Alert archive / Florida / Severe Thunderstorm Warnings in 1989
Severe Thunderstorm Warning 33, NWS Melbourne, FL
NWS Melbourne, FL issued this severe thunderstorm warning at Sep 16, 1989, 7:05 PM EDT for Flagler County, Florida. It was in force for 55 min.
The area
The counties it named.
The facts
- Issued
- Sep 16, 1989, 7:05 PM EDT (23:05 UTC)
- Expired
- Sep 16, 1989, 8:00 PM EDT
- In force
- 55 min
- Issued by
- NWS Melbourne, FL
- Area
- Whole counties
County Flagler 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, 11.1 hours before the alert went out and 121 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
- 683 J/kg
- Mixed-layer CIN
- -99 J/kg
- Mixed-layer LCL
- 925 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 79 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KDAB 162308
SVRDAB
FLC035-170000-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE DAYTONA BEACH FL
705 PM EDT SAT SEP 16 1989
THE NATIONAL WEATHER SERVICE IN DAYTONA BEACH HAS ISSUED A
SEVERE THUNDERSTORM WARNING AND
SPECIAL MARINE WARNING EFFECTIVE UNTIL 800 PM EDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
IN NORTHEAST FLORIDA
...FLAGLER
AND ADJOINING COASTAL WATERS.
A SEVERE THUNDERSTORM WAS DETECTED BY RADAR 15 MILES SOUTH
SOUTHWEST OF BUNNELL IN FLAGLER COUNTY AND WAS MOVING NORTHEAST
AT 20 MPH.
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.
AS THE THUNDERSTORMS MOVE OUT OVER THE COASTAL WATERS...BOATEERS
IN THE THREATENED AREA CAN EXPECT STRONG WINDS...ROUGH SEAS AND
LIGHTNING. BOATERS SHOULD TAKE NECESSARY ACTION TO AVOID THE
DANGEROUS THUNDERSTORMS.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, Sep 16, 4:12 PM EDT, 2 hours 53 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DAYTONA BEACH FL 410 PM EDT SAT SEP 16 1989 THUNDERSTORMS WITH VERY HEAVY RAIN...STRONG AND GUSTY WINDS... DANGEROUS LIGHTNING...AND POSSIBLY SOME HAIL WExRE OVER THE SOUTHWEST PART OF MARION COUNTY STRETCHING FROM OCALA WESTWARD TO THE LEVY COUNTY LINE. THESE THUNDERSTORMS WERE MOVING NORTH AT 10 MPH AND SHOULD CONTINUE OVER THE WESTERN PART OF MARION COUNTY FOR THE NEXT ONE TO TWO HOURS.
Nearby
Severe Thunderstorm Warnings in Florida, 1989Every severe thunderstorm warning in 1989
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.