Alert archive / Florida / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 4, NWS Melbourne, FL

February 10, 1993Okeechobee County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Feb 10, 1993, 10:24 PM EST for Okeechobee County, Florida. It was in force for 51 min.

The area

The counties it named.

The facts

Issued
Feb 10, 1993, 10:24 PM EST (03:24 UTC)
Expired
Feb 10, 1993, 11:15 PM EST
In force
51 min
Issued by
NWS Melbourne, FL
Area
Whole counties

County Okeechobee County, FL

The nearest sounding before it

Cape Canaveral, FL (KXMR), launched 00:00Z, 3.4 hours before the alert went out and 126 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, Cape Canaveral, FL at 00:00Z on 1993-02-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 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, Cape Canaveral, FL at 00:00Z on 1993-02-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 73 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
702 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
73 m²/s²
0-3 km storm-relative helicity
113 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 KPBI 110324
SVRPBI
FLC093-110415-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WEST PALM BEACH FL
1024 PM EST WED FEB 10 1993
 
THE NATIONAL WEATHER SERVICE IN WEST PALM BEACH HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1115 PM EST
FOR THE FOLLOWING LOCATIONS......
 
IN SOUTH FLORIDA
 
   ...SOUTHERN OKEECHOBEE COUNTY AND LAKE OKEECHOBEE
 
A SEVERE THUNDERSTORM WAS DETECTED BY RADAR OVER NORTHWESTERN LAKE
OKEECHOBEE AND WAS DRIFTING NORTHEAST AT NEAR 5 MILES AN HOUR.
THIS STORM IS ACCOMPANIED BY DANGEROUS LIGHTNING... HEAVY RAINS...
ROUGH WATERS... AND WINDS IN EXCESS OF 55 MPH.
 
WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A
STRONG BUILDING.  DO NOT STAND BY WINDOWS.  DON'T USE TELEPHONES
OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM
HAS PASSED.  MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS.
MARNINERS SHOULD SEEK SAFE SHELTER OR HARBOR WHEN THUNDERSTORMS
APPROACH.
 
 
NNNN

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 10, 8:14 PM EST, 2 hours 10 minutes before
FLZ017-011-016-012-009-110315-

SPECIAL EAST CENTRAL FLORIDA WEATHER UPDATE
NATIONAL WEATHER SERVICE MELBOURNE FL
815 PM EST WED FEB 10 1993

...AREAS OF DENSE FOG ACROSS THE COAST FROM DAYTONA BEACH TO VERO
BEACH...

AT 810 PM AREAS OF DENSE FOG CONTINUED TO MOVE INLAND OVER VOLUSIA
AND BREVARD COUNTIES. VISIBILITY WAS 200 YARDS AT THE SPACE CENTER
AND COCOA BEACH AND 1/4 MILE IN DAYTONA BEACH AND TITUSVILLE. LOCAL
FIRE DEPARTMENTS HAVE REPORTED VISIBILITY NEAR ZERO IN PARTS OF
NORTHERN AND CENTRAL BREVARD COUNTY.

MOTORISTS SHOULD USE EXTREME CAUTION WHILE DRIVING TONIGHT...
ESPECIALLY ALONG SR A1A AND RT 1 WHERE THE FOG IS MOST DENSE.
REDUCE SPEED WHERE VISIBILITY IS LOW AND ALWAYS hUSE LOW BEAM
HEADLIGHTS.

DENSE FOG WILL REMAIN OVER THE COAST THROUGH THE NIGHT WITH PATCHES
OF DENSE FOG DEVELOPING OVER INLAND AREAS BY MIDNIGHT.

RES
Special weather statement, Feb 10, 9:12 PM EST, 1 hour 12 minutes before
FLZ017-011-016-012-009-110415-

SPECIAL EAST CENTRAL FLORIDA WEATHER UPDATE
NATIONAL WEATHER SERVICE MELBOURNE FL
913 PM EST WED FEB 10 1993

...DENSE FOG ADVISORY OVERNIGHT FOR FLAGLER...VOLUSIA...BREVARD...
AND INDIAN RIVER COUNTIES...

DENSE FOG WAS WIDESPREAD THIS EVENING ALONG THE COAST OF EAST
CENTRAL FLORIDA WITH VISIBILITIES OF 1/4 MILE OR LOWER. THE FOG WAS
MOST DENSE ALONG SR A1A AND RT 1 FROM VERO BEACH TO DAYTONA BEACH.
MOTORISTS SHOULD USE EXTRA CAUTION OVERNIGHT WHERE VISIBILITY IS
LOW...REDUCE SPEED AND USE LOW BEAM HEADLIGHTS.

ELSEWHERE OVER EAST CENTRAL FLORIDA PATCHY FOG WAS BEGINNING TO
FORM OVER THE INTERIOR AND WILL BECOME LOCALLY DENSE AFTER MIDNIGHT.

RES



Nearby

Severe Thunderstorm Warnings in Florida, 1993Every severe thunderstorm warning 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.