Alert archive / Tennessee / Tornado Watches in 2008

Tornado Watch 193

April 10, 20086 states

The Storm Prediction Center issued this tornado watch at Apr 10, 2008, 5:03 PM CDT for 6 states. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Apr 10, 2008, 5:03 PM CDT (22:03 UTC)
Expired
Apr 10, 2008, 11:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
Largest hail expected
1.5 in
Strongest gust expected
60 kt
All 92 counties

Edwards County, IL, Franklin County, IL, Gallatin County, IL, Hamilton County, IL, Hardin County, IL, Jackson County, IL, Jefferson County, IL, Johnson County, IL, Massac County, IL, Perry County, IL, Pope County, IL, Pulaski County, IL, Saline County, IL, Union County, IL, Wabash County, IL, Wayne County, IL, White County, IL, Williamson County, IL, Gibson County, IN, Pike County, IN, Posey County, IN, Spencer County, IN, Vanderburgh County, IN, Warrick County, IN, 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, Mississippi County, MO, Benton County, MS, Bolivar County, MS, Calhoun County, MS, Carroll County, MS, Coahoma County, MS, DeSoto County, MS, Grenada County, MS, Lafayette County, MS, Leflore County, MS, Marshall County, MS, Montgomery County, MS, Panola County, MS, Pontotoc County, MS, Quitman County, MS, Sunflower County, MS, Tallahatchie County, MS, Tate County, MS, Tippah County, MS, Tunica County, MS, Union County, MS, Webster County, MS, Yalobusha County, MS, Benton County, TN, Carroll County, TN, Chester County, TN, Crockett County, TN, Dyer County, TN, Fayette County, TN, Gibson County, TN, Hardeman County, TN, Haywood County, TN, Henderson County, TN, Henry County, TN, Houston County, TN, Humphreys County, TN, Lake County, TN, Lauderdale County, TN, Madison County, TN, McNairy County, TN, Montgomery County, TN, Obion County, TN, Shelby County, TN, Stewart County, TN, Tipton County, TN, Weakley County, TN

The radar

The Paducah radar (KPAH), 65 km from the middle of the area, began a volume at 22:07 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
50%
One or more EF2 to EF5 tornadoes
30%
Ten or more severe wind reports
40%
One or more gusts of 65 knots or more
30%
Ten or more severe hail reports
40%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Apr 10, 5:17 PM CDTSevere Thunderstorm WarningMEGLauderdale, Tipton28 min
Apr 10, 7:18 PM CDTSevere Thunderstorm WarningMEGMarshall27 min
Apr 10, 7:20 PM CDTSevere Thunderstorm WarningMEGHardeman, Haywood, Madison40 min
Apr 10, 7:29 PM CDTSevere Thunderstorm WarningMEGLafayette, Panola31 min
Apr 10, 7:46 PM CDTSevere Thunderstorm WarningMEGMarshall29 min
Apr 10, 8:03 PM CDTSevere Thunderstorm WarningPAHFulton27 min
Apr 10, 8:22 PM CDTTornado WarningMEGHenry38 min
Apr 10, 8:31 PM CDTSevere Thunderstorm WarningPAHCarlisle, Hickman17 min
Apr 10, 8:42 PM CDTSevere Thunderstorm WarningOHXStewart33 min
Apr 10, 9:52 PM CDTSevere Thunderstorm WarningMEGCrockett, Gibson, Haywood, Madison38 min
Apr 10, 10:10 PM CDTSevere Thunderstorm WarningMEGShelby, Tipton33 min
Apr 10, 10:12 PM CDTSevere Thunderstorm WarningMEGGibson, Henry, Obion, Weakley48 min
Apr 10, 10:19 PM CDTSevere Thunderstorm WarningPAHSpencer, Warrick41 min
Apr 10, 10:25 PM CDTSevere Thunderstorm WarningMEGCarroll, Gibson, Henry, Weakley35 min
Apr 10, 10:39 PM CDTTornado WarningPAHSpencer20 min
Apr 10, 10:39 PM CDTSevere Thunderstorm WarningPAHCalloway36 min
Apr 10, 10:57 PM CDTFlash Flood WarningMEGFayette, Shelby, Tipton4 hr
Apr 10, 11:00 PM CDTSevere Thunderstorm WarningMEGCarroll, Henry30 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, 10.1 hours before the alert went out and 203 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-pSkew-T log-p diagram, Nashville Metro, TN at 12:00Z on 2008-04-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Nashville Metro, TN at 12:00Z on 2008-04-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 102 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1308 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
102 m²/s²
0-3 km storm-relative helicity
120 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.

