Alert archive / Georgia / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 48, NWS Tallahassee, FL

April 30, 2002Calhoun County, Clay County, Early County, Georgia; Henry County, Alabama

NWS Tallahassee, FL issued this severe thunderstorm warning at Apr 30, 2002, 6:58 PM EDT for Calhoun County, Clay County, Early County, Georgia; Henry County, Alabama. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Apr 30, 2002, 6:58 PM EDT (22:58 UTC)
Expired: Apr 30, 2002, 7:45 PM EDT
In force: 47 min
Issued by: NWS Tallahassee, FL
Area: Counties, with a storm outline in the text

Counties Henry County, AL, Calhoun County, GA, Clay County, GA, Early County, GA

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 30, 6:30 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 11.0 hours before the alert went out and 136 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: 883 J/kg
Mixed-layer CIN: -84 J/kg
Mixed-layer LCL: 560 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 46 m²/s²
0-3 km storm-relative helicity: 79 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

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

000 
WUUS52 KTAE 302312 CCA
SVRTLH
GAC037-061-099-302345-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING...COR TO COUNTIES WARNED
NATIONAL WEATHER SERVICE TALLAHASSEE FL
658 PM EDT TUE APR 30 2002

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CLAY COUNTY IN GEORGIA
  EARLY COUNTY IN GEORGIA

* UNTIL 745 PM EDT(645 PM CDT)...

* AT 658 PM EDT(558 PM CDT) NATIONAL WEATHER SERVICE DOPPLER RADAR
  INDICATED A SEVERE THUNDERSTORM WITH LARGE HAIL 5 MILES SOUTH OF
  FORT GAINES...MOVING SOUTHEAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  COLOMOKEE...BLUFFTON BY 710 PM EDT...
  EARLY CO AIRPORT BY 715 PM EDT...
  PARKSVILLE...TURMAN BY 720 PM EDT...
  ARLINGTON BY 725 PM EDT...

IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY BUILDING
AWAY FROM WINDOWS. REMEMBER...A SEVERE THUNDERSTORM CAN PRODUCE LARGE
DAMAGING HAIL...DAMAGING WINDS IN EXCESS OF 60 MPH...DEADLY
LIGHTNING...AND VERY HEAVY RAIN.

THE MAIN THREAT FROM THIS STORM IS LARGE HAIL.

LAT...LON 3165 8505 3150 8515 3126 8472 3147 8462

.END

22-BARRY

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tallahassee, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 30, 3:00 PM EDT, 3 hours 58 minutes earlier.

Area forecast discussion, Apr 30, 3:00 PM EDT, 3 hours 58 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TALLAHASSEE FL
300 PM EDT TUE APR 30 2002

CURRENTLY: PARTLY CLOUDY SKIES WITH MANY SITES REPORTING 5-7 MILES
IN HAZE. OUTFLOW BOUNDARY PUSHING INTO NRN FLA FROM ADJ GEORGIA.

DISCUSSION:AT UPPER LEVELS...UPPER TROF MOVING OFF ERN CANADA...
UPPER LOW MOVING ENE FROM CNTRL CALIF..EWD TOWARDS GREAT BASIN AND
THEN NE TOWARDS GREAT LAKES. HIGH MOVED OFF OLD MEX TOWARDS GULF WITH
PERSISTENT AND FAST WNW FLOW ACROSS THE SE CONUS. SEVERAL VORTS
ROLLING AROUND THE RIDGE AND ACROSS MAINLY NRN SXNS OF CWFA NEXT FEW
DAYS. AT SURFACE...NEARLY STATIONARY FRONT FROM AROUND FERNANDINA
BEACH W THRU NCNTRL ALA. LATEST GUIDANCE LESS BULLISH ON SEVERE OR
EVEN STRONG STORMS THIS EVENING OR TONIGHT. STILL...RADAR SHOWS
CONVECTION JUST N AND W OF CWFA. QUESTION IS HOW FAR S CONVECTION
WILL DRIFT. LAPS GUIDANCE STILL SHOWS UNSTABLE LIFTED INDICES AND
CAPE SOUTH OF BOUNDARY IN WARM SECTOR AND SELS HOLDING ON TO SLIGHT
RISK FOR ALL OUR CWFA. WITH LATE DEVELOPING SEA BREEZES AND ANY
OUTFLOW BOUNDARIES THAT KEEP TOGETHER WILL KEEP SCT EVENING
SHWRS/TSTMS N HALF AND WDLY SCT CONVECTION S HALF.

