Alert archive / Florida / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 29, NWS Miami, FL

July 22, 1994Collier County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Jul 22, 1994, 5:02 PM EDT for Collier County, Florida. It was in force for 58 min.

The area

The counties it named.

The facts

Issued
Jul 22, 1994, 5:02 PM EDT (21:02 UTC)
Expired
Jul 22, 1994, 6:00 PM EDT
In force
58 min
Issued by
NWS Miami, FL
Area
Whole counties

County Collier County, FL

The nearest sounding before it

Key West, FL (KEYW), launched 12:00Z, 9.0 hours before the alert went out and 174 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 1994-07-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1845 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 1994-07-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 9 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
1845 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
700 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
9 m²/s²
0-3 km storm-relative helicity
23 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 222106 RRA
SVRMIA
FLC021-FLZ504-222200-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE MIAMI FL
502 PM EDT FRI JUL 22 1994
 
THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
EFFECTIVE UNTIL  600 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION......
 
IN SOUTHWEST FLORIDA...WESTERN COLLIER COUNTY
 
AT 450 PM MIAMI DOPPLER RADAR DETECTED SIGNS THAT A SEVERE THUNDERSTORM
IS DEVELOPING OVER WESTERN COLLIER COUUNTY...2 MILES EAST OF NAPLES.
THESE THUNDERSTORMS HAVE CLUSTERED ALONG A LINE THAT EXTENDS FROM
GOODLAND TO BONITA SPRINGS.
 
THE THUNDERSTORMS ARE NOW MOVING WEST AT 10 TO 15 MILES AN HOUR...TOWARDTHE COLLIER COUNTY COAST.  THIS MOTION WILL TAKE THE STRONGEST CELLS ACR
STHE CITIES OF NAPLES AND NAPLES PARK.
 
 
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 WEARING
FLOTATION DEVICES.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 22, 2:10 PM EDTTornado WarningMFLMiami-Dade35 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.