Alert archive / Florida / Severe Thunderstorm Warnings in 1986
Severe Thunderstorm Warning 6, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at Mar 15, 1986, 5:54 PM EST for Broward County, Miami-Dade County, Florida. It was in force for 51 min.
The area
The counties it named.
The facts
- Issued
- Mar 15, 1986, 5:54 PM EST (22:54 UTC)
- Expired
- Mar 15, 1986, 6:45 PM EST
- In force
- 51 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, 10.9 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
- 780 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 588 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 110 m²/s²
- 0-3 km storm-relative helicity
- 214 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 4.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMIA 152254 SVRMIA FLC011-025-152345- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING NATIONAL WEATHER SERVICE MIAMI FL 554 PM EST SAT MAR 15 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING EFFECTIVE UNTIL 645 PM EST FOR PEOPLE IN THE FOLLOWING COUNTIES OF SOUTHEAST FLORIDA...SOUTHEAST BROWARD AND NORTH CENTRAL AND NORTHWEST DADE ...THIS WARNING ALSO INCLUDES THE ADJACENT COASTAL WATERS FOR THE COUNTIES JUST MENTIONED RADAR AT 545PM THIS EVENING IS STILL INDICATING SCATTERED TO NUMEROUS DEVELOPING THUNDERSTORMS OVER SOUTHEASTERN BROWARD AND NORTH CENTRAL AND NORTHEASTERN DADE COUNTY. THESE STROMS CONTINUE TO MOVE NORTHEAST 25 TO 30 MPH ACCOMPANIED BY STRONG GUSTY WINDS. INTENSE LIGHTNING WITH MARBLE SIZE HAIL POSSIBLE. ALSO BOATERS IN THE ADJACENT COASTAL WATERS OF SOUTHERAST BROWARD COUNTY SHOULD ALSO BE ALERT FOR THESE STORMS AND SHOULD SEE K SAFE HARBOR. 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, Mar 15, 12:38 PM EST, 5 hours 16 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MIAMI FL 1235 PM EST SAT MAR 15 1986 ...TORNADO WATCH NUMBER 37 IS IN EFFECT UNTIL 2PM FOR THE SOUTH FLORIDA COUNTIES OF COLLIER...HENDRY...AND GLADES... NO SEVERE WEATHER HAS BEEN REPORTED AT THIS TIME. AT 1230 PM EST RADAR INDICATED SCATTERED SHOWERS AND ISOLATED VERY HEAVY THUNDERSTORMS EXTENDED FROM ALONG AND OVER THE COASTAL SECTIONS AT FORT LAUDERDALE TO VERO BEACH AND PTHE ADJACENT WATERS. MOVEMENT WAS NORTHEAST AT 20 MILES AN HOUR.
Special weather statement, Mar 15, 1:15 PM EST, 4 hours 39 minutes before
^MIASPSPBI SPECIAL WEATHER AND MARINE STATEMENT NATIONAL WEATHER SERVICE WEST PALM BEACH FL 115 PM EST SAT MAR 15 1986 TORNADO WATCH NUMBER 37 REMAINS IN EFFECT UNTIL 2PM EST FOR MUCH OF CENTRAL AND SOUTH FLORIDA AND THE ADJACENT COASTAL WATERS WHICH INCLUDES THE FOLLOWING COUNTIES..PALM BEACH..MARTIN..ST LUCIE AND OKEECHOBEE COUNTIES.. REMEMBER A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. AT 105 PM EST RADAR INDICATED SHOWERS AND THUNDERSTORMS ALONG THE COAST OF MARTIN AND PALM BEACH COUNTIES EXTENDING NORTHEAST. A LINE OF VERY HEAVY THUNDERSTORMS WILL BE MOVING INTO OKEECHOBEE AND ST LUCIE COUNTIES AS WELL AS LAKE OKEECHOBEE FROM THE NORTHWEST WITHIN THE NEXT 2 HOURS. THE AREA IS MOVING TO THE SOUTHEAST AT 25 MPH WHILE THE THUNDERSTORMS ARE MOVING TO THE NORTHEAST AT 30 MPH. RESIDENTS IN THE ABOVE MENTIONED COUNTIES AND MARINE INTEREST IN THE COASTAL WATERS SHOULD STAY TUNED TO THE LATEST LOCAL STATEMENTS AND NOAA WEATHER RADIO.
