Alert archive / Georgia / Severe Thunderstorm Watches in 2000

Severe Thunderstorm Watch 90

March 11, 200050 counties in Georgia; 15 counties in South Carolina

The Storm Prediction Center issued this severe thunderstorm watch at Mar 11, 2000, 11:00 AM EST for 50 counties in Georgia; 15 counties in South Carolina. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Mar 11, 2000, 11:00 AM EST (16:00 UTC)
Expired
Mar 11, 2000, 4:00 PM EST
In force
5 hr
Issued by
the Storm Prediction Center
All 65 counties

Baldwin County, GA, Bibb County, GA, Bleckley County, GA, Burke County, GA, Butts County, GA, Clarke County, GA, Columbia County, GA, Crawford County, GA, Crisp County, GA, Dodge County, GA, Dooly County, GA, Elbert County, GA, Emanuel County, GA, Glascock County, GA, Greene County, GA, Hancock County, GA, Henry County, GA, Houston County, GA, Jasper County, GA, Jefferson County, GA, Jenkins County, GA, Johnson County, GA, Jones County, GA, Lamar County, GA, Laurens County, GA, Lee County, GA, Lincoln County, GA, Macon County, GA, McDuffie County, GA, Monroe County, GA, Morgan County, GA, Newton County, GA, Oconee County, GA, Oglethorpe County, GA, Peach County, GA, Pulaski County, GA, Putnam County, GA, Richmond County, GA, Rockdale County, GA, Screven County, GA, Sumter County, GA, Taliaferro County, GA, Taylor County, GA, Treutlen County, GA, Twiggs County, GA, Walton County, GA, Warren County, GA, Washington County, GA, Wilkes County, GA, Wilkinson County, GA, Abbeville County, SC, Aiken County, SC, Allendale County, SC, Bamberg County, SC, Barnwell County, SC, Chester County, SC, Edgefield County, SC, Fairfield County, SC, Greenwood County, SC, Laurens County, SC, Lexington County, SC, McCormick County, SC, Newberry County, SC, Richland County, SC, Saluda County, SC

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Mar 11, 11:26 AM ESTSevere Thunderstorm WarningFFCCrawford34 min
Mar 11, 11:31 AM ESTSevere Thunderstorm WarningFFCSumter29 min
Mar 11, 11:55 AM ESTSevere Thunderstorm WarningFFCBibb, Crawford35 min
Mar 11, 12:03 PM ESTSevere Thunderstorm WarningFFCJones27 min
Mar 11, 12:22 PM ESTSevere Thunderstorm WarningFFCSumter38 min
Mar 11, 12:50 PM ESTSevere Thunderstorm WarningFFCGlascock, Washington40 min
Mar 11, 12:50 PM ESTSevere Thunderstorm WarningFFCWarren40 min
Mar 11, 1:28 PM ESTSevere Thunderstorm WarningFFCHouston32 min
Mar 11, 1:42 PM ESTTornado WarningFFCHouston, Twiggs33 min
Mar 11, 2:08 PM ESTTornado WarningFFCTwiggs, Wilkinson37 min

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 4.0 hours before the alert went out and 149 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 2000-03-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 22 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 2000-03-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 81 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
22 J/kg
Mixed-layer CIN
-189 J/kg
Mixed-layer LCL
1274 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
81 m²/s²
0-3 km storm-relative helicity
168 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 111530
MKC WW 111530
GAZ000-SCZ000-112100-

URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 90
STORM PREDICTION CENTER NORMAN OK
1030 AM EST SAT MAR 11 2000

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

   CENTRAL AND EASTERN GEORGIA                            
   WESTERN AND CENTRAL SOUTH CAROLINA                     

EFFECTIVE THIS SATURDAY MORNING AND AFTERNOON FROM 1100 AM UNTIL
400 PM EST.

HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 70 STATUTE MILES
NORTH AND SOUTH OF A LINE FROM 35 MILES WEST OF MACON GEORGIA TO 15
MILES EAST OF COLUMBIA SOUTH CAROLINA.

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.


DISCUSSION...BOW ECHO HAS ORGANIZED OVER W-CNTRL GA. WITH AIR MASS
DESTABILIZING DOWNSTREAM...POTENTIAL FOR DAMAGING WINDS EXISTS
GIVEN MODERATE UNIDIRECTIONAL FLOW ALOFT.


AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES.  EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
KNOTS.  A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.  MEAN STORM
MOTION VECTjOR 24040.


...VESCIO

;334,0841 345,0805 325,0805 314,0841;

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 10, 8:45 PM ESTTornado WatchSPCBanks, Barrow, Bartow, Carroll, Cherokee, Clayton and 36 more5 hr
Mar 11, 12:15 PM ESTSevere Thunderstorm WatchSPCBaker, Bleckley, Brooks, Calhoun, Chattahoochee, Clay and 27 more5 hr

Nearby

Severe Thunderstorm Watches in Georgia, 2000Severe Thunderstorm Watches in South Carolina, 2000Every 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.