Alert archive / Georgia / Severe Thunderstorm Watches in 2005

Severe Thunderstorm Watch 28

February 21, 200510 counties in Alabama; 66 counties in Georgia; 9 counties in South Carolina

The Storm Prediction Center issued this severe thunderstorm watch at Feb 21, 2005, 6:05 PM CST for 10 counties in Alabama; 66 counties in Georgia; 9 counties in South Carolina. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued: Feb 21, 2005, 6:05 PM CST (00:05 UTC)
Expired: Feb 22, 2005, 1:00 AM CST
In force: 7 hr
Issued by: the Storm Prediction Center

All 85 counties

Blount County, AL, Calhoun County, AL, Cherokee County, AL, Cleburne County, AL, Cullman County, AL, DeKalb County, AL, Etowah County, AL, Lawrence County, AL, Marshall County, AL, Morgan County, AL, Baldwin County, GA, Banks County, GA, Barrow County, GA, Bartow County, GA, Bibb County, GA, Burke County, GA, Butts County, GA, Carroll County, GA, Chattooga County, GA, Cherokee County, GA, Clarke County, GA, Clayton County, GA, Cobb County, GA, Columbia County, GA, Coweta County, GA, Dawson County, GA, DeKalb County, GA, Douglas County, GA, Elbert County, GA, Fayette County, GA, Floyd County, GA, Forsyth County, GA, Franklin County, GA, Fulton County, GA, Glascock County, GA, Gordon County, GA, Greene County, GA, Gwinnett County, GA, Hall County, GA, Hancock County, GA, Haralson County, GA, Heard County, GA, Henry County, GA, Jackson County, GA, Jasper County, GA, Jefferson County, GA, Jenkins County, GA, Johnson County, GA, Jones County, GA, Lamar County, GA, Lincoln County, GA, Lumpkin County, GA, Madison County, GA, McDuffie County, GA, Monroe County, GA, Morgan 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, Richmond County, GA, Rockdale County, GA, Screven County, GA, Spalding County, GA, Taliaferro County, GA, Twiggs County, GA, Upson County, GA, Walton County, GA, Warren County, GA, Washington County, GA, Wilkes County, GA, Wilkinson County, GA, Aiken County, SC, Allendale County, SC, Bamberg County, SC, Barnwell County, SC, Charleston County, SC, Colleton County, SC, Edgefield County, SC, Hampton County, SC, McCormick County, SC

The radar

The Atlanta radar (KFFC), 94 km from the middle of the area, began a volume at 00:06 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.

