Alert archive / Florida / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 3, NWS Melbourne, FL
NWS Melbourne, FL issued this severe thunderstorm warning at Apr 18, 1987, 2:33 PM EDT for Volusia County, Florida. It was in force for 57 min.
The area
The counties it named.
The facts
- Issued
- Apr 18, 1987, 2:33 PM EDT (18:33 UTC)
- Expired
- Apr 18, 1987, 3:30 PM EDT
- In force
- 57 min
- Issued by
- NWS Melbourne, FL
- Area
- Whole counties
County Volusia 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
Jacksonville, FL (KAYS), launched 12:00Z, 6.6 hours before the alert went out and 168 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
- 5 J/kg
- Mixed-layer CIN
- -102 J/kg
- Mixed-layer LCL
- 854 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 44 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 KDAB 181833
SVRDAB
FLC127-181930-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE DAYTONA BEACH FL
233 PM EDT SAT APR 18 1987
THE NATIONAL WEATHER SERVICE HAS ISSUED A
SEVERE THUNDERSTORM WARNING AND SPECIAL MARINE WARNING
EFFECTIVE UNTIL 330 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTY...
IN EAST CENTRAL FLORIDA
...VOLUSIA
AND ADJOINING COASTAL WATERS.
A SEVERE THUNDERSTORM WAS DETECTED BY RADAR ABOUT 10 MILES WEST
SOUTHWEST OF DAYTONA BEACH MOVING RAPIDLY EAST AND TOWARD THE BEACHES
AT 30 MPH AND WILL BE MOVING OUT OVER THE COASTAL WATERS MOST
LIKELY JUST NORTH OF PONCE INLET
.
S G
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE 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, Apr 18, 1:03 PM EDT, 1 hour 30 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DAYTONA BEACH FL 100 PM EDT SAT APR 18 1987 ...THUNDERSTORMS WERE MOVING TO THE EAST COAST BEACHES FROM FLAGLER BEACH TO COCOA BEACH. RADAR SHOWED STRONG THUNDERSTORMS FORMIMG INLAND AND MOVING TO THE EAST COAST AT 25 MILES AN HOUR. THESE THUNDERSTOMS WILL PRODUCE DANGEROUS LIGHTNING..HAIL..HEAVY RAIN AND GUSTY WINDS. JELLY BEAN SIZED HAIL WAS REPORTED IN ORMOND BEACH AT 1255 PM. PERSONS ALONG THE BEACHES AND OTHER EXPOSED AREAS SHOULD TAKE COVER IF THUNDER IS HEARD. BOATERS OFFSHORE AND IN THE INLAND WATERS CAN EXPECT GUSTY WINDS AND HIGHER SEAS IN THUNDERSTORMS.
Special weather statement, Apr 18, 1:44 PM EDT, 49 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DAYTONA BEACH FL 145 PM EDT SAT APR 18 1987 ...THUNDERSTORMS CONTINED TO FORM INLAND AND MOVE THE THE EAST COAST BEACHES FROM ORMOND BEACH TO COCOA BEACH... RADAR SHOWED STRONG THUNDERSTORMS FORMIMG INLAND NEAR OCALA SOUTH TO ORLANDO THEN MOVING EAST AT 25 MPH TO THE COAST AND COASTAL WATERS. THESE THUNDERSTOMS WILL PRODUCE DANGEROUS LIGHTNING..HAIL..HEAVY RAIN AND GUSTY WINDS. JELLY BEAN SIZED HAIL WAS REPORTED IN ORMOND BEACH AT 1255 PM. HALF INCH HAIL WAS REPORTED IN PORT ORANGE AT 135 PM. PERSONS ALONG THE BEACHES AND OTHER EXPOSED AREAS SHOULD TAKE COVER IF THUNDER IS HEARD OR LIGHTNING IS OBSERVED. BOATERS OFFSHORE AND IN THE INLAND WATERWAYS CAN EXPECT GUSTY WINDS AND HIGHER SEAS IN THUNDERSTORMS.
Special weather statement, Apr 18, 1:48 PM EDT, 45 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DAYTONA BEACH FL 145 PM EDT SAT APR 18 1987 ...THUNDERSTORMS CONTINED TO FORM INLAND AND MOVE THE THE EAST COAST BEACHES FROM ORMOND BEACH TO COCOA BEACH... RADAR SHOWED STRONG THUNDERSTORMS FORMIMG INLAND NEAR OCALA SOUTH TO ORLANDO THEN MOVING EAST AT 25 MPH TO THE COAST AND COASTAL WATERS. THESE THUNDERSTOMS WILL PRODUCE DANGEROUS LIGHTNING..HAIL..HEAVY RAIN AND GUSTY WINDS. JELLY BEAN SIZED HAIL WAS REPORTED IN ORMOND BEACH AT 1255 PM. HALF INCH HAIL WAS REPORTED IN PORT ORANGE AT 135 PM. PERSONS ALONG THE BEACHES AND OTHER EXPOSED AREAS SHOULD TAKE COVER IF THUNDER IS HEARD OR LIGHTNING IS OBSERVED. BOATERS OFFSHORE AND IN THE INLAND WATERWAYS CAN EXPECT GUSTY WINDS AND HIGHER SEAS IN THUNDERSTORMS
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.