Alert archive / Florida / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 61, NWS Melbourne, FL

June 30, 1992Brevard County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Jun 30, 1992, 1:09 PM EDT for Brevard County, Florida. It was in force for 66 min.

The area

The counties it named.

The facts

Issued
Jun 30, 1992, 1:09 PM EDT (17:09 UTC)
Expired
Jun 30, 1992, 2:15 PM EDT
In force
66 min
Issued by
NWS Melbourne, FL
Area
Whole counties

County Brevard County, FL

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 5.2 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.

Skew-T log-pSkew-T log-p diagram, Tampa Bay, FL at 12:00Z on 1992-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1757 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, Tampa Bay, FL at 12:00Z on 1992-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 93 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
1757 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
593 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
93 m²/s²
0-3 km storm-relative helicity
81 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMLB 301710
SVRMLB
FLC009-301815-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
109 PM EDT TUE JUN 30 1992
 
THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
EFFECTIVE UNTIL  215 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN EAST CENTRAL FLORIDA
 
   ...SOUTH AND CENTRAL BREVARD COUNTY
 
  AND FOR MARINE INTERESTS ON THE COASTAL WATERS FROM...
 
   ...COCOA BEACH  TO  SEBASTIAN INLET
 
AT 108 PM WINDS GUSTED TO OVER 55 MPH AT THE WEATHER SEVICE OFFICE IN
MELBOURNE. THE THUNDERSTORM PRODUCING THESE WINDS AND VERY HEAVY
RAIN WILL MOVE ACROSS CENTRAL AND SOUTRHERN BREVARD COUNTY AND
THE ADJACENT COADSTAL WATERS DURING THE NEXT HOUR.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 58
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF A STRONG BUILDING. HEAVY RAINS FLOOD ROADS QUICKLY SO
DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD.
 
BOATERS AND MARINERS IN THE PATH OF THIS STORM SHOULD TAKE
NECESSARY PRECAUTIONS. SEEK SAFE HARBOR IMMEDIATELY IF POSSIBLE.

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, Jun 30, 12:33 PM EDT, 36 minutes before
FLZ017-011-016-012-009-301730-

SPECIAL EAST CENTRAL FLORIDA WEATHER UPDATE
NATIONAL WEATHER SERVICE MELBOURNE FL
1232 PM EDT TUE JUN 30 1992

...THUNDERSTORMS WITH VERY HEAVY RAIN FROM LEESBURG TO
WINTERGARDEN...

AT 1230 PM AN AREA OF THUNDERSTORMS PRODUCING VERY HEAVY RAIN
WAS FROM NEAR LEESBURG TO LAKE APOPKA TO WINTERGARDEN. THESE
THUNDERSTORMS WERE MOVING NORTHEAST AT 15 MPH AND WILL MOVE ACROSS
NORTHERN LAKE COUNTY AND THE NORTHWEST CORNER OF ORANGE COUNTY
THROUGH 2 PM. PONDING OF WATER ON ROADWAYS MAY OCCURR WITH THESE
THUNDERSTORMS.

ELSEWHERE SCATTERED THUNDERSTORMS WERE FROM GAINESVILLE TO PALATKA
AND CAPE CANAVERAL. THUNDERSTORMS WERE ALSO FROM LAKE KISSIMMEE TO
KENANSVILLE. ALL THE ACTIVITY WAS MOVING NORTHEAST AT 15 MPH.

THROUGH EARLY AFTERNOON SHOWERS AND THUNDERSTORMS WILL INCREASE
OVER EAST CENTRAL FLORIDA WITH THE POSSIBILITY OF VERY HEAVY
RAINFALL WITH SOME OF THE STORMS.

RES

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 30, 2:02 PM EDTSevere Thunderstorm WarningMLBBrevard58 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.