Alert archive / Florida / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 9, NWS Melbourne, FL
NWS Melbourne, FL issued this severe thunderstorm warning at Jul 14, 1987, 5:48 PM EDT for Indian River County, Florida. It was in force for 57 min.
The area
The counties it named.
The facts
- Issued
- Jul 14, 1987, 5:48 PM EDT (21:48 UTC)
- Expired
- Jul 14, 1987, 6:45 PM EDT
- In force
- 57 min
- Issued by
- NWS Melbourne, FL
- Area
- Whole counties
County Indian River 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, 9.8 hours before the alert went out and 180 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
- 4143 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 599 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- -1 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 142148 SVRDAB FLC061-142245- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE DAYTONA BEACH FL 548 PM EDT TUE JUL 14 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 645 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTY OF EAST CENTRAL FLORIDA...INDIAN RIVER RADAR INDICATES SEVERE THUNDERSTORMS OVER THE WESTERN PORTION OF INDIAN RIVER COUNTY IN THE FELLSMERE AREA MOVING EAST AT 15 MPH. THESE THUNDERSTORMS WILL BE MOVING TOWARD THE COAST AND INTO THE VERO BEACH AREA WITH THE NEXT HOUR. A POSSIBLE TORANDO WAS REPORTED AT 533PM IN WESTERN INDIAN RIVER COUNTY. IF YOU ARE IN OR NEAR THE WARNED AREA GET TO A REINFIORCED SHELTER AND PREPARE FOR STRONG DAMAGING WINDS...LARGE HAIL...VERY HEAVY RAIN AND DANGEROUS LIGHTNING. REMEMBER...THESE STORMS CAN AND OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE OR NO ADVANCE WARNING.
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, 3:59 PM EDT, 1 hour 49 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DAYTONA BEACH FL 350PM EDT TUE JUL 14 1987 A SPECIAL MARINE WARNING HAS BEEN ISSUED FOR VOLUSIA COUNTY AT 345 PM AND WILL REMAIN IN EFFECT UNTIL 5PM EDT. VERY STRONG THUNDERSTORMS HAD DEVELOPED RAPIDLY OVER THE WEST PORTION OF VOLUSIA COUNTY DURING THE PAST HOUR AND HAD BEGUN MOVING TOWARD THE EAST ACCOMPANIED WITH VERY STRONG GUSTY WINDS. AT 333 PM EDT A GUST TO 45 KNOTS WAS RECORDED AT THE NATIONAL WEATHER SERVICE OFFICE AT DAYTONA BEACH AND EARLIER IN THE AFTERNOON SIMILAR WIND READINGS...ONLY SLIGHTLY LESS...WERE RECORDED IN THE JACKSONVILLE AREA. AT 335PM EDT RADAR INDICATED VERY STRONG THUNDERSTORMS FROM AROUND ORMOND BEACH...JUST NORTH OF DAYTONA BEACH...EXTENDING INLAND TO AROUND DELAND. A FEW OTHER VERY HEAVY THUNDERSTORMS WERE ALSO OCCURRING NEAR CAPE CANAVERAL AND COCOA AND OVER THE INTERIOR OF THE STATE BETWEEN LAKE OKEECHOBEE AND TAMPA. THUNDERSTORMS OVER THE NORTHEAST FLORIDA COAST HAD MOVED OFFSHORE BUT RAIN CONTINUED OVER A GOOD PORTION OF NORTHEAST FLORIDA EXTENDING INLAND ABOUT 50 MILES FROM ST AUGUSTINE TO BRUNSWICK GEORGIA. THESE THUNDERSTORMS ARE LIKELY TO CONTINUE TO PRODUCE STORNG GUSTY WINDS AND LOCALLY ROUGH SEAS AS THEY MOVE EAST AT 15 MPH. MARINERS SHOULD REMAIN IN PORT OR RAMAIN CLEAR OF THESE THUNDERSTORMS..
Special weather statement, Jul 14, 4:47 PM EDT, 1 hour 1 minute before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE DAYTONA BEACH FL 431PM EDT TUE JUL 14 1987 A SPECIAL MARINE WARNING WILL REMAIN IN EFFECT UNTI 5 PM EDT FOR VOLUSIA COUNTY... A BAND OF VERY STRONG THUNDERSTORMS WAS LOCATED OVER THE ATLANTIC COASTAL WATERS OF VOLUSIA COUNTY EXTENDING FROM THE COAST JUST SOUTH OF NEW SMYRNA BEACH TO ABOUT 20 MILES NORTHEAST OF DAYTONA BEACH. A FEW VERY HEAVY THUNDERSTORMS WERE ALSO OCCURRING ALONG AND JUST OFFSHORE THE CANAVERAL NATIONAL SEASHORE PARK... VERY HEAVY THUNDERSTORMS WITH VERY HEAVY RAINS HAD ALSO BECOME SCATTERED ACROSS EAST CENTRAL FLORIDA FROM MELBOURNE AND FT PIERCE INLAND TO NEAR LAKELAND AND WACHULA. PATCHES OF RAIN AND A FEW HEAVY THUNDERSTORMS CONTINUED ALONG THE NORTHEAST FLORIDA COAST FROM JACKSONVILLE TO ST AUGUSTINE..EXTENDING INLAND ABOUT 40 MILES. THE THUNDERSTORMS OFFSHORE DAYTONA BEACH AND VOLUSIA COUNTY ARE LIKELY TO PRODUCE STRONG GUSTY WINDS...LOCALLY ROUGH SEAS...AND FREQUENT DANGEROUS LIGHTNING AS THEY CONTINUE MOVING OFFSHORE. MARINERS SHOULD REMAIN IN PORT OR RAMAIN CLEAR OF THESE THUNDERSTORMS.. THE THUNDERSTORMS WERE MOVING EAST AT 15 MPH.
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.