Alert archive / Florida / Tornado Warnings in 1986

Tornado Warning 10, NWS Tampa Bay, FL

August 10, 1986Pinellas County, Florida

NWS Tampa Bay, FL issued this tornado warning at Aug 10, 1986, 7:26 PM EDT for Pinellas County, Florida. It was in force for 64 min.

The area

The counties it named.

The facts

Issued
Aug 10, 1986, 7:26 PM EDT (23:26 UTC)
Expired
Aug 10, 1986, 8:30 PM EDT
In force
64 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, 11.4 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 1986-08-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 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 1986-08-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -15 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
NaN m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
-15 m²/s²
0-3 km storm-relative helicity
27 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 102328 COR
TORTBW
FLC103-110000-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED
TORNADO AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE TAMPA BAY-RUSKIN FL
726 PM EDT SUN AUG 10 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO AND SPECIAL
MARINE WARNING EFFECTIVE UNTIL 800 PM EDT FOR PEOPLE IN THE
FOLLOWING COUNTY OF

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

 PINELLAS EMERGENCY MANAGEMENT REPORTS A POSSIBLE TORNADO
 TOUCHDOWN IN THE GULFPORT AREA ON THE PINELLAS BEACHES. SEVERAL
 ROOFS OF MOBILE HOMES WERE TORN OFF. RADAR INDICATED A STRONG

 RESIDENTS AND BOATERS SHOULD BE ALERT TO THIS STORM AS OTHER
TORNADOES OR WATERSPOUTS MAY FORM IN THE NEXT HALF HOUR.

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.