Warnings issued inside it

51 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
Feb 21, 6:17 PM CST	Severe Thunderstorm Warning	FFC	Bartow	28 min
Feb 21, 6:19 PM CST	Severe Thunderstorm Warning	FFC	Clarke, Oconee	41 min
Feb 21, 6:30 PM CST	Severe Thunderstorm Warning	FFC	Walton	45 min
Feb 21, 6:31 PM CST	Severe Thunderstorm Warning	FFC	Jefferson, Washington	44 min
Feb 21, 6:36 PM CST	Severe Thunderstorm Warning	FFC	Cherokee	24 min
Feb 21, 6:42 PM CST	Severe Thunderstorm Warning	HUN	Marshall	34 min
Feb 21, 6:43 PM CST	Severe Thunderstorm Warning	FFC	DeKalb, Gwinnett	32 min
Feb 21, 6:52 PM CST	Severe Thunderstorm Warning	FFC	Morgan	38 min
Feb 21, 6:55 PM CST	Severe Thunderstorm Warning	FFC	Greene, Oglethorpe	50 min
Feb 21, 7:01 PM CST	Severe Thunderstorm Warning	FFC	Rockdale	29 min
Feb 21, 7:07 PM CST	Severe Thunderstorm Warning	CAE	Burke	23 min
Feb 21, 7:10 PM CST	Severe Thunderstorm Warning	HUN	DeKalb	50 min
Feb 21, 7:14 PM CST	Severe Thunderstorm Warning	HUN	Cullman	46 min
Feb 21, 7:14 PM CST	Severe Thunderstorm Warning	CHS	Jenkins	49 min
Feb 21, 7:15 PM CST	Severe Thunderstorm Warning	FFC	Walton	30 min
Feb 21, 7:23 PM CST	Severe Thunderstorm Warning	FFC	Cobb	37 min
Feb 21, 7:23 PM CST	Severe Thunderstorm Warning	FFC	Taliaferro, Wilkes	37 min
Feb 21, 7:26 PM CST	Severe Thunderstorm Warning	CHS	Allendale, Hampton	34 min
Feb 21, 7:30 PM CST	Severe Thunderstorm Warning	FFC	Fulton	30 min
Feb 21, 7:35 PM CST	Severe Thunderstorm Warning	FFC	Morgan, Newton	40 min
Feb 21, 7:43 PM CST	Severe Thunderstorm Warning	FFC	DeKalb	32 min
Feb 21, 7:44 PM CST	Severe Thunderstorm Warning	HUN	Marshall	46 min
Feb 21, 7:47 PM CST	Severe Thunderstorm Warning	CHS	Screven	45 min
Feb 21, 7:48 PM CST	Severe Thunderstorm Warning	BMX	Blount	42 min
Feb 21, 7:52 PM CST	Severe Thunderstorm Warning	FFC	Warren	23 min
Feb 21, 7:55 PM CST	Severe Thunderstorm Warning	CAE	McDuffie	35 min
Feb 21, 7:58 PM CST	Severe Thunderstorm Warning	CHS	Colleton, Hampton	51 min
Feb 21, 8:08 PM CST	Severe Thunderstorm Warning	FFC	Rockdale	37 min
Feb 21, 8:08 PM CST	Severe Thunderstorm Warning	CHS	Allendale	52 min
Feb 21, 8:12 PM CST	Severe Thunderstorm Warning	CAE	Columbia	33 min
Feb 21, 8:19 PM CST	Severe Thunderstorm Warning	FFC	Greene	26 min
Feb 21, 8:20 PM CST	Severe Thunderstorm Warning	FFC	Newton	25 min
Feb 21, 8:22 PM CST	Severe Thunderstorm Warning	BMX	Calhoun	38 min
Feb 21, 8:36 PM CST	Severe Thunderstorm Warning	FFC	Hancock	39 min
Feb 21, 8:39 PM CST	Severe Thunderstorm Warning	CAE	Richmond	36 min
Feb 21, 8:44 PM CST	Severe Thunderstorm Warning	BMX	Cleburne	61 min
Feb 21, 8:45 PM CST	Severe Thunderstorm Warning	FFC	Washington	45 min
Feb 21, 8:49 PM CST	Severe Thunderstorm Warning	FFC	Jasper, Morgan	26 min
Feb 21, 9:02 PM CST	Severe Thunderstorm Warning	FFC	Jefferson	43 min
Feb 21, 9:06 PM CST	Severe Thunderstorm Warning	FFC	Putnam	39 min
Feb 21, 9:08 PM CST	Severe Thunderstorm Warning	FFC	Heard	37 min
Feb 21, 9:18 PM CST	Severe Thunderstorm Warning	FFC	Carroll	27 min
Feb 21, 9:32 PM CST	Severe Thunderstorm Warning	CAE	Burke	43 min
Feb 21, 9:34 PM CST	Severe Thunderstorm Warning	FFC	Coweta	26 min
Feb 21, 9:35 PM CST	Severe Thunderstorm Warning	FFC	Fayette	25 min
Feb 21, 9:57 PM CST	Severe Thunderstorm Warning	FFC	Haralson	18 min
Feb 21, 10:03 PM CST	Severe Thunderstorm Warning	FFC	Coweta, Fayette	42 min
Feb 21, 10:03 PM CST	Severe Thunderstorm Warning	FFC	Heard	27 min
Feb 21, 10:23 PM CST	Severe Thunderstorm Warning	FFC	Henry, Newton	52 min
Feb 21, 10:41 PM CST	Severe Thunderstorm Warning	FFC	Meriwether, Pike, Spalding	34 min
Feb 22, 12:42 AM CST	Severe Thunderstorm Warning	CAE	Burke	33 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 0.1 hours before the alert went out and 89 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: 904 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 1003 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 165 m²/s²
0-3 km storm-relative helicity: 233 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 9.9

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 21, 9:40 PM CST	Severe Thunderstorm Watch	SPC	Autauga, Bibb, Bullock, Chambers, Chilton, Coosa and 6 more	6 hr
Feb 21, 9:43 PM CST	Mesoscale Discussion	SPC	Autauga, Barbour, Bibb, Bullock, Chambers, Chilton and 14 more	92 min
Feb 22, 12:39 PM CST	Mesoscale Discussion	SPC	Autauga, Barbour, Bibb, Bullock, Chambers, Chilton and 14 more	2 hr
Feb 22, 2:40 PM CST	Mesoscale Discussion	SPC	Choctaw, Marengo	2 hr

Nearby

Severe Thunderstorm Watches in Georgia, 2005 Severe Thunderstorm Watches in Alabama, 2005 Severe Thunderstorm Watches in South Carolina, 2005 Every severe thunderstorm watch in 2005

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.