Alert archive / Florida / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 79, NWS Miami, FL

July 3, 1997Collier County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Jul 3, 1997, 5:43 PM EDT for Collier County, Florida. It was in force for 77 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, 5:43 PM EDT (21:43 UTC)
Expired
Jul 3, 1997, 7:00 PM EDT
In force
77 min
Issued by
NWS Miami, FL
Area
Whole counties

County Collier County, FL

The nearest sounding before it

Miami, FL (KMIA), launched 12:00Z, 9.7 hours before the alert went out and 113 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.

000 
TTAA00 KMIA 032146 RRA
SVRMIA
FLC021-032300-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE MIAMI FL
543 PM EDT THU JUL 3 1997
 
THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
EFFECTIVE UNTIL  700 PM EDT
 
FOR PEOPLE IN THE FOLLOWING LOCATION......
 
IN SOUTHWEST FLORIDA
 
   ...NORTHWESTERN COLLIER COUNTY
 
AND THE ADJACENT COASTAL WATERS
 
A SEVERE THUNDERSTORM WILL CONTINUE TO MOVE WEST-SOUTHWEST OVER
THE NORTHWEST PART OF COLLIER COUNTY AND INTO GULF OF MEXICO
COASTAL WATERS...PASSING BETWEEN BONITA SPRINGS AND NAPLES
THROUGH ABOUT 615 PM...AND CONTINUING OFFSHORE 615 PM THROUGH
7 PM.
 
EARLIER THIS STORM CAUSED HIGH WINDS AND HAIL AT THE SIX-MILE
BRIDGE TO IMMOKALEE...THREE FUNNEL CLOUDS WERE SEEN NEAR
BIG CORKSCREW...AND GOLF BALL SIZED HAIL POUNDED OTHER AREAS
AROUND BIG CORKSCREW AT 525 PM.
 
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.
 
 
 
&

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, 6:53 PM EDTSevere Thunderstorm WarningMFLMiami-Dade67 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.