Alert archive / Tennessee / Tornado Watches in 2009

Tornado Watch 132

April 10, 200931 counties in Alabama; 5 counties in Georgia; 49 counties in Tennessee

The Storm Prediction Center issued this tornado watch at Apr 10, 2009, 11:23 AM CDT for 31 counties in Alabama; 5 counties in Georgia; 49 counties in Tennessee. It was in force for 8 hr.

The area

The outline as issued.

The facts

Issued: Apr 10, 2009, 11:23 AM CDT (16:23 UTC)
Expired: Apr 10, 2009, 7:00 PM CDT
In force: 8 hr
Issued by: the Storm Prediction Center
Particularly dangerous situation: Yes
Largest hail expected: 3 in
Strongest gust expected: 70 kt

All 85 counties

Bibb County, AL, 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, Greene County, AL, Hale 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, Pickens County, AL, Shelby County, AL, St. Clair County, AL, Sumter County, AL, Talladega County, AL, Tuscaloosa County, AL, Walker County, AL, Winston County, AL, Catoosa County, GA, Chattooga County, GA, Dade County, GA, Walker County, GA, Whitfield County, GA, Anderson County, TN, Bedford County, TN, Bledsoe County, TN, Blount County, TN, Bradley County, TN, Campbell County, TN, Cannon County, TN, Clay County, TN, Coffee County, TN, Cumberland County, TN, Davidson County, TN, DeKalb County, TN, Fentress County, TN, Franklin County, TN, Giles County, TN, Grundy County, TN, Hamilton County, TN, Jackson County, TN, Knox County, TN, Lawrence County, TN, Lincoln County, TN, Loudon County, TN, Macon County, TN, Marion County, TN, Marshall County, TN, Maury County, TN, McMinn County, TN, Meigs County, TN, Monroe County, TN, Moore County, TN, Morgan County, TN, Overton County, TN, Pickett County, TN, Polk County, TN, Putnam County, TN, Rhea County, TN, Roane County, TN, Rutherford County, TN, Scott County, TN, Sequatchie County, TN, Sevier County, TN, Smith County, TN, Sumner County, TN, Trousdale County, TN, Van Buren County, TN, Warren County, TN, White County, TN, Williamson County, TN, Wilson County, TN

The radar

The Northeast Alabama radar (KHTX), 53 km from the middle of the area, began a volume at 16:26 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: 70%
One or more EF2 to EF5 tornadoes: 50%
Ten or more severe wind reports: 70%
One or more gusts of 65 knots or more: 60%
Ten or more severe hail reports: 60%
One or more hailstones of 2 inches or more: 60%
Six or more combined severe hail and wind reports: 90%

