Alert archive / Georgia / Severe Thunderstorm Watches in 2011

Severe Thunderstorm Watch 546

June 24, 20114 states

The Storm Prediction Center issued this severe thunderstorm watch at Jun 24, 2011, 1:49 PM CDT for 4 states. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued: Jun 24, 2011, 1:49 PM CDT (18:49 UTC)
Expired: Jun 24, 2011, 9:00 PM CDT
In force: 7 hr
Issued by: the Storm Prediction Center
Largest hail expected: 1.5 in
Strongest gust expected: 60 kt

All 126 counties

Bibb County, AL, Blount County, AL, Calhoun County, AL, Chambers County, AL, Cherokee County, AL, Chilton County, AL, Clay County, AL, Cleburne County, AL, Coosa County, AL, Cullman County, AL, DeKalb County, AL, Etowah County, AL, Fayette County, AL, Franklin County, AL, Greene County, AL, Hale County, AL, Jackson County, AL, Jefferson County, AL, Lamar County, AL, Lawrence County, AL, Limestone County, AL, Madison County, AL, Marion County, AL, Marshall County, AL, Morgan County, AL, Perry County, AL, Pickens County, AL, Randolph County, AL, Shelby County, AL, St. Clair County, AL, Sumter County, AL, Talladega County, AL, Tallapoosa County, AL, Tuscaloosa County, AL, Walker County, AL, Winston County, AL, 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, Jasper County, GA, Lamar County, GA, Lumpkin County, GA, Meriwether County, GA, Monroe 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, Upson County, GA, Walker County, GA, Walton County, GA, White County, GA, Whitfield County, GA, Wilkes County, GA, Attala County, MS, Bolivar County, MS, Calhoun County, MS, Carroll County, MS, Chickasaw County, MS, Choctaw County, MS, Clay County, MS, Grenada County, MS, Holmes County, MS, Itawamba County, MS, Kemper County, MS, Lafayette County, MS, Lauderdale County, MS, Leake County, MS, Lee County, MS, Leflore County, MS, Lowndes County, MS, Monroe County, MS, Montgomery County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Oktibbeha County, MS, Panola County, MS, Pontotoc County, MS, Quitman County, MS, Scott County, MS, Sunflower County, MS, Tallahatchie County, MS, Union County, MS, Webster County, MS, Winston County, MS, Yalobusha County, MS, Cherokee County, NC, Clay County, NC

The radar

The Columbus AFB radar (KGWX), 55 km from the middle of the area, began a volume at 18:50 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.

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes: 20%
One or more EF2 to EF5 tornadoes: 5%
Ten or more severe wind reports: 60%
One or more gusts of 65 knots or more: 30%
Ten or more severe hail reports: 30%
One or more hailstones of 2 inches or more: 20%
Six or more combined severe hail and wind reports: 80%

