Alert archive / Florida / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 14, NWS Miami, FL

February 20, 1995Miami-Dade County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Feb 20, 1995, 3:23 PM EST for Miami-Dade County, Florida. It was in force for 52 min.

The area

The counties it named.

The facts

Issued
Feb 20, 1995, 3:23 PM EST (20:23 UTC)
Expired
Feb 20, 1995, 4:15 PM EST
In force
52 min
Issued by
NWS Miami, FL
Area
Whole counties

County Miami-Dade County, FL

The nearest sounding before it

Key West, FL (KEYW), launched 12:00Z, 8.4 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 1995-02-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 31 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 1995-02-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 71 square meters per square second.19395878Sfc1 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
31 J/kg
Mixed-layer CIN
-59 J/kg
Mixed-layer LCL
642 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
71 m²/s²
0-3 km storm-relative helicity
110 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMIA 202024 RRA
SVRMIA
FLC025-202115-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
323 PM EST MON FEB 20 1995
 
THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  415 PM EST
FOR PEOPLE IN THE FOLLOWING LOCATION......
 
IN SOUTHEAST FLORIDA
 
   ...EASTERN DADE COUNTY
 
AND THE ADJACENT COASTAL WATERS
 
AT 320 PM...DOPPLER RADAR INDICATED THUNDERSTORMS WITH WINDS
BETWEEN 50 AND 60 MPH APPROACHING HIALEAH AND OPALOCKA AREAS.
 
 
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 FR"OM 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, Feb 20, 12:39 PM EST, 2 hours 44 minutes before
FLZ072-071-074-073-069-070-063-066-068-067-201845-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
1239 PM EST MON FEB 20 1995

AT 1230 PM...THE LEADING EDGE OF A LARGE AREA OF RAIN WITH EMBEDDED
THUNDERSTORMS EXTENDED FROM JUPITER TO NAPLES. A STRONG THUNDERSTORM
WAS LOCATED IN THE SOUTHWEST END ABOUT 20 MILES NORTHWEST OF NAPLES.
MOVEMENT WAS EAST AT 20 MPH.

PEOPLE IN WESTERN COLLIER AND HENDRY COUNTIES CAN EXPECT STRONG
GUSTY WINDS...POSSIBLY SOME HAIL AND DANGEROUS LIGHTNING BETWEEN
1 PM AND 3 PM. IN ADDITION...SOME STRONG THUNDERSTORMS WILL
DEVELOPE OVER OTHER PARTS OF SOUTH FLORIDA IN THE NEXT HOUR.
Special weather statement, Feb 20, 12:40 PM EST, 2 hours 43 minutes before
FLZ072-071-074-073-069-070-063-066-068-067-201845-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
1239 PM EST MON FEB 20 1995

AT 1230 PM...THE LEADING EDGE OF A LARGE AREA OF RAIN WITH EMBEDDED
THUNDERSTORMS EXTENDED FROM JUPITER TO NAPLES. A STRONG THUNDERSTORM
WAS LOCATED IN THE SOUTHWEST END ABOUT 20 MILES NORTHWEST OF NAPLES.
MOVEMENT WAS EAST AT 20 MPH.

PEOPLE IN WESTERN COLLIER AND HENDRY COUNTIES CAN EXPECT STRONG
GUSTY W:INDS...POSSIBLY SOME HAIL AND DANGEROUS LIGHTNING BETWEEN
1 PM AND 3 PM. IN ADDITION...SOME STRONG THUNDERSTORMS WILL
DEVELOPE OVER OTHER PARTS OF SOUTH FLORIDA IN THE NEXT HOUR.

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 20, 12:53 PM ESTSevere Thunderstorm WarningMFLCollier67 min
Feb 20, 2:12 PM ESTSevere Thunderstorm WarningMFLBroward, Collier63 min
Feb 20, 2:30 PM ESTTornado WarningMFLBroward60 min

Nearby

Severe Thunderstorm Warnings in Florida, 1995Every severe thunderstorm warning in 1995

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.