IssuedProductOfficeCountiesLasted
Apr 9, 7:28 PM CDTMesoscale DiscussionSPCCrawford, Franklin, Hempstead, Howard, Johnson, Little River and 8 more62 min
Apr 9, 8:10 PM CDTTornado WatchSPCHempstead, Howard, Johnson, Little River, Logan, Montgomery and 6 more6 hr
Apr 9, 10:40 PM CDTTornado WatchSPCCrawford, Franklin, Sebastian7 hr
Apr 10, 1:45 AM CDTTornado WatchSPCBaxter, Boone, Cleburne, Conway, Faulkner, Fulton and 16 more8 hr
Apr 10, 3:00 AM CDTMesoscale DiscussionSPCClay, Craighead, Crittenden, Cross, Greene, Mississippi and 1 more60 min
Apr 10, 3:28 AM CDTTornado WatchSPCClay, Craighead, Crittenden, Cross, Greene, Lawrence and 4 more7 hr
Apr 10, 3:54 AM CDTTornado WatchSPCBenton, Carroll, Crawford, Franklin, Hempstead, Howard and 10 more8 hr
Apr 10, 5:55 AM CDTMesoscale DiscussionSPCCrawford, Franklin, Howard, Johnson, Little River, Logan and 4 more65 min
Apr 10, 8:32 AM CDTMesoscale DiscussionSPCAshley, Bradley, Calhoun, Clark, Cleveland, Columbia and 22 more58 min
Apr 10, 8:42 AM CDTTornado WatchSPCArkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 19 more7 hr
Apr 10, 9:27 AM CDTMesoscale DiscussionSPCClay, Cleburne, Conway, Craighead, Crittenden, Cross and 16 more2 hr
Apr 10, 9:51 AM CDTTornado WatchSPCClay, Cleburne, Conway, Craighead, Crittenden, Cross and 19 more7 hr
Apr 10, 10:51 AM CDTMesoscale DiscussionSPCArkansas, Ashley, Bradley, Calhoun, Clay, Cleveland and 28 more84 min
Apr 10, 1:41 PM CDTMesoscale DiscussionSPCArkansas, Ashley, Bradley, Calhoun, Clay, Cleveland and 20 more2 hr
Apr 10, 11:16 AM CDTMesoscale DiscussionSPCChampaign, Clark, Clay, Coles, Crawford, Cumberland and 25 more2 hr
Apr 10, 4:55 PM CDTTornado WatchSPCAdams, Brown, Calhoun, Hancock, Henderson, McDonough and 3 more5 hr
Apr 10, 6:44 PM CDTMesoscale DiscussionSPCAdams, Brown, Calhoun, Hancock, Henderson, McDonough and 5 more61 min
Apr 10, 6:56 AM CDTMesoscale DiscussionSPCChristian, Douglas, Greene, Howell, Laclede, Maries and 9 more64 min
Apr 10, 7:44 AM CDTTornado WatchSPCDent, Douglas, Howell, Oregon, Ozark, Shannon and 2 more2 hr
Apr 10, 2:03 PM CDTMesoscale DiscussionSPCAndrew, Barton, Bates, Benton, Buchanan, Caldwell and 21 more117 min
Apr 10, 2:28 PM CDTSevere Thunderstorm WatchSPCAdair, Andrew, Atchison, Barton, Bates, Benton and 51 more7 hr

Nearby

Tornado Watches in Tennessee, 2008Tornado Watches in Kentucky, 2008Tornado Watches in Mississippi, 2008Every tornado watch in 2008

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.