Alert archive / Florida / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 3, NWS Miami, FL

July 4, 1992Miami-Dade County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Jul 4, 1992, 7:03 PM EDT for Miami-Dade County, Florida. It was in force for 42 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jul 4, 1992, 7:03 PM EDT (23:03 UTC)
Expired
Jul 4, 1992, 7:45 PM EDT
In force
42 min
Issued by
NWS Miami, FL
Area
Whole counties

County Miami-Dade County, FL

What was reported inside it

TimeReportWhereRemark
Jul 4, 7:43 PM EDTThunderstorm Wind 0Miami-Dade, FL

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Key West, FL (KEYW), launched 12:00Z, 11.1 hours before the alert went out and 169 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, Key West, FL at 12:00Z on 1992-07-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Key West, FL at 12:00Z on 1992-07-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
NaN m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
8 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 KMIA 042304
SVRMIA
FLC025-042345-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
703 PM EDT SAT JUL 4 1992
 
THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  745 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTHEAST FLORIDA
 
   ...SOUTHERN DADE COUNTY
 
AND THE ADJACENT COASTAL WATERS
 
 
MIAMI RADAR IS CONTINUING TO DETECT SEVERE THUNDERSTORMS OVER SOUTHERN
DADE COUNTY. HIGH WINDS ASSOCIATED WITH THESE THUNDERSTORMS DOWNED
POWERLINES AND TREES IN SOUTHERN DADE COUNTY BETWEEN 640 AND 650 PM
EDT.
 
 
 
DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...AND DEADLY LIGHTNING
ARE ALL POSSIBLE IN A SEVERE THUNDERSTORM. SEEK SHELTER IN A STRONG
BUILDING. STAY AWAY FROM WINDOWS. DO NOT USE TELEPHONES OR
ELECTRICAL APPLIANCES. A MOBILE HOME IS NOT A SAFE REFUGE FROM A
SEVERE THUNDERSTORM...MOVE TO A MORE SUBSTANTIAL BUILDING.

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 4, 4:46 PM EDT, 2 hours 17 minutes before
FLZ015>023-042145-
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE MIAMI FL
445 PM EDT SAT JUL 4 1992

...STRONG THUNDERSTORMS WERE BUILDING OVER EASTERN BROWARD COUNTY...

AT 433 PM RADAR INDICATED CLUSTERS OF THUNDERSTORMS WITH VERY HEAVY RAIN
FORMING OVER THE EASTERN THIRD OF BROWARD COUNTY. THESE THUNDERSTORMS EXTENDED
FROM GOLDEN BEACH IN NORTHERN DADE COUNTY NORTH TO INTERIOR PALM BEACH COUNTY
BETWEEN JUPITER AND THE EASTERN SHORE OF LAKE OKEECHOBEE. MOTORISTS AND OTHER
CONCERNED INTERESTS IN EASTERN BROWARD AND NORTHEASTERN DADE COUNTIES SHOULD BE
ALERT FOR THESE THUNDERSTORMS AS THEY WILL SHARPLY REDUCE VISIBILITIES IN
PERIODS OF VERY HEAVY RAINS...BE ACCOMPANIED BY FREQUENT LIGHTNING STRIKES...
STRONG GUSTY WINDS AND CAUSE PONDING OF WATER ON POOR DRAINAGE ROADWAYS.
DURING THE NEXT FEW HOURS.

ELSEWHERE SCATTERED SHOWERS AND THUNDERSTORMS WERE OVER THE WEST CENTRAL AREAS
OF THE STATE FROM CAPE ROMANO NORTHEAST TO THE WESTERN SHORE OF LAKE OKEECHOBEE
AND OVER PUNTA GORDA.

THESE SHOWERS AND THUNDERSTORMS WERE MOVING SOUTH AT ABOUT 15 MILE AN HOUR.

OTHER SCATTERED SHOWERS AND THUNDERSTORMS...SOME WITH VERY HEAVY RAIN...WERE
OVER THE ATLANTIC FROM THE BIMINI ISLANDS TO THE BERRY ISLANDS AND ANDROS
ISLAND AND BEYOND 125 MILES FROM THE MIAMI RADAR.

THIS AREA OF SHOWERS AND THUNDERSTORMS WERE MOVING SOUTHWEST AT 10 TO 15
MILES AN HOUR.

THE MAXIMUM PRECIPITATION TOP WAS 47 THOUSAND FEET ...v LOCATED OVER THE
CITY OF FORT LAUDERDALE.
Special weather statement, Jul 4, 5:13 PM EDT, 1 hour 50 minutes before
FLZ020-019-042315-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WEST PALM BEACH FL
513 PM EDT SAT JUL 4 1992

AT 5:10 PM EDT NATIONAL WEATHER SERVICE RADAR INDICATED VERY STRONG
THUNDERSTORMS OVER CERNTRAL PALM BEACH COUNTY IN THE AREA OF
WELLINGTON. THESE THUNDERSTORMS WERE MOVING TO THE SOUTHEAST AT 10
TO 15 MILES AN HOUR.

THESE THUNDERSTORMS MAY PRODUCE STRONG GUSTY WINDS...FREQUENT
DANGEROUS CLOUD TO GROUND LIGHTNING...VERY HEAVY DOWNPOURS...REDUCED
VISIBILITIES AND THE PONDING OF WATER ON ROADWAYS.

