Alert archive / Georgia / Tornado Watches in 2002

Tornado Watch 24

March 12, 200212 counties in Florida; 22 counties in Georgia

The Storm Prediction Center issued this tornado watch at Mar 12, 2002, 5:30 PM EST for 12 counties in Florida; 22 counties in Georgia. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Mar 12, 2002, 5:30 PM EST (22:30 UTC)
Expired
Mar 12, 2002, 11:00 PM EST
In force
6 hr
Issued by
the Storm Prediction Center
All 34 counties

Baker County, FL, Bradford County, FL, Columbia County, FL, Gilchrist County, FL, Hamilton County, FL, Jefferson County, FL, Lafayette County, FL, Madison County, FL, Nassau County, FL, Suwannee County, FL, Taylor County, FL, Union County, FL, Appling County, GA, Atkinson County, GA, Bacon County, GA, Ben Hill County, GA, Berrien County, GA, Brantley County, GA, Brooks County, GA, Camden County, GA, Charlton County, GA, Clinch County, GA, Coffee County, GA, Cook County, GA, Echols County, GA, Glynn County, GA, Irwin County, GA, Lanier County, GA, Long County, GA, Lowndes County, GA, McIntosh County, GA, Pierce County, GA, Ware County, GA, Wayne County, GA

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Mar 12, 6:36 PM ESTSevere Thunderstorm WarningTAEBrooks54 min
Mar 12, 6:42 PM ESTSevere Thunderstorm WarningTAETaylor48 min
Mar 12, 6:50 PM ESTSevere Thunderstorm WarningTAEMadison55 min
Mar 12, 6:55 PM ESTSevere Thunderstorm WarningTAELowndes14 days
Mar 12, 7:14 PM ESTSevere Thunderstorm WarningTAELafayette14 days

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 10.5 hours before the alert went out and 116 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 12:00Z on 2002-03-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 35 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tallahassee Rgnl, FL at 12:00Z on 2002-03-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 293 square meters per square second.1939587897Sfc1 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
35 J/kg
Mixed-layer CIN
-138 J/kg
Mixed-layer LCL
507 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
293 m²/s²
0-3 km storm-relative helicity
316 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

000 
WWUS20 KWNS 122222
SEL4  
SPC WW 122217
FLZ000-GAZ000-CWZ000-130400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 24
STORM PREDICTION CENTER NORMAN OK
517 PM EST TUE MAR 12 2002

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

   NORTHERN FLORIDA                            
   SOUTHERN GEORGIA                            
   COASTAL WATERS                     

EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 530 PM UNTIL 1100
PM 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 ALONG AND 70 STATUTE MILES EAST AND WEST
OF A LINE FROM 65 MILES WEST OF GAINESVILLE FLORIDA TO 40 MILES
NORTH NORTHEAST OF WAYCROSS GEORGIA.

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...STRONG LINE OF THUNDERSTORMS WILL CONTINUE EWD AHEAD
OF IMPRESSIVE UPPER LOW NOW OVER THE CENTRAL GULF COAST.  VERY
STRONG DEEP LAYER SHEAR WILL BE SUPPORTIVE OF SUPERCELLS AND A FEW
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 26035.


...EVANS

314,0805 294,0821 294,0843 314,0831

WWUS20 KWNS 122222
SEL4  
SPC WW 122217
FLZ000-GAZ000-CWZ000-130400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 24
STORM PREDICTION CENTER NORMAN OK
517 PM EST TUE MAR 12 2002

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

   NORTHERN FLORIDA                            
   SOUTHERN GEORGIA                            
   COASTAL WATERS                     

EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 530 PM UNTIL 1100
PM 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 ALONG AND 70 STATUTE MILES EAST AND WEST
OF A LINE FROM 65 MILES WEST OF GAINESVILLE FLORIDA TO 40 MILES
NORTH NORTHEAST OF WAYCROSS GEORGIA.

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...STRONG LINE OF THUNDERSTORMS WILL CONTINUE EWD AHEAD
OF IMPRESSIVE UPPER LOW NOW OVER THE CENTRAL GULF COAST.  VERY
STRONG DEEP LAYER SHEAR WILL BE SUPPORTIVE OF SUPERCELLS AND A FEW
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 26035.


...EVANS

314,0805 294,0821 294,0843 314,0831

Nearby

Tornado Watches in Georgia, 2002Tornado Watches in Florida, 2002Every tornado watch in 2002

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.