Alert archive / Florida / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 64, NWS Melbourne, FL

July 6, 1992Flagler County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Jul 6, 1992, 3:17 PM EDT for Flagler County, Florida. It was in force for 58 min.

The area

The counties it named.

The facts

Issued
Jul 6, 1992, 3:17 PM EDT (19:17 UTC)
Expired
Jul 6, 1992, 4:15 PM EDT
In force
58 min
Issued by
NWS Melbourne, FL
Area
Whole counties

County Flagler County, FL

The nearest sounding before it

Jacksonville, FL (KAYS), launched 12:00Z, 7.3 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.

Skew-T log-pSkew-T log-p diagram, Jacksonville, FL at 12:00Z on 1992-07-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1184 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Jacksonville, FL at 12:00Z on 1992-07-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 103 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
1184 J/kg
Mixed-layer CIN
-70 J/kg
Mixed-layer LCL
1170 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
103 m²/s²
0-3 km storm-relative helicity
96 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 061918
SVRDAB
FLC035-062015-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE DAYTONA BEACH FL
317 PM EDT MON JUL 6 1992
 
THE NATIONAL WEATHER SERVICE IN DAYTONA BEACH HAS ISSUED A
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING EFFECTIVE
UNTIL 415 PM EDT FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTHEAST FLORIDA   ...FLAGLER COUNTY
 
SEVERE THUNDERTORMS MOVING RAPIDLY ACROSS FLAGLER COUNTY TOWARD
THE EAST COAST...
 
AT 320PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED A SEVERE
THUNDERSTORM MOVING OFF THE EAST SHORE OF LAKE CRESCENT INTO WEST
CENTRAL FLAGLER COUNTY.
 
THE STORM WAS MOVING TOWARD THE EAST AT 10 TO 15 MPH ON A TRACK
THAT WILL TAKE THE STORM VERY NEAR ANDALUSIA AND SR 100 TOWARD BUNNELL
...PALM COAST...AND FLAGLER BEACH.
 
 
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...BOATERS
IN THE THREATEENED 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, Jul 6, 3:06 PM EDT, 11 minutes before
FLZ009-012-062015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DAYTONA BEACH FL
306 PM EDT MON JUL 6 1992

THIS IS A SPECIAL WEATHER STATEMENT FOR MARION...FLAGLER...
AND VOLUSIA COUNTIES AND THEIR ADJACENT ATLANTIC COASTAL WATERS...

AT 305 PM EDT NATIONAL WEATHER SERVICE RADAR INDICATED STRONG
THUNDERSTORMS DEVELOPING OVER INLAND SECTIONS OF NORTH CENTRAL
FLORIDA...INCLUDING MARION COUNTY. THE STORMS EXTENDED FROM JUST
EAST OF LAKE GEORGE INTO CENTRAL MARION COUNTY.

THE STORMS WERE MOVING EAST AT 10 TO 15 MPH AND WILL LIKELY
BE AFFECTING FLAGLER AND THE NORTHERN SECTIONS OF VOLUSIA COUNTY
WITHIN THE NEXT FIFTEEN TO TWENTY MINUTES...AND THEIR COASTAL
WATERS SHORTLY THEREAFTER.

THESE STORMS WILL PRODUCE GUSTY WINDS...FREQUENT DANGEROUS LIGHTNING
STRIKES...AND VERY HEAVY RAINS AS THEY MOVE THROUGH THE AREA. BOATERS
TOO..CAN EXPECT LOCALLY ROUGH SEAS IN THE VICINITY OF THESE STORMS.

RESIDENTS ARE ADVISED TO BE ON THTE LOOKOUT FOR THE APPROACH OF THESE
STORMS AND SEEK SAFE SHELTER IMMEDIATELY...PAYING CLOSE HEED TO
LIGHTNING SAFETY RULES. MOTORISTS SHOULD EXERCISE EXTREME CAUTION
AND EXPECT DANGEROUS DRIVING CONDITIONS.

The office that day

Everything else NWS Melbourne, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 6, 4:04 PM EDTSevere Thunderstorm WarningMLBVolusia56 min
Jul 6, 5:22 PM EDTSevere Thunderstorm WarningMLBBrevard, Orange68 min
Jul 6, 6:44 PM EDTSevere Thunderstorm WarningMLBOrange61 min
Jul 6, 6:55 PM EDTSevere Thunderstorm WarningMLBBrevard65 min

Nearby

Severe Thunderstorm Warnings in Florida, 1992Every severe thunderstorm warning in 1992

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.