Alert archive / Florida / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 2, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at Apr 16, 1989, 5:55 PM EDT for Glades County, Florida. It was in force for 30 min.
The area
The counties it named.
The facts
- Issued
- Apr 16, 1989, 5:55 PM EDT (21:55 UTC)
- Expired
- Apr 16, 1989, 6:25 PM EDT
- In force
- 30 min
- Issued by
- NWS Miami, FL
- Area
- Whole counties
County Glades 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 12:00Z, 9.9 hours before the alert went out and 146 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
- 231 J/kg
- Mixed-layer CIN
- -74 J/kg
- Mixed-layer LCL
- 819 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 71 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KMIA 162200
SVRMIA
FLC043-162225-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
555 PM EDT SUN APR 16 1989
THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 630 PM EDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
IN SOUTH FLORIDA
...GLADES
RADAR INDICATES AT 550 PM EDT A SEVERE THUNDERSTORM HAS FORMED OVER
GLADES COUNTY NEAR THE WESTERN SHORE OF LAKE OKEECHOBEE. THIS
THUNDERSTORM IS MOVING TOWARD THE NORTHEAST AT 10 MPH AND WILL BE
ACCOMPANIED BY LARGE HAIL...POSSIBLY DAMAGING WINDS...AND TORRENTIAL
RAINS. PRESENTLY RADAR INDICATES STORM JUST NORTHEAST OF LAKEPORT.
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.
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, Apr 16, 5:42 PM EDT, 13 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MIAMI FL 540 PM EDT SUN APR 16 1989 AT 530 PM MIAMI RADAR INDICATED A STRONG THUNDERSTORM...ATTENDED BY VERY HEAVY RAINFALL...WAS LOCATED JUST WEST OF LAKE OKEECHOBEE AT MOORE HAVEN. RESIDENTS OF SOUTHEAST GLADES COUNTY SHOULD BE ALERT FOR THIS STORM MAY PRODUCE STRONG GUSTY WINDS...FREQUENT DANGEROUS LIGHTNING...VERY HEAVY RAIN...AND POSSIBLE HAIL DURING THE NEXT HOUR AS IT MOVES NORTHEAST AT 10 MILES AN HOUR. SCATTERED SHOWERS AND THUNDERSTORMS...SOME ATTENDED BY VERY HEAVY RAINFALL...CONTINUED OVER THE SOUTHERN PENINSULA SOUTH OF A STUART /VENICE LINE TO THE INTERIOR SECTIONS AT WESTERN DADE COUNTY. THIS ACTIVITY EXTENDED WELL OFFSHORE THE SOUTHEAST COAST TO THE NORTHERN AND WESTERN BAHAMAS. OTHER SCATTERED SHOWERS WERE OVER SOUTHEAST DADE AT HOMESTEAD AND FLORIDA CITY AND ALONG LAKE PLACID. MOVEMENT OF THE THUNDERSTORMS WAS NORTHEAST AT 10 MILES AN HOUR.
Special weather statement, Apr 16, 5:55 PM EDT, 0 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MIAMI FL 740 PM EDT SUN APR 16 1989 ...THIS STATEMENT IS FOR RESIDENTS IN EASTERN DADE COUNTY... A VERY SLOW MOVING LINE OF THUNDERSTORMS HAS FORMED JUST INLAND FROM THE COASTLINE OF DADE COUNTY EXTENDING OVER MUCH OF THE METROPOLITAN AREA OF MIAMI SOUTHWARD TO HOMESTEAD. THESE THUNDERSTORMS ARE PRODUCING SOME HEAVY RAINS...DANGEROUS LIGHTNING AND THE POSSIBILITY OF SOME SMALL HAIL AS THEY PASS SLOWLY OFFSHORE WITHIN THE NEXT TWO HOURS. HAIL TO ONE-QUARTER INCH SIZE WAS REPORTED JUST NORTH OF HOMESTEAD AFB AREA AT AROUND 6 PM. MIAMI INTERNATIONAL AIRPORT REPORTED WINDS GUSTING TO 32 MPH WITH A THUNDERSTORM AT 7 PM. LOCALIZED STREET FLOODING CAN BE EXPECTED TO ACCOMPANY THESE THUNDERSTORMS DUE TO THEIR SLOW MOVEMENT. MOTORISTS ARE CAUTIONED TO DRIVE CAREFULLY ON THE SLICK STREETS. SOME INTERSECTIONS OR HIGHWAY CONSTRUCTION AREAS MAY BE COVERED WITH WATER FOR A PERIOD OF TIME. ! ADDITIONAL STATEMENTS WILL BE ISSUED SHOULD CONDITIONS WARRANT.
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; the sounding from the Mesonet's radiosonde archive.