Alert archive / Florida / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 55, NWS Miami, FL

August 15, 1996Palm Beach County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Aug 15, 1996, 4:40 PM EDT for Palm Beach County, Florida. It was in force for 65 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 15, 1996, 4:40 PM EDT (20:40 UTC)
Expired
Aug 15, 1996, 5:45 PM EDT
In force
65 min
Issued by
NWS Miami, FL
Area
Whole counties

County Palm Beach County, FL

The nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 8.7 hours before the alert went out and 93 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, Miami, FL at 12:00Z on 1996-08-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1536 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Miami, FL at 12:00Z on 1996-08-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -82 square meters per square second.1939Sfc1 km3 km6 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
1536 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
606 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
-82 m²/s²
0-3 km storm-relative helicity
-56 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 KMIA 152043
SVRMIA
FLC099-152145-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
440 PM EDT THU AUG 15 1996
 
THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  545 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION......
 
IN SOUTHEAST FLORIDA
 
   ...WESTERN PALM BEACH COUNTY
 
NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
A THUNDERSTORM WHICH WILL BECOME SEVERE BETWEEN 445 PM
AND 545 PM OVER WESTERN PALM BEACH COUNTY. AREAS THAT WILL
BE AFFECTED INCLUDE THE AREA ALONG AND WEST OF HIGHWAY 27
FROM OKEELANTA TO 15 MILES SOUTH OF OKEELANTA. STORMS WILL
MOVE WEST OVER AGRICULTURAL AREAS TOWARD HENDRY COUNTY.
B 
 
DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...VERY HEAVY RAIN...
AND DEADLY LIGHTNING ARE ALL POSSIBLE IN A SEVERE THUNDERSTORM. SEEK
SHELTER IN A STRONG BUILDING.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 15, 2:30 PM EDTSevere Thunderstorm WarningMFLCollier60 min
Aug 15, 5:24 PM EDTSevere Thunderstorm WarningMFLHendry66 min

Nearby

Severe Thunderstorm Warnings in Florida, 1996Every severe thunderstorm warning in 1996

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.