Alert archive / Tennessee / Mesoscale Discussions in 2004

Mesoscale Discussion 2462

November 24, 20046 states

The Storm Prediction Center issued this mesoscale discussion at Nov 24, 2004, 10:16 AM CST for 6 states. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued: Nov 24, 2004, 10:16 AM CST (16:16 UTC)
Expired: Nov 24, 2004, 12:45 PM CST
In force: 2 hr
Issued by: the Storm Prediction Center

All 57 counties

Gallatin County, IL, Hardin County, IL, Johnson County, IL, Massac County, IL, Pope County, IL, Pulaski County, IL, Saline County, IL, Posey County, IN, Vanderburgh County, IN, Ballard County, KY, Caldwell County, KY, Calloway County, KY, Carlisle County, KY, Christian County, KY, Crittenden County, KY, Fulton County, KY, Graves County, KY, Henderson County, KY, Hickman County, KY, Hopkins County, KY, Livingston County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Trigg County, KY, Union County, KY, Webster County, KY, Mississippi County, MO, Alcorn County, MS, Benton County, MS, Lafayette County, MS, Marshall County, MS, Prentiss County, MS, Tippah County, MS, Union County, MS, Benton County, TN, Carroll County, TN, Chester County, TN, Crockett County, TN, Decatur County, TN, Dyer County, TN, Fayette County, TN, Gibson County, TN, Hardeman County, TN, Hardin County, TN, Haywood County, TN, Henderson County, TN, Henry County, TN, Houston County, TN, Humphreys County, TN, Madison County, TN, McNairy County, TN, Obion County, TN, Perry County, TN, Stewart County, TN, Weakley County, TN

The radar

The Paducah radar (KPAH), 117 km from the middle of the area, began a volume at 16:19 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.

Tornado Watch 902Nov 24, 11:30 AM CST

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 12:00Z, 4.3 hours before the alert went out and 171 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: 21 J/kg
Mixed-layer CIN: -283 J/kg
Mixed-layer LCL: 867 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 436 m²/s²
0-3 km storm-relative helicity: 481 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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
Nov 24, 6:50 AM CST	Mesoscale Discussion	SPC	Adams, Brown, Cass, DeWitt, Ford, Fulton and 20 more	5 hr
Nov 24, 11:30 AM CST	Tornado Watch	SPC	Edwards, Gallatin, Hamilton, Hardin, Pope, Saline and 3 more	6 hr
Nov 24, 12:31 PM CST	Mesoscale Discussion	SPC	Brown, Bureau, Cass, Champaign, Christian, DeKalb and 32 more	5 hr
Nov 24, 12:55 PM CST	Mesoscale Discussion	SPC	Edwards, Gallatin, Hamilton, Hardin, Pope, Saline and 3 more	95 min
Nov 24, 2:56 PM CST	Mesoscale Discussion	SPC	Edwards, Gallatin, Hamilton, Hardin, Pope, Saline and 3 more	2 hr
Nov 24, 1:25 PM CST	Tornado Watch	SPC	Bartholomew, Brown, Clark, Crawford, Dearborn, Decatur and 16 more	5 hr
Nov 24, 5:02 PM CST	Mesoscale Discussion	SPC	Bartholomew, Brown, Clark, Crawford, Dearborn, Decatur and 12 more	28 min
Nov 24, 5:25 PM CST	Tornado Watch	SPC	Dearborn, Decatur, Fayette, Franklin, Ohio, Ripley and 4 more	4 hr
Nov 23, 6:35 PM CST	Tornado Watch	SPC	Alcorn, Attala, Benton, Calhoun, Carroll, Chickasaw and 28 more	7 hr
Nov 23, 7:53 PM CST	Mesoscale Discussion	SPC	Adams, Amite, Claiborne, Copiah, Franklin, Hinds and 13 more	37 min
Nov 23, 8:15 PM CST	Tornado Watch	SPC	Adams, Amite, Claiborne, Copiah, Franklin, Hinds and 15 more	6 hr
Nov 23, 9:00 PM CST	Mesoscale Discussion	SPC	Alcorn, Itawamba, Prentiss, Tishomingo	2 hr
Nov 23, 9:14 PM CST	Mesoscale Discussion	SPC	Adams, Claiborne, Franklin, Hinds, Humphreys, Issaquena and 5 more	2 hr
Nov 23, 9:20 PM CST	Tornado Watch	SPC	Itawamba, Lowndes, Monroe, Tishomingo	7 hr
Nov 23, 10:01 PM CST	Mesoscale Discussion	SPC	Adams, Amite, Claiborne, Copiah, Franklin, Issaquena and 4 more	119 min
Nov 24, 12:30 AM CST	Mesoscale Discussion	SPC	Clarke, Covington, Forrest, George, Greene, Hancock and 17 more	30 min
Nov 24, 12:45 AM CST	Tornado Watch	SPC	Clarke, Covington, Forrest, George, Greene, Jasper and 18 more	5 hr
Nov 24, 1:28 AM CST	Mesoscale Discussion	SPC	Adams, Amite, Claiborne, Copiah, Franklin, Hinds and 14 more	32 min
Nov 24, 1:45 AM CST	Tornado Watch	SPC	Adams, Amite, Attala, Claiborne, Copiah, Franklin and 15 more	4 hr
Nov 24, 2:43 AM CST	Mesoscale Discussion	SPC	Clarke, Covington, Forrest, George, Greene, Jasper and 21 more	62 min
Nov 24, 2:50 AM CST	Tornado Watch	SPC	Hancock, Harrison, Jackson	3 hr
Nov 24, 3:35 AM CST	Mesoscale Discussion	SPC	Lowndes	25 min
Nov 24, 4:57 AM CST	Mesoscale Discussion	SPC	Clarke, Forrest, George, Greene, Lamar, Pearl River and 3 more	63 min
Nov 24, 5:20 AM CST	Tornado Watch	SPC	George, Jackson	6 hr
Nov 24, 5:35 AM CST	Mesoscale Discussion	SPC	Hancock, Harrison, Jackson	25 min
Nov 24, 5:55 AM CST	Tornado Watch	SPC	Harrison, Jackson	2 hr

Nearby

Mesoscale Discussions in Tennessee, 2004 Mesoscale Discussions in Kentucky, 2004 Mesoscale Discussions in Illinois, 2004 Every mesoscale discussion in 2004

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.