Alert archive / Tennessee / Tornado Watches in 2008
Tornado Watch 11
The Storm Prediction Center issued this tornado watch at Jan 8, 2008, 6:36 PM CST for 22 counties in Alabama; 29 counties in Mississippi; 30 counties in Tennessee. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Jan 8, 2008, 6:36 PM CST (00:36 UTC)
- Expired
- Jan 9, 2008, 12:24 AM CST
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 60 kt
All 81 counties
Blount County, AL, Choctaw County, AL, Colbert County, AL, Cullman County, AL, Fayette County, AL, Franklin County, AL, Greene County, AL, Hale County, AL, Jefferson County, AL, Lamar County, AL, Lauderdale County, AL, Lawrence County, AL, Limestone County, AL, Madison County, AL, Marengo County, AL, Marion County, AL, Morgan County, AL, Pickens County, AL, Sumter County, AL, Tuscaloosa County, AL, Walker County, AL, Winston County, AL, Clarke County, MS, Clay County, MS, Covington County, MS, Forrest County, MS, Greene County, MS, Jasper County, MS, Jefferson Davis County, MS, Jones County, MS, Kemper County, MS, Lamar County, MS, Lauderdale County, MS, Lawrence County, MS, Leake County, MS, Lincoln County, MS, Lowndes County, MS, Marion County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Oktibbeha County, MS, Perry County, MS, Pike County, MS, Rankin County, MS, Scott County, MS, Simpson County, MS, Smith County, MS, Walthall County, MS, Wayne County, MS, Winston County, MS, Bedford County, TN, Cannon County, TN, Clay County, TN, Coffee County, TN, Cumberland County, TN, Davidson County, TN, DeKalb County, TN, Fentress County, TN, Franklin County, TN, Giles County, TN, Grundy County, TN, Jackson County, TN, Lawrence County, TN, Lincoln County, TN, Macon County, TN, Marshall County, TN, Maury County, TN, Moore County, TN, Overton County, TN, Pickett County, TN, Putnam County, TN, Rutherford County, TN, Smith County, TN, Sumner County, TN, Trousdale County, TN, Van Buren County, TN, Warren County, TN, White County, TN, Williamson County, TN, Wilson County, TN
The radar
The Columbus AFB radar (KGWX), 88 km from the middle of the area, began a volume at 00:36 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
- 50%
- One or more gusts of 65 knots or more
- 5%
- Ten or more severe hail reports
- 10%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
21 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 8, 6:43 PM CST | Tornado Warning | JAN | Jasper, Smith | 47 min |
| Jan 8, 6:44 PM CST | Severe Thunderstorm Warning | BMX | Lamar | 36 min |
| Jan 8, 6:58 PM CST | Severe Thunderstorm Warning | LIX | Pike, Walthall | 32 min |
| Jan 8, 6:59 PM CST | Severe Thunderstorm Warning | BMX | Lamar, Pickens | 46 min |
| Jan 8, 7:10 PM CST | Severe Thunderstorm Warning | JAN | Marion | 50 min |
| Jan 8, 7:12 PM CST | Severe Thunderstorm Warning | BMX | Fayette, Tuscaloosa | 33 min |
| Jan 8, 7:28 PM CST | Severe Thunderstorm Warning | JAN | Kemper, Noxubee, Winston | 47 min |
| Jan 8, 7:44 PM CST | Severe Thunderstorm Warning | BMX | Fayette, Tuscaloosa, Walker | 31 min |
| Jan 8, 7:44 PM CST | Severe Thunderstorm Warning | JAN | Kemper | 46 min |
| Jan 8, 7:44 PM CST | Severe Thunderstorm Warning | JAN | Simpson, Smith | 46 min |
| Jan 8, 8:09 PM CST | Severe Thunderstorm Warning | HUN | Limestone | 21 min |
| Jan 8, 8:19 PM CST | Severe Thunderstorm Warning | JAN | Clarke, Jasper, Smith | 41 min |
| Jan 8, 8:27 PM CST | Severe Thunderstorm Warning | HUN | Lincoln, Moore | 33 min |
| Jan 8, 8:29 PM CST | Severe Thunderstorm Warning | HUN | Limestone | 16 min |
| Jan 8, 8:31 PM CST | Severe Thunderstorm Warning | LIX | Amite, Pike | 44 min |
| Jan 8, 8:34 PM CST | Severe Thunderstorm Warning | JAN | Forrest, Lamar | 41 min |
| Jan 8, 8:37 PM CST | Severe Thunderstorm Warning | JAN | Lauderdale | 38 min |
| Jan 8, 8:41 PM CST | Severe Thunderstorm Warning | JAN | Jasper, Newton | 34 min |
| Jan 8, 9:01 PM CST | Severe Thunderstorm Warning | JAN | Clarke, Jasper | 44 min |
| Jan 8, 9:02 PM CST | Severe Thunderstorm Warning | HUN | Franklin, Lincoln, Moore | 28 min |
| Jan 8, 9:16 PM CST | Severe Thunderstorm Warning | LIX | Pike, Walthall | 32 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
Birmingham, AL (KBMX), launched 00:00Z, 0.6 hours before the alert went out and 155 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
- 9 J/kg
- Mixed-layer CIN
- -111 J/kg
- Mixed-layer LCL
- 864 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 289 m²/s²
- 0-3 km storm-relative helicity
- 336 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
210
WWUS20 KWNS 090037
SEL1
SPC WW 090037
ALZ000-MSZ000-TNZ000-090700-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 11
NWS STORM PREDICTION CENTER NORMAN OK
640 PM CST TUE JAN 8 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
NORTHERN AND WESTERN ALABAMA
EASTERN AND SOUTHERN MISSISSIPPI
MIDDLE TENNESSEE
EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 640 PM
UNTIL 100 AM CST.
TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 75 STATUTE
MILES EAST AND WEST OF A LINE FROM 50 MILES NORTH NORTHWEST OF
CROSSVILLE TENNESSEE TO 20 MILES EAST SOUTHEAST OF MC COMB
MISSISSIPPI. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).
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...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 10. WATCH NUMBER 10 WILL NOT BE IN EFFECT AFTER 640
PM CST. CONTINUE...WW 9...
DISCUSSION...CHANCE FOR ISOLD TORNADOES AND LOCALLY DAMAGING WIND
EXPECTED TO PERSIST FROM THE MID TN VLY S INTO SRN MS/WRN AL THIS
EVENING AS PREFRONTAL SQLN CONTINUES EWD. THE STRONGEST MASS
FORCING AND SHEAR WILL LIFT N AWAY FROM REGION WITH TIME. BUT
PRESENCE OF EXISTING SUSTAINED STORMS IN A SEASONABLY WARM...MOIST
AND HIGHLY SHEARED ENVIRONMENT SUGGEST A CONTINUED SVR RISK THROUGH
AT LEAST MID EVENING.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 400.
MEAN STORM MOTION VECTOR 25040.
...CORFIDISPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 8, 9:32 PM CST | Mesoscale Discussion | SPC | Bibb, Blount, Chilton, Choctaw, Cullman, DeKalb and 13 more | 58 min |
Nearby
Tornado Watches in Tennessee, 2008Tornado Watches in Mississippi, 2008Tornado Watches in Alabama, 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.