Alert archive / Florida / Tornado Warnings in 1990

Tornado Warning 10, NWS Melbourne, FL

November 9, 1990Volusia County, Florida

NWS Melbourne, FL issued this tornado warning at Nov 9, 1990, 7:45 PM EST for Volusia County, Florida. It was in force for 30 min.

The area

The counties it named.

The facts

Issued
Nov 9, 1990, 7:45 PM EST (00:45 UTC)
Expired
Nov 9, 1990, 8:15 PM EST
In force
30 min
Issued by
NWS Melbourne, FL
Area
Whole counties

County Volusia 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 00:00Z, 0.8 hours before the alert went out and 91 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 1990-11-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1942 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 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 1990-11-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 242 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
1942 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
616 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
242 m²/s²
0-3 km storm-relative helicity
321 m²/s²
Significant tornado parameter
2.6
Supercell composite
14.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KDAB 100045
TORDAB
FLC127-100115-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DAYTONA BEACH FL
745 PM EST FRI NOV 9 1990
 
THE NATIONAL WEATHER SERVICE IN DAYTONA BEACH HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  815 PM EST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN EAST CENTRAL FLORIDA
 
   ...VOLUSIA COUNTY
 
AND THE ADJACENT COASTAL WATERS.
 
 
A TORNADO WAS OBSERVED BY TOWER PERSONNEL ABOUT 1 MILE WEST OF THE
DAYTONA BEACH REGIONAL AIRPORT AT 739PM. MOVEMENT OF THE TORNADO
WAS NORTHEAST AT ABOUT 30 MPH.
 
 
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 tTO 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.

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.