Special weather statement, Mar 15, 1:47 PM EST, 4 hours 7 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MIAMI FL 145 PM EST SAT MAR 15 1986 ...TORNADO WATCH NUMBER 37 IS IN EFFECT UNTIL 2PM FOR THE SOUTH FLORIDA COUNTIES OF COLLIER...HENDRY...AND GLADES... NO SEVERE WEATHER HAS BEEN REPORTED AT THIS TIME. AT 135 PM EST RADAR INDICATED SCATTERED VERY HEAVY THUNDERSTORMS AND PATCHES OF RAIN EXTENDED OVER THE SOUTHEAST PENINSULA FROM VERO BEACH TO THE PALM BEACHES AND THE ADJACENT| WATERS AND SOUTH TO DADE COUNTY. THIS ACTIVITY ALSO EXTENDED WEST OVER THE INTERIOR SECTIONS OF THE SOUTHERN PENINSULA. MOVEMENT OF THE THUNDERSTORMS WAS NORTHEAST AT 30 MILES AN HOUR.
Special weather statement, Mar 15, 2:15 PM EST, 3 hours 39 minutes before
^MIASPSPBI SPECIAL WEATHER AND MARINE STATEMENT NATIONAL WEATHER SERVICE WEST PALM BEACH FL 215 PM EST SAT MAR 15 1986 THE TORNADO WATCH ISSUED AT 8 AM EST THIS MORNING FOR PALM BEACH..MARTIN..ST LUCIE AND OKEECHOBEE COUNTIES HAS EXPIRED. HOWEVER ISOLATED THUNDERSTORMS CONTINUE THROUGOUT THE ABOVE MENTIONED COUNTIES AND THE ADJACENT COASTAL WATERS. MARINE INTERESTS OPERATING ALONG THE COASTAL WATERS OF ST LUCIE..MARTIN AND PALM BEACH COUNTIES AND ON LAKE OKEECHOBEE SHOULD REMAIN ALERT FOR POSSIBLE HIGH WINDS AND ROUGH SEAS FOR THE NEXT SEVERAL HOURS. PERSONS IN THE ABOVE COUNTIES CAN LIKELY EXCEPT FOR THE NEXT SEVERAL HOURS PERIODS OF HEAVY RAIN..STRONG GUST WINDS AND DANGEROUS LIGHTNING. FURTHER STATEMENTS WILL BE ISSUED IF CONDITIONS WARRANT.
Special weather statement, Mar 15, 5:49 PM EST, 5 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE MIAMI FL 535 PM EST SAT MAR 15 1986 ...A SEVERE THUNDERSTORM WARNING AND A SPECIAL MARINE WARNING IS IN EFFECT UNTIL 645PM FOR DADE AND BROWARD COUNTIES.... AT 535PM EST RADAR INDICATED NUMEROUS VERY HEAVY THUNDERSTORMS AND PATCHES OF RAIN CONTINUED OVER MOST OF THE PENINSULA...EXCEPT THE EXTREME SOUTH AND SOUTHWEST PORTIONS...SOUTH OF A JENSEN BEACH/ NAPLES LINE. THIS ACTIVITY ALSO EXTENDED INTO THE ATLANTIC TO THE NORTHERN BAHAMAS. MOVEMENT OF THE THUNDERSTORMS WAS NORTHEAST AT 30 MILES AN HOUR.
The office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 15, 4:53 PM EST | Severe Thunderstorm Warning | MFL | Broward, Miami-Dade | 52 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.