Alert archive / Florida / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 6, NWS Melbourne, FL
NWS Melbourne, FL issued this severe thunderstorm warning at Jun 29, 1987, 6:29 PM EDT for Orange County, Seminole County, Florida. It was in force for 61 min.
The area
The counties it named.
The facts
- Issued
- Jun 29, 1987, 6:29 PM EDT (22:29 UTC)
- Expired
- Jun 29, 1987, 7:30 PM EDT
- In force
- 61 min
- Issued by
- NWS Melbourne, FL
- Area
- Whole counties
Counties Orange County, FL, Seminole 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, 10.5 hours before the alert went out and 150 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
- 787 J/kg
- Mixed-layer CIN
- -39 J/kg
- Mixed-layer LCL
- 877 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- -10 m²/s²
- 0-3 km storm-relative helicity
- -3 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 KMCO 292229 SVRMCO FLC095-117-292330- BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ORLANDO FL 629 PM EDT MON JUN 29 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 730 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF CENTRAL FLORIDA...NORTHEAST ORANGE AND SOUTHWEST SEMINOLE AT 628 PM EDT WEATHER SERVICE RADAR SHOWED STRONG THUNDER STORMS OVER ORANGE AND SEMINOLE COUNTIES FROM JUST NORTH OF EXECUTIVE AIRPORT TO NEAR SANFORD. SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 60 MPH... DESTRUCTIVE HAIL...DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN KINTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUISNESS. HEAVY RAINS FLOOD ROADS QUICKLY SO SLOW DOWN WHEN DRIVING INTO AREAS WHERE WATER COVERS THE ROAD.
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, Jun 29, 3:47 PM EDT, 2 hours 42 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DAYTONA BEACH FL 345 PM EDT MON JUN 29 1987 STRONG THUNDERSTORMS WERE OVER THE WESTERN PART OF VOLUSIA COUNTY IN THE BARBERVILLE AREA AND OVER THE INTERIOR OF THE STATE IN MARION COUNTY. THESE THUNDERSTORMS WERE DRIFTING SLOWLY NORTH AT LESS THAN 10 MPH. STRONG WIND GUSTS HAVE BEEN REPORTED DURING THE PAST HOUR IN THE BARBERVILLE AREA. PERSONS IN THE WESTERN PART OF VOLUSIA COUNTY AND IN MARION COUNTY CAN EXPECT STRONG WINDS...HEAVY RAIN AND DANGEROUS LIGHTNING WITH THESE THUNDERSTORMS FOR THE REST OF THE AFTERNOON.
Special weather statement, Jun 29, 4:03 PM EDT, 2 hours 26 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ORLANDO FL 400 PM EDT MON JUN 27 1987 AT 400 PM EDT WEATHER SERVICE RADAR SHOWED A STRONG THUNDERSTORM OVER CENTRAL FLORIDA IN THE EXTREME NORTHERN PART OF LAKE COUNTY. THIS STORM WAS DRIFTING TO THE NORTH ACCOMPANIED WITH LOCALLY HEAVY RAIN...STRONG GUSTY WINDS...FREQUENT LIGHTNING STRIKES AND POSSIBLE SMALL HAIL. TEMPORARY FLOODING OF STREETS AND HIGHWAYS WILL LIKELY OCCUR FOR THE NEXT 1 TO 2 HOURS AS THIS STORM MOVES THROUGH THE AREA.
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.