Alert archive / Florida / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 80, NWS Miami, FL

July 3, 1997Miami-Dade County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Jul 3, 1997, 6:53 PM EDT for Miami-Dade County, Florida. It was in force for 67 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
Jul 3, 1997, 6:53 PM EDT (22:53 UTC)
Expired
Jul 3, 1997, 8:00 PM EDT
In force
67 min
Issued by
NWS Miami, FL
Area
Whole counties

County Miami-Dade County, FL

The nearest sounding before it

Miami, FL (KMIA), launched 12:00Z, 10.9 hours before the alert went out and 31 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 1997-07-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2389 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, Miami, FL at 12:00Z on 1997-07-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 square meters per square second.1939Sfc1 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
2389 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
650 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
1 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.

306 
WUUS1 KMIA 032252 RRA
SVRMIA
FLC025-040000-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
653 PM EDT THU JUL 3 1997
 
THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  800 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION......
 
IN SOUTHEAST FLORIDA
 
   ...NORTHWESTERN DADE COUNTY
 
NATIONAL WEATHER SERVICE DOPPLER RADAR AT 650 PM INDICATED
DEVELOPING THUNDERSTORMS WHICH MAY BECOME SEVERE BETWEEN
7 AND 8 PM THIS EVENING...AS THE STORMS MOVE SOUTHWARD OVER
NORTHWEST DADE COUNTY AREAS.
 
AREAS TO BE AFFECTED WILL BE ALONG KROME AVENUE AND OVER
TO THE TURNPIKE FROM THE BROWARD COUNTY LINE SOUTH TO
TAMIAMI TRAIL.
 
DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...VERY HEAVY RAIN...
AND DEADLY LIGHTNING ARE ALL POSSIBLE IN A SEVERE THUNDERSTORM.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 3, 1:52 PM EDTSevere Thunderstorm WarningMFLMiami-Dade68 min
Jul 3, 4:00 PM EDTSevere Thunderstorm WarningMFLCollier90 min
Jul 3, 5:10 PM EDTTornado WarningMFLCollier50 min
Jul 3, 5:43 PM EDTSevere Thunderstorm WarningMFLCollier77 min
Jul 3, 7:30 PM EDTSevere Thunderstorm WarningMFLMiami-Dade60 min
Jul 3, 7:48 PM EDTSevere Thunderstorm WarningMFLHendry72 min

Nearby

Severe Thunderstorm Warnings in Florida, 1997Every severe thunderstorm warning in 1997

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.