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Apr 10, 11:37 AM CDT	Severe Thunderstorm Warning	OHX	Maury, Williamson	38 min
Apr 10, 11:55 AM CDT	Tornado Warning	HUN	Lauderdale	35 min
Apr 10, 11:57 AM CDT	Tornado Warning	OHX	Cheatham, Davidson, Montgomery, Robertson	33 min
Apr 10, 12:00 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Dickson, Hickman, Williamson	45 min
Apr 10, 12:07 PM CDT	Tornado Warning	OHX	Davidson, Rutherford, Williamson	38 min
Apr 10, 12:14 PM CDT	Tornado Warning	OHX	Bedford, Marshall, Maury, Rutherford, Williamson	31 min
Apr 10, 12:18 PM CDT	Severe Thunderstorm Warning	OHX	Hickman, Lewis, Maury, Williamson	42 min
Apr 10, 12:19 PM CDT	Tornado Warning	OHX	Lawrence, Wayne	26 min
Apr 10, 12:23 PM CDT	Severe Thunderstorm Warning	OHX	Giles, Marshall, Maury	37 min
Apr 10, 12:23 PM CDT	Severe Thunderstorm Warning	OHX	Cheatham, Davidson, Dickson, Williamson	52 min
Apr 10, 12:25 PM CDT	Tornado Warning	OHX	Lawrence, Wayne	50 min
Apr 10, 12:28 PM CDT	Severe Thunderstorm Warning	HUN	Lauderdale	32 min
Apr 10, 12:29 PM CDT	Tornado Warning	OHX	Robertson, Sumner	46 min
Apr 10, 12:31 PM CDT	Severe Thunderstorm Warning	HUN	Colbert, Lauderdale	29 min
Apr 10, 12:31 PM CDT	Tornado Warning	OHX	Giles, Marshall, Maury	29 min
Apr 10, 12:33 PM CDT	Tornado Warning	HUN	Lauderdale	27 min
Apr 10, 12:33 PM CDT	Tornado Warning Emergency	OHX	Cannon, Rutherford, Wilson	42 min
Apr 10, 12:37 PM CDT	Severe Thunderstorm Warning	OHX	Maury	23 min
Apr 10, 12:43 PM CDT	Tornado Warning	OHX	Maury, Williamson	32 min
Apr 10, 12:44 PM CDT	Tornado Warning	HUN	Colbert, Lauderdale	46 min
Apr 10, 12:46 PM CDT	Tornado Warning	OHX	Giles, Marshall	29 min
Apr 10, 12:47 PM CDT	Tornado Warning	HUN	Lauderdale	43 min
Apr 10, 12:49 PM CDT	Tornado Warning	OHX	Giles, Lawrence, Maury	26 min
Apr 10, 12:50 PM CDT	Tornado Warning	OHX	Davidson, Williamson, Wilson	25 min
Apr 10, 12:52 PM CDT	Tornado Warning	OHX	Macon, Sumner	23 min
Apr 10, 12:53 PM CDT	Tornado Warning	HUN	Colbert, Franklin	37 min
Apr 10, 12:56 PM CDT	Tornado Warning	OHX	Marshall, Maury	34 min
Apr 10, 12:57 PM CDT	Tornado Warning	OHX	Cannon, DeKalb, Rutherford, Smith, Trousdale, Wilson	48 min
Apr 10, 12:58 PM CDT	Tornado Warning	OHX	Giles, Lawrence	32 min
Apr 10, 1:00 PM CDT	Tornado Warning	OHX	Bedford, Marshall	30 min
Apr 10, 1:11 PM CDT	Severe Thunderstorm Warning	HUN	Lincoln	19 min
Apr 10, 1:12 PM CDT	Tornado Warning	OHX	Bedford, Giles, Marshall	33 min
Apr 10, 1:22 PM CDT	Tornado Warning	OHX	Clay, Macon	23 min
Apr 10, 1:22 PM CDT	Tornado Warning	OHX	Bedford, Coffee, Rutherford	38 min
Apr 10, 1:29 PM CDT	Severe Thunderstorm Warning	HUN	Limestone, Madison	46 min
Apr 10, 1:30 PM CDT	Severe Thunderstorm Warning	HUN	Lawrence, Morgan	15 min
