTORMS CAN
PRODUCE LARGE HAIL...DAMAGING WINDS...AND ISOLATED TORNADOES
SUDDENLY...SOMETIMES WITH LITTLE OR NO WARNING. BE ALERT FOR RAPIDLY
CHANGING WEATHER CONDITIONS AND BE READY TO ACT QUICKLY IF SEVERE
WEATHER IS OBSERVED OR A WARNING IS ISSUED.

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 3210 8204 3243 8153 3285 8150 3289 8104
      3266 8087 3260 8085 3227 8106
TIME...MOT...LOC 1454Z 259DEG 37KT 3278 8137 3245 8139
          3218 8182

Special weather statement, Aug 19, 11:30 AM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
1130 AM EDT SUN AUG 19 2012

SCZ043>045-191615-
DORCHESTER-INLAND BERKELEY-INLAND COLLETON-
1130 AM EDT SUN AUG 19 2012

...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF DORCHESTER...BERKELEY
AND COLLETON COUNTIES THROUGH 1215 PM EDT...

AT 1129 AM EDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED
STRONG THUNDERSTORMS...ALONG A LINE EXTENDING FROM 21 MILES NORTH OF
HARLEYVILLE TO FRANCIS BEIDLER FOREST TO SIDNEY...MOVING NORTHEAST AT
35 MPH.

SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE...
CROSS...DORCHESTER...EADYTOWN...EASTERN LAKE MARION...HARLEYVILLE...
NORTHERN LAKE MOULTRIE...RIDGEVILLE AND SOUTHERN LAKE MOULTRIE...

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH IS ALSO IN EFFECT. THUNDERSTORMS CAN
PRODUCE LARGE HAIL...DAMAGING WINDS...AND ISOLATED TORNADOES
SUDDENLY...SOMETIMES WITH LITTLE OR NO WARNING. BE ALERT FOR RAPIDLY
CHANGING WEATHER CONDITIONS AND BE READY TO ACT QUICKLY IF SEVERE
WEATHER IS OBSERVED OR A WARNING IS ISSUED.

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 3350 7996 3345 7989 3315 8015 3294 8070
      3321 8046 3332 8054 3333 8052 3334 8050
      3329 8048 3326 8043 3327 8037 3328 8035
      3327 8030 3330 8026 3344 8023 3346 8015
      3350 8013
TIME...MOT...LOC 1530Z 242DEG 29KT 3352 8054 3326 8037
          3305 8054

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 19, 9:27 AM EDT	Special Weather Statement	CHS	Bulloch, Candler	48 min
Aug 19, 10:11 AM EDT	Special Weather Statement	CHS	Bulloch, Jenkins, Screven	49 min
Aug 19, 10:54 AM EDT	Special Weather Statement	CHS	Effingham, Evans	66 min
Aug 19, 11:14 AM EDT	Severe Thunderstorm Warning	CHS	Bulloch, Effingham	46 min
Aug 19, 12:03 PM EDT	Special Weather Statement	CHS	Chatham	42 min
Aug 19, 12:34 PM EDT	Special Marine Warning	CHS		86 min
Aug 19, 1:57 PM EDT	Special Marine Warning	CHS		93 min
Aug 19, 7:24 PM EDT	Special Weather Statement	CHS	Wayne	36 min
Aug 19, 10:50 AM EDT	Special Weather Statement	CHS	Dorchester	40 min
Aug 19, 11:52 AM EDT	Special Weather Statement	CHS	Beaufort, Colleton	38 min
Aug 19, 12:08 PM EDT	Special Weather Statement	CHS	Berkeley	37 min
Aug 19, 12:28 PM EDT	Special Weather Statement	CHS	Colleton	32 min
Aug 19, 12:56 PM EDT	Special Weather Statement	CHS	Charleston	34 min
Aug 19, 1:31 PM EDT	Special Weather Statement	CHS	Berkeley	29 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.