Alert archive / Florida / Tornado Warnings in 1990

Tornado Warning 2, NWS Melbourne, FL

June 4, 1990Palm Beach County, Florida

NWS Melbourne, FL issued this tornado warning at Jun 4, 1990, 4:37 PM EDT for Palm Beach County, Florida. It was in force for 53 min.

The area

The counties it named.

The facts

Issued
Jun 4, 1990, 4:37 PM EDT (20:37 UTC)
Expired
Jun 4, 1990, 5:30 PM EDT
In force
53 min
Issued by
NWS Melbourne, FL
Area
Whole counties

County Palm Beach County, FL

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Cape Canaveral, FL (KXMR), launched 12:00Z, 8.6 hours before the alert went out and 203 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 12:00Z on 1990-06-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 928 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 12:00Z on 1990-06-04The 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
928 J/kg
Mixed-layer CIN
-53 J/kg
Mixed-layer LCL
873 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
-9 m²/s²
0-3 km storm-relative helicity
-18 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 042037
TORPBI
FLC099-042130-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE WEST PALM BEACH FL
437 PM EDT MON JUN 4 1990
 
THE NATIONAL WEATHER SERVICE IN WEST PALM BEACH HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  530 PM EDT
FOR THE FOLLOWING LOCATIONS...
 
IN SOUTHEAST FLORIDA
 
   ...SOUTHERN PALM BEACH COUNTY
 
AND THE ADJACANT WATERS OF THE SOUTHEAST FLORIDA COAST
 
 
AT 4 PM EDT...A FUNNEL CLOUD WAS REPORTED BY SOUTH FLORIDA MANAGEMENT
WEST OF JOG ROAD NEAR LANTANA AND MOVING EAST AT ABOUT 10 MILES AN HOU
 
 
 
 
THIS IS A DANGEROUS STORM SITUATION.  ACT QUICKLY.  IF YOU ARE
IN THE PATH OF THIS TORNADO MOVE TO A SHELTER BELOW GROUND IF
AVAILABLE.  OTHERWISSE...GO TO A SMALL INTERIOR ROOM ON THE LOWEST
FLOOR POSSIBLE.  AVOID WINDOWS.  ABANDON CARS AND MOBILE HOMES
FOR A REINFORCED BUILDING OR GET INTO A DITCH OR CULVERT.
 
NNNN

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 4, 5:30 PM EDTSevere Thunderstorm WarningMLBPalm Beach60 min
Jun 4, 6:12 PM EDTSevere Thunderstorm WarningMLBIndian River33 min
Jun 4, 6:34 PM EDTSevere Thunderstorm WarningMLBSaint Lucie56 min

Nearby

Tornado Warnings in Florida, 1990Every tornado warning in 1990Tornadoes in 1990

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.