Apr 10, 1:32 PM CDT	Tornado Warning	HUN	Lauderdale, Limestone	28 min
Apr 10, 1:32 PM CDT	Tornado Warning	OHX	Giles	43 min
Apr 10, 1:33 PM CDT	Severe Thunderstorm Warning	HUN	Franklin	42 min
Apr 10, 1:33 PM CDT	Tornado Warning	HUN	Limestone	27 min
Apr 10, 1:36 PM CDT	Tornado Warning	OHX	DeKalb, Putnam, Smith, White	39 min
Apr 10, 1:42 PM CDT	Tornado Warning	OHX	Bedford, Cannon, Coffee, Warren	48 min
Apr 10, 1:44 PM CDT	Tornado Warning	HUN	Lincoln, Moore	46 min
Apr 10, 1:45 PM CDT	Severe Thunderstorm Warning	BMX	Marion	45 min
Apr 10, 1:45 PM CDT	Severe Thunderstorm Warning	HUN	Lawrence, Morgan	45 min
Apr 10, 1:48 PM CDT	Severe Thunderstorm Warning	HUN	Limestone	27 min
Apr 10, 1:48 PM CDT	Severe Thunderstorm Warning	OHX	Clay, Overton, Pickett	27 min
Apr 10, 1:51 PM CDT	Tornado Warning	OHX	DeKalb, Jackson, Overton, Putnam	39 min
Apr 10, 1:54 PM CDT	Tornado Warning	HUN	Lawrence, Morgan	36 min
Apr 10, 1:57 PM CDT	Tornado Warning	OHX	Bedford, Coffee, Grundy	48 min
Apr 10, 2:00 PM CDT	Tornado Warning	HUN	Limestone, Madison	15 min
Apr 10, 2:01 PM CDT	Severe Thunderstorm Warning	HUN	Madison	44 min
Apr 10, 2:06 PM CDT	Tornado Warning	HUN	Franklin	24 min
Apr 10, 2:09 PM CDT	Severe Thunderstorm Warning	BMX	Marion, Winston	51 min
Apr 10, 2:09 PM CDT	Tornado Warning	OHX	Fentress, Overton, Putnam, White	51 min
Apr 10, 2:15 PM CDT	Tornado Warning	OHX	Cumberland, DeKalb, Putnam, Van Buren, Warren, White	30 min
Apr 10, 2:16 PM CDT	Severe Thunderstorm Warning	HUN	Madison, Marshall, Morgan	29 min
Apr 10, 2:20 PM CDT	Tornado Warning	HUN	Limestone, Madison, Morgan	25 min
Apr 10, 2:25 PM CDT	Tornado Warning	OHX	Coffee, Grundy	35 min
Apr 10, 2:27 PM CDT	Flash Flood Warning	HUN	Limestone, Madison, Morgan	80 min
Apr 10, 2:27 PM CDT	Severe Thunderstorm Warning	HUN	Jackson, Madison	24 min
Apr 10, 2:28 PM CDT	Tornado Warning	MRX	Marion	47 min
Apr 10, 2:31 PM CDT	Severe Thunderstorm Warning	HUN	Lawrence, Morgan	29 min
Apr 10, 2:31 PM CDT	Severe Thunderstorm Warning	HUN	Franklin, Moore	29 min
Apr 10, 2:32 PM CDT	Tornado Warning	OHX	Cumberland, Fentress, Overton, Putnam	43 min
Apr 10, 2:43 PM CDT	Tornado Warning	HUN	Madison	32 min
Apr 10, 2:43 PM CDT	Tornado Warning	MRX	Bledsoe, Sequatchie	47 min
Apr 10, 2:43 PM CDT	Tornado Warning	OHX	Cumberland, Van Buren, Warren, White	47 min
Apr 10, 2:44 PM CDT	Severe Thunderstorm Warning	BMX	Winston	16 min
Apr 10, 2:48 PM CDT	Severe Thunderstorm Warning	HUN	Jackson	27 min
Apr 10, 2:50 PM CDT	Severe Thunderstorm Warning	HUN	Cullman, Lawrence, Morgan	40 min
Apr 10, 2:54 PM CDT	Severe Thunderstorm Warning	HUN	Jackson, Marshall	51 min
Apr 10, 2:54 PM CDT	Severe Thunderstorm Warning	MRX	Marion	51 min
Apr 10, 3:03 PM CDT	Severe Thunderstorm Warning	MRX	Hamilton	42 min
