Alert archive / Georgia / Special Weather Statements in 2012

Special Weather Statement, NWS Charleston, SC

October 7, 2012McIntosh County, Georgia

NWS Charleston, SC issued this special weather statement at Oct 7, 2012, 8:50 PM EDT for McIntosh County, Georgia. It was in force for 25 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: Oct 7, 2012, 8:50 PM EDT (00:50 UTC)
Expired: Oct 7, 2012, 9:15 PM EDT
In force: 25 min
Issued by: NWS Charleston, SC

County McIntosh County, GA

The radar

The Jacksonville radar (KJAX), 120 km from the middle of the area, began a volume at 00:52 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 00:00Z, 0.8 hours before the alert went out and 119 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: 1361 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 1020 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 14 m²/s²
0-3 km storm-relative helicity: 14 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.9

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
Oct 7, 9:03 PM EDT	Special Marine Warning	CHS		57 min
Oct 8, 2:02 PM EDT	Special Marine Warning	CHS		63 min
Oct 8, 2:33 PM EDT	Special Marine Warning	CHS		57 min
Oct 8, 6:49 PM EDT	Special Marine Warning	CHS		46 min
Oct 8, 3:23 AM EDT	Areal Flood Advisory	CHS	Beaufort, Charleston, Colleton	82 min
Oct 8, 5:26 PM EDT	Special Weather Statement	CHS	Berkeley	49 min
Oct 8, 6:09 PM EDT	Special Weather Statement	CHS	Berkeley	66 min

Nearby

Special Weather Statements in Georgia, 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.