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Jun 24, 1:53 PM CDT	Severe Thunderstorm Warning	MEG	Panola, Quitman, Tallahatchie, Yalobusha	67 min
Jun 24, 1:59 PM CDT	Severe Thunderstorm Warning	MRX	Cherokee, Clay	61 min
Jun 24, 2:00 PM CDT	Severe Thunderstorm Warning	HUN	Lawrence, Limestone, Madison, Morgan	45 min
Jun 24, 2:03 PM CDT	Severe Thunderstorm Warning	MEG	Lee, Pontotoc, Prentiss, Union	57 min
Jun 24, 2:04 PM CDT	Severe Thunderstorm Warning	FFC	Hall, Lumpkin, White	41 min
Jun 24, 2:14 PM CDT	Severe Thunderstorm Warning	MEG	Calhoun, Lafayette, Panola, Pontotoc, Yalobusha	50 min
Jun 24, 2:15 PM CDT	Severe Thunderstorm Warning	HUN	Morgan	30 min
Jun 24, 2:17 PM CDT	Severe Thunderstorm Warning	MEG	Benton, Lafayette, Marshall, Tippah, Union	43 min
Jun 24, 2:27 PM CDT	Severe Thunderstorm Warning	FFC	Catoosa, Dade, Murray, Walker, Whitfield	48 min
Jun 24, 2:30 PM CDT	Severe Thunderstorm Warning	MEG	Coahoma, Quitman, Tallahatchie	60 min
Jun 24, 2:31 PM CDT	Severe Thunderstorm Warning	HUN	Cullman, Jackson, Madison, Marshall, Morgan	44 min
Jun 24, 2:31 PM CDT	Severe Thunderstorm Warning	FFC	Fannin, Gilmer	16 min
Jun 24, 2:38 PM CDT	Severe Thunderstorm Warning	MEG	Itawamba, Prentiss, Tishomingo	52 min
Jun 24, 2:41 PM CDT	Severe Thunderstorm Warning	MRX	Cherokee	64 min
Jun 24, 2:48 PM CDT	Severe Thunderstorm Warning	HUN	Franklin	27 min
Jun 24, 2:53 PM CDT	Severe Thunderstorm Warning	MEG	Calhoun, Chickasaw, Lee, Monroe, Pontotoc	52 min
Jun 24, 3:11 PM CDT	Tornado Warning	HUN	Jackson	18 min
Jun 24, 3:22 PM CDT	Severe Thunderstorm Warning	HUN	DeKalb, Jackson, Marshall	38 min
Jun 24, 3:23 PM CDT	Severe Thunderstorm Warning	JAN	Leflore, Sunflower	52 min
Jun 24, 3:24 PM CDT	Severe Thunderstorm Warning	JAN	Carroll, Grenada	66 min
Jun 24, 3:28 PM CDT	Severe Thunderstorm Warning	BMX	Cherokee	47 min
Jun 24, 3:30 PM CDT	Severe Thunderstorm Warning	BMX	Lamar, Marion	45 min
Jun 24, 3:31 PM CDT	Severe Thunderstorm Warning	MEG	Tallahatchie	44 min
Jun 24, 3:32 PM CDT	Severe Thunderstorm Warning	MEG	Chickasaw, Itawamba, Lee, Monroe	46 min
Jun 24, 3:38 PM CDT	Severe Thunderstorm Warning	FFC	Chattooga, Dade, Floyd, Walker	37 min
Jun 24, 3:46 PM CDT	Severe Thunderstorm Warning	HUN	Cullman, Morgan	29 min
Jun 24, 3:46 PM CDT	Flash Flood Warning	MEG	Chickasaw, Itawamba, Lee, Monroe	108 min
Jun 24, 3:59 PM CDT	Severe Thunderstorm Warning	JAN	Lowndes	46 min
Jun 24, 4:01 PM CDT	Severe Thunderstorm Warning	MEG	Monroe	29 min
Jun 24, 4:07 PM CDT	Severe Thunderstorm Warning	JAN	Carroll, Leflore	42 min
Jun 24, 4:08 PM CDT	Severe Thunderstorm Warning	FFC	Bartow, Floyd, Gordon	22 min
Jun 24, 4:11 PM CDT	Severe Thunderstorm Warning	BMX	Fayette, Lamar, Marion, Walker, Winston	49 min
Jun 24, 4:15 PM CDT	Severe Thunderstorm Warning	BMX	Cherokee	30 min
Jun 24, 4:22 PM CDT	Severe Thunderstorm Warning	JAN	Attala, Carroll, Choctaw, Montgomery, Oktibbeha, Winston	53 min
Jun 24, 4:24 PM CDT	Severe Thunderstorm Warning	HUN	Cullman	36 min
Jun 24, 4:25 PM CDT	Severe Thunderstorm Warning	FFC	Bartow, Cherokee, Floyd, Gordon, Pickens	50 min
Jun 24, 4:33 PM CDT	Severe Thunderstorm Warning	HUN	Marshall	27 min
Jun 24, 4:38 PM CDT	Severe Thunderstorm Warning	BMX	Blount, Etowah, St. Clair	67 min
Jun 24, 4:51 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson, St. Clair, Shelby, Talladega	39 min
Jun 24, 5:03 PM CDT	Severe Thunderstorm Warning	JAN	Attala, Leake, Neshoba, Noxubee, Winston	57 min
Jun 24, 5:05 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Tuscaloosa	40 min
Jun 24, 5:23 PM CDT	Severe Thunderstorm Warning	BMX	Blount, Jefferson, St. Clair	21 min
Jun 24, 5:26 PM CDT	Severe Thunderstorm Warning	BMX	St. Clair, Talladega	49 min
Jun 24, 5:28 PM CDT	Severe Thunderstorm Warning	FFC	Coweta, Fulton	47 min
Jun 24, 5:31 PM CDT	Severe Thunderstorm Warning	BMX	Shelby, Talladega	44 min
Jun 24, 5:46 PM CDT	Severe Thunderstorm Warning	JAN	Leake, Madison	43 min
Jun 24, 5:50 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Chilton, Perry	40 min
Jun 24, 6:01 PM CDT	Severe Thunderstorm Warning	FFC	Carroll, Haralson	16 min
Jun 24, 6:04 PM CDT	Severe Thunderstorm Warning	JAN	Kemper, Lauderdale, Newton, Scott	50 min
Jun 24, 6:25 PM CDT	Severe Thunderstorm Warning	BMX	Cleburne, Randolph	35 min
Jun 24, 6:33 PM CDT	Severe Thunderstorm Warning	FFC	Carroll, Haralson, Heard	27 min
Jun 24, 6:35 PM CDT	Severe Thunderstorm Warning	BMX	Autauga, Chilton, Coosa	40 min
Jun 24, 6:36 PM CDT	Severe Thunderstorm Warning	BMX	Sumter	39 min
Jun 24, 6:54 PM CDT	Severe Thunderstorm Warning	FFC	Carroll, Coweta, Douglas, Fulton, Heard	51 min
Jun 24, 7:11 PM CDT	Severe Thunderstorm Warning	BMX	Marengo, Sumter	34 min
Jun 24, 7:15 PM CDT	Severe Thunderstorm Warning	FFC	Coweta, Fayette, Meriwether	28 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

