Alert archive / Florida / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 4, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at May 24, 1989, 2:51 PM EDT for Miami-Dade County, Florida. It was in force for 69 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- May 24, 1989, 2:51 PM EDT (18:51 UTC)
- Expired
- May 24, 1989, 4:00 PM EDT
- In force
- 69 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 24, 2:55 PM EDT | Hail 1.5 | Miami-Dade, FL | |
| May 24, 3:42 PM EDT | Hail 0.75 | Miami-Dade, FL |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Key West, FL (KEYW), launched 12:00Z, 6.9 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.
- Mixed-layer CAPE
- 1460 J/kg
- Mixed-layer CIN
- -44 J/kg
- Mixed-layer LCL
- 1142 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- 10 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KMIA 241854
SVRMIA
FLC025-242000-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE MIAMI FL
251 PM EDT WED MAY 24 1989
THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A
SEVERE THUNDERSTORM WARNING AND
SPECIAL MARINE WARNING EFFECTIVE UNTIL 400 PM EDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
IN SOUTHEAST FLORIDA
...EASTERN DADE
AND ADJOINING COASTAL WATERS BETWEEN OCEAN REEF AND HAULOVER.
SCATTERED THUNDERSTORMS LOCATED OVER EASTERN DADE COUNTY ARE MOVING
TOWARDS THE NORTHEAST AT 10 MPH. THESE THUNDERSTORMS ARE LOCALLY
SEVERE WITH HAIL TO ONE INCH...STRONG GUSTY SURFACE WINDS WHICH WILL
CAUSE ROUGH SEAS OVER THE COASTAL WATERS OF DADE COUNTY. FREQUENT
LIGHTNING CAN BE EXPECTED WITH THESE THUNDERSTORMS.
SEEK SHELTER FROM THIS THUNDERSTORM IN A STRONG BUILDING. DAMAGING
WIND..HAIL..VERY HEAVY RAIN..AND DEADLY LIGHTNING ARE ALL POSSIBLE
IN THIS THUNDERSTORM. DO NOT USE TELEPHONES OR ELECTRICAL APPLIANCES
AND STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.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 24, 1:50 PM EDT, 1 hour 1 minute before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MIAMI FL 150 PM EDT WED MAY 24 1989 ...THUNDERSTORMS DEVELOPING OVER DADE AND BROWARD COUNTIES... RADAR AND SURFACE OBSERVATIONS INDICATE THAT THUNDERSTORMS HAVE BEGUN TO DEVELOP OVER LAND. AT 140 PM MOST OF THESE THUNDERSTORMS EXTENDED FROM THE COAST WESTWARD ACROSS HOMESTEAD INTO THE EVERGLADES. CONDITIONS ARE FAVORABLE FOR THESE THUNDERSTORMS TO INTENSIFY RAPIDLY. RESIDENTS OF DADE ANsD BROWARD COUNTIES ESPECIALLY IN THE WESTERN SUBURBS SHOULD BE PREPARED TO CURTAIL THEIR OUTSIDE ACTIVITIES AS THESE STORMS MOVE EASTWARD LATER THIS AFTERNOON.
Special weather statement, May 24, 2:29 PM EDT, 22 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MIAMI FL 230 PM EDT WED MAY 24 1989 ...THUNDERSTORMS DEVELOPING RAPIDLY OVER SOUTHERN DADE COUNTY... THUNDERSTORMS CONTINUED TO DEVELOP RAPIDLY OVER SOUTHERN DADE COUNTY. AT 225 PM THUNDERSTORMS EXTENDED FROM HOMESTEAD NORTHWARD TO EAST OF CORAL GABLES. AT 200 PM SMALL HAIL WAS REPORTED FROM ONE OF THESE STORMS IN PERRINE. THESE STORMS ARE INTENSIFYING RAPIDLY NOW AND RESIDENTS OF SOUTHERN DADE COUNTY SHOULD CURTAIL THEIR OUTSIDE ACTIVITIES AT THIS TIME. THESE STORMS WILL BE ACOMPANIED BY STRONG GUSTY WINDS...SMALL HAIL AND FREQUENT LIGHTNING AS WELL AS HEAVY RAIN. ALSO BY 3 PM THESE STORMS SHOULD HAVE DEVELOPED INTO NORTHEASERN DADE AND SOUTHEASTERN BROWARD COUNTIES.
Local storm report, May 24, 2:34 PM EDT, 17 minutes before
LOCAL STORM REPORT NATIONAL WEATHER SERVICE MIAMI FL 233 PM EDT WED MAY 24 1989 BETWEEN 220 PM AND 230 PM HAIL 1 INCH IN DIAMETER WAS OBSERVED IN HOMESTEAD BY REPORTERS AT THE SOUTH DADE NEW LEADER NEWSPAPER.
The office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 24, 3:44 PM EDT | Severe Thunderstorm Warning | MFL | Broward, Miami-Dade | 46 min |
Nearby
Severe Thunderstorm Warnings in Florida, 1989Every severe thunderstorm warning in 1989
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.