Alert archive / Georgia / Tornado Watches in 2007

Tornado Watch 144

April 14, 2007Henry County, Houston County, Alabama; 10 counties in Florida; 63 counties in Georgia

The Storm Prediction Center issued this tornado watch at Apr 14, 2007, 10:45 PM CDT for Henry County, Houston County, Alabama; 10 counties in Florida; 63 counties in Georgia. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Apr 14, 2007, 10:45 PM CDT (03:45 UTC)
Expired
Apr 15, 2007, 5:00 AM CDT
In force
6 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
60 kt
All 75 counties

Henry County, AL, Houston County, AL, Calhoun County, FL, Franklin County, FL, Gadsden County, FL, Gulf County, FL, Jackson County, FL, Jefferson County, FL, Leon County, FL, Liberty County, FL, Madison County, FL, Wakulla County, FL, Appling County, GA, Atkinson County, GA, Bacon County, GA, Baker County, GA, Ben Hill County, GA, Berrien County, GA, Bleckley County, GA, Brooks County, GA, Bryan County, GA, Bulloch County, GA, Calhoun County, GA, Candler County, GA, Chatham County, GA, Clay County, GA, Clinch County, GA, Coffee County, GA, Colquitt County, GA, Cook County, GA, Crisp County, GA, Decatur County, GA, Dodge County, GA, Dooly County, GA, Dougherty County, GA, Early County, GA, Echols County, GA, Effingham County, GA, Emanuel County, GA, Evans County, GA, Grady County, GA, Irwin County, GA, Jeff Davis County, GA, Jenkins County, GA, Johnson County, GA, Lanier County, GA, Laurens County, GA, Lee County, GA, Liberty County, GA, Long County, GA, Lowndes County, GA, McIntosh County, GA, Miller County, GA, Mitchell County, GA, Montgomery County, GA, Pulaski County, GA, Quitman County, GA, Randolph County, GA, Screven County, GA, Seminole County, GA, Stewart County, GA, Sumter County, GA, Tattnall County, GA, Telfair County, GA, Terrell County, GA, Thomas County, GA, Tift County, GA, Toombs County, GA, Treutlen County, GA, Turner County, GA, Wayne County, GA, Webster County, GA, Wheeler County, GA, Wilcox County, GA, Worth 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
30%
One or more gusts of 65 knots or more
20%
Ten or more severe hail reports
30%
One or more hailstones of 2 inches or more
20%
Six or more combined severe hail and wind reports
60%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Apr 14, 10:53 PM CDTSevere Thunderstorm WarningTAEWorth42 min
Apr 14, 11:05 PM CDTSevere Thunderstorm WarningTAETurner40 min
Apr 14, 11:41 PM CDTSevere Thunderstorm WarningTAEIrwin, Tift49 min
Apr 15, 12:10 AM CDTSevere Thunderstorm WarningFFCDodge35 min
Apr 15, 12:22 AM CDTTornado WarningFFCDodge23 min
Apr 15, 12:31 AM CDTSevere Thunderstorm WarningFFCLaurens44 min
Apr 15, 12:41 AM CDTTornado WarningFFCLaurens34 min
Apr 15, 12:43 AM CDTTornado WarningFFCTelfair, Wheeler32 min
Apr 15, 12:50 AM CDTTornado WarningFFCTreutlen25 min
Apr 15, 12:58 AM CDTTornado WarningFFCMontgomery32 min
Apr 15, 1:00 AM CDTTornado WarningFFCJohnson35 min
Apr 15, 1:04 AM CDTTornado WarningFFCEmanuel41 min
Apr 15, 1:07 AM CDTSevere Thunderstorm WarningTAEFranklin38 min
Apr 15, 1:17 AM CDTTornado WarningFFCTreutlen28 min
Apr 15, 1:40 AM CDTTornado WarningFFCEmanuel35 min
Apr 15, 1:45 AM CDTSevere Thunderstorm WarningTAEFranklin45 min
Apr 15, 1:47 AM CDTTornado WarningCHSCandler43 min
Apr 15, 1:54 AM CDTTornado WarningCHSJenkins51 min
Apr 15, 2:03 AM CDTTornado WarningTAEFranklin27 min
Apr 15, 2:09 AM CDTSevere Thunderstorm WarningCHSBulloch23 min
Apr 15, 2:10 AM CDTSevere Thunderstorm WarningTAETurner, Worth35 min
Apr 15, 2:16 AM CDTSevere Thunderstorm WarningFFCCrisp29 min
Apr 15, 2:20 AM CDTSevere Thunderstorm WarningCHSScreven55 min
Apr 15, 2:22 AM CDTTornado WarningTAEWorth23 min
Apr 15, 2:23 AM CDTTornado WarningFFCCrisp37 min
Apr 15, 2:33 AM CDTTornado WarningFFCWilcox42 min
Apr 15, 2:38 AM CDTTornado WarningFFCBleckley25 min
Apr 15, 2:51 AM CDTSevere Thunderstorm WarningFFCDodge39 min
Apr 15, 3:25 AM CDTSevere Thunderstorm WarningFFCDodge, Laurens50 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

Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 3.8 hours before the alert went out and 148 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, Tallahassee Rgnl, FL at 00:00Z on 2007-04-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 791 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, Tallahassee Rgnl, FL at 00:00Z on 2007-04-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 222 square meters per square second.1939587897117Sfc1 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
791 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
504 m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
222 m²/s²
0-3 km storm-relative helicity
198 m²/s²
Significant tornado parameter
1.2
Supercell composite
5.0

Open this sounding in Storm Lab

The text

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

000
WWUS20 KWNS 150347
SEL4  
SPC WW 150347
ALZ000-FLZ000-GAZ000-151000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 144
NWS STORM PREDICTION CENTER NORMAN OK
1145 PM EDT SAT APR 14 2007

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

       SMALL PART OF SOUTHEAST ALABAMA
       PART OF FLORIDA PAN HANDLE
       LARGE PART OF SOUTHERN GEORGIA

EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 1145 PM
UNTIL 600 AM EDT.

TORNADOES...HAIL TO 2 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 60 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 15 MILES WEST SOUTHWEST OF
MARIANNA FLORIDA TO 65 MILES EAST NORTHEAST OF VIDALIA GEORGIA. 
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU4).

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 142. WATCH NUMBER 142 WILL NOT BE IN EFFECT AFTER
1145 PM EDT. CONTINUE...WW 143...

DISCUSSION...WHILE TORNADO THREAT HAS DIMINISHED FROM EARLIER THIS
EVENING...THE SHEAR REMAINS VERY STRONG ACROSS THE WATCH AREA.  WITH
A VERY MOIST AND MODESTLY UNSTABLE AIR MASS...POTENTIAL REMAINS FOR
DEVELOPMENT OF SUPERCELLS AND AT LEAST AN ISOLATED TORNADO THREAT AS
STORMS CONTINUE EWD FROM SERN AL/FL PANHANDLE INTO SRN GA WITH
APPROACH OF THE STRONG UPPER JET AND S/W  TROUGH.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 24035.


...HALES

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 14, 7:09 PM CDTMesoscale DiscussionSPCAutauga, Baldwin, Barbour, Bullock, Butler, Chambers and 28 more2 hr
Apr 15, 1:27 AM CDTMesoscale DiscussionSPCAlachua, Citrus, Dixie, Franklin, Gilchrist, Hernando and 4 more2 hr
Apr 15, 8:31 AM CDTMesoscale DiscussionSPCBrevard, Broward, Charlotte, Collier, DeSoto, Flagler and 22 more59 min
Apr 15, 8:45 AM CDTTornado WatchSPCBrevard, Broward, Charlotte, Collier, DeSoto, Glades and 18 more7 hr
Apr 15, 12:03 PM CDTMesoscale DiscussionSPCBroward, Collier, Glades, Hendry, Highlands, Indian River and 7 more117 min
Apr 15, 2:42 PM CDTMesoscale DiscussionSPCBroward, Miami-Dade, Monroe, Palm Beach93 min
Apr 14, 9:10 PM CDTMesoscale DiscussionSPCBurke, Columbia, Jenkins, Lincoln, Richmond, Screven95 min
Apr 15, 1:01 AM CDTTornado WatchSPCBurke7 hr
Apr 15, 2:57 AM CDTMesoscale DiscussionSPCAppling, Atkinson, Bacon, Ben Hill, Berrien, Bleckley and 39 more93 min
Apr 15, 4:57 AM CDTTornado WatchSPCAppling, Atkinson, Bacon, Bryan, Bulloch, Candler and 14 more5 hr
Apr 15, 9:20 AM CDTMesoscale DiscussionSPCChatham55 min
Apr 15, 2:33 AM CDTMesoscale DiscussionSPCChesterfield, Darlington, Fairfield, Kershaw, Lancaster, Lee and 3 more87 min
Apr 15, 6:39 AM CDTMesoscale DiscussionSPCBamberg, Berkeley, Calhoun, Charleston, Chesterfield, Clarendon and 13 more66 min
Apr 15, 7:08 AM CDTTornado WatchSPCAllendale, Bamberg, Barnwell, Beaufort, Berkeley, Calhoun and 17 more7 hr
Apr 15, 10:15 AM CDTMesoscale DiscussionSPCBerkeley, Charleston, Dillon, Dorchester, Florence, Georgetown and 3 more2 hr
Apr 15, 11:19 AM CDTMesoscale DiscussionSPCChester, Lancaster, York86 min

Nearby

Tornado Watches in Georgia, 2007Tornado Watches in Florida, 2007Tornado Watches in Alabama, 2007Every tornado 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.