Alert archive / Florida / Tornado Warnings in 1998

Tornado Warning 70, NWS Tampa Bay, FL

September 25, 1998DeSoto County, Florida

NWS Tampa Bay, FL issued this tornado warning at Sep 25, 1998, 2:20 PM EDT for DeSoto County, Florida. It was in force for 25 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Sep 25, 1998, 2:20 PM EDT (18:20 UTC)
Expired
Sep 25, 1998, 2:45 PM EDT
In force
25 min
Issued by
NWS Tampa Bay, FL
Area
Whole counties

County DeSoto County, FL

What was reported inside it

TimeReportWhereRemark
Sep 25, 2:50 PM EDTTornado F0Arcadia, FLThe De Soto County Emergency Management reported that a weak tornado, associated with an outer band of Hurricane Georges, sporadically touched down along a narrow path and toppled a few trees and branches before it lifted and dissipated.

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 watch it was issued in

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

IssuedProductOfficeLasted
Sep 25, 11:00 AM EDTTornado WatchSPC12 hr

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 6.3 hours before the alert went out and 82 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, Tampa Bay, FL at 12:00Z on 1998-09-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 324 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, Tampa Bay, FL at 12:00Z on 1998-09-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 6 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
324 J/kg
Mixed-layer CIN
-64 J/kg
Mixed-layer LCL
920 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
6 m²/s²
0-3 km storm-relative helicity
37 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 
TTAA00 KTBW 251820 RRA
TORTBW
FLC027-251845-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
220 PM EDT FRI SEP 25 1998

THE NATIONAL WEATHER SERVICE IN RUSKIN HAS ISSUED A

* TORNADO WARNING FOR...
  DESOTO COUNTY IN SOUTH CENTRAL FLORIDA

* UNTIL 245 PM EDT

* AT 215 PM...A TORNADO WAS REPORTED BY EMERGENCY OFFICIALS ABOUT 5
  MILES EAST OF ARCADIA ALONG STATE ROAD 70. THE TORNADO WAS MOVING
  NORTHWEST AT 30 MPH.N

* LOCATIONS IN THE PATH OF THE STORM

  ARCADIA BY 225 PM

THIS IS A DANGEROUS SITUATION. PERSONS IN THE PATH OF THE STORM
NEED TO TAKE COVER IN A STURDY BUILDING. MOBILE HOMES AND CARS ARE
NOT SAFE.

SOBIEN/ZALESKI

What forecasters said that day

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

NWS Tampa Bay, FL wrote its last area forecast discussion before this tornado warning went out at Sep 25, 2:10 PM EDT, 10 minutes earlier.

Area forecast discussion, Sep 25, 2:10 PM EDT, 10 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TAMPA BAY AREA/RUSKIN, FL
210 PM EDT FRI SEP 25 1998

.CURRENTLY...ACTIVE LATE MORNING/EARLY AFTERNOON ON THE 88D AS
SEVERAL TORNADO WARNINGS HAVE ALREADY BEEN ISSUED AND MORE LIKELY TO
COME. OTHERWISE...WINDS FINALLY TRENDING UPWARD IN SOUTHWEST FLORIDA
AS RAINBANDS APPROACH WITH GUSTS TO 40 KTS AT RSW WITHIN THE LAST
HOUR. TORNADO WATCH REMAINS IN EFFECT UNTIL 11PM FOR ALL AREAS EXCEPT
LEVY COUNTY.

.FORECAST...NOT A WHOLE LOT OF TIME FOR TOO MANY METEOROLOGICAL
INSIGHTS TODAY. BOTTOM LINE IS CONDITIONS WILL CONTINUE TO WORSEN
OVER THE NEXT COUPLE OF HOURS IN THE SOUTHWEST AS BANDS FROM GEORGES
WORK INTO THE AREA. WINDS WILL ALSO STEADILY BE ON THE INCREASE OVER
THE CENTRAL AND NORTH.

WITH EACH GEORGES TRACK FORECAST FROM NHC...THE STORM GETS SHIFTED
A TINY BIT FARTHER LEFT...WHICH IS BETTER NEWS FOR THE FORECAST
AREA...PARTICULARLY THE NORTH. AFTER COORDINATION WITH WSFO MIA...
WILL RECOMMEND LOWERING THE INLAND HIGH WIND WARNING OVER SUMTER AND
POLK COUNTIES TO AN ADVISORY. HIGH WIND WARNING OVER HARDEE...DESOTO
AND HIGHLANDS STILL LOOKS OK...AS THEY WILL BE CLOSER TO THE CENTER
OF GEORGES. WIND ADVISORY OVER CITRUS AND LEVY ACCEPTABLE AS WELL.
WE WILL WAIT UNTIL AFTER 4PM HURRICANE CENTER CONFERENCE CALL TO MAKE
FINAL DECISIONS FOR OTHER STATEMENTS BASED ON WHERE HURRICANE AND
TROPICAL STORM WATCHES/WARNINGS WILL BE ADJUSTED.  STILL FEEL THAT
FLOOD WATCH OVER ALL AREAS IS WARRANTED...ALTHOUGH IT NOW APPEARS
THAT RAINFALL OVER NORTHERN SECTIONS SHOULD BE LOWER THAN
ORIGINALLY THOUGHT...BUT STILL MAY BE ENOUGH TO CAUSE SOME PROBLEMS.

HAVE SPOKEN WITH MIA AND TLH REGARDING POSSIBLE ISSUANCE OF A COASTAL
FLOOD DWATCH FOR OUR AREA. NO FINAL DECISIONS HAVE BEEN IRONED OUT
YET AND WILL WAIT FOR THE CONFERENCE CALL ON THAT AS WELL.

THANKS FOR THE COORDINATION FROM ALL OFFICES.

PAYLOR

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 25, 8:59 AM EDTTornado WarningTBWPolk46 min
Sep 25, 9:52 AM EDTTornado WarningTBWPolk48 min
Sep 25, 10:40 AM EDTTornado WarningTBWPolk35 min
Sep 25, 11:46 AM EDTTornado WarningTBWPasco49 min
Sep 25, 1:12 PM EDTTornado WarningTBWPasco43 min
Sep 25, 1:21 PM EDTTornado WarningTBWPolk49 min
Sep 25, 2:23 PM EDTTornado WarningTBWCharlotte37 min

Nearby

Tornado Warnings in Florida, 1998Every tornado warning in 1998Tornadoes in 1998

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.