Alert archive / Florida / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 5, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at Jul 14, 1987, 2:26 PM EDT for Miami-Dade County, Florida. It was in force for 64 min.
The area
The counties it named.
The facts
- Issued
- Jul 14, 1987, 2:26 PM EDT (18:26 UTC)
- Expired
- Jul 14, 1987, 3:30 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, 6.4 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
- 689 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 865 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- 6 m²/s²
- 0-3 km storm-relative helicity
- 4 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 141826
SVRMIA
FLC025-141930-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
226 PM EDT TUE JUL 14 1987
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING
EFFECTIVE UNTIL 330 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTY...
IN SOUTHEAST FLORIDA
...SOUTHERN DADE
RADAR INDICATES A VERY STRONG THUNDERSTORM DEVELOPING RAPIDLY IN
SOUTH DADE COUNTY. DAMAGING WINDS DANGEROUS LIGHTNING AND POSSIBLE HAI
ARE POSSIBLE AS THIS THUNDERSTORM MOVES TO THE EAST AT 10 MPH.
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 GWEATHER 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, Jul 14, 12:08 PM EDT, 2 hours 18 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WEST PALM BEACH FL
1208 PM EDT TUE JUL 14 1987
RADAR SHOWED STRONG THUNDERSTORMS MOVING ONTO LAKE OKEECHOBEE FROM
THE WEST. OTHER STRONG THUNDERSTORMS WERE APPROACHING SOUTHWEST PALM
BEACH COUNTY FROM THE WEST.
THESE THUNDERSTORMS WERE MOVING TO THE EAST AT 10 MPH WITH FREQUENT
LIGHTNING..GUSTY WIND..HEAVY RAIN AND POSSIBLE HAIL.
RESIDENTS AND BOATERS SHOULD BE ALERT FOR THESE STRONG THUNDERSTORMS
DURING THE NEXT TWO HOURS. OTHER STRONG THUNDERSTORMS WERE EXPECTED
TO DEVELOP THIS AFTERNOON AND EVENING.
+Special weather statement, Jul 14, 1:44 PM EDT, 42 minutes before
SPECIAL WEATHER AND MARINE STATEMENT NATIONAL WEATHER SERVICE WEST PALM BEACH FL 1343 PM EDT TUE JUL 14 1987 RADAR SHOWED STRONG THUNDERSTORMS MOVING INTO SOUTHWESTERN PALM BEACH COUNTY AND THE SOUTH END OF LAKE OKEECHOBEE. THESE THUNDERSTORMS WERE MOVING TO THE EAST AT 10 MPH WITH DANGEROUS LIGHTNING STRIKES. STRONG AND GUSTY WINDS ..HEAVY RAIN AND POSSIBLE HAIL.AND WILL CAUSE VERY ROUGH LAKE CONDITIONS AND BOATERS SHOULD AVOID THESE THUNDERSTmORMS. RESIDENTS SHOULD MOVE TO A SAFE PLACE IF THE WEATHER BECOMES THREATENING. THESE THUNDERSTORMS MAY LAST MOST OF THE AFTERNOON.
Special weather statement, Jul 14, 1:50 PM EDT, 36 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MIAMI FL 145 PM EDT TUE JUL 14 1987 ...THIS STATEMENT IS FOR DADE BROWARD AND THE UPPER KEYS PART OF MONROE COUNTY... AT 125 PM AREAS OF STRONG THUNDERSTORMS WITH HEAVY RAIN HAD DEVELOPED OVER SOUTHERN DADE COUNTY AND OVER THE COASTAL WATERS NEAR NORTHERN KEY LARGO. ANOTHER VERY STRONG THUNDERSTORM WAS MOVING TO THE EAST OVER CENTRAL BROWARD COUNTY. THUNDERSTORMS ARE EXPECTED TO CONTINUE OVER SOUTHEASTERN FLORIDA THROUGH THE REST OF THE AFTERNOON AND INTO THE EARLY EVENING. THE STRONGER THUNDERSTORMS WILL HAVE LOCALLY HEAVY RAIN THAT MAY CAUSE MINOR FLOODING OF LOW LYING AREAS ALONG WITH STRONG GUSTY WINDS AND DANGEROUS LIGHTNING. ROUGH &AND CONFUSED SEAS WILL DEVELOP ALONG THE COASTAL WATERS NEAR SQUALLS AS THEY DEVELOP AND MOVE OFFSHORE.
The office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 2:12 PM EDT | Severe Thunderstorm Warning | MFL | Broward | 63 min |
| Jul 14, 2:40 PM EDT | Tornado Warning | MFL | Broward | 65 min |
Nearby
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.