Alert archive / South Carolina / Special Weather Statements in 2013

Special Weather Statement, NWS Charleston, SC

March 31, 2013Berkeley County, Dorchester County, South Carolina

NWS Charleston, SC issued this special weather statement at Mar 31, 2013, 6:55 PM EDT for Berkeley County, Dorchester County, South Carolina. It was in force for 35 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: Mar 31, 2013, 6:55 PM EDT (22:55 UTC)
Expired: Mar 31, 2013, 7:30 PM EDT
In force: 35 min
Issued by: NWS Charleston, SC

Counties Berkeley County, SC, Dorchester County, SC

The radar

The Charleston,SC radar (KCLX), 99 km from the middle of the area, began a volume at 22:55 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, 10.9 hours before the alert went out and 46 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1669 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 151 m²/s²
0-3 km storm-relative helicity: 186 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 Mar 31, 6:52 PM EDT, 3 minutes earlier.

Area forecast discussion, Mar 31, 6:52 PM EDT, 3 minutes before

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Hazardous weather outlook, Mar 31, 3:45 PM EDT, 3 hours 10 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHARLESTON SC
345 PM EDT SUN MAR 31 2013

AMZ330-350-352-354-374-SCZ043>045-049-050-052-011945-
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-
WATERS FROM SAVANNAH GA TO ALTAMAHA SOUND GA EXTENDING FROM 20 TO
60 NM-INLAND COLLETON-DORCHESTER-INLAND BERKELEY-COASTAL COLLETON-
CHARLESTON-TIDAL BERKELEY-
345 PM EDT SUN MAR 31 2013

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

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

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ASSISTANCE IS NOT ANTICIPATED AT THIS TIME.

GAZ087-088-099>101-114>119-137>141-SCZ040-042-047-048-051-011945-
JENKINS-SCREVEN-CANDLER-BULLOCH-EFFINGHAM-TATTNALL-EVANS-
INLAND BRYAN-COASTAL BRYAN-INLAND CHATHAM-COASTAL CHATHAM-LONG-
INLAND LIBERTY-COASTAL LIBERTY-INLAND MCINTOSH-COASTAL MCINTOSH-
ALLENDALE-HAMPTON-INLAND JASPER-BEAUFORT-COASTAL JASPER-
345 PM EDT SUN MAR 31 2013

...ISOLATED SEVERE THUNDERSTORMS POSSIBLE THROUGH THIS EVENING...

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

SEVERE WEATHER...A WARM AND MOIST AIR MASS WILL SUPPORT SCATTERED
SHOWERS AND THUNDERSTORMS THROUGH THIS EVENING ACROSS SOUTHEAST
GEORGIA. A FEW STORMS COULD BECOME SEVERE WITH LOCALLY DAMAGING
WIND GUSTS AND LARGE HAIL. THE SEVERE WEATHER THREAT WILL BEGIN TO
DIMINISH AFTER DARK.

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

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ASSISTANCE IS NOT ANTICIPATED AT THIS TIME.

In the hours before

Special weather statement, Mar 31, 5:49 PM EDT, 1 hour 6 minutes before

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Special weather statement, Mar 31, 6:03 PM EDT, 52 minutes before

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Special weather statement, Mar 31, 6:13 PM EDT, 42 minutes before

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Special weather statement, Mar 31, 6:34 PM EDT, 21 minutes before

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Special weather statement, Mar 31, 6:42 PM EDT, 13 minutes before

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Special weather statement, Mar 31, 6:55 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHARLESTON SC
655 PM EDT SUN MAR 31 2013

SCZ043>045-312330-
DORCHESTER-INLAND BERKELEY-INLAND COLLETON-
655 PM EDT SUN MAR 31 2013

...STRONG THUNDERSTORMS WILL IMPACT PORTIONS OF DORCHESTER...BERKELEY
AND COLLETON COUNTIES THROUGH 730 PM EDT...

AT 650 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS...ALONG A LINE EXTENDING FROM SPRINGTOWN TO
HARLEYVILLE...MOVING EAST AT 50 MPH.

SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE...
BONNEAU...BONNEAU BEACH...COLLEGE PARK...CROSS...DORCHESTER...
EADYTOWN...EASTERN LAKE MARION...GIVHANS FERRY STATE PARK...
HARLEYVILLE...INDIAN FIELD...JEDBURG...KNIGHTSVILLE...MONCKS
CORNER...NORTHERN LAKE MOULTRIE...OLD SANTEE CANAL STATE PARK...
PINOPOLIS...REEVESVILLE...RIDGEVILLE...SAINT GEORGE...SANGAREE...
SOUTHERN LAKE MOULTRIE AND SUMMERVILLE...

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

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 3321 7987 3307 7993 3301 8013 3302 8017
      3299 8017 3309 8076 3329 8060 3334 8051
      3329 8048 3326 8043 3327 8037 3328 8035
      3327 8030 3330 8026 3344 8023 3346 8015
      3350 8013 3351 8008
TIME...MOT...LOC 2255Z 270DEG 43KT 3309 8058 3321 8036

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 31, 6:03 PM EDT	Special Weather Statement	CHS	Jasper	27 min
Mar 31, 6:13 PM EDT	Special Weather Statement	CHS	Hampton	32 min
Mar 31, 6:42 PM EDT	Special Weather Statement	CHS	Colleton	33 min
Mar 31, 6:58 PM EDT	Special Weather Statement	CHS	Colleton	32 min
Mar 31, 7:00 PM EDT	Special Weather Statement	CHS	Allendale	30 min
Mar 31, 7:15 PM EDT	Special Weather Statement	CHS	Colleton	15 min
Mar 31, 7:29 PM EDT	Special Weather Statement	CHS	Berkeley, Colleton, Dorchester	61 min
Mar 31, 7:31 PM EDT	Special Weather Statement	CHS	Allendale	44 min
Mar 31, 5:49 PM EDT	Special Weather Statement	CHS	Effingham	26 min
Mar 31, 6:34 PM EDT	Special Weather Statement	CHS	Candler	26 min

Nearby

Special Weather Statements in South Carolina, 2013 Every special weather statement in 2013

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.