Alert archive / Florida / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 16, NWS Miami, FL

May 22, 1986Broward County, Miami-Dade County, Florida

NWS Miami, FL issued this severe thunderstorm warning at May 22, 1986, 1:01 PM EDT for Broward County, Miami-Dade County, Florida. It was in force for 59 min.

The area

The counties it named.

The facts

Issued
May 22, 1986, 1:01 PM EDT (17:01 UTC)
Expired
May 22, 1986, 2:00 PM EDT
In force
59 min
Issued by
NWS Miami, FL
Area
Whole counties

Counties Broward County, FL, 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, 5.0 hours before the alert went out and 193 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 1986-05-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1507 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, Key West, FL at 12:00Z on 1986-05-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 22 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
1507 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
700 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
22 m²/s²
0-3 km storm-relative helicity
49 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 221701
SVRMIA
FLC011-025-221800-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
101 PM EDT THU MAY 22 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 200 PM EDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES OF

SOUTHEAST FLORIDA...SOUTHERN BROWARD AND NORTHERN DADE

  REPLACE THIS AREA WITH YOUR OPTIONAL FREE TEXT FORMAT STATEMENT
 AN AREA OF THUNDERSTORMS SOME SEVERE ARE NOW DEVELOPING OVER PARTS
 OF NORTH DADE COUNTY AND SOUTH BROWARD COUNTY. ALSO THE PUBLIC HAS
 REPORTED A QUARTER OF AN INCH SIZE HAIL STONES IN THE MIRAMAR AREA
 . THIS AREA OF THUNDERSTORMS IS MOVING TOWARDS THE NORTHEAST 15 TO
 20 MPH. RESIDENTS IN THE EFFECTED AREA SHOULD BE ALERT FOR GUSTY W
 INDS..LOCALLY HEAVY RAIN..AND POSSIBLE HAIL DURING THE NEXT HOUR.

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
SERVICE OFFICE.
1 follow-up statement
000 
TTAA00 KMIA 221704 COR
SVRMIA
FLC011-025-221800-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING..CORRECTION
NATIONAL WEATHER SERVICE MIAMI FL
101 PM EDT THU MAY 22 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 200 PM EDT FOR PEOPLE IN THE FOLLOWING
COUNTIES OF

SOUTHEAST FLORIDA...SOUTHERN BROWARD AND NORTHERN DADE

 AN AREA OF THUNDERSTORMS SOME SEVERE ARE NOW DEVELOPING OVER PARTS
 OF NORTH DADE COUNTY AND SOUTH BROWARD COUNTY. ALSO THE PUBLIC HAS
 REPORTED A QUARTER OF AN INCH SIZE HAIL STONES IN THE MIRAMAR AREA
 . THIS AREA OF THUNDERSTORMS IS MOVING TOWARDS THE NORTHEAST 15 TO
 20 MPH. RESIDENTS IN THE EFFECTED AREA SHOULD BE ALERT FOR GUSTY
 WINDS..LOCALLY HEAVY RAIN..AND POSSIBLE HAIL DURING THE NEXT HOUR.
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
SERVICE OFFICE.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, May 22, 12:46 PM EDT, 15 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE MIAMI FL
1243 PM EDT THU MAY 22 1986

NUMEROUS VERY HEAVY THUNDERSTORMS WERE OVER DADE AND BROWARD COUNTIES
AND THE ADJACENT COASTAL WATERS.  THUNDERSTORMS WERE MOST HEAVILY
CONCENTRATED OVER NORTHWEST DADE AND THE SOUTHERN HALF OF BROWARD
COUNTY. SOME OF THE HEAVIER THUNDERSTORMS MAY PRODUCE GUSTY WINDS AND
SMALL HAIL..AS WELL AS REDUCED VISIBILITY IN HEAVY RAIN.

MOVEMENT WAS NORTHEAST NEAR 20 MILES AN HOUR.

ELSEWHERE..A CLUSTER OF VERY HEAVY THUNDERSTORMS WAS OVER AND NORTH OF
THE LOWER FLORIDA KEYS.

NUMEROUS VERY HEAVY THUNDERSTORMS EXTENDED FROM NEAR BIMINI TO GRAND
BAHAMA ISLAND.

The office that day

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

IssuedProductOfficeCountiesLasted
May 21, 8:11 PM EDTSevere Thunderstorm WarningMFLBroward109 min
May 22, 1:40 PM EDTSevere Thunderstorm WarningMFLBroward65 min
May 22, 3:21 PM EDTSevere Thunderstorm WarningMFLBroward69 min
May 22, 4:35 PM EDTSevere Thunderstorm WarningMFLBroward, Hendry85 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.