Alert archive / Florida / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 17, NWS Melbourne, FL

June 25, 1986Lake County, Orange County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Jun 25, 1986, 3:02 PM EDT for Lake County, Orange County, Florida. It was in force for 58 min.

The area

The counties it named.

The facts

Issued
Jun 25, 1986, 3:02 PM EDT (19:02 UTC)
Expired
Jun 25, 1986, 4:00 PM EDT
In force
58 min
Issued by
NWS Melbourne, FL
Area
Whole counties

Counties Lake County, FL, Orange 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

Cape Canaveral, FL (KXMR), launched 12:00Z, 7.0 hours before the alert went out and 101 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, Cape Canaveral, FL at 12:00Z on 1986-06-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 906 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, Cape Canaveral, FL at 12:00Z on 1986-06-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -40 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
906 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
574 m above ground
0-6 km bulk shear
4 kt
0-1 km storm-relative helicity
-40 m²/s²
0-3 km storm-relative helicity
-59 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 
TTAAOO KMCO 251902
SVRMCO
FLC069-095-252000-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ORLANDO FL
302 PM EDT WED JUN 25 1986
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL  400 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTIES:
 
IN CENTRAL FLORIDA
          ..NORTH CENTRAL LAKE..NORTHWESTERN ORANGE

VERY STRONG THUNDERSTORMS HAVE DEVELOPED IN LAKE AND ORANGE COUNTIES
IN THE PAST HOUR. FUNNEL CLOUDS HAVE ALSO BEEN OBSERVED. VERY LITTLE
MOVEMENT WAS INDICATED.
WHEN THUNDERSTORMS ARE OCCURRING, PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING.  DO NOT STAND BY) WINDOWS.  DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED.  MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.

Nearby

Severe Thunderstorm Warnings in Florida, 1986Every severe thunderstorm warning 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.