Alert archive / South Carolina / Special Weather Statements in 2012

Special Weather Statement, NWS Charleston, SC

August 9, 2012Berkeley County, South Carolina

NWS Charleston, SC issued this special weather statement at Aug 9, 2012, 10:21 PM EDT for Berkeley County, South Carolina. It was in force for 24 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 9, 2012, 10:21 PM EDT (02:21 UTC)
Expired: Aug 9, 2012, 10:45 PM EDT
In force: 24 min
Issued by: NWS Charleston, SC

County Berkeley County, SC

The radar

The Charleston,SC radar (KCLX), 146 km from the middle of the area, began a volume at 02:21 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, 2.4 hours before the alert went out and 45 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: 1243 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 943 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 46 m²/s²
0-3 km storm-relative helicity: 43 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 9, 9:49 PM EDT, 32 minutes earlier.

Area forecast discussion, Aug 9, 9:49 PM EDT, 32 minutes before

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Hazardous weather outlook, Aug 9, 4:23 AM EDT, 17 hours 58 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE CHARLESTON SC
423 AM EDT THU AUG 9 2012

AMZ330-350-352-354-374-GAZ087-088-099>101-114>119-137>141-SCZ040-
042>045-047>052-100830-
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-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 COLLETON-DORCHESTER-INLAND BERKELEY-
INLAND JASPER-BEAUFORT-COASTAL COLLETON-CHARLESTON-COASTAL JASPER-
TIDAL BERKELEY-
423 AM EDT THU AUG 9 2012

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

.DAY ONE...TODAY AND TONIGHT.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

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

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 9, 8:24 PM EDT, 1 hour 57 minutes before

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Special weather statement, Aug 9, 8:29 PM EDT, 1 hour 52 minutes before

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Local storm report, Aug 9, 8:31 PM EDT, 1 hour 50 minutes before

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Local storm report, Aug 9, 8:40 PM EDT, 1 hour 41 minutes before

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Special weather statement, Aug 9, 9:27 PM EDT, 54 minutes before

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Special weather statement, Aug 9, 10:21 PM EDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 9, 9:40 PM EDT	Special Marine Warning	CHS		2 hr
Aug 9, 11:35 PM EDT	Special Marine Warning	CHS		115 min
Aug 10, 1:08 PM EDT	Small Craft Advisory	CHS		15 hr
Aug 9, 8:08 PM EDT	Special Weather Statement	CHS	Beaufort	52 min
Aug 9, 8:24 PM EDT	Special Weather Statement	CHS	Colleton	51 min
Aug 9, 8:29 PM EDT	Special Weather Statement	CHS	Colleton, Dorchester	46 min
Aug 9, 9:27 PM EDT	Special Weather Statement	CHS	Berkeley, Charleston, Dorchester	63 min
Aug 10, 1:04 PM EDT	Special Weather Statement	CHS	Berkeley	26 min
Aug 10, 6:27 PM EDT	Special Weather Statement	CHS	Charleston	48 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.