Birmingham, AL (KBMX), launched 12:00Z, 6.8 hours before the alert went out and 133 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: 1692 J/kg
Mixed-layer CIN: -82 J/kg
Mixed-layer LCL: 755 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 44 m²/s²
0-3 km storm-relative helicity: 44 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.

Issued	Product	Office	Counties	Lasted
Jun 24, 12:58 PM CDT	Mesoscale Discussion	SPC	Blount, Calhoun, Cherokee, Colbert, Cullman, DeKalb and 18 more	2 hr
Jun 24, 3:42 PM CDT	Mesoscale Discussion	SPC	Bibb, Blount, Calhoun, Cherokee, Chilton, Clay and 29 more	93 min
Jun 24, 5:20 PM CDT	Mesoscale Discussion	SPC	Autauga, Barbour, Bibb, Bullock, Butler, Chambers and 22 more	85 min
Jun 24, 12:05 PM CDT	Mesoscale Discussion	SPC	Rabun	2 hr
Jun 24, 1:25 PM CDT	Severe Thunderstorm Watch	SPC	Bertie, Camden, Chowan, Currituck, Gates, Hertford and 2 more	4 hr
Jun 24, 3:13 PM CDT	Mesoscale Discussion	SPC	Beaufort, Bertie, Camden, Chowan, Currituck, Edgecombe and 13 more	92 min

Nearby

Severe Thunderstorm Watches in Georgia, 2011 Severe Thunderstorm Watches in Alabama, 2011 Severe Thunderstorm Watches in Mississippi, 2011 Every severe thunderstorm watch in 2011

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.