Alert archive / Georgia / Tornado Watches in 2008

Tornado Watch 19

January 10, 200833 counties in Alabama; 35 counties in Georgia

The Storm Prediction Center issued this tornado watch at Jan 10, 2008, 5:16 PM CST for 33 counties in Alabama; 35 counties in Georgia. It was in force for 8 hr.

The area

The outline as issued.

The facts

Issued
Jan 10, 2008, 5:16 PM CST (23:16 UTC)
Expired
Jan 11, 2008, 1:00 AM CST
In force
8 hr
Issued by
the Storm Prediction Center
Largest hail expected
1 in
Strongest gust expected
60 kt
All 68 counties

Autauga County, AL, Barbour County, AL, Bullock County, AL, Butler County, AL, Calhoun County, AL, Chambers County, AL, Cherokee County, AL, Chilton County, AL, Clay County, AL, Cleburne County, AL, Coffee County, AL, Conecuh County, AL, Coosa County, AL, Covington County, AL, Crenshaw County, AL, Dale County, AL, DeKalb County, AL, Elmore County, AL, Escambia County, AL, Etowah County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Lee County, AL, Lowndes County, AL, Macon County, AL, Montgomery County, AL, Pike County, AL, Randolph County, AL, Russell County, AL, St. Clair County, AL, Talladega County, AL, Tallapoosa County, AL, Bartow County, GA, Carroll County, GA, Catoosa County, GA, Chattahoochee County, GA, Chattooga County, GA, Cherokee County, GA, Clayton County, GA, Cobb County, GA, Coweta County, GA, Dade County, GA, Dawson County, GA, DeKalb County, GA, Douglas County, GA, Fannin County, GA, Fayette County, GA, Floyd County, GA, Forsyth County, GA, Fulton County, GA, Gilmer County, GA, Gordon County, GA, Haralson County, GA, Harris County, GA, Heard County, GA, Lumpkin County, GA, Meriwether County, GA, Murray County, GA, Muscogee County, GA, Paulding County, GA, Pickens County, GA, Polk County, GA, Stewart County, GA, Troup County, GA, Union County, GA, Walker County, GA, Whitfield County, GA

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes
40%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
40%
One or more gusts of 65 knots or more
30%
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.

IssuedProductOfficeCountiesLasted
Jan 10, 5:29 PM CSTSevere Thunderstorm WarningHUNDeKalb, Jackson46 min
Jan 10, 5:41 PM CSTSevere Thunderstorm WarningFFCChattooga, Dade, Walker49 min
Jan 10, 5:48 PM CSTSevere Thunderstorm WarningFFCDade, Walker42 min
Jan 10, 5:50 PM CSTSevere Thunderstorm WarningHUNDeKalb25 min
Jan 10, 5:56 PM CSTSevere Thunderstorm WarningBMXCherokee19 min
Jan 10, 6:10 PM CSTTornado WarningBMXSt. Clair, Talladega5 min
Jan 10, 6:16 PM CSTTornado WarningBMXCalhoun, St. Clair, Shelby, Talladega22 min
Jan 10, 6:17 PM CSTSevere Thunderstorm WarningFFCCatoosa43 min
Jan 10, 6:30 PM CSTSevere Thunderstorm WarningFFCWalker, Whitfield30 min
Jan 10, 6:31 PM CSTTornado WarningMOBButler, Conecuh, Monroe44 min
Jan 10, 7:49 PM CSTSevere Thunderstorm WarningMOBButler, Crenshaw26 min
Jan 10, 7:53 PM CSTSevere Thunderstorm WarningBMXLowndes, Montgomery37 min
Jan 10, 8:26 PM CSTSevere Thunderstorm WarningBMXBullock, Macon, Pike49 min
Jan 10, 8:29 PM CSTSevere Thunderstorm WarningMOBButler, Conecuh31 min
Jan 10, 9:34 PM CSTTornado WarningMOBCrenshaw26 min
Jan 10, 9:43 PM CSTTornado WarningBMXPike32 min
Jan 10, 10:11 PM CSTTornado WarningBMXBullock, Pike34 min
Jan 10, 10:34 PM CSTTornado WarningBMXBullock26 min
Jan 10, 10:58 PM CSTTornado WarningBMXBullock, Macon, Russell32 min
Jan 10, 11:33 PM CSTSevere Thunderstorm WarningFFCChattahoochee, Harris, Muscogee42 min
Jan 10, 11:46 PM CSTSevere Thunderstorm WarningBMXRussell29 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 12:00Z, 11.3 hours before the alert went out and 99 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, Birmingham, AL at 12:00Z on 2008-01-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 261 joules per kilogram.LCLLFCEL10008507005003002001001 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, Birmingham, AL at 12:00Z on 2008-01-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 162 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
261 J/kg
Mixed-layer CIN
-34 J/kg
Mixed-layer LCL
621 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
162 m²/s²
0-3 km storm-relative helicity
132 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000
WWUS20 KWNS 102320
SEL9  
SPC WW 102320
ALZ000-GAZ000-110600-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 19
NWS STORM PREDICTION CENTER NORMAN OK
515 PM CST THU JAN 10 2008

