Alert archive / Florida / Severe Thunderstorm Warnings in 1986

Severe Thunderstorm Warning 14, NWS Melbourne, FL

May 19, 1986Flagler County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at May 19, 1986, 5:28 PM EDT for Flagler County, Florida. It was in force for 62 min.

The area

The counties it named.

The facts

Issued
May 19, 1986, 5:28 PM EDT (21:28 UTC)
Expired
May 19, 1986, 6:30 PM EDT
In force
62 min
Issued by
NWS Melbourne, FL
Area
Whole counties

County Flagler 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

Jacksonville, FL (KAYS), launched 12:00Z, 9.5 hours before the alert went out and 121 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, Jacksonville, FL at 12:00Z on 1986-05-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 425 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, Jacksonville, FL at 12:00Z on 1986-05-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 52 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
425 J/kg
Mixed-layer CIN
-63 J/kg
Mixed-layer LCL
705 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
52 m²/s²
0-3 km storm-relative helicity
89 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KDAB 192135 COR
SVRDAB
FLC035-192230-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE DAYTONA BEACH FL
528 PM EDT MON MAY 19 1986

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM AND
SPECIAL MARINE WARNING EFFECTIVE UNTIL 630 PM EDT FOR PEOPLE IN THE
FOLLOWING COUNTY OF

EAST CENTRAL FLORIDA...FLAGLER
...THIS WARNING ALSO INCLUDES THE ADJACENT COASTAL WATERS FOR THE
COUNTY JUST MENTIONED

A SEVERE THUNDERSTORMS WAS INDICATED ON THE DAYTONA BEACH
RADAR AT 525PM EDT JUST NORTHWEST OF BUNNELL IN FLAGLER
COUNTY FLORIDA. THE SEVERE THUNDERSTORMS WAS MOVING NORTHEAST
15 MPH AND SHOULD REACH THE ATLANTIC COASTAL WATERS DURING
THE NEXT HOUR NEAR OR TO THE NORTH OF FLAGLER BEACH.

IF YOU ARE IN OR NEAR THE WARNED AREA GET TO A REINFORCED SHELTER
AND PREPARE FOR STRONG DAMAGING WINDS..LARGE HAIL..VERY HEAVY RAIN..
AND DANGEROUS LIGHTNING. BOATERS SHOULD TAKE NECESSARY ACTION TO
AVOID THE DANGEROUS THUNDERSTORMS.

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, May 19, 5:10 PM EDT, 18 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DAYTONA BEACH FL
510 PM EDT MON MAY 19 1986

...STRONG THUNDERSTORMS PUSHING INTO FLAGLER AND NORTHWEST VOLUSIA
COUNTIES...

AT 5PM EDT THE NATIONAL WEATHER SERVICE RADAR AT DAYTONA BEACH
SHOWED AN AREA OF STRONG THUNDERSTORMS WITH HEAVY RAINFALL WAS
MOVING ACROSS NORTHERN FLAGLER COUNTY FROM JUST WEST OF MARINELAND
IN ST. JOHNS COUNTY TO NEAR BUNNELL TO THE NORTHWEST TIP OF VOLUSIA
COUNTY NEAR BARBERVILLE.

THE THUNDERSTORMS WERE MOVING NORTHEAST 15 MPH. SOME EASTWARD
DEVELOPMENT IS LIKELY DURING THE REMAINDER OF THIS AFTERNOON AND
EVENING.

RESIDENTS OF FLAGLER AND VOLUSIA COUNTIES SHOULD BE ALERT FOR THIS
STORMS WITH THEIR HEAVY RAINFALL..POSSIBLE STRONG GUSTY WINDS AND
DANGEROUS LIGHTNING STRIKES.

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.