Alert archive / Georgia / Severe Thunderstorm Watches in 2005

Severe Thunderstorm Watch 26

February 21, 20054 states

The Storm Prediction Center issued this severe thunderstorm watch at Feb 21, 2005, 12:45 PM CST for 4 states. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Feb 21, 2005, 12:45 PM CST (18:45 UTC)
Expired
Feb 21, 2005, 6:00 PM CST
In force
5 hr
Issued by
the Storm Prediction Center
All 102 counties

Blount County, AL, Calhoun County, AL, Cherokee County, AL, Cleburne County, AL, Colbert County, AL, Cullman County, AL, DeKalb County, AL, Etowah County, AL, Fayette County, AL, Franklin County, AL, Jackson County, AL, Jefferson County, AL, Lamar County, AL, Lauderdale County, AL, Lawrence County, AL, Limestone County, AL, Madison County, AL, Marion County, AL, Marshall County, AL, Morgan County, AL, St. Clair County, AL, Walker County, AL, Winston County, AL, Banks County, GA, Barrow County, GA, Bartow County, GA, Carroll County, GA, Catoosa County, GA, Chattooga County, GA, Cherokee County, GA, Clarke County, GA, Clayton County, GA, Cobb County, GA, Columbia County, GA, Coweta County, GA, Dade County, GA, Dawson County, GA, DeKalb County, GA, Douglas County, GA, Elbert County, GA, Fannin County, GA, Fayette County, GA, Floyd County, GA, Forsyth County, GA, Franklin County, GA, Fulton County, GA, Gilmer County, GA, Gordon County, GA, Greene County, GA, Gwinnett County, GA, Habersham County, GA, Hall County, GA, Haralson County, GA, Hart County, GA, Henry County, GA, Jackson County, GA, Lincoln County, GA, Lumpkin County, GA, Madison County, GA, McDuffie County, GA, Morgan County, GA, Murray County, GA, Newton County, GA, Oconee County, GA, Oglethorpe County, GA, Paulding County, GA, Pickens County, GA, Polk County, GA, Putnam County, GA, Rabun County, GA, Richmond County, GA, Rockdale County, GA, Stephens County, GA, Taliaferro County, GA, Towns County, GA, Union County, GA, Walker County, GA, Walton County, GA, Warren County, GA, White County, GA, Whitfield County, GA, Wilkes County, GA, Clay County, NC, Abbeville County, SC, Aiken County, SC, Anderson County, SC, Chester County, SC, Edgefield County, SC, Fairfield County, SC, Greenville County, SC, Greenwood County, SC, Laurens County, SC, Lexington County, SC, McCormick County, SC, Newberry County, SC, Oconee County, SC, Pickens County, SC, Richland County, SC, Saluda County, SC, Spartanburg County, SC, Union County, SC, York County, SC

The radar

The Northeast Alabama radar (KHTX), 96 km from the middle of the area, began a volume at 18:48 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

