Alert archive / Florida / Tornado Warnings in 1998

Tornado Warning 1, NWS Tampa Bay, FL

January 8, 1998Pasco County, Sumter County, Florida

NWS Tampa Bay, FL issued this tornado warning at Jan 8, 1998, 5:01 AM EST for Pasco County, Sumter County, Florida. It was in force for 29 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
Jan 8, 1998, 5:01 AM EST (10:01 UTC)
Expired
Jan 8, 1998, 5:30 AM EST
In force
29 min
Issued by
NWS Tampa Bay, FL
Area
Whole counties

Counties Pasco County, FL, Sumter County, FL

What was reported inside it

TimeReportWhereRemark
Jan 8, 5:30 AM ESTThunderstorm Wind 50Richland, FLThunderstorm winds of 58 mph were observed by a Skywarn Spotter.

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
Jan 8, 2:30 AM ESTTornado WatchSPC7 hr

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 00:00Z, 10.0 hours before the alert went out and 90 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 00:00Z on 1998-01-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 649 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 00:00Z on 1998-01-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 233 square meters per square second.19395878Sfc1 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
649 J/kg
Mixed-layer CIN
-16 J/kg
Mixed-layer LCL
965 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
233 m²/s²
0-3 km storm-relative helicity
257 m²/s²
Significant tornado parameter
1.0
Supercell composite
4.4

Open this sounding in Storm Lab

The text

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

885 
WFUS1 KTBW 081004 RRA
TORTBW
FLC101-119-081050-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA - RUSKIN FL
501 AM EST THU JAN 8 1998

THE NATIONAL WEATHER SERVICE HAS ISSUED A...TORNADO WARNING
EFFECTIVE UNTIL 530 AM EST FOR

...SOUTHERN SUMTER COUNTY
...EASTERN PASCO COUNTY


AT 500 AM EST...NATIONAL WEATHER SERVICE RADAR INDICATED A DEVELOPING
TORNADO OVER EASTERN PASCO COUNTY JUST EAST OF SAN ANTONIO. MOVEMENT
WAS NORTHEAST AT 40 MPH.




A DOPPLER RADAR DETECTED TORNADO MEANS THAT THERE IS STRONG
ROTATION WITHIN A STORM. THE STORM MAY NOT BE PRODUCING A TORNADO AT
THE MOMENT...BUT WILL LIKELY DURING THE WARNING PERIOD. THE STORM MAY
ALSO INCLUDE HAIL AND DAMAGING STRAIGHT LINE WIND. THOSE IN THE PATH
OF THE STORM ARE ADVISED TO TAKE COVER IMMEDIATELY.

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 8, 3:39 AM ESTSevere Thunderstorm WarningTBWHillsborough, Manatee, Pinellas61 min
Jan 8, 3:39 AM ESTSevere Thunderstorm WarningTBWSarasota61 min
Jan 8, 7:08 AM ESTSevere Thunderstorm WarningTBWSarasota62 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.