Alert archive / Florida / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 21, NWS Miami, FL

June 22, 1994Broward County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Jun 22, 1994, 4:42 PM EDT for Broward County, Florida. It was in force for 48 min.

The area

The counties it named.

The facts

Issued: Jun 22, 1994, 4:42 PM EDT (20:42 UTC)
Expired: Jun 22, 1994, 5:30 PM EDT
In force: 48 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, 8.7 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-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: 1423 J/kg
Mixed-layer CIN: -36 J/kg
Mixed-layer LCL: 1092 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -6 m²/s²
0-3 km storm-relative helicity: 9 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 
WUUS1 KMIA 222044
SVRMFL
FLC011-FLZ502-222130-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE MIAMI FL
442 PM EDT WED JUN 22 1994
 
THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
EFFECTIVE UNTIL  530 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION......
 
IN SOUTHEAST FLORIDA
 
 
   ...EASTERN BROWARD COUNTY...INCLUDING THE METROPOLITAN AREAS OF FT
LAUDERDALE...
 
  AND FOR BOATERS ON THE COASTAL WATERS FROM
 
   ...DEERFIELD BEACH  TO  HALLANDALE
 
AT 440 PM EDT MIAMI DOPPLER RADAR CONTINUED INDICATED A SEVERE
THUNDERSTORM IN EASTERN BROWARD COUNTY NEAR HOLLYWOOD...WITH OTHER
STRONG THUNDERSTORMS FROM DAVIE TO NEAR DEERFIELD BEACH. THE
THUNDERSTORMS WERE MOVING NORTHEAST AROUND 20 MILES AN HOUR.
 
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.
 
THUNDERSTORMS THREATEN BOATER SAFETY WITH GUSTY WINDS IN EXCESS OF
35 KNOTS...ROUGH SEAS AND DEADLY LIGHTNING.  YOUR BEST COURSE OF
ACTION IS TO SEEK SAFE HARBOR...BUT IF YOU ARE CAUGHT ON THE OPEN
WATER...STAY BELOW DECK OR KEEP A LOW PROFILE AND KEEP AWAY FROM
UNGROUNDED METAL OBJECTS. MAKE SURE YOU AND ALL YOUR CREW ARE
 
IF THREATENING WEATHER IS SIGHTED...TAKE SHELTER...THEN REPORT THE
SEVERE WEATHER TO YOUR LOCAL LAW ENFORCEMENT AGENCY.

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 22, 3:40 PM EDT	Severe Thunderstorm Warning	MFL	Miami-Dade	65 min
Jun 22, 4:19 PM EDT	Severe Thunderstorm Warning	MFL	Broward	26 min

Nearby

Severe Thunderstorm Warnings in Florida, 1994 Every 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.