Alert archive / Florida / Tornado Warnings in 1986

Tornado Warning 9, NWS Tampa Bay, FL

July 7, 1986Pinellas County, Florida

NWS Tampa Bay, FL issued this tornado warning at Jul 7, 1986, 7:29 PM EDT for Pinellas County, Florida. It was in force for 26 min.

The area

The counties it named.

The facts

Issued
Jul 7, 1986, 7:29 PM EDT (23:29 UTC)
Expired
Jul 7, 1986, 7:55 PM EDT
In force
26 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, 11.5 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 1986-07-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 198 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 1986-07-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 36 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
198 J/kg
Mixed-layer CIN
-100 J/kg
Mixed-layer LCL
960 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
36 m²/s²
0-3 km storm-relative helicity
45 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KTBW 072330
TORTBW
FLC103-080030-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED
TORNADO AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE TAMPA BAY-RUSKIN FL
729 PM EDT MON JUL 7 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO AND SPECIAL
MARINE WARNING EFFECTIVE UNTIL 830 PM EDT FOR PEOPLE IN THE
FOLLOWING COUNTY OF

WEST CENTRAL FLORIDA...NORTHERN PINELLAS
...THIS WARNING ALSO INCLUDES THE ADJACENT COASTAL WATERS FOR THE
COUNTY JUST MENTIONED

 THE PINELLAS COUNTY SHERIFFS OFFICE HAS RECEIVED TWO REPORTS OF
 FUNNEL CLOUDS IN NORTHERN PINELLAS COUNTY. RADAR INDICATES A
 HEAVY THUNDERSTORM IN THAT AREA MOVING TO THE WEST AT 10 MPH.
 THESE FUNNEL CLOUDS MAY TOUCH DOWN WITHIN THE NEXT 35 MINUTES.

IF YOU ARE IN THE PATH OF THIS TORNADO..GO TO A REINFORCED SHELTER
OR A CENTRAL INTERIOR ROOM ON THE LOWEST FLOOR. ABANDON CARS AND
MOBILE HOMES FOR A REINFORCED BUILDING.

 MARINE INTERESTS SHOULD BE PREPARED TO TAKE EVASIVE nACTION AS
 THIS THUNDERSTORM MOVES OVER THE GULF COASTAL WATERS OF
 NORTHERN PINELLAS COUNTY.

Nearby

Tornado Warnings in Florida, 1986Every tornado warning in 1986Tornadoes in 1986

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.