Alert archive / Florida / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 20, NWS Miami, FL

June 7, 1986Miami-Dade County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Jun 7, 1986, 5:41 PM EDT for Miami-Dade County, Florida. It was in force for 64 min.

The area

The counties it named.

The facts

Issued
Jun 7, 1986, 5:41 PM EDT (21:41 UTC)
Expired
Jun 7, 1986, 6:45 PM EDT
In force
64 min
Issued by
NWS Miami, FL
Area
Whole counties

County Miami-Dade 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

Key West, FL (KEYW), launched 12:00Z, 9.7 hours before the alert went out and 169 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, Key West, FL at 12:00Z on 1986-06-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1611 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Key West, FL at 12:00Z on 1986-06-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 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
1611 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
592 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
31 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 KMIA 072141
SVRMIA
FLC025-072245-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
541 PM EDT SAT JUN 7 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 645 PM EDT FOR PEOPLE IN THE FOLLOWING 
COUNTY OF

SOUTHEAST FLORIDA...NORTHWEST DADE

  AT 515 PM EDT A FUNNEL CLOUD WAS SIGHTED OVER NORTHWEST DADE
 COUNTY ABOUT 40 MILES WEST MIAMI INTERNATIONAL AIRPORT. RADAR
 INDICATES SCATTERED SHOWERS AND THUNDERSTORMS OVER MOST OF WESTERN
 DADE COUNTY. CONDTIONS REMAIN FAVORABLE FOR ADDITIONAL FUNNEL
 CLOUD FORMATION DURING THE NEXT HOUR OR SO. THESE THUNDERSTOMS
 MAY BE ACCOMPANIED BY FREQUENT AND INTENSE LIGHTN'ING AND LOCALLY
 STRONG GUSTY WIND.

IF THREATENING WEATHER APPROACHES YOU SHOULD GO TO A SAFE PLACE
IMMEDIATELY..AND YOU SHOULD ASK THE NEAREST LAW ENFORCEMENT AGENCY
TO RELAY YOUR SEVERE WEATHER REPORTS TO THE LOCAL NATIONAL WEATHER

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 7, 7:53 AM EDTTornado WarningMFLMiami-Dade67 min

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.