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

IssuedProductOfficeCountiesLasted
Feb 21, 12:45 PM CSTSevere Thunderstorm WarningFFCClarke, Oconee30 min
Feb 21, 1:29 PM CSTSevere Thunderstorm WarningFFCOglethorpe, Wilkes46 min
Feb 21, 2:14 PM CSTSevere Thunderstorm WarningHUNLauderdale, Limestone46 min
Feb 21, 2:25 PM CSTSevere Thunderstorm WarningHUNJackson, Madison50 min
Feb 21, 2:39 PM CSTFlash Flood WarningHUNLimestone3 hr
Feb 21, 2:57 PM CSTFlash Flood WarningHUNMadison3 hr
Feb 21, 2:59 PM CSTSevere Thunderstorm WarningHUNLimestone, Madison46 min
Feb 21, 3:01 PM CSTSevere Thunderstorm WarningHUNDeKalb, Jackson44 min
Feb 21, 3:08 PM CSTSevere Thunderstorm WarningFFCMurray37 min
Feb 21, 3:15 PM CSTSevere Thunderstorm WarningHUNMarshall45 min
Feb 21, 3:19 PM CSTSevere Thunderstorm WarningFFCFannin, Gilmer41 min
Feb 21, 3:26 PM CSTSevere Thunderstorm WarningFFCChattooga, Walker49 min
Feb 21, 3:42 PM CSTSevere Thunderstorm WarningHUNDeKalb, Jackson49 min
Feb 21, 3:45 PM CSTFlash Flood WarningHUNLauderdale3 hr
Feb 21, 3:51 PM CSTSevere Thunderstorm WarningFFCUnion39 min
Feb 21, 3:58 PM CSTSevere Thunderstorm WarningFFCFloyd, Gordon47 min
Feb 21, 4:03 PM CSTSevere Thunderstorm WarningFFCLumpkin, Towns, White27 min
Feb 21, 4:06 PM CSTSevere Thunderstorm WarningHUNColbert, Lauderdale24 min
Feb 21, 4:08 PM CSTSevere Thunderstorm WarningBMXCherokee37 min
Feb 21, 4:11 PM CSTSevere Thunderstorm WarningFFCDawson, Pickens34 min
Feb 21, 4:15 PM CSTSevere Thunderstorm WarningFFCChattooga30 min
Feb 21, 4:20 PM CSTSevere Thunderstorm WarningFFCBartow40 min
Feb 21, 4:26 PM CSTSevere Thunderstorm WarningHUNJackson, Madison34 min
Feb 21, 4:29 PM CSTSevere Thunderstorm WarningHUNColbert, Lauderdale, Lawrence31 min
Feb 21, 4:34 PM CSTSevere Thunderstorm WarningFFCFloyd41 min
Feb 21, 4:35 PM CSTFlash Flood WarningHUNColbert115 min
Feb 21, 4:36 PM CSTSevere Thunderstorm WarningGSPOconee39 min
Feb 21, 4:38 PM CSTSevere Thunderstorm WarningGSPStephens52 min
Feb 21, 4:40 PM CSTFlash Flood WarningHUNJackson3 hr
Feb 21, 4:42 PM CSTSevere Thunderstorm WarningFFCCherokee48 min
Feb 21, 5:00 PM CSTSevere Thunderstorm WarningHUNColbert, Franklin, Lawrence45 min
Feb 21, 5:02 PM CSTSevere Thunderstorm WarningHUNJackson43 min
Feb 21, 5:03 PM CSTSevere Thunderstorm WarningGSPAnderson57 min
Feb 21, 5:08 PM CSTSevere Thunderstorm WarningFFCForsyth, Fulton52 min
Feb 21, 5:10 PM CSTSevere Thunderstorm WarningHUNLimestone, Morgan20 min
Feb 21, 5:14 PM CSTSevere Thunderstorm WarningFFCBartow, Paulding46 min
Feb 21, 5:17 PM CSTSevere Thunderstorm WarningHUNDeKalb28 min
Feb 21, 5:28 PM CSTSevere Thunderstorm WarningFFCGwinnett, Hall32 min
Feb 21, 5:29 PM CSTSevere Thunderstorm WarningHUNLimestone, Madison, Morgan31 min
Feb 21, 5:30 PM CSTSevere Thunderstorm WarningFFCCobb30 min
Feb 21, 5:38 PM CSTFlash Flood WarningHUNLimestone3 hr
Feb 21, 5:42 PM CSTSevere Thunderstorm WarningFFCBarrow48 min
Feb 21, 5:45 PM CSTSevere Thunderstorm WarningHUNLawrence30 min
Feb 21, 5:46 PM CSTSevere Thunderstorm WarningHUNFranklin29 min
Feb 21, 5:48 PM CSTFlash Flood WarningHUNDeKalb3 hr
Feb 21, 5:53 PM CSTSevere Thunderstorm WarningFFCDeKalb, Gwinnett52 min
Feb 21, 5:59 PM CSTSevere Thunderstorm WarningHUNMarshall, Morgan46 min
Feb 21, 6:00 PM CSTFlash Flood WarningHUNMadison3 hr

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 12:00Z, 6.8 hours before the alert went out and 134 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-pSkew-T log-p diagram, Peachtre/Fal Fld, GA at 12:00Z on 2005-02-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 88 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 12:00Z on 2005-02-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 187 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
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
88 J/kg
Mixed-layer CIN
-50 J/kg
Mixed-layer LCL
553 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
187 m²/s²
0-3 km storm-relative helicity
177 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 21, 7:50 AM CSTMesoscale DiscussionSPCLauderdale55 min
Feb 21, 8:40 AM CSTSevere Thunderstorm WatchSPCColbert, Cullman, DeKalb, Fayette, Franklin, Jackson and 8 more5 hr
Feb 21, 10:52 AM CSTMesoscale DiscussionSPCBlount, Cherokee, DeKalb, Etowah, Marshall113 min
Feb 21, 12:17 PM CSTMesoscale DiscussionSPCBlount, Calhoun, Cherokee, Cleburne, Colbert, Cullman and 12 more118 min
Feb 21, 3:47 PM CSTMesoscale DiscussionSPCBlount, Calhoun, Cherokee, Cleburne, Cullman, DeKalb and 14 more118 min
Feb 21, 4:50 PM CSTMesoscale DiscussionSPCBarbour, Bullock, Butler, Coffee, Conecuh, Covington and 8 more55 min
Feb 21, 5:48 PM CSTMesoscale DiscussionSPCBlount, Calhoun, Cherokee, Clay, Cleburne, Cullman and 15 more27 min

Nearby

Severe Thunderstorm Watches in Georgia, 2005Severe Thunderstorm Watches in Alabama, 2005Severe Thunderstorm Watches in South Carolina, 2005Every 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.