Alert archive / Florida / Tornado Watches in 2004

Tornado Watch 923

December 22, 20048 counties in Alabama; 12 counties in Florida; Early County, Miller County, Seminole County, Georgia

The Storm Prediction Center issued this tornado watch at Dec 22, 2004, 7:05 PM CST for 8 counties in Alabama; 12 counties in Florida; Early County, Miller County, Seminole County, Georgia. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Dec 22, 2004, 7:05 PM CST (01:05 UTC)
Expired: Dec 23, 2004, 1:00 AM CST
In force: 6 hr
Issued by: the Storm Prediction Center

All 23 counties

Coffee County, AL, Conecuh County, AL, Covington County, AL, Dale County, AL, Escambia County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Bay County, FL, Calhoun County, FL, Escambia County, FL, Franklin County, FL, Gulf County, FL, Holmes County, FL, Jackson County, FL, Liberty County, FL, Okaloosa County, FL, Santa Rosa County, FL, Walton County, FL, Washington County, FL, Early County, GA, Miller County, GA, Seminole County, GA

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Dec 22, 7:50 PM CST	Severe Thunderstorm Warning	TAE	Bay, Walton, Washington	40 min
Dec 22, 9:59 PM CST	Tornado Warning	TAE	Bay, Walton	31 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, 1.1 hours before the alert went out and 150 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1309 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 148 m²/s²
0-3 km storm-relative helicity: 230 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 230107
SEL3  
SPC WW 230105
ALZ000-FLZ000-CWZ000-230700-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 923
NWS STORM PREDICTION CENTER NORMAN OK
705 PM CST WED DEC 22 2004

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

       SOUTHERN ALABAMA
       THE WESTERN AND CENTRAL FLORIDA PANHANDLE
       COASTAL WATERS

EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 705 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 ALONG AND 85 STATUTE MILES EAST AND WEST
OF A LINE FROM 45 MILES WEST NORTHWEST OF DOTHAN ALABAMA TO 45
MILES SOUTH SOUTHWEST OF PANAMA CITY FLORIDA.

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.

DISCUSSION...CHANCE FOR ISOLATED TORNADOES WILL EXIST THIS EVENING
OVER A SMALL PART OF THE CNTRL GULF CST REGION AS SHALLOW WARM FRONT
LIFTS NWD FROM THE NRN GULF.  AMPLE DEEP /60+ KTS/ AND LOW LEVEL
SHEAR /50 KTS/ EXPECTED FOR SUSTAINED LOW TO MID LEVEL STORM
ROTATION GIVEN CONTINUED ENE MOTION OF 80+ KT MID LEVEL SPEED MAX
OVER E TX.

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 25035.


...CORFIDI

313,0844 293,0843 293,0872 313,0873

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 22, 9:26 PM CST	Mesoscale Discussion	SPC	Coffee, Covington, Dale, Geneva, Henry, Houston	64 min
Dec 22, 11:46 PM CST	Mesoscale Discussion	SPC	Dale, Geneva, Henry, Houston	59 min
Dec 23, 2:35 AM CST	Mesoscale Discussion	SPC	Franklin, Gulf, Wakulla	115 min

Nearby

Tornado Watches in Florida, 2004 Tornado Watches in Alabama, 2004 Tornado Watches in Georgia, 2004 Every tornado watch in 2004

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.