Alert archive / Florida / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 21, NWS Tampa Bay, FL

June 26, 1990Pinellas County, Florida

NWS Tampa Bay, FL issued this severe thunderstorm warning at Jun 26, 1990, 1:03 PM EDT for Pinellas County, Florida. It was in force for 23 min.

The area

The counties it named.

The facts

Issued
Jun 26, 1990, 1:03 PM EDT (17:03 UTC)
Expired
Jun 26, 1990, 1:26 PM EDT
In force
23 min
Issued by
NWS Tampa Bay, FL
Area
Whole counties

County Pinellas County, FL

The radar

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

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 5.1 hours before the alert went out and 40 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 1990-06-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2489 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 1990-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 5 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
2489 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
776 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
5 m²/s²
0-3 km storm-relative helicity
62 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 261704
SVRTBW
FLC103-261800-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TAMPA BAY AREA RUSKIN FL
103 PM EDT TUE JUN 26 1990
 
THE NATIONAL WEATHER SERVICE IN TAMPA BAY AREA RUSKIN HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  200 PM EDT
FOR PEOPLE...
 
IN WEST CENTRAL FLORIDA
 
   ...PINELLAS COUNTY
 
AND ADJACENT COASTAL WATERS
INCLUDING THE BAY AND INLAND WATERS
 
STRONG THUNDERSTORMS ARE MOVING ONSHORE IN PINELLAS COUNTY.
A FUNNEL CLOUD WAS BRIEFLY SIGHTED NEAR TARPON SPRINGS AROUND 1245PM.
RADAR INDICATES LARGE HAIL IS POSSIBLE IN THESE
THUNDERSTORMS AND WATERSPOUTS MAY FORM NEARSHORE.
THE THUNDERSTORMS ARE MOVING SLOWLY TO THE NORTHEAST.
 
 
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 WINDOWS.
 
WATERSPOUTS THAT MOVE ONSHORE CAN DO CONSIDERABLE DAMAGE.
SHORELINE RESIDENTS SHOULD BE ON THE ALERT FOR THIS DANGER
WHENEVER WATERSPOUTS ARE SIGHTED.

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; the sounding from the Mesonet's radiosonde archive.