Alert archive / Florida / Tornado Warnings in 1990

Tornado Warning 7, NWS Melbourne, FL

September 27, 1990Palm Beach County, Florida

NWS Melbourne, FL issued this tornado warning at Sep 27, 1990, 12:35 PM EDT for Palm Beach County, Florida. It was in force for 40 min.

The area

The counties it named.

The facts

Issued
Sep 27, 1990, 12:35 PM EDT (16:35 UTC)
Expired
Sep 27, 1990, 1:15 PM EDT
In force
40 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, 4.6 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 1990-09-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2156 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 1990-09-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 35 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
2156 J/kg
Mixed-layer CIN
-9 J/kg
Mixed-layer LCL
762 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
35 m²/s²
0-3 km storm-relative helicity
40 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 271635
TORPBI
FLC099-271715-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE WEST PALM BEACH FL
1235 PM EDT THU SEP 27 1990
 
THE NATIONAL WEATHER SERVICE IN WEST PALM BEACH HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  115 PM EDT
FOR THE FOLLOWING LOCATIONS...
 
IN SOUTHEAST FLORIDA
 
   ...NORTHERN PALM BEACH COUNTY
 
AND THE ADJACANT WATERS OF THE SOUTHEAST FLORIDA COAST
 
 
A FUNNEL CLOUD HAS BEEN SIGHTED DUE EAST OF JONATHAN-DIKERSON STATE
PARK OVER THE BEACH. THIS HAS BEEN REPORTED BY THE COAST GAURD AND
SIGHTED BY CONTROL TOWER AT THE PALM BEACH INTERNATIONAL AIRPORT.
 
THE FUNNEL CLOUD APPEARS TO BE MOVING SOUTH.
 
 
IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS A
BASEMENT.  GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE.
IF NO BASEMENT IS AVAILABLE...SEEK SHELTER IN AN INTERIOR ROOM
SUCH AS A CLOSET ON THE LOWEST FLOOR.  USE BLANKETS...PILLOWS...
OR CUSHIONS TO COVER YOUR BODY.  AVOID WINDOWS.
 
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.  OTHERWISE...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

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.