Alert archive / Florida / Tornado Warnings in 1986

Tornado Warning 11, NWS Melbourne, FL

July 31, 1986Marion County, Florida

NWS Melbourne, FL issued this tornado warning at Jul 31, 1986, 8:42 PM EDT for Marion County, Florida. It was in force for 33 min.

The area

The counties it named.

The facts

Issued
Jul 31, 1986, 8:42 PM EDT (00:42 UTC)
Expired
Jul 31, 1986, 9:15 PM EDT
In force
33 min
Issued by
NWS Melbourne, FL
Area
Whole counties

County Marion 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 00:00Z, 0.7 hours before the alert went out and 171 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 00:00Z on 1986-08-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3098 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 00:00Z on 1986-08-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 53 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
3098 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
762 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
53 m²/s²
0-3 km storm-relative helicity
90 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 KDAB 010044
TORDAB
FLC083-010040-

BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DAYTONA BEACH FL
842 PM EDT THU JUL 31 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL 915 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTY OF

NORTH CENTRAL FLORIDA...CENTRAL MARION

AT 840 PM EDT RADAR INDICATED A SEVERE THUNDERSTORM WITH A
POSSIBLE TORNADO IN SOUTH CENTRAL MARION COUNTY MOVING
SOUZTH AT 15 MPH.

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.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 31, 8:30 PM EDTSevere Thunderstorm WarningMLBOsceola60 min

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.