Alert archive / Florida / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 2, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at Apr 15, 1987, 2:28 PM EDT for Broward County, Miami-Dade County, Florida. It was in force for 62 min.
The area
The counties it named.
The facts
- Issued
- Apr 15, 1987, 2:28 PM EDT (18:28 UTC)
- Expired
- Apr 15, 1987, 3:30 PM EDT
- In force
- 62 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, 6.5 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.
- Mixed-layer CAPE
- 1597 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 617 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 131 m²/s²
- 0-3 km storm-relative helicity
- 202 m²/s²
- Significant tornado parameter
- 1.5
- Supercell composite
- 9.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMIA 151828 SVRMIA FLC011-025-151930- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING NATIONAL WEATHER SERVICE MIAMI FL 228 PM EDT WED APR 15 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING EFFECTIVE UNTIL 330 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF SOUTHEAST FLORIDA...BROWARD AND NORTHERN DADE ...THIS WARNING ALSO INCLUDES THE ADJACENT COASTAL WATERS FOR THE COUNTIES JUST MENTIONED RADAR INDICATES SEVERAL INTENSE THUNDERSTORMS DEVLOPING RAPIDLY OVER MOST OF BROWARD AND NORTHERN DADE COUNTIES. HAIL HAS ALSO BEEN REPORTED BY THE PUBLIC AND THE NORTH DADE WATER PLANT. 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. THIS STORM WILL BE ACCOMPANIED BY DEADLY LIGHTNING..WIND EXCEEDING GALE FORCE AND VERY ROUGH SEAS. BOATERS SHOULD SEEK SAFE HARBOR. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER.. SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. 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 15, 2:00 PM EDT, 28 minutes before
TTAAOO KPBI 151800??SOU SPECIAL WEATHER AND MARINE STATEMENT NATIONAL WEATHER SERVICE WEST PALM BEACH FL 200 PM EDT WED APR 15 1987 ...A TORNADO WATCH IS IN EFFECT FOR PALM-BEACH...OKEECHOBEE..ST-LUCIE AND MARTIN COUNTIES UNTIL 6PM EDT... AT 200 PM EDT RADAR INDICATED SHOWERS AND THUNDERSTORMS SCATTERED OVER THE ABOVE MENTIONED COUNTIES. THEY WERE HOWEVER MORE NUNEROUS AND STRONGER OVER ADJACANT COUNTIES TO THE SOUTH AND NORTH. MOVEMENT WAS NORTHEST AROUND 20 MILES AN HOUR. RATHER STRONG THUNDERSTORMS WERE ALONG THE COAST NEAR BOCA RATON TO THE SOUTH AND NEAR JUPITOR AND HOBE SOUND TO THE NORTH. MOVING NORTHEAST THEY WILL BE OFFSHORE WITHIN THE HOUR. THE POTENTIAL FOR SEVERE WEATHER CONTINUES THROUGH THE AFLTERNOON. RESIDENTS SHOULD MONITOR LOCAL CONDITION AND LISTEN FOR LATER STATEMENTS AND WARNINGS SHOULD SEVERE WEATHER DEVELOP.
Local storm report, Apr 15, 2:20 PM EDT, 8 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE ORLANDO FL
1404 PM EDT WED APR 15 1987
1125 AM: 4 MOBILE HOMES DAMAGED , 1 OVERTURNED, 2 ROOFS BLOWN OFF,
OTHER WINDOW AND ROOF DAMAGE. JUST SOUTH OF LEESBURG FL.
1155 AM: SEVERAL MOBILE HOMES DAMAGED AND OVERTURNED. 5 MILES EAST
OF MOUNT DORA.
TORNADO WARNING ISSUED FOR LAKE COUNTY 1105 AM EDT TO 1205 PM EDT.
TORNADO WARNING ISSUED FOR LAKE AND NORTH ORANGE COUNTY AT
1145 AM EDT TO 1245 PM EDT.
WSO MCONearby
Severe Thunderstorm Warnings in Florida, 1987Every severe thunderstorm warning in 1987
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.