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF 

       SOUTHERN AND EASTERN ALABAMA
       NORTHERN AND WEST CENTRAL GEORGIA

EFFECTIVE THIS THURSDAY AFTERNOON FROM 515 PM UNTIL MIDNIGHT 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 60 STATUTE
MILES EAST AND WEST OF A LINE FROM 45 MILES NORTH NORTHEAST OF
ROME GEORGIA TO 45 MILES SOUTHEAST OF EVERGREEN ALABAMA.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU9).

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 17...WW 18...

DISCUSSION...STORMS FROM NRN AL INTO SERN MS HAVE ORGANIZED INTO A
QUASI-LINEAR STRUCTURE WITH EMBEDDED BOW ECHOES/LEWPS AND ISOLATED
SUPERCELLS.  ALTHOUGH CONVECTION IS MOVING EAST OF MOISTURE
AXIS...NWD ADVECTION OF LOW LEVEL MOISTURE IS EXPECTED TO CONTINUE
AS THE LOW LEVEL JET INTENSIFIES THIS EVENING OVER ERN AL INTO NWRN
GA.  CONTINUED VERY STRONG LOW LEVEL AND DEEP LAYER SHEAR WILL
ENHANCE STORM ORGANIZATION AND INTENSITY WITH POTENTIAL FOR DAMAGING
WIND GUSTS TO  OCCUR WITH BOW ECHOES...WITH TORNADOES REMAINING
POSSIBLE GIVE THE LARGE CLOCKWISE TURNING LOW LEVEL HODOGRAPHS.

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 23040.


...WEISS

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jan 10, 9:23 AM CSTMesoscale DiscussionSPCBibb, Blount, Colbert, Cullman, Fayette, Franklin and 13 more67 min
Jan 10, 11:33 AM CSTTornado Watch PDSSPCBaldwin, Bibb, Blount, Choctaw, Clarke, Colbert and 27 more9 hr
Jan 10, 1:42 PM CSTMesoscale DiscussionSPCChoctaw, Clarke, Colbert, Cullman, Fayette, Franklin and 15 more93 min
Jan 10, 3:05 PM CSTMesoscale DiscussionSPCAutauga, Bibb, Blount, Calhoun, Cherokee, Chilton and 40 more115 min
Jan 10, 3:42 PM CSTMesoscale DiscussionSPCBibb, Blount, Chilton, Choctaw, Clarke, Colbert and 30 more93 min
Jan 10, 5:25 PM CSTMesoscale DiscussionSPCAutauga, Baldwin, Bibb, Blount, Chilton, Choctaw and 32 more95 min

Nearby

Tornado Watches in Georgia, 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.