Alert archive / South Carolina / Special Weather Statements in 2011

Special Weather Statement, NWS Charleston, SC

August 23, 2011Charleston County, South Carolina

NWS Charleston, SC issued this special weather statement at Aug 23, 2011, 1:59 PM EDT for Charleston County, South Carolina. It was in force for 31 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 23, 2011, 1:59 PM EDT (17:59 UTC)
Expired: Aug 23, 2011, 2:30 PM EDT
In force: 31 min
Issued by: NWS Charleston, SC

County Charleston County, SC

The radar

The Charleston,SC radar (KCLX), 57 km from the middle of the area, began a volume at 17:58 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

Jacksonville, FL (KJAX), launched 12:00Z, 6.0 hours before the alert went out and 272 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: 2055 J/kg
Mixed-layer CIN: -55 J/kg
Mixed-layer LCL: 938 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 39 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 23, 11:13 AM EDT, 2 hours 46 minutes earlier.

Area forecast discussion, Aug 23, 11:13 AM EDT, 2 hours 46 minutes before

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Hazardous weather outlook, Aug 23, 3:20 AM EDT, 10 hours 39 minutes before

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In the hours before

Local storm report, Aug 23, 9:30 AM EDT, 4 hours 29 minutes before

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Special weather statement, Aug 23, 1:32 PM EDT, 27 minutes before

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Special weather statement, Aug 23, 1:59 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 22, 8:11 PM EDT	Special Weather Statement	CHS	Tattnall	34 min
Aug 22, 8:20 PM EDT	Special Weather Statement	CHS	Candler	25 min
Aug 22, 8:25 PM EDT	Special Marine Warning	CHS		39 min
Aug 22, 8:37 PM EDT	Special Weather Statement	CHS	Candler	38 min
Aug 22, 10:01 PM EDT	Special Weather Statement	CHS	Screven	29 min
Aug 23, 6:30 AM EDT	Special Marine Warning	CHS		90 min
Aug 23, 7:10 AM EDT	Special Marine Warning	CHS		2 hr
Aug 23, 7:50 AM EDT	Special Marine Warning	CHS		92 min
Aug 23, 1:26 PM EDT	Special Marine Warning	CHS		98 min
Aug 23, 4:29 PM EDT	Special Weather Statement	CHS	Effingham	46 min
Aug 23, 5:17 PM EDT	Special Weather Statement	CHS	Bryan, Chatham	28 min
Aug 23, 5:46 PM EDT	Special Weather Statement	CHS	Bryan, Chatham, Evans	29 min
Aug 23, 6:08 PM EDT	Special Weather Statement	CHS	Bryan, Chatham, Evans, Liberty, Long, Tattnall	52 min
Aug 23, 7:29 PM EDT	Special Weather Statement	CHS	Long	46 min
Aug 22, 9:27 PM EDT	Special Weather Statement	CHS	Allendale, Hampton	33 min
Aug 22, 10:32 PM EDT	Severe Thunderstorm Warning	CHS	Colleton, Hampton, Jasper	58 min
Aug 22, 11:50 PM EDT	Special Weather Statement	CHS	Allendale	25 min
Aug 23, 1:32 PM EDT	Special Weather Statement	CHS	Charleston	28 min
Aug 23, 3:00 PM EDT	Special Weather Statement	CHS	Beaufort	45 min
Aug 23, 3:39 PM EDT	Special Weather Statement	CHS	Beaufort, Jasper	51 min
Aug 23, 5:27 PM EDT	Special Weather Statement	CHS	Berkeley	48 min
Aug 23, 6:11 PM EDT	Special Weather Statement	CHS	Berkeley	49 min
Aug 23, 6:51 PM EDT	Special Weather Statement	CHS	Dorchester	24 min
Aug 23, 7:14 PM EDT	Special Weather Statement	CHS	Dorchester	46 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.