Alert archive / Tennessee / Mesoscale Discussions in 2003

Mesoscale Discussion 1759

July 10, 20034 states

The Storm Prediction Center issued this mesoscale discussion at Jul 10, 2003, 10:23 AM CDT for 4 states. It was in force for 97 min.

The area

The outline as issued.

The facts

Issued: Jul 10, 2003, 10:23 AM CDT (15:23 UTC)
Expired: Jul 10, 2003, 12:00 PM CDT
In force: 97 min
Issued by: the Storm Prediction Center

All 63 counties

Colbert County, AL, Franklin County, AL, Lauderdale County, AL, Lawrence County, AL, Limestone County, AL, Madison County, AL, Morgan County, AL, Allen County, KY, Barren County, KY, Cumberland County, KY, Edmonson County, KY, Logan County, KY, Monroe County, KY, Simpson County, KY, Warren County, KY, Alcorn County, MS, Benton County, MS, Itawamba County, MS, Lafayette County, MS, Lee County, MS, Prentiss County, MS, Tippah County, MS, Tishomingo County, MS, Union County, MS, Bedford County, TN, Cannon County, TN, Cheatham County, TN, Clay County, TN, Coffee County, TN, Davidson County, TN, Decatur County, TN, DeKalb County, TN, Dickson County, TN, Franklin County, TN, Giles County, TN, Grundy County, TN, Hardin County, TN, Hickman County, TN, Humphreys County, TN, Jackson County, TN, Lawrence County, TN, Lewis County, TN, Lincoln County, TN, Macon County, TN, Marshall County, TN, Maury County, TN, McNairy County, TN, Montgomery County, TN, Moore County, TN, Overton County, TN, Perry County, TN, Pickett County, TN, Putnam County, TN, Robertson County, TN, Rutherford County, TN, Smith County, TN, Sumner County, TN, Trousdale County, TN, Warren County, TN, Wayne County, TN, White County, TN, Williamson County, TN, Wilson County, TN

The radar

The Nashville radar (KOHX), 131 km from the middle of the area, began a volume at 15:27 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.

The watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 3.4 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

The text

As transmitted, in the capitals the NWS used until 2016.

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SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 10, 11:55 AM CDT	Severe Thunderstorm Watch	SPC	Bibb, Blount, Calhoun, Chambers, Cherokee, Clay and 22 more	5 hr
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 9, 8:20 PM CDT	Severe Thunderstorm Watch	SPC	Oldham	6 hr
Jul 10, 9:20 AM CDT	Mesoscale Discussion	SPC	Bell, Clay, Harlan, Knox, Laurel, Leslie and 3 more	85 min
Jul 10, 11:13 AM CDT	Mesoscale Discussion	SPC	Anderson, Bath, Boone, Bourbon, Boyle, Bracken and 47 more	2 hr
Jul 10, 11:30 AM CDT	Severe Thunderstorm Watch	SPC	Adair, Allen, Anderson, Barren, Bath, Boone and 80 more	6 hr
Jul 10, 1:23 PM CDT	Mesoscale Discussion	SPC	Adair, Allen, Anderson, Barren, Bath, Bourbon and 74 more	97 min
Jul 10, 2:45 PM CDT	Severe Thunderstorm Watch	SPC	Bell, Breathitt, Clay, Floyd, Harlan, Johnson and 10 more	6 hr
Jul 10, 9:45 AM CDT	Mesoscale Discussion	SPC	Bolivar, Carroll, Hinds, Holmes, Humphreys, Issaquena and 7 more	60 min
Jul 10, 10:40 AM CDT	Severe Thunderstorm Watch	SPC	Bolivar, Carroll, Claiborne, Grenada, Hinds, Holmes and 12 more	5 hr
Jul 10, 12:15 PM CDT	Severe Thunderstorm Watch	SPC	Attala, Calhoun, Chickasaw, Choctaw, Clarke, Clay and 16 more	4 hr
Jul 10, 2:05 PM CDT	Mesoscale Discussion	SPC	Attala, Bolivar, Calhoun, Carroll, Chickasaw, Choctaw and 32 more	115 min
Jul 10, 10:20 AM CDT	Severe Thunderstorm Watch	SPC	Anderson, Blount, Bradley, Campbell, Carter, Claiborne and 24 more	7 hr
Jul 10, 4:50 PM CDT	Severe Thunderstorm Watch	SPC	Anderson, Bledsoe, Blount, Bradley, Campbell, Carter and 25 more	4 hr
Jul 10, 6:53 PM CDT	Mesoscale Discussion	SPC	Carter, Cocke, Greene, Hamblen, Hawkins, Jefferson and 5 more	97 min

Nearby

Mesoscale Discussions in Tennessee, 2003 Mesoscale Discussions in Mississippi, 2003 Mesoscale Discussions in Kentucky, 2003 Every mesoscale discussion 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.