Alert archive / Florida / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 116, NWS Tampa Bay, FL

June 21, 1998Hillsborough County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Jun 21, 1998, 3:00 PM EDT for Hillsborough County, Florida. It was in force for 60 min. 4 reports 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
Jun 21, 1998, 3:00 PM EDT (19:00 UTC)
Expired
Jun 21, 1998, 4:00 PM EDT
In force
60 min
Issued by
NWS Tampa Bay, FL
Area
Whole counties

County Hillsborough County, FL

What was reported inside it

TimeReportWhereRemark
Jun 21, 3:05 PM EDTHail 0.75Tampa, FLDime sized hail was reported near the intersection of U.S. Highway 92 (Dale Mabry) and State Road 579 (Fletcher Avenue).
Jun 21, 3:10 PM EDTThunderstorm WindLutz, FLSkywarn Spotters reported thunderstorm winds downed two large trees and snapped off the tops of a few others along U.S. Highway 92 (Dale Mabry) in Lutz.
Jun 21, 3:26 PM EDTHail 0.75Tampa, FLDime sized hail was reported near the intersection of State Road 580 (Busch Boulevard) and 48th Street by a Skywarn Spotter.
Jun 21, 3:30 PM EDTThunderstorm WindPlant City, FLThunderstorm winds snapped a large 500-pound, 15 inch oak branch which fell atop and killed a 71 year old female while she walked along a sidewalk near the 6300 block of State Road 39 in Plant City.

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

Tampa Bay, FL (KTBW), launched 12:00Z, 7.0 hours before the alert went out and 23 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 1998-06-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1764 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 1998-06-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 2 square meters per square second.1939Sfc1 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
1764 J/kg
Mixed-layer CIN
-67 J/kg
Mixed-layer LCL
862 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
2 m²/s²
0-3 km storm-relative helicity
-34 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 1:44 PM EDTSevere Thunderstorm WarningTBWCitrus, Hernando, Sumter61 min
Jun 21, 3:06 PM EDTSevere Thunderstorm WarningTBWManatee44 min
Jun 21, 3:09 PM EDTSevere Thunderstorm WarningTBWPasco66 min
Jun 21, 5:10 PM EDTSevere Thunderstorm WarningTBWPolk50 min

Nearby

Severe Thunderstorm Warnings in Florida, 1998Every severe thunderstorm warning 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.