Alert archive / Florida / Tornado Warnings in 1993

Tornado Warning 7, NWS Melbourne, FL

April 5, 1993Okeechobee County, Saint Lucie County, Florida

NWS Melbourne, FL issued this tornado warning at Apr 5, 1993, 4:55 AM EDT for Okeechobee County, Saint Lucie County, Florida. It was in force for 50 min.

The area

The counties it named.

The facts

Issued
Apr 5, 1993, 4:55 AM EDT (08:55 UTC)
Expired
Apr 5, 1993, 5:45 AM EDT
In force
50 min
Issued by
NWS Melbourne, FL
Area
Whole counties

Counties Okeechobee County, FL, Saint Lucie County, FL

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 00:00Z, 8.9 hours before the alert went out and 175 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 00:00Z on 1993-04-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 10 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 00:00Z on 1993-04-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 87 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
10 J/kg
Mixed-layer CIN
-234 J/kg
Mixed-layer LCL
1554 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
87 m²/s²
0-3 km storm-relative helicity
195 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KPBI 050854
TORPBI
FLC093-085-099-111-050945-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE WEST PALM BEACH FL
455 AM EDT MON APR 5 1993

THE NATIONAL WEATHER SERVICE IN WEST PALM BEACH HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  545 AM EDT FOR THE FOLLOWING
LOCATIONS...

IN SOUTH FLORIDA

   ...SOUTHERN OKEECHOBEE COUNTY

IN SOUTHEAST FLORIDA

   ...WESTERN MARTIN COUNTY...WESTERN PALM BEACH COUNTY
   ...SOUTHWESTERN ST.LUCIE COUNTY



EARLY THIS MORNING A TORNADO TOUCHDOWN OCCURRED 10 MILES WEST
OF OKEECHOBEE CITY.

AT 450 AM EDT RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS FROM
NEAR OKEECHOBEE CITY TO WELL SOUTH OF BELLE GLADE.

MOVEMENT OF THIS LINE WAS EAST AT 30 MILES AN HOUR.

A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.

THIS IS A DANGEROUS STORM.  IF YOU ARE IN ITS PATH YOU SHOULD
PREPARE FOR DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...AND
DEADLY LIGHTNING.  PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT STAY AWAY FROM WINDOWS.



NNNN

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 5, 4:37 AM EDTSevere Thunderstorm WarningMLBMartin, Okeechobee, Palm Beach, Saint Lucie68 min
Apr 5, 4:44 AM EDTSevere Thunderstorm WarningMLBOsceola61 min
Apr 5, 4:55 AM EDTTornado WarningMLBMartin, Palm Beach50 min
Apr 5, 5:20 AM EDTSevere Thunderstorm WarningMLBBrevard40 min

Nearby

Tornado Warnings in Florida, 1993Every tornado warning in 1993Tornadoes in 1993

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.