Alert archive / South Carolina / Special Weather Statements in 2012

Special Weather Statement, NWS Charleston, SC

August 28, 2012Charleston County, South Carolina

NWS Charleston, SC issued this special weather statement at Aug 28, 2012, 11:02 AM EDT for Charleston County, South Carolina. It was in force for 58 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 28, 2012, 11:02 AM EDT (15:02 UTC)
Expired: Aug 28, 2012, 12:00 PM EDT
In force: 58 min
Issued by: NWS Charleston, SC

County Charleston County, SC

The radar

The Charleston,SC radar (KCLX), 118 km from the middle of the area, began a volume at 15:01 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, 3.0 hours before the alert went out and 19 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: 773 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 741 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 84 m²/s²
0-3 km storm-relative helicity: 84 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 28, 10:45 AM EDT, 17 minutes earlier.

Area forecast discussion, Aug 28, 10:45 AM EDT, 17 minutes before

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Hazardous weather outlook, Aug 28, 4:16 AM EDT, 6 hours 46 minutes before

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In the hours before

Special weather statement, Aug 28, 11:02 AM 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 28, 3:53 PM EDT	Areal Flood Advisory	CHS	Effingham	2 hr
Aug 28, 4:26 PM EDT	Special Weather Statement	CHS	Bulloch	64 min
Aug 28, 4:51 PM EDT	Special Weather Statement	CHS	Effingham	39 min
Aug 28, 4:56 PM EDT	Severe Thunderstorm Warning	CHS	Effingham	64 min
Aug 28, 5:42 PM EDT	Special Weather Statement	CHS	Evans	48 min
Aug 28, 6:18 PM EDT	Special Weather Statement	CHS	Liberty, Long, McIntosh	57 min
Aug 28, 6:35 PM EDT	Areal Flood Advisory	CHS	Evans, Tattnall	115 min
Aug 28, 6:43 PM EDT	Special Weather Statement	CHS	Tattnall	47 min
Aug 28, 7:35 PM EDT	Flash Flood Warning	CHS	Evans, Liberty, Long, Tattnall	60 min
Aug 28, 10:59 AM EDT	Areal Flood Advisory	CHS	Berkeley, Charleston	2 hr
Aug 28, 11:36 AM EDT	Flash Flood Warning	CHS	Berkeley, Charleston	12 hr
Aug 28, 12:07 PM EDT	Special Weather Statement	CHS	Berkeley	53 min
Aug 28, 12:27 PM EDT	Areal Flood Advisory	CHS	Berkeley, Charleston	3 hr
Aug 28, 12:37 PM EDT	Areal Flood Advisory	CHS	Charleston, Colleton, Dorchester	3 hr
Aug 28, 5:58 PM EDT	Special Weather Statement	CHS	Beaufort, Colleton, Jasper	47 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.