Alert archive / Georgia / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 21, NWS Tallahassee, FL

March 11, 2000Decatur County, Seminole County, Georgia

NWS Tallahassee, FL issued this severe thunderstorm warning at Mar 11, 2000, 1:38 PM EST for Decatur County, Seminole County, Georgia. It was in force for 37 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Mar 11, 2000, 1:38 PM EST (18:38 UTC)
Expired: Mar 11, 2000, 2:15 PM EST
In force: 37 min
Issued by: NWS Tallahassee, FL
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Decatur County, GA, Seminole County, GA

The radar

The Tallahassee radar (KTLH), 70 km from the middle of the area, began a volume at 18:37 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.

The watch it was issued in

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

Issued	Product	Office	Lasted
Mar 11, 12:15 PM EST	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 6.6 hours before the alert went out and 71 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.

000 
WUUS52 KTAE 111839
SVRTLH
GAC087-253-111915-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
138 PM EST SAT MAR 11 2000

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  DECATUR COUNTY IN GEORGIA
  CENTRAL SEMINOLE COUNTY IN GEORGIA

* UNTIL 215 PM EST

* AT 138 PM EST NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH DAMAGING WINDS 3 MILES NORTHWEST OF
  DESSER...OR ABOUT 8 MILES SOUTH OF DONALSONVILLE...MOVING EAST AT
  30 MPH.

* SOME LOCATIONS NEAR THE PATH OF THE STORM THROUGH 215 PM EST...    
  LITTLE HOPE...DONALDSONVILLE 
  LELA...DESSER
  IRON CITY
  BRINSON...REYNOLDSVILLE
  ELDORENDO...CYRENE
  DECATUR COUNTY AIRPORT...HALES LANDING

THE MAIN THREAT FROM THIS STORM IS DAMAGING WINDS. LARGE HAIL IS ALSO
POSSIBLE.


LAT...LON 3102 8493 3084 8495 3071 8440 3106 8438

MRV

NNNN

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 11, 2:14 PM EST	Severe Thunderstorm Warning	TAE	Decatur, Grady, Mitchell	46 min
Mar 11, 2:47 PM EST	Severe Thunderstorm Warning	TAE	Early	43 min
Mar 11, 4:57 PM EST	Severe Thunderstorm Warning	TAE	Decatur, Seminole	38 min
Mar 11, 5:35 PM EST	Severe Thunderstorm Warning	TAE	Decatur	25 min
Mar 11, 6:33 PM EST	Severe Thunderstorm Warning	TAE	Grady, Thomas	42 min
Mar 11, 6:41 PM EST	Severe Thunderstorm Warning	TAE	Decatur	34 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2000 Every severe thunderstorm warning 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; radar from the NEXRAD Level II archive.