Alert archive / Tennessee / Mesoscale Discussions in 2007

Mesoscale Discussion 232

March 1, 20075 states

The Storm Prediction Center issued this mesoscale discussion at Mar 1, 2007, 4:18 AM CST for 5 states. It was in force for 117 min.

The area

The outline as issued.

The facts

Issued: Mar 1, 2007, 4:18 AM CST (10:18 UTC)
Expired: Mar 1, 2007, 6:15 AM CST
In force: 117 min
Issued by: the Storm Prediction Center

All 93 counties

Colbert County, AL, Franklin County, AL, Lauderdale County, AL, Gallatin County, IL, Hardin County, IL, Johnson County, IL, Massac County, IL, Pope County, IL, Saline County, IL, Ballard County, KY, Caldwell County, KY, Calloway County, KY, Carlisle County, KY, Christian County, KY, Crittenden County, KY, Daviess 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, Muhlenberg County, KY, Todd County, KY, Trigg County, KY, Union County, KY, Webster County, KY, Alcorn County, MS, Benton County, MS, Calhoun County, MS, Chickasaw County, MS, Coahoma County, MS, DeSoto County, MS, Grenada County, MS, Itawamba County, MS, Lafayette County, MS, Lee County, MS, Marshall County, MS, Monroe County, MS, Panola County, MS, Pontotoc County, MS, Prentiss County, MS, Quitman County, MS, Tallahatchie County, MS, Tate County, MS, Tippah County, MS, Tishomingo County, MS, Tunica County, MS, Union County, MS, Yalobusha County, MS, Benton County, TN, Carroll County, TN, Cheatham County, TN, Chester County, TN, Crockett County, TN, Davidson County, TN, Decatur County, TN, Dickson County, TN, Dyer County, TN, Fayette County, TN, Gibson County, TN, Giles County, TN, Hardeman County, TN, Hardin County, TN, Haywood County, TN, Henderson County, TN, Henry County, TN, Hickman County, TN, Houston County, TN, Humphreys County, TN, Lake County, TN, Lauderdale County, TN, Lawrence County, TN, Lewis County, TN, Madison County, TN, Marshall County, TN, Maury County, TN, McNairy County, TN, Montgomery County, TN, Obion County, TN, Perry County, TN, Robertson County, TN, Shelby County, TN, Stewart County, TN, Sumner County, TN, Tipton County, TN, Wayne County, TN, Weakley County, TN, Williamson County, TN

The watches that followed

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

Tornado Watch 44Mar 1, 7:30 AM CST

The nearest sounding before it

Nashville Metro, TN (KBNA), launched 00:00Z, 10.3 hours before the alert went out and 149 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: 3081 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 177 m²/s²
0-3 km storm-relative helicity: 287 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
Mar 1, 12:12 AM CST	Mesoscale Discussion	SPC	Colbert, Franklin, Lauderdale	2 hr
Mar 1, 1:05 AM CST	Severe Thunderstorm Watch	SPC	Colbert, Franklin, Lauderdale	7 hr
Mar 1, 2:57 AM CST	Mesoscale Discussion	SPC	Autauga, Barbour, Bullock, Butler, Clarke, Coffee and 15 more	2 hr
Mar 1, 6:54 AM CST	Mesoscale Discussion	SPC	Bibb, Blount, Calhoun, Cherokee, Cleburne, Colbert and 24 more	66 min
Mar 1, 7:28 AM CST	Tornado Watch PDS	SPC	Baldwin, Bibb, Blount, Chilton, Choctaw, Clarke and 29 more	12 hr
Mar 1, 8:58 AM CST	Mesoscale Discussion	SPC	Barbour, Bullock, Coffee, Covington, Crenshaw, Dale and 7 more	2 hr
Mar 1, 9:47 AM CST	Tornado Watch PDS	SPC	Autauga, Barbour, Bullock, Butler, Calhoun, Chambers and 26 more	10 hr
Mar 1, 10:33 AM CST	Mesoscale Discussion	SPC	Colbert, Franklin, Lamar, Lauderdale, Marion, Pickens	117 min
Mar 1, 11:39 AM CST	Mesoscale Discussion	SPC	Autauga, Baldwin, Barbour, Bibb, Bullock, Butler and 35 more	2 hr
Mar 1, 1:40 PM CST	Mesoscale Discussion	SPC	Dale, Henry	65 min
Mar 1, 2:41 PM CST	Mesoscale Discussion	SPC	Autauga, Barbour, Bibb, Blount, Bullock, Butler and 43 more	94 min
Mar 1, 5:22 PM CST	Mesoscale Discussion	SPC	Autauga, Baldwin, Barbour, Bibb, Blount, Bullock and 59 more	83 min
Feb 28, 10:30 PM CST	Mesoscale Discussion	SPC	Adams, Brown, Cass, Fulton, Hancock, Henderson and 5 more	90 min
Feb 28, 11:48 PM CST	Mesoscale Discussion	SPC	Adams, Brown, Calhoun, Cass, Greene, Jersey and 5 more	57 min
Mar 1, 12:16 AM CST	Severe Thunderstorm Watch	SPC	Adams, Brown, Calhoun, Cass, Christian, Greene and 11 more	6 hr
Mar 1, 2:28 AM CST	Mesoscale Discussion	SPC	Adams, Brown, Calhoun, Cass, Christian, Greene and 11 more	92 min
Mar 1, 3:35 AM CST	Mesoscale Discussion	SPC	Clinton, Jackson, Monroe, Perry, Randolph, Saint Clair and 1 more	55 min
Mar 1, 3:58 AM CST	Tornado Watch	SPC	Alexander, Bond, Clinton, Fayette, Franklin, Jackson and 10 more	8 hr
Mar 1, 8:40 AM CST	Tornado Watch	SPC	Champaign, Christian, Clark, Clay, Coles, Crawford and 27 more	9 hr
Mar 1, 10:24 AM CST	Mesoscale Discussion	SPC	Brown, Bureau, Cass, Cook, DeKalb, DeWitt and 28 more	96 min
Mar 1, 11:25 AM CST	Severe Thunderstorm Watch	SPC	Boone, Bureau, Cook, DeKalb, DuPage, Ford and 23 more	6 hr
Mar 1, 12:48 PM CST	Mesoscale Discussion	SPC	Champaign, Clark, Clay, Coles, Crawford, Cumberland and 28 more	117 min
Mar 1, 1:47 PM CST	Mesoscale Discussion	SPC	Cook, DeKalb, DuPage, Ford, Grundy, Iroquois and 7 more	88 min
Mar 1, 3:43 PM CST	Mesoscale Discussion	SPC	Adair, Anderson, Barren, Bell, Boyle, Casey and 36 more	92 min
Mar 1, 5:23 AM CST	Mesoscale Discussion	SPC	Bolivar, Issaquena, Washington	97 min

Nearby

Mesoscale Discussions in Tennessee, 2007 Mesoscale Discussions in Mississippi, 2007 Mesoscale Discussions in Kentucky, 2007 Every mesoscale discussion in 2007

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.