Alert archive / Florida / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 34, NWS Miami, FL

August 7, 1994Broward County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Aug 7, 1994, 6:32 PM EDT for Broward County, Florida. It was in force for 58 min.

The area

The counties it named.

The facts

Issued
Aug 7, 1994, 6:32 PM EDT (22:32 UTC)
Expired
Aug 7, 1994, 7:30 PM EDT
In force
58 min
Issued by
NWS Miami, FL
Area
Whole counties

County Broward County, FL

The nearest sounding before it

Key West, FL (KEYW), launched 12:00Z, 10.5 hours before the alert went out and 218 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 1994-08-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2133 joules per kilogram.LCLEL10008507005003002001001 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 1994-08-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 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
2133 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
828 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
28 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 072234 RRA
SVRMIA
FLC011-072330-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
632 PM EDT SUN AUG 7 1994
 
THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  730 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION......
 
IN SOUTHEAST FLORIDA
 
   ...NORTHERN BROWARD COUNTY
 
AND THE ADJACENT COASTAL WATERS
 
...A SEVERE THUNDERSTORM IS INDICATED OVER NORTHERN BROWARD COUNTY...
 
AT 630 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT
AT THUNDERSTORM OVER NORTH BROWARD COUNTY WAS ABOUT TO BECOME SEVERE.
 
THIS STORM WAS CENTERED OVER THE CORAL SPRINGS...MARGATE...PARKLAND
AREA AND SURROUNDING NEIGHBORHOODS...THE STORM WAS MOVING EAST TOWARD
POMPANO BEACH AND MAY AFFECT COASTAL AREAS OF BROWARD.
 
 
 
 
DAMAGING WIND IN EXCESS OF 55 MPH...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.

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, Aug 7, 4:58 PM EDT, 1 hour 34 minutes before
FLZ068-072145-
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE WEST PALM BEACH FL
445 PM EDT SUN AUG 07 1994

.....STRONG THUNDERSTORM OVER SOUTHWESTERN PALM BEACH COUNTY.....

AT 430 PM EDT WEATHER SERVICE RADAR INDICATED A STRONG THUNDERSTORM
CONTAINING VERY HEAVY RAIN...IN SOUTHWESTERN PALM BEACH COUNTY.
THIS THUNDERSTORM CONTAINS VERY HEAVY RAIN AND POSSIBLY SOME SMALL
HAIL. WIND GUSTS UP TO 40 MILES AN HOUR ARE ALSO POSSIBLE.

RESIDENTS OF SOUTHERN AND CENTRAL PALM BEACH COUNTY SHOULD BE ALERT
OF THREATENING WEATHER CONDITIONS AND BE PREPARED TO ACT IF A WARNING
IS ISSUED DURING THE NEXT HOUR. THIS STORM WAS MOVING NORTHEAST AT 10
MILES AN HOUR.

ELSEWHERE ON THE PENINSULA...SHOWERS AND THUNDERSTORMS WERE SOUTH AND
OF A LINE FROM THE CAPE TO TAMPA AND IN THE ATLANTIC FROM 80 MILES
NORTH OF THE BAHAMAS TO CENTRAL ANDROS ISLAND.

LITTLE MOVEMENT WAS INDICATED.
Special weather statement, Aug 7, 5:35 PM EDT, 57 minutes before
FLZ068-072245-
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE WEST PALM BEACH FL
535 PM EDT SUN AUG 07 1994

.....STRONG THUNDERSTORMS IN SOUTHERN AND WESTERN PALM BEACH COUNTY.....

AT 530 PM EDT WEATHER SERVICE RADAR INDICATED STRONG THUNDERSTORMS
CONTAINING VERY HEAVY RAIN...ONE IN SOUTHERN AND THE OTHER IN WESTERN
PALM BEACH COUNTY. THESE STORMS CONTAIN VERY HEAVY RAIN AND POSSIBLY
SOME SMALL HAIL. WIND GUSTS UP TO 40 MILES AN HOUR ARE ALSO POSSIBLE.

RESIDENTS OF PALM BEACH COUNTY SHOULD BE ALERT FOR THREATENING WEATHER
CONDITIONS AND BE PREPARED TO ACT IF A WARNING IS ISSUED DURING THE
NEXT HOUR. THESE STORMS WERE MOVING NORTHEAST AT 10 MILES AN HOUR.

ELSEWHERE...SHOWERS AND THUNDERSTORMS WERE SCATTERED SOUTH OF A LINE
FROM THE CAPE TO TAMPA AND IN THE ATLANTIC FROM 30 MILES NORTH OF
GREAT ABACO ISLAND SOUTH TO WESTERN ANDROS ISLAND.

