Alert archive / Tennessee / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 714

July 10, 200328 counties in Alabama; 10 counties in Georgia; 43 counties in Tennessee

The Storm Prediction Center issued this severe thunderstorm watch at Jul 10, 2003, 11:55 AM CDT for 28 counties in Alabama; 10 counties in Georgia; 43 counties in Tennessee. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Jul 10, 2003, 11:55 AM CDT (16:55 UTC)
Expired: Jul 10, 2003, 5:00 PM CDT
In force: 5 hr
Issued by: the Storm Prediction Center

All 81 counties

Bibb County, AL, Blount County, AL, Calhoun County, AL, Chambers County, AL, Cherokee County, AL, Clay County, AL, Cleburne County, AL, Colbert County, AL, Coosa County, AL, Cullman County, AL, DeKalb County, AL, Etowah County, AL, Fayette County, AL, Jackson County, AL, Jefferson County, AL, Lauderdale County, AL, Lawrence County, AL, Limestone County, AL, Madison County, AL, Marshall County, AL, Morgan County, AL, Randolph County, AL, Shelby County, AL, St. Clair County, AL, Talladega County, AL, Tuscaloosa County, AL, Walker County, AL, Winston County, AL, Carroll County, GA, Catoosa County, GA, Chattooga County, GA, Dade County, GA, Floyd County, GA, Haralson County, GA, Heard County, GA, Polk County, GA, Troup County, GA, Walker County, GA, Bedford County, TN, Bledsoe County, TN, Cannon County, TN, Cheatham County, TN, Clay County, TN, Coffee County, TN, Cumberland County, TN, Davidson County, TN, DeKalb County, TN, Dickson County, TN, Franklin County, TN, Giles County, TN, Grundy County, TN, Hamilton County, TN, Hickman County, TN, Houston County, TN, Humphreys County, TN, Jackson County, TN, Lawrence County, TN, Lewis County, TN, Lincoln County, TN, Macon County, TN, Marion County, TN, Marshall County, TN, Maury County, TN, Montgomery County, TN, Moore County, TN, Overton County, TN, Pickett County, TN, Putnam County, TN, Robertson County, TN, Rutherford County, TN, Sequatchie County, TN, Smith County, TN, Stewart County, TN, Sumner County, TN, Trousdale County, TN, Van Buren County, TN, Warren County, TN, Wayne County, TN, White County, TN, Williamson County, TN, Wilson County, TN

The radar

The Northeast Alabama radar (KHTX), 21 km from the middle of the area, began a volume at 16:57 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

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

Issued	Product	Office	Counties	Lasted
Jul 10, 1:01 PM CDT	Severe Thunderstorm Warning	OHX	Sumner, Wilson	44 min
Jul 10, 1:24 PM CDT	Severe Thunderstorm Warning	OHX	Trousdale	36 min
Jul 10, 1:49 PM CDT	Severe Thunderstorm Warning	OHX	Macon	26 min
Jul 10, 2:20 PM CDT	Severe Thunderstorm Warning	OHX	Davidson	45 min
Jul 10, 2:34 PM CDT	Severe Thunderstorm Warning	OHX	Clay	36 min
Jul 10, 3:59 PM CDT	Severe Thunderstorm Warning	HUN	Limestone	31 min
Jul 10, 4:15 PM CDT	Severe Thunderstorm Warning	MRX	Bledsoe	45 min
Jul 10, 4:24 PM CDT	Severe Thunderstorm Warning	HUN	Madison	36 min
Jul 10, 4:44 PM CDT	Severe Thunderstorm Warning	MRX	Sequatchie	31 min
Jul 10, 5:00 PM CDT	Severe Thunderstorm Warning	MRX	Hamilton, Meigs	45 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, 4.9 hours before the alert went out and 120 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: 1671 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 571 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 158 m²/s²
0-3 km storm-relative helicity: 151 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 4.5

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 10, 10:23 AM CDT	Mesoscale Discussion	SPC	Colbert, Franklin, Lauderdale, Lawrence, Limestone, Madison and 1 more	97 min
Jul 10, 1:33 PM CDT	Mesoscale Discussion	SPC	Bibb, Blount, Calhoun, Cherokee, Clay, Cleburne and 21 more	117 min
Jul 10, 4:38 PM CDT	Mesoscale Discussion	SPC	Cherokee, Cleburne	37 min
Jul 10, 9:20 AM CDT	Mesoscale Discussion	SPC	Banks, Barrow, Catoosa, Cherokee, Clarke, Dawson and 26 more	85 min
Jul 10, 10:20 AM CDT	Severe Thunderstorm Watch	SPC	Baldwin, Banks, Barrow, Bartow, Burke, Butts and 58 more	7 hr
Jul 10, 6:53 PM CDT	Mesoscale Discussion	SPC	Fannin, Murray, Towns	97 min
Jul 10, 4:50 PM CDT	Severe Thunderstorm Watch	SPC	Anderson, Bledsoe, Blount, Bradley, Campbell, Carter and 25 more	4 hr

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.