Alert archive / Florida / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 9, NWS Tallahassee, FL

March 12, 2002Gadsden County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Mar 12, 2002, 5:07 PM EST for Gadsden County, Florida. It was in force for 53 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Mar 12, 2002, 5:07 PM EST (22:07 UTC)
Expired
Mar 12, 2002, 6:00 PM EST
In force
53 min
Issued by
NWS Tallahassee, FL
Area
Counties, with a storm outline in the text

County Gadsden County, FL

The radar

The Tallahassee radar (KTLH), 26 km from the middle of the area, began a volume at 22:06 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.

What was reported inside it

TimeReportWhereRemark
Mar 12, 5:30 PM ESTThunderstorm WindCountywide, FLNumerous trees and power lines down in Apalachicola, Carrabelle, St. George Island and East Point. Reported by the Franklin County EMA.
Mar 12, 5:55 PM ESTHail 0.75Tallahassee, FLDime size hail at the intersection of Tharpe and North Monroe Streets. Reported by Tallahassee Police.
Mar 12, 5:55 PM ESTThunderstorm WindCountywide, FLSome trees and power lines down. Reported by the Wakulla County Sheriff.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 10.1 hours before the alert went out and 29 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, Tallahassee Rgnl, FL at 12:00Z on 2002-03-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 35 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tallahassee Rgnl, FL at 12:00Z on 2002-03-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 293 square meters per square second.1939587897Sfc1 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
35 J/kg
Mixed-layer CIN
-138 J/kg
Mixed-layer LCL
507 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
293 m²/s²
0-3 km storm-relative helicity
316 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

000 
WUUS52 KTAE 122207
SVRTLH
FLC037-039-073-077-129-122300-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
504 PM EST TUE MAR 12 2002

THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  FRANKLIN COUNTY IN FLORIDA
  GADSDEN COUNTY IN FLORIDA
  LEON COUNTY IN FLORIDA
  LIBERTY COUNTY IN FLORIDA
  WAKULLA COUNTY IN FLORIDA

* UNTIL 600 PM EST...

* AT 504 PM EST..NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A  
  LINE OF SEVERE THUNDERSTORMS EXTENDING SOUTHWARD FROM WESTERN      
  GADSDEN COUNTY TO WESTERN FRANKLIN COUNTY MOVING EAST AT 45 MPH.   
  THIS LINE OF STORMS IS LIKELY PRODUCING WIND GUSTS UP TO 60 MPH    
  AND POSSIBLY SOME LARGE HAIL.

* SOME LOCATIONS NEAR THE PATH OF THE STORMS THROUGH 600 PM EST...
  CLIO...TELOGIA...
  LOWRY...SYCAMORE...
  LOCHIOCHA...SMITH CREEK...
  OTTER CAMP IN SW LEON CO...BLOXHAM...
  BROWN HOUSE HUNTING CAMP...FORT BRADEN...
  SHADY REST...LITTMAN...ST. GEORGE ISLAND

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


LAT...LON 3066 8489 2956 8502 2990 8433 3015 8411
          3066 8411

.END

17-GOULD

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 12, 3:53 PM ESTSevere Thunderstorm WarningTAEBay, Calhoun, Washington37 min
Mar 12, 4:26 PM ESTSevere Thunderstorm WarningTAECalhoun, Gulf, Liberty49 min
Mar 12, 5:07 PM ESTSevere Thunderstorm WarningTAEWakulla113 min
Mar 12, 5:07 PM ESTSevere Thunderstorm WarningTAEFranklin, Leon, Liberty2 hr
Mar 12, 6:42 PM ESTSevere Thunderstorm WarningTAETaylor48 min
Mar 12, 6:50 PM ESTSevere Thunderstorm WarningTAEMadison55 min

Nearby

Severe Thunderstorm Warnings in Florida, 2002Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.