LITTLE MOVEMENT WAS INDICATED.
Special weather statement, Aug 7, 5:43 PM EDT, 49 minutes before
FLZ068-072245-
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE WEST PALM BEACH FL
535 PM EDT SUN AUG 07 1994

.....STRONG THUNDERSTORMS IN SOUTHERN AND WESTERN PALM BEACH COUNTY.....

AT 530 PM EDT WEATHER SERVICE RADAR INDICATED STRONG THUNDERSTORMS
CONTAINING VERY HEAVY RAIN...ONE IN SOUTHERN AND THE OTHER IN WESTERN
PALM BEACH COUNTY. THESE STORMS CONTAIN VERY HEAVY RAIN AND POSSIBLY
SOME SMALL HAIL. WIND GUSTS UP TO 40 MILES AN HOUR ARE ALSO POSSIBLE.

RESIDENTS OF PALM BEACH COUNTY SHOULD BE ALERT FOR THREATENING WEATHER
CONDITIONS AND BE PREPARED TO ACT IF A WARNING IS ISSUED DURING THE
NEXT HOUR. THESE STORMS WERE MOVING NORTHEAST AT 10 MILES AN HOUR.T

ELSEWHERE...SHOWERS AND THUNDERSTORMS WERE SCATTERED SOUTH OF A LINE
FROM THE CAPE TO TAMPA AND IN THE ATLANTIC FROM 30 MILES NORTH OF
GREAT ABACO ISLAND SOUTH TO WESTERN ANDROS ISLAND.

LITTLE MOVEMENT WAS INDICATED.
Special weather statement, Aug 7, 6:01 PM EDT, 31 minutes before
FLZ072-502-080000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
601 PM EDT SUN AUG 7 1994

...A STRONG THUNDERSTORM WILL BE AFFECTING NORTHEAST BROWARD COUNTY...

AT 600 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR IN MIAMI
INDICATED A STRONG THUNDERSTORM MOVING THROUGH THE MARGATE AND CORAL
SPRINGS AREA OF BROWARD. THIS STORM WILL BE INCREASING SOME IN
STRENGTH AS IT MOVES EAST TOWARD THE POMPANO BEACH AREA BY 630 PM.

PEOPLE IN THESE AREAS AS WELL AS BOATERS ALONG THE NORTH BROWARD COAST
SHOULD BE ON THE ALERT FOR  FREQUENT DANGEROUS LIGHTNING...GUSTY
WINDS...POSSIBLE SMALL HAIL...AND BRIEF DOWNPOURS.
Special weather statement, Aug 7, 6:02 PM EDT, 30 minutes before
FLZ072-502-080000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
601 PM EDT SUN AUG 7 1994

...A STRONG THUNDERSTORM WILL BE AFFECTING NORTHEAST BROWARD COUNTY...

AT 600 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR IN MIAMI
INDICATED A STRONG THUNDERSTORM MOVING THROUGH THE MARGATE AND CORAL
SPRINGS AREA OF BROWARD. THIS STORM WILL BE INCREASING SOME IN
STRENGTH AS IT MOVES EAST TOWARD THE POMPANO BEACH AREA BY 630 PM.

PEO|PLE IN THESE AREAS AS WELL AS BOATERS ALONG THE NORTH BROWARD COAST
SHOULD BE ON THE ALERT FOR  FREQUENT DANGEROUS LIGHTNING...GUSTY
WINDS...POSSIBLE SMALL HAIL...AND BRIEF DOWNPOURS.
Special weather statement, Aug 7, 6:25 PM EDT, 7 minutes before
FLZ072-502-080000-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
601 PM EDT SUN AUG 7 1994

...A STRONG THUNDERSTORM WILL BE AFFECTING NORTHEAST BROWARD COUNTY...

AT 600 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR IN MIAMI
INDICATED A STRONG THUNDERSTORM MOVING THROUGH THE MARGATE AND CORAL
SPRINGS AREA OF BROWARD. THIS STORM WILL BE INCREASING SOME IN
STRENGTH AS IT MOVES EAST TOWARD THE POMPANO BEACH AREA BY 630 PM.

PEOPLE IN THESE AREAS AS WELL AS BOATERS ALONG THE NORTH BROWARD COAST
SHOULD BE ON THE ALERT FOR  FREQUENT DANGEROUS LIGHTNING...GUSTY
WINDS...POSSIBLE SMALL HAIL...AND BRIEF DOWNPOURS.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 7, 7:45 PM EDTSevere Thunderstorm WarningMFLBroward, Miami-Dade60 min

Nearby

Severe Thunderstorm Warnings in Florida, 1994Every severe thunderstorm warning in 1994

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.