RESIDENTS AND MOTORISTS TRAVELING IN CENTRAL AND EASTERN PALM BEACH
COUNTY SHOULD BE ALERT TO THESE THUNDERSTORM OVER THE NEXT ONE TO
TWO HOURS. IF THREATENING WEATHER APPROACHES YOUR LOCATION SEEK A
SAFE SHELTER IMMEDIATELY. MOTORISTS ARE URGED TO USE CAUTION AND
SLOW DOWN AND ALLOW EXTRA TIME TO REACH THEIR DESTINATIONS SAFELY.

STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL TV OR RADIO STATION
FOR FURTHER STATEMENTS AND OR WARNINGS SHOULD THEY BECOME NECESSARY.

NNNN
Special weather statement, Jul 4, 5:46 PM EDT, 1 hour 17 minutes before
FLZ015>023-042245-
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE MIAMI FL
545 PM EDT SAT JUL 4 1992

...STRONG THUNDERSTORMS CONTINUE BUILDING OVER BOTH GULF AND ATLANTIC COASTS
    OF SOUTHERN PENINSULA...

AT 531 PM RADAR INDICATED A CLUSTER OF STRONG THUNDERSTORMS OVER COLLIER COUNTY
ABOUT 10 MILES EAST OF NAPLES... OTHER STRONG THUNDERSTORMS WERE FORMING OVER
THE PENINSULA NORTH OF A EVERGLADES CITY/CITY OF MIAMI LINE... RESIDENTS AND
MOTORISTS ON SOUTH FLORIDA ROADWAYS CAN EXPECT SHARPLY REDUCED VISIBILITIES IN
PERIODS OF LOCALLY HEAVY RAINFALL...FREQUENT CLOUD TO GROUND LIGHTNING STRIKES
AND SMALL HAIL IS ALSO POSSILBE WITH THE STRONGER THUNDERSTORMS...ROADWAYS
COULD ALSO ACCUMULATE POCKETS OF STANDING WATER IN LOW LYING POOR DRAINAGE
LOCATIONS...STRONG GUSTY WINDS WILL ALSO BE ACCOMPANING THESE THUNDERSTORMS.

ELSEWHERE...SCATTERED SHOWERS AND THUNDERSTORMS CONTINUED OVER THE ATLANTIC
FROM THE BIMINI ISLANDS EAST TO BEYOND 125 MILES FROM THE MIAMI RADAR

THUNDERSTORM MOVEMENT WAS SOUTH AT 10 TO 15 MILES AN HOUR.

THE MAXIMUM PRECIPITATION TOP WAS 57 THOUSAND FEET ... LOCATED OVER COLLIER
COUNTY 10 MILES EAST OF NAPLES.
Special weather statement, Jul 4, 6:41 PM EDT, 22 minutes before
FLZ015>023-042340-
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE MIAMI FL
640 PM EDT SAT JUL 4 1992

...A SEVERE THUNDERSTORM WARNING IS IN EFFECT FOR SOUTHEAST DADE COUNTY UNTIL
645 PM... ANOTHER ONE IS IN EFFECT FOR COLLIER COUNTY UNTIL 715 PM...

    ...STRONG THUNDERSTORMS CONTINUE TO POUND THE SOUTHERN PENINSULA...

AT 630 PM RADAR INDICATED NUMEROUS CLUSTERS OF STRONG THUNDERSTORMS OVER THE
SOUTHERN PENINSULA SOUTH OF A JUPIER / FORT MYERS LINE. THE STRONGEST WERE OVER
COLLIER COUNTY JUST EAST OF NAPLES...AND OVER THE WESTERN SECTIONS OF BOTH DADE
AND BROWARD COUNTIES. MOTORISTS ON SOUTH FLORIDA ROADWAYS CAN EXPECT SHARPLY
REDUCED VISIBILITIES IN PERIODS OF LOCALLY HEAVY RAINFALL...FREQUENT CLOUD TO
GROUND LIGHTNING STRIKES AND SMALL HAIL IS POSSIBLE WITH THESE THUNDERSTORMS...
ROADWAYS WILL ALSO ACCUMULATE POCKETS OF STANDING WATER IN LOW LYING POOR
DRAINAGE LOCATIONS...STRONG GUSTY WINDS WILL ACCOMPANY THESE THUNDERSTORMS AS
THEY MOVE SOUTH DOWN THE PENINSULA AT 15 MILES AN HOUR.

ELSEWHERE SCATTERED SHOWERS AND THUNDERSTORMS CONTINUED OVER THE ATLANTIC
FROM THE BIMINI ISLANDS EAST TO BEYOND 125 MILES FROM THE MIAMI RADAR.

THUNDERSTORM MOVEMENT WAS SOUTH AT 15 MILES AN HOUR.

THE MAXIMUM PRECIPITATION TOP WAS 54 THOUSAND FEET ... LOCATED OVER COLLIER
COUNTY 10 MILES EAST OF NAPLES...OTHERS WORTH NOTING WERE 53 AND 52 THOUSAND
OVER EXTREME WESTERN DADE AND BROWARD COUNTIES RESPECTIVELY.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 4, 5:50 PM EDTSevere Thunderstorm WarningMFLMiami-Dade55 min
Jul 4, 6:20 PM EDTSevere Thunderstorm WarningMFLCollier55 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.