Alert archive / Tennessee / Severe Thunderstorm Watches in 2007
Severe Thunderstorm Watch 40
The Storm Prediction Center issued this severe thunderstorm watch at Mar 1, 2007, 1:05 AM CST for 5 states. It took effect at Mar 1, 2007, 1:10 AM CST. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 1, 2007, 1:05 AM CST (07:05 UTC)
- In effect from
- Mar 1, 2007, 1:10 AM CST
- Expired
- Mar 1, 2007, 8:00 AM CST
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
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, Pulaski 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, 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 radar
The Paducah radar (KPAH), 105 km from the middle of the area, began a volume at 07:07 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 20%
- One or more EF2 to EF5 tornadoes
- 5%
- Ten or more severe wind reports
- 20%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 40%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
12 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 1, 1:15 AM CST | Severe Thunderstorm Warning | MEG | Henry | 18 min |
| Mar 1, 1:19 AM CST | Severe Thunderstorm Warning | MEG | Lee, Prentiss | 26 min |
| Mar 1, 1:20 AM CST | Severe Thunderstorm Warning | PAH | Hopkins, McLean | 25 min |
| Mar 1, 1:29 AM CST | Severe Thunderstorm Warning | MEG | Benton, Tippah | 31 min |
| Mar 1, 1:35 AM CST | Severe Thunderstorm Warning | OHX | Stewart | 10 min |
| Mar 1, 1:38 AM CST | Severe Thunderstorm Warning | PAH | Trigg | 22 min |
| Mar 1, 1:43 AM CST | Severe Thunderstorm Warning | OHX | Perry | 17 min |
| Mar 1, 1:46 AM CST | Severe Thunderstorm Warning | OHX | Hickman | 44 min |
| Mar 1, 2:10 AM CST | Severe Thunderstorm Warning | OHX | Dickson | 35 min |
| Mar 1, 2:58 AM CST | Severe Thunderstorm Warning | MEG | Lee | 32 min |
| Mar 1, 3:11 AM CST | Severe Thunderstorm Warning | MEG | Prentiss | 34 min |
| Mar 1, 3:59 AM CST | Severe Thunderstorm Warning | OHX | Wayne | 21 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 00:00Z, 7.1 hours before the alert went out and 161 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.
- 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
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, 2:57 AM CST | Mesoscale Discussion | SPC | Autauga, Barbour, Bullock, Butler, Clarke, Coffee and 15 more | 2 hr |
| Mar 1, 4:18 AM CST | Mesoscale Discussion | SPC | Colbert, Franklin, Lauderdale | 117 min |
| 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 | 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 | 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 |
| Feb 28, 6:11 PM CST | Mesoscale Discussion | SPC | Buchanan, Caldwell, Carroll, Clay, Clinton, Daviess and 10 more | 94 min |
| Feb 28, 6:37 PM CST | Severe Thunderstorm Watch | SPC | Adair, Andrew, Buchanan, Caldwell, Carroll, Chariton and 16 more | 7 hr |
| Feb 28, 6:50 PM CST | Mesoscale Discussion | SPC | Barton, Bates, Cass, Cedar, Dade, Henry and 7 more | 85 min |
| Feb 28, 7:10 PM CST | Tornado Watch | SPC | Bates, Benton, Cass, Cedar, Cooper, Henry and 6 more | 7 hr |
| Feb 28, 9:48 PM CST | Mesoscale Discussion | SPC | Barton, Bates, Benton, Boone, Camden, Cass and 17 more | 87 min |
| Mar 1, 1:32 AM CST | Tornado Watch | SPC | Barry, Barton, Bates, Benton, Camden, Cedar and 18 more | 6 hr |
Nearby
Severe Thunderstorm Watches in Tennessee, 2007Severe Thunderstorm Watches in Kentucky, 2007Severe Thunderstorm Watches in Mississippi, 2007Every severe thunderstorm watch 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; radar from the NEXRAD Level II archive.