Alert archive / Georgia / Tornado Watches in 2001

Tornado Watch 399

June 11, 20015 counties in Alabama; 17 counties in Florida; 19 counties in Georgia

The Storm Prediction Center issued this tornado watch at Jun 11, 2001, 6:15 PM CDT for 5 counties in Alabama; 17 counties in Florida; 19 counties in Georgia. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jun 11, 2001, 6:15 PM CDT (23:15 UTC)
Expired
Jun 11, 2001, 11:00 PM CDT
In force
5 hr
Issued by
the Storm Prediction Center
All 41 counties

Coffee County, AL, Dale County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Bay County, FL, Calhoun County, FL, Columbia County, FL, Gadsden County, FL, Hamilton County, FL, Holmes County, FL, Jackson County, FL, Jefferson County, FL, Lafayette County, FL, Leon County, FL, Liberty County, FL, Madison County, FL, Suwannee County, FL, Taylor County, FL, Wakulla County, FL, Walton County, FL, Washington County, FL, Atkinson County, GA, Baker County, GA, Berrien County, GA, Brooks County, GA, Calhoun County, GA, Clay County, GA, Clinch County, GA, Colquitt County, GA, Cook County, GA, Decatur County, GA, Early County, GA, Echols County, GA, Grady County, GA, Lanier County, GA, Lowndes County, GA, Miller County, GA, Mitchell County, GA, Seminole County, GA, Thomas County, GA

The radar

The Tallahassee radar (KTLH), 77 km from the middle of the area, began a volume at 23:16 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.

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Jun 11, 6:34 PM CDTTornado WarningTAEMadison26 min
Jun 11, 7:03 PM CDTTornado WarningTAEMadison27 min
Jun 11, 7:13 PM CDTTornado WarningJAXClinch32 min
Jun 11, 7:19 PM CDTTornado WarningTAEJefferson, Madison26 min
Jun 11, 7:41 PM CDTTornado WarningTAEMadison34 min
Jun 11, 7:47 PM CDTTornado WarningJAXAtkinson, Clinch43 min
Jun 11, 8:13 PM CDTTornado WarningTAEMadison62 min
Jun 11, 8:50 PM CDTTornado WarningTAELeon, Wakulla40 min
Jun 11, 8:58 PM CDTTornado WarningTAELowndes32 min
Jun 11, 9:13 PM CDTTornado WarningTAEMadison32 min
Jun 11, 9:27 PM CDTTornado WarningTAELeon48 min
Jun 11, 9:48 PM CDTFlash Flood WarningTAELeon4 hr
Jun 11, 9:57 PM CDTFlash Flood WarningTAELeon5 hr
Jun 11, 10:01 PM CDTTornado WarningTAEJefferson, Leon29 min
Jun 11, 10:07 PM CDTTornado WarningJAXColumbia, Hamilton38 min
Jun 11, 10:22 PM CDTTornado WarningJAXEchols38 min

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 11.3 hours before the alert went out and 268 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 2001-06-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 533 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, Peachtre/Fal Fld, GA at 12:00Z on 2001-06-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -21 square meters per square second.193958Sfc1 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
533 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
607 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
-21 m²/s²
0-3 km storm-relative helicity
1 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 
WWUS9 KMKC 112306
SEL9  

SEL9  
MKC WW 112302
ALZ000-FLZ000-GAZ000-120400-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 399
STORM PREDICTION CENTER NORMAN OK
702 PM EDT MON JUN 11 2001

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

   SOUTHEAST ALABAMA                            
   FLORIDA PANHANDLE                            
   SOUTHERN GEORGIA                            

EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 715 PM UNTIL
MIDNIGHT EDT.

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 55 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 55 MILES WEST SOUTHWEST OF DOTHAN ALABAMA TO
50 MILES EAST SOUTHEAST OF VALDOSTA 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.

OTHER WATCH INFORMATION...  CONTINUE...WW 396...WW 397...WW 398...

DISCUSSION...CONDITIONS REMAIN FAVORABLE FOR SMALL TORNADIC
SUPERCELLS AHEAD OF CIRCULATION CENTER OVER SWRN AL.  SHEAR
PROFILES AND TROPICAL AIRMASS WILL CONTINUE THE THREAT OF ISOLATED
TORNADOES SEVERAL MORE HOURS.


AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAITL
SURFACE AND ALOFT TO 1 INCH...EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. 
MEAN STORM MOTION VECTOR 19030.


...HALES

;314,0861 311,0823 294,0823 301,0861;

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 11, 7:45 AM CDTTornado WatchSPCBaldwin, Conecuh, Escambia, Mobile, Monroe, Washington5 hr
Jun 11, 12:45 PM CDTTornado WatchSPCBarbour, Coffee, Covington, Crenshaw, Dale, Geneva and 3 more4 hr

Nearby

Tornado Watches in Georgia, 2001Tornado Watches in Florida, 2001Tornado Watches in Alabama, 2001Every tornado watch in 2001

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.