Apr 10, 3:05 PM CDT	Tornado Warning	HUN	Jackson, Marshall	25 min
Apr 10, 3:06 PM CDT	Severe Thunderstorm Warning	BMX	Winston	34 min
Apr 10, 3:12 PM CDT	Tornado Warning	HUN	DeKalb, Jackson	33 min
Apr 10, 3:12 PM CDT	Tornado Warning	MRX	Bledsoe, Bradley, Hamilton, McMinn, Marion, Meigs and 2 more	48 min
Apr 10, 3:14 PM CDT	Severe Thunderstorm Warning	HUN	Jackson	31 min
Apr 10, 3:18 PM CDT	Severe Thunderstorm Warning	BMX	St. Clair, Shelby, Talladega	24 min
Apr 10, 3:19 PM CDT	Severe Thunderstorm Warning	FFC	Dade, Walker	41 min
Apr 10, 3:21 PM CDT	Severe Thunderstorm Warning	HUN	Cullman, Marshall, Morgan	39 min
Apr 10, 3:24 PM CDT	Severe Thunderstorm Warning	MRX	Campbell, Claiborne, Union	36 min
Apr 10, 3:27 PM CDT	Flash Flood Warning	HUN	DeKalb, Jackson, Marshall	2 hr
Apr 10, 3:30 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson, St. Clair, Shelby	30 min
Apr 10, 3:30 PM CDT	Severe Thunderstorm Warning	HUN	DeKalb, Jackson	45 min
Apr 10, 3:30 PM CDT	Severe Thunderstorm Warning	FFC	Chattooga, Dade, Walker	45 min
Apr 10, 3:32 PM CDT	Severe Thunderstorm Warning	HUN	DeKalb	43 min
Apr 10, 3:33 PM CDT	Severe Thunderstorm Warning	HUN	DeKalb, Marshall	27 min
Apr 10, 3:33 PM CDT	Tornado Warning	HUN	DeKalb	27 min
Apr 10, 3:36 PM CDT	Tornado Warning	FFC	Dade, Walker	27 min
Apr 10, 3:37 PM CDT	Severe Thunderstorm Warning	HUN	Cullman	23 min
Apr 10, 3:37 PM CDT	Severe Thunderstorm Warning	MRX	Anderson, Blount, Knox, Loudon, McMinn, Meigs and 3 more	53 min
Apr 10, 3:43 PM CDT	Severe Thunderstorm Warning	FFC	Catoosa, Whitfield	47 min
Apr 10, 3:43 PM CDT	Tornado Warning	MRX	Bradley, Hamilton, McMinn, Monroe, Polk	62 min
Apr 10, 3:45 PM CDT	Tornado Warning	MRX	Anderson, Knox, Loudon, Roane	60 min
Apr 10, 3:48 PM CDT	Severe Thunderstorm Warning	BMX	Cherokee	42 min
Apr 10, 3:49 PM CDT	Severe Thunderstorm Warning	BMX	St. Clair, Shelby, Talladega	41 min
Apr 10, 3:53 PM CDT	Tornado Warning	FFC	Chattooga, Floyd, Walker	37 min
Apr 10, 3:56 PM CDT	Severe Thunderstorm Warning	MRX	Bradley, Hamilton	34 min
Apr 10, 3:58 PM CDT	Severe Thunderstorm Warning	HUN	DeKalb, Marshall	47 min
Apr 10, 3:59 PM CDT	Tornado Warning	FFC	Catoosa, Walker	22 min
Apr 10, 4:01 PM CDT	Severe Thunderstorm Warning	FFC	Chattooga, Floyd	44 min
Apr 10, 4:02 PM CDT	Severe Thunderstorm Warning	HUN	Cullman	13 min
Apr 10, 4:04 PM CDT	Tornado Warning	HUN	DeKalb	26 min
Apr 10, 4:06 PM CDT	Tornado Warning	HUN	Marshall	13 min
Apr 10, 4:08 PM CDT	Severe Thunderstorm Warning	BMX	Blount, Etowah	52 min
Apr 10, 4:11 PM CDT	Severe Thunderstorm Warning	BMX	Blount, Calhoun, Cherokee, Etowah, St. Clair	34 min
Apr 10, 4:11 PM CDT	Tornado Warning	BMX	Blount, Etowah	34 min
