Alert archive / Florida / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 17, NWS Miami, FL

April 6, 1995Collier County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Apr 6, 1995, 11:37 AM EDT for Collier County, Florida. It was in force for 68 min.

The area

The counties it named.

The facts

Issued
Apr 6, 1995, 11:37 AM EDT (15:37 UTC)
Expired
Apr 6, 1995, 12:45 PM EDT
In force
68 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, 3.6 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 1995-04-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1468 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 1995-04-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 125 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
1468 J/kg
Mixed-layer CIN
-30 J/kg
Mixed-layer LCL
815 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
125 m²/s²
0-3 km storm-relative helicity
107 m²/s²
Significant tornado parameter
0.9
Supercell composite
7.7

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMIA 061539 RRA
SVRMIA
FLC021-FLZ504-061645-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE MIAMI FL
1137 AM EDT THU APR 6 1995
 
THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
EFFECTIVE UNTIL 1245 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION......
 
IN SOUTHWEST FLORIDA
 
   ...WESTERN COLLIER COUNTY
 
  AND FOR BOATERS ON THE COASTAL WATERS FROM
 
   ...EVERGLADES CITY  TO  BONITA BEACH
 
A SEVERE THUNDERSTORM IS INDICATED ON NATIONAL WEATHER SERVICE DOPPLER
RADAR ABOUT 15 MILES TO THE WEST OF NAPLES MOVING TOWARD THE SOUTHEAST
AT 40 MPH. RADAR INDICATES THIS THUNDERSTORM CONTAINS HAIL AND POTENTIAL
DAMAGING WINDS. SEVERE WEATHER IS POSSIBLE AS THE THUNDERSTORM MOVES
THROUGH THE AREA DURING THE NEXT 15 TO 20 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.
 
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. WEAR FLOTATION DEVICES.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 6, 2:31 AM EDTSevere Thunderstorm WarningMFLCollier44 min
Apr 6, 3:15 AM EDTTornado WarningMFLCollier60 min
Apr 6, 1:48 PM EDTSevere Thunderstorm WarningMFLPalm Beach57 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.