Alert archive / Florida / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 16, NWS Miami, FL

June 10, 1994Miami-Dade County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Jun 10, 1994, 6:38 PM EDT for Miami-Dade County, Florida. It was in force for 67 min.

The area

The counties it named.

The facts

Issued
Jun 10, 1994, 6:38 PM EDT (22:38 UTC)
Expired
Jun 10, 1994, 7:45 PM EDT
In force
67 min
Issued by
NWS Miami, FL
Area
Whole counties

County Miami-Dade County, FL

The radar

The Miami radar (KAMX), 9 km from the middle of the area, began a volume at 22:42 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Key West, FL (KEYW), launched 12:00Z, 10.6 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 1994-06-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1603 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, Key West, FL at 12:00Z on 1994-06-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 7 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
1603 J/kg
Mixed-layer CIN
-19 J/kg
Mixed-layer LCL
1050 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
7 m²/s²
0-3 km storm-relative helicity
24 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 102238
SVRMFL
FLC025-102345-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
638 PM EDT FRI JUN 10 1994
 
THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  745 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION......
 
IN SOUTHEAST FLORIDA
 
   ...NORTHEASTERN DADE COUNTY
 
NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATES A SEVERE THUNDERSTORM
HAS FORMED 3 TO 5 MILES WEST OF MIAMI SPRINGS EXTENDING WEST TO THE
FLORIDA TURNPIKE. THIS PARTICULAR THUNDERSTORM IS MOVING TOWARD THE
SOUTH AT 15 MPH.
 
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.
 
IF THREATENING WEATHER IS SIGHTED...TAKE SHELTER...THEN REPORT THE
SEVERE WEATHER TO YOUR LOCAL LAW ENFORCEMENT AGENCY.
 
 
 
&

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 10, 5:20 PM EDT, 1 hour 18 minutes before
FLZ072-074-073-102220-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
520 PM EDT FRI JUN 10 1994

NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATES RAPIDLY DEVELOPING
THUNDERSTORMS HAD BECOME SCATTERED ACROSS SOUTH FLORIDA DURING THE
LAST 15 MINUTES. THE STRONGEST OF THESE THUNDERSTORMS WERE LOCATED
JUST NORTH OF PEMBROKE PINES IN SOUTHEASTERN BROWARD COUNTY AND
EXTENDING SOUTHWARD OVER THE WESTERN PARTS OF METROPOLITAN MIAMI
ALONG THE PALMETTO EXPRESSWAY TO WEST KENDALL DRIVE.

THESE THUNDERSTORMS WERE FORMING TO THE EAST OF THE SEABREEZE
FRONT AND ARE NOT EXPECTED TO INCREASE VERY RAPIDLY IN EITHER
THEIR COVERAGES OR INTENSITIES DURING THE NEXT HOUR. MOVEMENT
OF THESE THUNDERSTORMS IS TOWARD THE SOUTH AT 10 MPH.

THE STRONGEST THUNDERSTORMS ARE LOCATED OVER EXTREME WESTERN
DADE COUNTY OVER A 5 MILE WIDE AREA EXTENDING 5 TO 14 MILES
SOUTH OF THE 40 MILE BEND ON TAMIAMI TRAIL. RADAR INDICATED
THESE THUNDERSTORMS CONTAINED HAIL WITH INDICATED STORM TOPS TO 48
THOUSAND FEET. THEIR MOVEMENT WAS TOWARD THE SOUTHWEST AT 15 MPH.

ADDITIONAL STATEMENTS OR POSSIBLE WARNINGS MAY BE REQUIRED
DURING THE NEXT 2 HOURS.

&
Special weather statement, Jun 10, 5:24 PM EDT, 1 hour 14 minutes before
FLZ072-074-073-102220-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
520 PM EDT FRI JUN 10 1994

NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATES RAPIDLY DEVELOPING
THUNDERSTORMS HAD BECOME SCATTERED ACROSS SOUTH FLORIDA DURING THE
LAST 15 MINUTES. THE STRONGEST OF THESE THUNDERSTORMS WERE LOCATED
JUST NORTH OF PEMBROKE PINES IN SOUTHEASTERN BROWARD COUNTY AND
EXTENDING SOUTHWARD OVER THE WESTERN PARTS OF METROPOLITAN MIAMI
ALONG THE PALMETTO EXPRESSWAY TO WEST KENDALL DRIVE.

THESE THUNDERSTORMS WERE FORMING TO THE EAST OF THE SEABREEZE
FRONT AND ARE NOT EXPECTED TO INCREASE VERY RAPIDLY IN EITHER
THEIR COVERAGES OR INTENSITIES DURING THE NEXT HOUR. MOVEMENT
OF THESE THUNDERSTORMS IS TOWARD THE SOUTH AT 10 MPH.