Apr 10, 4:11 PM CDT	Severe Thunderstorm Warning	FFC	Gordon, Murray, Whitfield	49 min
Apr 10, 4:13 PM CDT	Tornado Warning	FFC	Chattooga, Floyd	62 min
Apr 10, 4:15 PM CDT	Tornado Warning	BMX	Cherokee	45 min
Apr 10, 4:15 PM CDT	Tornado Warning	HUN	Marshall	30 min
Apr 10, 4:19 PM CDT	Tornado Warning	FFC	Gordon, Murray, Whitfield	41 min
Apr 10, 4:26 PM CDT	Severe Thunderstorm Warning	MRX	Blount, Sevier	64 min
Apr 10, 4:28 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Clay, Cleburne, Randolph, St. Clair, Talladega	47 min
Apr 10, 4:28 PM CDT	Severe Thunderstorm Warning	HUN	DeKalb	32 min
Apr 10, 4:29 PM CDT	Severe Thunderstorm Warning	BMX	Walker, Winston	20 min
Apr 10, 4:31 PM CDT	Severe Thunderstorm Warning	BMX	Blount, Jefferson	44 min
Apr 10, 4:32 PM CDT	Severe Thunderstorm Warning	MRX	Grainger, Hamblen, Jefferson, Knox, Union	28 min
Apr 10, 4:35 PM CDT	Tornado Warning	BMX	Calhoun, Clay, Cleburne, Randolph, Talladega	40 min
Apr 10, 4:40 PM CDT	Tornado Warning	HUN	DeKalb	16 min
Apr 10, 4:42 PM CDT	Tornado Warning	BMX	Cherokee, Etowah	48 min
Apr 10, 4:43 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Jefferson, Shelby, Talladega	47 min
Apr 10, 4:57 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Chilton, Jefferson, Shelby, Tuscaloosa	48 min
Apr 10, 5:01 PM CDT	Severe Thunderstorm Warning	BMX	Clay, St. Clair, Shelby, Talladega	44 min
Apr 10, 5:04 PM CDT	Severe Thunderstorm Warning	BMX	Clay, Cleburne, Randolph	41 min
Apr 10, 5:09 PM CDT	Tornado Warning	BMX	Clay, Cleburne, Randolph	29 min
Apr 10, 5:12 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Cherokee, Cleburne, Etowah	48 min
Apr 10, 5:29 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Cherokee, Cleburne, Etowah, St. Clair	61 min
Apr 10, 5:34 PM CDT	Severe Thunderstorm Warning	BMX	Shelby, Talladega	41 min
Apr 10, 5:34 PM CDT	Severe Thunderstorm Warning	FFC	Chattooga, Floyd	41 min
Apr 10, 5:37 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Cherokee, Cleburne, Etowah, St. Clair	23 min
Apr 10, 5:38 PM CDT	Tornado Warning	BMX	Calhoun, Cherokee, Cleburne, Etowah	52 min
Apr 10, 5:44 PM CDT	Severe Thunderstorm Warning	BMX	Chilton, Clay, Coosa, Shelby, Talladega, Tallapoosa	46 min
Apr 10, 5:45 PM CDT	Tornado Warning	BMX	Calhoun, Cleburne, Etowah, St. Clair	60 min
Apr 10, 5:50 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Chilton, Shelby	21 min
Apr 10, 6:00 PM CDT	Severe Thunderstorm Warning	BMX	Clay, Cleburne, Randolph, Shelby, Talladega	60 min
Apr 10, 6:15 PM CDT	Severe Thunderstorm Warning	BMX	Chambers, Clay, Coosa, Randolph, Talladega, Tallapoosa	60 min
Apr 10, 6:24 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Chilton, Coosa, Perry	51 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

