Alert archive / Florida / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 10, NWS Melbourne, FL

September 1, 1987Flagler County, Volusia County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Sep 1, 1987, 3:41 PM EDT for Flagler County, Volusia County, Florida. It was in force for 64 min.

The area

The counties it named.

The facts

Issued: Sep 1, 1987, 3:41 PM EDT (19:41 UTC)
Expired: Sep 1, 1987, 4:45 PM EDT
In force: 64 min
Issued by: NWS Melbourne, FL
Area: Whole counties

Counties Flagler County, FL, 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, 7.7 hours before the alert went out and 145 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1239 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 573 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 14 m²/s²
0-3 km storm-relative helicity: 42 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KDAB 011941
SVRDAB
FLC035-127-012045-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE DAYTONA BEACH FL
341 PM EDT TUE SEP 1 1987
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A
SEVERE THUNDERSTORM WARNING AND SPECIAL MARINE WARNING
EFFECTIVE UNTIL  445 PM EDT FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN NORTHEAST FLORIDA
          ...FLAGLER
IN EAST CENTRAL FLORIDA
          ...VOLUSIA
 
AND ADJOINING COASTAL WATERS
 
A SEVERE THUNDERSTORM WAS ABOUT 10 MILES EAST OF DELAND MOVING
NORTHEAST AT 10 MPH.
 
 
{Basis}
 
 
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.

Nearby

Severe Thunderstorm Warnings in Florida, 1987 Every 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.