Alert archive / Florida / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 5, NWS Melbourne, FL

February 18, 1986Lake County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Feb 18, 1986, 3:05 AM EST for Lake County, Florida. It was in force for 115 min.

The area

The counties it named.

The facts

Issued
Feb 18, 1986, 3:05 AM EST (08:05 UTC)
Expired
Feb 18, 1986, 5:00 AM EST
In force
115 min
Issued by
NWS Melbourne, FL
Area
Whole counties

County Lake 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

Tampa Bay, FL (KTBW), launched 00:00Z, 8.1 hours before the alert went out and 136 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 1986-02-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 1986-02-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 36 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
1794 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
36 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

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 18, 2:24 AM EST, 41 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DAYTONA BEACH FL
220 AM EST TUE FEB 18 1986

VERY HEAVY THUNDERSTORMS ARE MOVING INTO NORTH AND CENTRAL FLORIDA
FROM THE GULF OF MEXICO.

THESE THUNDERSTORMS ARE MOVING NORTHEAST AT 40 MPH AND WILL BE MOVING
INTO MARION COUNTY WITHIN THE HOUR CAUSING VERY HEAVY RAIN..GUSTY
WINDS..FREQUENT AND DANGEROUS LIGHTNING.

THE THUNDERSTORMS WILL CONTINUE IN THE AREA FOR AT LEAST ONE TO TWO
HOURS.

ADDITIONAL STATEMENTS WILL BE ISSUED IF NEEDED.

Nearby

Severe Thunderstorm Warnings in Florida, 1986Every severe thunderstorm warning in 1986

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.