Alert archive / Florida / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 5, NWS Tampa Bay, FL

May 15, 1990Hillsborough County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at May 15, 1990, 7:50 PM EDT for Hillsborough County, Florida. It was in force for 40 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
May 15, 1990, 7:50 PM EDT (23:50 UTC)
Expired
May 15, 1990, 8:30 PM EDT
In force
40 min
Issued by
NWS Tampa Bay, FL
Area
Whole counties

County Hillsborough County, FL

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

TimeReportWhereRemark
May 15, 8:05 PM EDTThunderstorm Wind 0Hillsborough, FL

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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 11.8 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 1990-05-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 237 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 1990-05-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -51 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
237 J/kg
Mixed-layer CIN
-136 J/kg
Mixed-layer LCL
1108 m above ground
0-6 km bulk shear
6 kt
0-1 km storm-relative helicity
-51 m²/s²
0-3 km storm-relative helicity
-36 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 152350
SVRTBW
FLC057-160030-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA RUSKIN FL
750 PM EDT TUE MAY 15 1990
 
THE NATIONAL WEATHER SERVICE IN TAMPA BAY AREA RUSKIN HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  830 PM EDT
FOR PEOPLE...
 
IN WEST CENTRAL FLORIDA
 
   ...NORTHERN HILLSBOROUGH COUNTY
 
A SEVERE THUNDERSTORM WAS DETECTED NEAR LUTZ. NO MOVEMENT WAS
DETECTED.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
ABANDON CARS AND MOBILE HOMES FOR A REINFORCED BUILDING. MOVE TO
AN INTERIOR ROOM ON THE LOWEST FLOOR. STAY AWAY FROM WINDOWSJ.
 
IF YOU SEE A TORNADO... HAIL OR DAMAGING WIND... CALL YOUR LOCAL
SHERIFFS OFFICE OR COUNTY EMERGENCY OPERATIONS CENTER AND REQUEST
THEY RELAY THIS INFORMATION TO THE NATIONAL WEATHER SERVICE.

Nearby

Severe Thunderstorm Warnings in Florida, 1990Every severe thunderstorm warning in 1990

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.