THE STRONGEST THUNDERSTORMS ARE LOCATED OVER EXTREME WESTERN
DADE COUNTY OVER A 5 MILE WIDE AREA EXTENDING 5 TO 14 MILES
SOUTH OF THE 40 MILE BEND ON TAMIAMI TRAIL. RADAR INDICATED
THESE THUNDERSTORMS CON8TAINED HAIL WITH INDICATED STORM TOPS TO 48
THOUSAND FEET. THEIR MOVEMENT WAS TOWARD THE SOUTHWEST AT 15 MPH.

ADDITIONAL STATEMENTS OR POSSIBLE WARNINGS MAY BE REQUIRED
DURING THE NEXT 2 HOURS.

&
Special weather statement, Jun 10, 6:09 PM EDT, 29 minutes before
FLZ072-071-074-102315-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
609 PM EDT FRI JUN 10 1994

NATIONAL WEATHER SERVICE DOPPLER RADAR IN MIAMI INDICATES STRONG
THUNDERSTORMS HAVE INCREASED IN COVERAGE AND ARE SPREADING OVER MUCH
OF EASTERN BROWARD COUNTY AND NORTHEAST DADE COUNTY DURING THE PAST
30 MINUTES. THESE THUNDERSTORMS ARE MOVING TOWARD THE SOUTHEAST AT 15
MPH AND CONTAIN VERY HEAVY RAINS...POSSIBLE HAIL...ALONG WITH
POSSIBLY STRONG WIND GUSTS FOR BRIEF PERIODS.

MOST OF THE THUNDERSTORM ACTIVITY IS SCATTERED TO OCCASIONALLY
NUMEROUS AND COVERING AN AREA FROM THE NORTHWEST PART OF THE BROWARD
COUNTY EXTENDING SOUTHEASTWARD ACROSS ANDYTOWN...DAVIE...AND PEMBROKE
PINES AS WELL AS INTO NORTHEASERN DADE COUNTY AROUND OPALOCKA
AIRPORT...CAROL CITY AND MIAMI GARDENS.

DURING THE NEXT HOUR THIS ACITIVITY IS EXPECTED TO CONTINUE TO
INCREASE IN INTENSITY AS IT SPREADS SOUTHWARD INTO DADE COUNTY
OVER THE COMMUNITIES OF HIALEAH...MIAMI SPRINGS...THE INTERNATIONAL
AIRPORT AND WEST KENDALL.

THE PUBLIC IS ADVISED TO REMAIN ALERT FOR ADDITONAL STATEMENTS
OR WARNINGS WHICH MAY BE ISSUED. TO REPORT SEVERE WEATHER CONTACT
YOUR NEAREST LAW ENFORCEMENT AGENCY.

&
Special weather statement, Jun 10, 6:13 PM EDT, 25 minutes before
FLZ072-071-074-102315-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
609 PM EDT FRI JUN 10 1994

NATIONAL WEATHER SERVICE DOPPLER RADAR IN MIAMI INDICATES STRONG
THUNDERSTORMS HAVE INCREASED IN COVERAGE AND ARE SPREADING OVER MUCH
OF EASTERN BROWARD COUNTY AND NORTHEAST DADE COUNTY DURING THE PAST
30 MINUTES. THESE THUNDERSTORMS ARE MOVING TOWARD THE SOUTHEAST AT 15
MPH AND CONTAIN VERY HEAVY RAINS...POSSIBLE HAIL...ALONG WITH
POSSIBLY STRONG WIND GUSTS FOR BRIEF PERIODS.

MOST OF THE THUNDERSTORM ACTIVITY IS SCATTERED TO OCCASIONALLY
NUMEROUS AND COVERING AN AREA FROM THE NORTHWEST PART OF THE BROWARD
COUNTY EXTENDING SOUTHEASTWARD ACROSS ANDYTOWN...DAVIE...AND PEMBROKE
PINES AS WELL AS INTO NORTHEASERN DADE COUNTY AROUND OPALOCKA
AIRPORT...CAROL CITY AND MIAMI GARDENS.

DURING THE NEXT HOUR THIS ACITIVITY IS EXPECTED TO CONTINUE TO
INCREASE IN INTENSITY AS IT SPREADS SOUTHWARD INTO DADE COUNTY
OVER THE COMMUNITIES OF HIALEAH...MIAMI SPRINGS...THE INTERNATIONAL
AIRPORT AND WEST KENDALL.

THE PUBLIC IS ADVISED TO REMAIN ALERT FOR ADDITONAL STATEMENTS
OR WARNINGS WHICH MAY BE ISSUED. TO REPORT SEVERE WEATHER CONTACT
YOUR NEAREST LAW ENFORCEMENT AGENCY.

&

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; radar from the NEXRAD Level II archive.