Alert archive / South Carolina / Special Weather Statements in 2012

Special Weather Statement, NWS Charleston, SC

August 21, 2012Bamberg County, South Carolina

NWS Charleston, SC issued this special weather statement at Aug 21, 2012, 7:30 PM EDT for Bamberg County, South Carolina. It was in force for 60 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 21, 2012, 7:30 PM EDT (23:30 UTC)
Expired: Aug 21, 2012, 8:30 PM EDT
In force: 60 min
Issued by: NWS Charleston, SC

County Bamberg County, SC

The radar

The Charleston,SC radar (KCLX), 45 km from the middle of the area, began a volume at 23:32 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, 11.5 hours before the alert went out and 289 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: 250 J/kg
Mixed-layer CIN: -65 J/kg
Mixed-layer LCL: 599 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 56 m²/s²
0-3 km storm-relative helicity: 127 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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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 21, 4:52 PM EDT	Special Weather Statement	CHS	Dorchester	23 min
Aug 21, 6:27 PM EDT	Special Weather Statement	CHS	Berkeley	48 min
Aug 21, 6:58 PM EDT	Areal Flood Advisory	CHS	Berkeley	62 min
Aug 21, 7:45 PM EDT	Areal Flood Advisory	CHS	Allendale, Hampton	60 min
Aug 21, 7:58 PM EDT	Areal Flood Advisory	CHS	Berkeley	62 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.