Alert archive / Georgia / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 91

March 11, 200015 counties in Alabama; 15 counties in Florida; 33 counties in Georgia

The Storm Prediction Center issued this severe thunderstorm watch at Mar 11, 2000, 11:15 AM CST for 15 counties in Alabama; 15 counties in Florida; 33 counties in Georgia. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Mar 11, 2000, 11:15 AM CST (17:15 UTC)
Expired: Mar 11, 2000, 4:00 PM CST
In force: 5 hr
Issued by: the Storm Prediction Center

All 63 counties

Barbour County, AL, Bullock County, AL, Butler County, AL, Coffee County, AL, Covington County, AL, Crenshaw County, AL, Dale County, AL, Geneva County, AL, Henry County, AL, Houston County, AL, Lowndes County, AL, Macon County, AL, Montgomery County, AL, Pike County, AL, Russell County, AL, Bay County, FL, Calhoun County, FL, Gadsden County, FL, Gulf County, FL, Holmes County, FL, Jackson County, FL, Jefferson County, FL, Leon County, FL, Liberty County, FL, Madison County, FL, Okaloosa County, FL, Taylor County, FL, Wakulla County, FL, Walton County, FL, Washington County, FL, Baker County, GA, Bleckley County, GA, Brooks County, GA, Calhoun County, GA, Chattahoochee County, GA, Clay County, GA, Colquitt County, GA, Cook County, GA, Crisp County, GA, Decatur County, GA, Dooly County, GA, Dougherty County, GA, Early County, GA, Grady County, GA, Lee County, GA, Macon County, GA, Marion County, GA, Miller County, GA, Mitchell County, GA, Pulaski County, GA, Quitman County, GA, Randolph County, GA, Schley County, GA, Seminole County, GA, Stewart County, GA, Sumter County, GA, Terrell County, GA, Thomas County, GA, Tift County, GA, Turner County, GA, Webster County, GA, Wilcox County, GA, Worth County, GA

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Mar 11, 11:22 AM CST	Severe Thunderstorm Warning	FFC	Sumter	38 min
Mar 11, 12:38 PM CST	Severe Thunderstorm Warning	TAE	Decatur, Seminole	37 min
Mar 11, 1:14 PM CST	Severe Thunderstorm Warning	TAE	Decatur, Grady, Mitchell	46 min
Mar 11, 1:47 PM CST	Severe Thunderstorm Warning	TAE	Houston	43 min
Mar 11, 1:53 PM CST	Severe Thunderstorm Warning	TAE	Holmes, Jackson	47 min
Mar 11, 3:48 PM CST	Severe Thunderstorm Warning	TAE	Jackson	32 min
Mar 11, 3:57 PM CST	Severe Thunderstorm Warning	TAE	Decatur, Seminole	38 min

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 5.3 hours before the alert went out and 148 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: 362 J/kg
Mixed-layer CIN: -59 J/kg
Mixed-layer LCL: 790 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 22 m²/s²
0-3 km storm-relative helicity: 68 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

318 
WWUS9 KMKC 111647
SEL1  

SEL1  
MKC WW 111647
ALZ000-FLZ000-GAZ000-CWZ000-112200-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 91
STORM PREDICTION CENTER NORMAN OK
1147 AM EST SAT MAR 11 2000

THE STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

   SOUTHEAST ALABAMA                            
   FLORIDA PANHANDLE                           
   SOUTHWEST GEORGIA                            
   COASTAL WATERS                     

EFFECTIVE THIS SATURDAY AFTERNOON FROM 1215 PM UNTIL 500 PM EST.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 95 STATUTE MILES
NORTH AND SOUTH OF A LINE FROM 25 MILES NORTHWEST OF CRESTVIEW
FLORIDA TO 30 MILES EAST OF MOULTRIE GEORGIA.

REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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 90...

DISCUSSION...LINE OF THUNDERSTORMS IS ORGANIZING OVER SERN AL AND
IS EXPECTED TO MOVE ALONG OUTFLOW BOUNDARY FROM MCS IN GA. DAMAGING
WINDS ARE LIKELY...GIVEN STRONG INSTABILITY AND MODERATE FLOW
ALOFT.


AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.  MEAN STORM
MOTION VECTOR 24035.


...VESCIO

294,0831 293,0864 322,0864 322,0831

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 10, 7:45 PM CST	Tornado Watch	SPC	Autauga, Barbour, Bullock, Butler, Chambers, Clay and 19 more	5 hr
Mar 11, 10:00 AM CST	Severe Thunderstorm Watch	SPC	Baldwin, Bibb, Bleckley, Burke, Butts, Clarke and 44 more	5 hr

Nearby

Severe Thunderstorm Watches in Georgia, 2000 Severe Thunderstorm Watches in Alabama, 2000 Severe Thunderstorm Watches in Florida, 2000 Every severe thunderstorm watch in 2000

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.