FORECAST:WILL USE 4 ZONE ZFP WITH THIS EVENING AND TONIGHT
SUBDIVIDED TO ACCOUNT FOR ABOVE CONVECTION.

AS SURFACE LOW NE OKLAH MOVES EWD...FRONT WILL DRIFT NWD TO
MISS-TENN VALLEY OVERNIGHT AND UPPER HIGH BUILDS EWD INTO NE GULF SO
NEXT FEW DAYS LOOK WARM AND DRY. AGAIN...APRIL 2002 WILL GO DOWN AS
THE WARMEST ON RECORD FOR TALLAHASSEE.

WITH SW FLOW PERSISTING...UNSEASONABLY WARM TEMPS AND A DRY AIRMASS
CONT WITH NEAR RECORD TEMPS NEXT FEW DAYS. MODELS IN VERY GOOD
AGREEMENT AND WILL BLEND.

RECORD HIGHS FOR WEDNESDAY

TLH 95 1990
ABY 94 1990
DHN 92 1990
AQQ 89 1943
PFN 92 1959

EXTENDED:ABOVE MENTIONED CALIFORNIA LOW WILL HELP DRAG NEXT COLD
FRONT SEWD..NOW ACROSS PLAINS STATES...AND WILL APPROACH SE ALA
PREDAWN HOURS OF FRIDAY AND MOVE ACROSS REST OF CWFA ON FRIDAY B4
STALLING AND DISSIPATING ACROSS MARINE AREA FRI NIGHT INTO SATURDAY.
THUS SCT POPS FOR FRIDAY. THIS WILL USHER IN COOLER TEMPS FRI INTO
WEEKEND.

MARINE:ONE ZONE FITS ALL WITH LIGHT SW FLOW AND SEAS AOB 2 FEET NEXT
FEW DAYS B4 SLOWLY INCREASING AHEAD OF THE NEXT BOUNDARY.

FIRE WX:FIRE WX WATCH REMAINS IN EFFECT FOR WED AFTN DUE TO HIGH
DISPERSION.

PRELIM NUMBERS:

TLH 067/093 068/093 2-0-
PFN 072/085 074/086 2-0-
DHN 069/091 070/092 3-0-
ABY 068/091 069/092 4-0-
VLD 067/093 067/092 3-0-

.AL...NONE.
.GA...NONE.
.FL...FIRE WX WATCH WED AFTN FOR HIGH DISPERSION.

BLOCK

The office that day

Everything else NWS Tallahassee, FL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 30, 5:57 PM EDT	Severe Thunderstorm Warning	TAE	Randolph	33 min
Apr 30, 6:22 PM EDT	Severe Thunderstorm Warning	TAE	Calhoun	83 min
Apr 30, 6:54 PM EDT	Severe Thunderstorm Warning	TAE	Baker, Dougherty	51 min
Apr 30, 7:00 PM EDT	Severe Thunderstorm Warning	TAE	Calhoun, Clay, Early	45 min
Apr 30, 7:01 PM EDT	Severe Thunderstorm Warning	TAE	Calhoun	74 min
Apr 30, 7:01 PM EDT	Severe Thunderstorm Warning	TAE	Clay, Early	3 hr
Apr 30, 7:12 PM EDT	Severe Thunderstorm Warning	TAE	Calhoun, Clay, Early	11 days
Apr 30, 7:41 PM EDT	Severe Thunderstorm Warning	TAE	Colquitt	13 days
Apr 30, 6:10 PM EDT	Severe Thunderstorm Warning	TAE	Henry	50 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2002 Severe Thunderstorm Warnings in Alabama, 2002 Every severe thunderstorm warning 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.