Alert archive / Florida / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 28, NWS Miami, FL

July 15, 1994Hendry County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Jul 15, 1994, 4:58 PM EDT for Hendry County, Florida. It was in force for 32 min.

The area

The counties it named.

The facts

Issued
Jul 15, 1994, 4:58 PM EDT (20:58 UTC)
Expired
Jul 15, 1994, 5:30 PM EDT
In force
32 min
Issued by
NWS Miami, FL
Area
Whole counties

County Hendry County, FL

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 9.0 hours before the alert went out and 177 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, Tampa Bay, FL at 12:00Z on 1994-07-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1642 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, Tampa Bay, FL at 12:00Z on 1994-07-15The 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
1642 J/kg
Mixed-layer CIN
-37 J/kg
Mixed-layer LCL
986 m above ground
0-6 km bulk shear
2 kt
0-1 km storm-relative helicity
-7 m²/s²
0-3 km storm-relative helicity
-2 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 152101
SVRMIA
FLC051-152130-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
458 PM EDT FRI JUL 15 1994
 
THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  530 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION......
 
IN SOUTH FLORIDA
 
   ...SOUTHEASTERN HENDRY COUNTY
 
MIAMI DOPPLER RADAR INDICATES A SEVERE THUNDERSTORM HAS FORMED OVER
EXTREME SOUTHEAST HENDRY COUNTY WITHIN THE LAST FEW MINUTES. THIS
THUNDERSTORM IS MOVING VERY LITTLE...LESS THAN 10 MPH. THIS THUNDERSTORM
WILL BE AFFECTING THE BIG CYPRESS SEMINOLE INDIAN RESERVATION DURING
THE NEXT 30 MINUTES.
 
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.
 
IN SCHOOL...WHEREVER POSSIBLE...FOLLOW SEVERE WEATHER PLANS OR MOVE
TO AN INTERIOR HALLWAY AWAY FROM WINDOWS. IN ANY CIRCUMSTANCE...DO
NOT REMAIN IN THE CAFETERIA OR GYMNASIUM BUT SEEK SHELTER ELSEWHERE
IN THE SCHOOL.
 
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.

IssuedProductOfficeCountiesLasted
Jul 15, 5:24 PM EDTTornado WarningMFLBroward, Collier36 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.