Alert archive / Florida / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 78, NWS Miami, FL

October 8, 1996Collier County, Hendry County, Palm Beach County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Oct 8, 1996, 9:45 AM EDT for Collier County, Hendry County, Palm Beach County, Florida. It was in force for 60 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
Oct 8, 1996, 9:45 AM EDT (13:45 UTC)
Expired
Oct 8, 1996, 10:45 AM EDT
In force
60 min
Issued by
NWS Miami, FL
Area
Whole counties

Counties Collier County, FL, Hendry County, FL, Palm Beach County, FL

The radar

The Miami radar (KAMX), 108 km from the middle of the area, began a volume at 13:47 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Miami, FL (KMFL), launched 12:00Z, 1.8 hours before the alert went out and 98 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 1996-10-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1614 joules per kilogram.LCLEL10008507005003002001001 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, Miami, FL at 12:00Z on 1996-10-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 218 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
1614 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
692 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
218 m²/s²
0-3 km storm-relative helicity
228 m²/s²
Significant tornado parameter
1.0
Supercell composite
8.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMIA 081351
SVRMIA
FLC051-099-021-081445-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
945 AM EDT TUE OCT 8 1996
 
THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1045 AM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...S...
 
IN SOUTH FLORIDA
 
   ...HENDRY COUNTY
 
IN SOUTHEAST FLORIDA
 
   ...WESTERN PALM BEACH COUNTY
 
 
IN SOUTHWEST FLORIDA
 
   ...COLLIER COUNTY
 
AND THE ADJACENT COASTAL WATERS
 
AT 940 AM EDT MIAMI DOPPLER RADAR INDICATED A LINE OF VERY STRONG
THUNDERSTORMS FROM BELLE GLADE TO MILES CITY TO CAPE ROMANO. THIS
LINE IS MOVING EAST AT 10 TO 15 MPH WHILE INDIVIDUAL THUNDERSTORMS
MOVE NORTHEAST AT 40 TO 45 MPH.
 
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. STAY AWAY FROM WINDOWS. DO NOT USE
TELEPHONES OR ELECTRICAL APPLIANCES.
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER...
SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE
WARNING.

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 8, 6:24 AM EDTSevere Thunderstorm WarningMFLCollier66 min
Oct 8, 8:44 AM EDTSevere Thunderstorm WarningMFLCollier61 min
Oct 8, 11:39 AM EDTSevere Thunderstorm WarningMFLMiami-Dade, Monroe66 min
Oct 8, 11:39 AM EDTSevere Thunderstorm WarningMFLBroward66 min
Oct 8, 11:50 AM EDTSevere Thunderstorm WarningMFLBroward, Miami-Dade55 min
Oct 8, 11:50 AM EDTSevere Thunderstorm WarningMFLMonroe55 min
Oct 8, 12:48 PM EDTSevere Thunderstorm WarningMFLBroward, Miami-Dade57 min
Oct 8, 2:34 PM EDTSevere Thunderstorm WarningMFLMiami-Dade41 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; radar from the NEXRAD Level II archive.