Nashville Metro, TN (KBNA), launched 12:00Z, 4.4 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1414 m above ground
0-6 km bulk shear: 71 kt
0-1 km storm-relative helicity: -50 m²/s²
0-3 km storm-relative helicity: -4 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
Apr 10, 1:24 AM CDT	Mesoscale Discussion	SPC	Colbert, Fayette, Franklin, Lamar, Lauderdale, Marion and 1 more	96 min
Apr 10, 1:43 AM CDT	Tornado Watch	SPC	Blount, Colbert, Cullman, Fayette, Franklin, Greene and 12 more	5 hr
Apr 10, 4:25 AM CDT	Mesoscale Discussion	SPC	Blount, Calhoun, Cherokee, Cleburne, Cullman, DeKalb and 13 more	95 min
Apr 10, 8:22 AM CDT	Mesoscale Discussion	SPC	Lauderdale	83 min
Apr 10, 11:14 AM CDT	Mesoscale Discussion	SPC	Colbert, Franklin, Jackson, Lauderdale, Lawrence, Limestone and 4 more	76 min
Apr 10, 12:58 PM CDT	Mesoscale Discussion	SPC	Colbert, Cullman, Fayette, Franklin, Jackson, Lamar and 8 more	92 min
Apr 10, 2:29 PM CDT	Mesoscale Discussion	SPC	Cleburne	91 min
Apr 10, 2:39 PM CDT	Tornado Watch PDS	SPC	Autauga, Barbour, Bullock, Calhoun, Chambers, Cherokee and 19 more	8 hr
Apr 10, 3:43 PM CDT	Mesoscale Discussion	SPC	Blount, Calhoun, Cherokee, Cleburne, DeKalb, Etowah and 4 more	92 min
Apr 10, 6:34 PM CDT	Mesoscale Discussion	SPC	Autauga, Calhoun, Chambers, Chilton, Clay, Cleburne and 9 more	56 min
Apr 10, 7:04 AM CDT	Mesoscale Discussion	SPC	Banks, Bartow, Chattooga, Cherokee, Cobb, Dawson and 23 more	86 min
Apr 10, 5:11 PM CDT	Mesoscale Discussion	SPC	Baldwin, Bibb, Butts, Clarke, Columbia, Crawford and 32 more	64 min
Apr 10, 5:31 PM CDT	Tornado Watch	SPC	Baldwin, Bibb, Bleckley, Butts, Chattahoochee, Columbia and 53 more	7 hr
Apr 9, 10:48 PM CDT	Tornado Watch	SPC	Bolivar, Carroll, Coahoma, DeSoto, Grenada, Holmes and 17 more	4 hr
Apr 10, 8:53 AM CDT	Tornado Watch	SPC	Alcorn, Benton, Calhoun, Chickasaw, DeSoto, Itawamba and 11 more	7 hr
Apr 10, 12:50 AM CDT	Mesoscale Discussion	SPC	Benton, Carroll, Cheatham, Chester, Davidson, Decatur and 16 more	85 min
Apr 10, 1:22 AM CDT	Severe Thunderstorm Watch	SPC	Bedford, Benton, Carroll, Cheatham, Chester, Davidson and 28 more	4 hr
Apr 10, 3:33 AM CDT	Mesoscale Discussion	SPC	Bedford, Cannon, Cheatham, Clay, Coffee, Davidson and 24 more	57 min
Apr 10, 1:51 PM CDT	Tornado Watch	SPC	Carter, Claiborne, Cocke, Grainger, Greene, Hamblen and 8 more	6 hr
Apr 10, 3:42 PM CDT	Mesoscale Discussion	SPC	Carter, Hancock, Hawkins, Johnson, Sullivan, Unicoi and 1 more	63 min
Apr 10, 6:53 PM CDT	Mesoscale Discussion	SPC	Carter, Claiborne, Grainger, Greene, Hamblen, Hancock and 7 more	67 min

Nearby

Tornado Watches in Tennessee, 2009 Tornado Watches in Alabama, 2009 Tornado Watches in Georgia, 2009 Every tornado 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.