Alert archive / Georgia / Red Flag Warnings in 2009

Red Flag Warning 14, NWS Greenville-Spartanburg, SC

December 10, 20096 counties in Georgia

NWS Greenville-Spartanburg, SC issued this red flag warning at Dec 10, 2009, 2:56 PM EST for 6 counties in Georgia. It took effect at Dec 11, 2009, 10:00 AM EST. It was in force for 8 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Dec 10, 2009, 2:56 PM EST (19:56 UTC)
In effect from: Dec 11, 2009, 10:00 AM EST
Expired: Dec 11, 2009, 6:00 PM EST
In force: 8 hr
Issued by: NWS Greenville-Spartanburg, SC

Counties Elbert County, GA, Franklin County, GA, Habersham County, GA, Hart County, GA, Rabun County, GA, Stephens County, GA

The radar

The Greer radar (KGSP), 101 km from the middle of the area, began a volume at 19:54 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 7.9 hours before the alert went out and 172 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1914 m above ground
0-6 km bulk shear: 95 kt
0-1 km storm-relative helicity: -255 m²/s²
0-3 km storm-relative helicity: -54 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this red flag warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Greenville-Spartanburg, SC wrote its last area forecast discussion before this red flag warning went out at Dec 10, 12:49 PM EST, 2 hours 7 minutes earlier.

Area forecast discussion, Dec 10, 12:49 PM EST, 2 hours 7 minutes before

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Hazardous weather outlook, Dec 10, 5:24 AM EST, 9 hours 32 minutes before

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The office that day

Everything else NWS Greenville-Spartanburg, SC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 9, 7:07 PM EST	Lake Wind Advisory	GSP	Buncombe, Graham, Haywood, Henderson, Jackson, Macon and 5 more	27 hr
Dec 9, 7:07 PM EST	Wind Advisory	GSP	Avery, Burke, Caldwell, McDowell, Mitchell, Yancey	27 hr

Nearby

Red Flag Warnings in Georgia, 2009 Every red flag warning in 2009

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.