Alert archive / Tennessee / Tornado Watches in 2008
Tornado Watch 43
The Storm Prediction Center issued this tornado watch at Feb 6, 2008, 12:59 AM EST for Campbell County, Morgan County, Scott County, Tennessee. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 6, 2008, 12:59 AM EST (05:59 UTC)
- Expired
- Feb 6, 2008, 5:08 AM EST
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
Counties Campbell County, TN, Morgan County, TN, Scott County, TN
The radar
The Nashville radar (KOHX), 40 km from the middle of the area, began a volume at 05:59 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
- 30%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 30%
- 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%
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, 6.0 hours before the alert went out and 37 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
- 706 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 812 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 300 m²/s²
- 0-3 km storm-relative helicity
- 362 m²/s²
- Significant tornado parameter
- 1.6
- Supercell composite
- 3.2
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 060557
SEL3
SPC WW 060557
TNZ000-061100-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 43
NWS STORM PREDICTION CENTER NORMAN OK
1200 AM CST WED FEB 6 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
MIDDLE TENNESSEE
EFFECTIVE THIS WEDNESDAY MORNING FROM MIDNIGHT UNTIL 500 AM CST.
TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 65 STATUTE
MILES EAST AND WEST OF A LINE FROM 60 MILES NORTH NORTHWEST OF
CROSSVILLE TENNESSEE TO 80 MILES SOUTH OF NASHVILLE TENNESSEE.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU3).
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.
OTHER WATCH INFORMATION...CONTINUE...WW 37...WW 39...WW 40...WW
41...WW 42...
DISCUSSION...STRONG TO SEVERE THUNDERSTORMS CONTINUE TO AFFECT
WESTERN AND MIDDLE TN...AND WILL TRACK EASTWARD ACROSS WATCH AREA
OVERNIGHT. SQUALL LINE WILL POSE RISK OF DAMAGING WINDS...WHILE
ISOLATED CELLS AHEAD OF LINE MAY PRODUCE HAIL AND TORNADOES.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
450. MEAN STORM MOTION VECTOR 24035.
...HARTSPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 5, 7:15 PM EST | Mesoscale Discussion | SPC | Allen, Anderson, Barren, Boone, Boyle, Bracken and 49 more | 90 min |
| Feb 5, 8:08 PM EST | Tornado Watch | SPC | Adair, Allen, Anderson, Barren, Boone, Bourbon and 53 more | 6 hr |
| Feb 5, 9:07 PM EST | Mesoscale Discussion | SPC | Ballard, Calloway, Carlisle, Crittenden, Fulton, Graves and 5 more | 83 min |
| Feb 5, 10:19 PM EST | Mesoscale Discussion | SPC | Adair, Allen, Anderson, Barren, Bath, Bell and 99 more | 86 min |
| Feb 6, 12:41 AM EST | Tornado Watch | SPC | Adair, Allen, Barren, Bath, Bourbon, Boyd and 44 more | 5 hr |
| Feb 6, 2:31 AM EST | Severe Thunderstorm Watch | SPC | Bell, Floyd, Harlan, Knott, Leslie, Letcher and 3 more | 3 hr |
| Feb 6, 2:48 AM EST | Mesoscale Discussion | SPC | Bath, Bell, Boyd, Breathitt, Carter, Clay and 37 more | 87 min |
| Feb 6, 4:49 AM EST | Mesoscale Discussion | SPC | Letcher | 86 min |
| Feb 6, 8:49 AM EST | Mesoscale Discussion | SPC | Pike | 116 min |
| Feb 6, 11:54 AM EST | Mesoscale Discussion | SPC | Adair, Anderson, Barren, Bath, Boone, Bourbon and 77 more | 96 min |
| Feb 5, 7:59 PM EST | Mesoscale Discussion | SPC | Cheatham, Davidson, Dickson, Giles, Hickman, Houston and 12 more | 91 min |
| Feb 5, 8:19 PM EST | Tornado Watch | SPC | Benton, Cheatham, Davidson, Dickson, Giles, Hickman and 17 more | 6 hr |
| Feb 5, 10:39 PM EST | Mesoscale Discussion | SPC | Bedford, Benton, Cannon, Cheatham, Coffee, Davidson and 20 more | 96 min |
| Feb 5, 11:01 PM EST | Tornado Watch | SPC | Chester, Decatur, Franklin, Hardeman, Hardin, Henderson and 3 more | 8 hr |
| Feb 6, 3:41 AM EST | Mesoscale Discussion | SPC | Anderson, Bedford, Bledsoe, Bradley, Campbell, Cannon and 42 more | 2 hr |
| Feb 6, 5:06 AM EST | Tornado Watch | SPC | Anderson, Bledsoe, Blount, Bradley, Campbell, Cannon and 31 more | 6 hr |
| Feb 6, 7:10 AM EST | Mesoscale Discussion | SPC | Bradley, Hamilton, McMinn, Meigs, Polk, Rhea | 2 hr |
Nearby
Tornado Watches in Tennessee, 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.