Alert archive / Tennessee / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 738

July 13, 20034 states

The Storm Prediction Center issued this severe thunderstorm watch at Jul 13, 2003, 3:05 PM CDT for 4 states. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Jul 13, 2003, 3:05 PM CDT (20:05 UTC)
Expired: Jul 13, 2003, 8:00 PM CDT
In force: 5 hr
Issued by: the Storm Prediction Center

All 63 counties

Blount County, AL, Calhoun County, AL, Cherokee County, AL, Cullman County, AL, DeKalb County, AL, Etowah County, AL, Fayette County, AL, Jackson County, AL, Jefferson County, AL, Lamar County, AL, Lawrence County, AL, Limestone County, AL, Madison County, AL, Marshall County, AL, Morgan County, AL, St. Clair County, AL, Walker County, AL, Winston County, AL, Catoosa County, GA, Chattooga County, GA, Dade County, GA, Murray County, GA, Walker County, GA, Whitfield County, GA, Lowndes County, MS, Anderson County, TN, Bledsoe County, TN, Blount County, TN, Bradley County, TN, Campbell County, TN, Claiborne County, TN, Coffee County, TN, Cumberland County, TN, DeKalb County, TN, Fentress County, TN, Franklin County, TN, Grainger County, TN, Grundy County, TN, Hamblen County, TN, Hamilton County, TN, Hancock County, TN, Hawkins County, TN, Jefferson County, TN, Knox County, TN, Lincoln County, TN, Loudon County, TN, Marion County, TN, McMinn County, TN, Meigs County, TN, Monroe County, TN, Moore County, TN, Morgan County, TN, Overton County, TN, Polk County, TN, Putnam County, TN, Rhea County, TN, Roane County, TN, Scott County, TN, Sequatchie County, TN, Union County, TN, Van Buren County, TN, Warren County, TN, White County, TN

The radar

The Northeast Alabama radar (KHTX), 41 km from the middle of the area, began a volume at 20:04 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

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

Issued	Product	Office	Counties	Lasted
Jul 13, 3:09 PM CDT	Severe Thunderstorm Warning	OHX	Fentress	51 min
Jul 13, 3:11 PM CDT	Severe Thunderstorm Warning	MRX	Morgan	49 min
Jul 13, 3:30 PM CDT	Severe Thunderstorm Warning	OHX	Cannon, Coffee, Rutherford	45 min
Jul 13, 3:43 PM CDT	Severe Thunderstorm Warning	MRX	Hamilton	32 min
Jul 13, 3:44 PM CDT	Severe Thunderstorm Warning	OHX	Warren	46 min
Jul 13, 3:58 PM CDT	Severe Thunderstorm Warning	MRX	Morgan	47 min
Jul 13, 4:00 PM CDT	Severe Thunderstorm Warning	MRX	Bledsoe	45 min
Jul 13, 4:14 PM CDT	Tornado Warning	OHX	Grundy, Warren	31 min
Jul 13, 4:16 PM CDT	Tornado Warning	MRX	Morgan	29 min
Jul 13, 4:20 PM CDT	Tornado Warning	OHX	Coffee, Grundy, Warren	25 min
Jul 13, 4:30 PM CDT	Severe Thunderstorm Warning	MRX	Hamilton, Sequatchie	60 min
Jul 13, 4:36 PM CDT	Severe Thunderstorm Warning	MRX	Anderson, Roane	39 min
Jul 13, 4:40 PM CDT	Severe Thunderstorm Warning	MRX	Marion	65 min
Jul 13, 4:59 PM CDT	Severe Thunderstorm Warning	MRX	Bradley	61 min
Jul 13, 5:00 PM CDT	Severe Thunderstorm Warning	OHX	Franklin, Grundy	15 min
Jul 13, 5:07 PM CDT	Severe Thunderstorm Warning	FFC	Murray, Whitfield	23 min
Jul 13, 5:16 PM CDT	Severe Thunderstorm Warning	MRX	Loudon, Roane	44 min
Jul 13, 5:22 PM CDT	Severe Thunderstorm Warning	FFC	Catoosa	23 min
Jul 13, 5:30 PM CDT	Severe Thunderstorm Warning	MRX	Hamilton	60 min
Jul 13, 5:39 PM CDT	Severe Thunderstorm Warning	FFC	Murray, Whitfield	36 min
Jul 13, 5:47 PM CDT	Severe Thunderstorm Warning	MRX	McMinn, Meigs, Monroe	58 min
Jul 13, 5:54 PM CDT	Severe Thunderstorm Warning	FFC	Catoosa	36 min
Jul 13, 5:58 PM CDT	Severe Thunderstorm Warning	MRX	Bradley, Loudon	47 min
Jul 13, 6:07 PM CDT	Flash Flood Warning	FFC	Catoosa, Whitfield	113 min
Jul 13, 6:16 PM CDT	Flash Flood Warning	FFC	Murray	119 min
Jul 13, 6:44 PM CDT	Severe Thunderstorm Warning	MRX	Monroe	46 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, 8.1 hours before the alert went out and 165 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: 2374 J/kg
Mixed-layer CIN: -22 J/kg
Mixed-layer LCL: 742 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 51 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
Jul 13, 11:02 AM CDT	Mesoscale Discussion	SPC	Bibb, Choctaw, Clarke, Dallas, Fayette, Greene and 12 more	118 min
Jul 13, 11:55 AM CDT	Severe Thunderstorm Watch	SPC	Colbert, Lauderdale	6 hr
Jul 13, 3:53 PM CDT	Mesoscale Discussion	SPC	Colbert, Lauderdale	67 min
Jul 13, 5:26 PM CDT	Mesoscale Discussion	SPC	Jackson	94 min
Jul 13, 5:55 PM CDT	Severe Thunderstorm Watch	SPC	Colbert, Franklin, Lamar, Lauderdale, Lawrence, Limestone and 1 more	4 hr
Jul 13, 11:50 AM CDT	Mesoscale Discussion	SPC	Baldwin, Bibb, Burke, Columbia, Crawford, Glascock and 16 more	115 min
Jul 13, 11:30 AM CDT	Mesoscale Discussion	SPC	Alcorn, Benton, Bolivar, Coahoma, DeSoto, Lafayette and 12 more	2 hr
Jul 13, 1:55 PM CDT	Severe Thunderstorm Watch	SPC	Adams	5 hr
Jul 13, 4:33 PM CDT	Mesoscale Discussion	SPC	Adams	87 min
Jul 13, 12:16 PM CDT	Mesoscale Discussion	SPC	Anderson, Bledsoe, Blount, Bradley, Campbell, Carter and 39 more	119 min

Nearby

Severe Thunderstorm Watches in Tennessee, 2003 Severe Thunderstorm Watches in Alabama, 2003 Severe Thunderstorm Watches in Georgia, 2003 Every severe thunderstorm watch in 2003

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.