Alert archive / Georgia / Tornado Watches in 2008

Tornado Watch 65

February 17, 200812 counties in Florida; 57 counties in Georgia

The Storm Prediction Center issued this tornado watch at Feb 17, 2008, 5:58 PM CST for 12 counties in Florida; 57 counties in Georgia. It was in force for 8 hr.

The area

The outline as issued.

The facts

Issued
Feb 17, 2008, 5:58 PM CST (23:58 UTC)
Expired
Feb 18, 2008, 2:00 AM CST
In force
8 hr
Issued by
the Storm Prediction Center
Largest hail expected
1 in
Strongest gust expected
60 kt
All 69 counties

Bay County, FL, 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, Taylor County, FL, Wakulla County, FL, Baker County, GA, Ben Hill County, GA, Berrien County, GA, Bleckley County, GA, Brooks County, GA, Burke County, GA, Calhoun County, GA, Clay County, GA, Colquitt County, GA, Columbia County, GA, Cook County, GA, Crisp County, GA, Decatur County, GA, Dodge County, GA, Dooly County, GA, Dougherty County, GA, Early County, GA, Emanuel County, GA, Glascock County, GA, Grady County, GA, Hancock County, GA, Houston County, GA, Irwin County, GA, Jefferson County, GA, Johnson County, GA, Lanier County, GA, Laurens County, GA, Lee County, GA, Lincoln County, GA, Lowndes County, GA, Macon County, GA, McDuffie County, GA, Miller County, GA, Mitchell County, GA, Montgomery County, GA, Peach County, GA, Pulaski County, GA, Quitman County, GA, Randolph County, GA, Richmond County, GA, Seminole County, GA, Taliaferro County, GA, Telfair County, GA, Terrell County, GA, Thomas County, GA, Tift County, GA, Toombs County, GA, Treutlen County, GA, Turner County, GA, Twiggs County, GA, Warren County, GA, Washington County, GA, Wheeler County, GA, Wilcox County, GA, Wilkes County, GA, Wilkinson County, GA, Worth County, GA

The radar

The Robins AFB radar (KJGX), 71 km from the middle of the area, began a volume at 00:01 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
10%
Ten or more severe wind reports
50%
One or more gusts of 65 knots or more
20%
Ten or more severe hail reports
20%
One or more hailstones of 2 inches or more
10%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Feb 17, 6:05 PM CSTSevere Thunderstorm WarningTAEJackson, Washington40 min
Feb 17, 6:32 PM CSTTornado WarningTAEClay43 min
Feb 17, 6:48 PM CSTSevere Thunderstorm WarningTAEBay57 min
Feb 17, 8:06 PM CSTSevere Thunderstorm WarningTAEDecatur, Grady39 min
Feb 17, 9:03 PM CSTSevere Thunderstorm WarningTAEBay, Calhoun42 min
Feb 17, 9:33 PM CSTSevere Thunderstorm WarningTAEGadsden57 min
Feb 18, 12:06 AM CSTTornado WarningTAEGadsden39 min
Feb 18, 12:06 AM CSTTornado WarningTAEDecatur39 min
Feb 18, 12:33 AM CSTTornado WarningTAEGrady42 min
Feb 18, 12:46 AM CSTSevere Thunderstorm WarningTAEGulf44 min
Feb 18, 1:01 AM CSTTornado WarningTAEColquitt, Grady, Mitchell, Thomas44 min
Feb 18, 1:37 AM CSTTornado WarningTAEColquitt, Tift, Worth38 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 12.0 hours before the alert went out and 184 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, Peachtre/Fal Fld, GA at 12:00Z on 2008-02-17Temperature 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, Peachtre/Fal Fld, GA at 12:00Z on 2008-02-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 320 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
1892 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
320 m²/s²
0-3 km storm-relative helicity
438 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.

000
WWUS20 KWNS 172359
SEL5  
SPC WW 172359
FLZ000-GAZ000-CWZ000-180600-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 65
NWS STORM PREDICTION CENTER NORMAN OK
655 PM EST SUN FEB 17 2008

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

       THE FLORIDA PANHANDLE
       SOUTHERN AND EASTERN GEORGIA
       COASTAL WATERS

EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 655 PM UNTIL
100 AM EST.

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 45 STATUTE
MILES EAST AND WEST OF A LINE FROM 40 MILES WEST NORTHWEST OF
AUGUSTA GEORGIA TO 50 MILES SOUTH SOUTHEAST OF TALLAHASSEE
FLORIDA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).

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 63...WW 64...

DISCUSSION...LONG TRACK SUPERCELL IS CONTINUING TO MOVE ENEWD ACROSS
CENTRAL GA...WHILE BOW ECHO SYSTEM IS MOVING RAPID ENEWD AT 50 KT
TOWARD CENTRAL GA.  FARTHER SOUTH...INTENSIFYING STORMS ARE NOTED
OFF THE NWRN FL COAST MOVING NEWD 35-40 KT.  SEVERE THREAT IS
EXPECTED TO SPREAD EWD AND NEWD THIS EVENING WITHIN ENVIRONMENT
WHERE STRONG WINDS VEER AND INCREASE WITH HEIGHT...PROVIDING
FAVORABLE VERTICAL SHEAR TO SUPPORT CONTINUED SUPERCELLS AND BOW
ECHOES.  STRONGER CELLS WILL BE CAPABLE OF PRODUCING DAMAGING WINDS
GUSTS AND ISOLATED TORNADOES.

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 450.
MEAN STORM MOTION VECTOR 24040.


...WEISS

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 17, 5:05 AM CSTMesoscale DiscussionSPCEscambia, Santa Rosa55 min
Feb 17, 5:26 AM CSTTornado WatchSPCEscambia, Okaloosa, Santa Rosa7 hr
Feb 17, 7:13 AM CSTMesoscale DiscussionSPCEscambia, Okaloosa, Santa Rosa62 min
Feb 17, 9:43 AM CSTMesoscale DiscussionSPCEscambia, Okaloosa, Santa Rosa62 min
Feb 17, 12:14 PM CSTMesoscale DiscussionSPCBay, Calhoun, Franklin, Gadsden, Gulf, Holmes and 7 more91 min
Feb 17, 12:32 PM CSTTornado WatchSPCBay, Calhoun, Escambia, Franklin, Gadsden, Gulf and 7 more7 hr
Feb 17, 2:45 PM CSTMesoscale DiscussionSPCBay, Calhoun, Escambia, Franklin, Gadsden, Gulf and 9 more90 min
Feb 17, 5:19 PM CSTMesoscale DiscussionSPCBay, Calhoun, Franklin, Gadsden, Gulf, Hamilton and 11 more86 min
Feb 17, 3:01 PM CSTTornado WatchSPCBaldwin, Banks, Barrow, Bartow, Bibb, Butts and 29 more5 hr

Nearby

Tornado Watches in Georgia, 2008Tornado Watches in Florida, 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.