Alert archive / Georgia / Tornado Watches in 2005

Tornado Watch 893

December 5, 20056 counties in Florida; 16 counties in Georgia

The Storm Prediction Center issued this tornado watch at Dec 5, 2005, 12:50 PM EST for 6 counties in Florida; 16 counties in Georgia. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Dec 5, 2005, 12:50 PM EST (17:50 UTC)
Expired: Dec 5, 2005, 7:00 PM EST
In force: 6 hr
Issued by: the Storm Prediction Center

All 22 counties

Baker County, FL, Columbia County, FL, Gilchrist County, FL, Hamilton County, FL, Suwannee County, FL, Union County, FL, Appling County, GA, Atkinson County, GA, Bacon County, GA, Charlton County, GA, Clinch County, GA, Coffee County, GA, Crisp County, GA, Echols County, GA, Jeff Davis County, GA, Montgomery County, GA, Pierce County, GA, Telfair County, GA, Toombs County, GA, Ware County, GA, Wheeler County, GA, Wilcox 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 5, 2:57 PM EST	Tornado Warning	JAX	Clinch	48 min
Dec 5, 3:33 PM EST	Tornado Warning	JAX	Ware	42 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 12:00Z, 5.8 hours before the alert went out and 91 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: 184 J/kg
Mixed-layer CIN: -39 J/kg
Mixed-layer LCL: 697 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 205 m²/s²
0-3 km storm-relative helicity: 214 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

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

000 
WWUS20 KWNS 051750
SEL3  
SPC WW 051750
FLZ000-GAZ000-CWZ000-060000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 893
NWS STORM PREDICTION CENTER NORMAN OK
1250 PM EST MON DEC 5 2005

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

       NORTHERN FLORIDA
       SOUTHERN GEORGIA
       COASTAL WATERS

EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 1250 PM UNTIL 700
PM EST.

TORNADOES...HAIL TO 1.5 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 70 STATUTE MILES
EAST AND WEST OF A LINE FROM 65 MILES NORTHWEST OF WAYCROSS
GEORGIA TO 40 MILES WEST OF CROSS CITY FLORIDA.  FOR A COMPLETE
DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE
(WOUS64 KWNS WOU3).

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...THUNDERSTORMS ARE INTENSIFYING AHEAD OF COLD FRONT FROM
SWRN GA INTO WRN FL PANHANDLE. WITH 25-30KT OF SFC-1KM SHEAR AND
HELICITIES FROM 200-300 M2/S2 ALONG WITH MUCAPES TO 1000
J/KG...CONDITIONS FAVORABLE FOR BOTH SUPERCELLS AND LINE SEGMENTS. 
ALONG WITH DAMAGING WIND POTENTIAL FROM BOTH...ISOLATED TORNADOES
COULD OCCUR WITH SUPERCELLS.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
450. MEAN STORM MOTION VECTOR 24030.


...HALES

315,0815 293,0823 293,0845 315,0842

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 5, 3:39 AM EST	Mesoscale Discussion	SPC	Holmes, Jackson, Walton, Washington	66 min
Dec 5, 12:28 PM EST	Mesoscale Discussion	SPC	Bay, Calhoun, Franklin, Gadsden, Gulf, Jackson and 6 more	32 min
Dec 5, 3:39 PM EST	Mesoscale Discussion	SPC	Alachua, Baker, Bradford, Columbia, Dixie, Franklin and 10 more	96 min
Dec 5, 4:57 PM EST	Mesoscale Discussion	SPC	Baker, Columbia, Dixie, Gilchrist, Lafayette, Suwannee and 1 more	63 min
Dec 5, 6:16 PM EST	Mesoscale Discussion	SPC	Citrus, Hernando, Levy, Pasco	119 min
Dec 4, 11:43 PM EST	Mesoscale Discussion	SPC	Baldwin, Bibb, Bleckley, Chattahoochee, Crawford, Dooly and 18 more	2 hr

Nearby

Tornado Watches in Georgia, 2005 Tornado Watches in Florida, 2005 Every tornado watch in 2005

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.