Alert archive / Georgia / Freeze Watches in 2009

Freeze Watch 2, NWS Atlanta, GA

October 17, 200956 counties in Georgia

NWS Atlanta, GA issued this freeze watch at Oct 17, 2009, 5:00 AM EDT for 56 counties in Georgia. It took effect at Oct 19, 2009, 4:00 AM EDT. It was in force for .

The area

The counties it named.

The facts

Issued: Oct 17, 2009, 5:00 AM EDT (09:00 UTC)
In effect from: Oct 19, 2009, 4:00 AM EDT
Expired: Oct 18, 2009, 5:19 AM EDT
In force
Issued by: NWS Atlanta, GA

All 56 counties

Banks County, GA, Barrow County, GA, Bartow County, GA, Butts County, GA, Carroll County, GA, Catoosa County, GA, Chattooga County, GA, Cherokee County, GA, Clarke County, GA, Clayton County, GA, Cobb County, GA, Coweta County, GA, Dade County, GA, Dawson County, GA, DeKalb County, GA, Douglas County, GA, Fannin County, GA, Fayette County, GA, Floyd County, GA, Forsyth County, GA, Fulton County, GA, Gilmer County, GA, Gordon County, GA, Greene County, GA, Gwinnett County, GA, Hall County, GA, Haralson County, GA, Heard County, GA, Henry County, GA, Jackson County, GA, Jasper County, GA, Lamar County, GA, Lumpkin County, GA, Madison County, GA, Meriwether County, GA, Morgan County, GA, Murray County, GA, Newton County, GA, Oconee County, GA, Oglethorpe County, GA, Paulding County, GA, Pickens County, GA, Pike County, GA, Polk County, GA, Putnam County, GA, Rockdale County, GA, Spalding County, GA, Taliaferro County, GA, Towns County, GA, Troup County, GA, Union County, GA, Walker County, GA, Walton County, GA, White County, GA, Whitfield County, GA, Wilkes County, GA

The radar

The Atlanta radar (KFFC), 74 km from the middle of the area, began a volume at 08:58 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

Nashville Metro, TN (KBNA), launched 00:00Z, 9.0 hours before the alert went out and 321 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: 7 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 535 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: -27 m²/s²
0-3 km storm-relative helicity: 16 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 freeze watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Atlanta, GA wrote its last area forecast discussion before this freeze watch went out at Oct 17, 4:45 AM EDT, 15 minutes earlier.

Area forecast discussion, Oct 17, 4:45 AM EDT, 15 minutes before

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Hazardous weather outlook, Oct 16, 5:00 PM EDT, 12 hours before

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In the hours before

Local storm report, Oct 16, 11:35 PM EDT, 5 hours 25 minutes before

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Local storm report, Oct 16, 11:41 PM EDT, 5 hours 19 minutes before

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Nearby

Freeze Watches in Georgia, 2009 Every freeze watch 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.