Alert archive / Florida / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 75, NWS Miami, FL

June 22, 1997Glades County, Hendry County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Jun 22, 1997, 1:17 PM EDT for Glades County, Hendry County, Florida. It was in force for 58 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
Jun 22, 1997, 1:17 PM EDT (17:17 UTC)
Expired
Jun 22, 1997, 2:15 PM EDT
In force
58 min
Issued by
NWS Miami, FL
Area
Whole counties

Counties Glades County, FL, Hendry County, FL

The radar

The Miami radar (KAMX), 148 km from the middle of the area, began a volume at 17:21 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, 5.3 hours before the alert went out and 137 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 1997-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3017 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 1997-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 33 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
3017 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
643 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
33 m²/s²
0-3 km storm-relative helicity
17 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

099 
WUUS1 KMIA 221719 RRA
SVRMIA
FLC043-051-221815-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
117 PM EDT SUN JUN 22 1997
 
THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  215 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...S...
 
IN SOUTH FLORIDA
 
   ...GLADES COUNTY...HENDRY COUNTY
 
AT 115 PM...WEATHER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS
MOVING THROUGH WESTERN GLADES AND HENDRY COUNTIES. RESIDENTS SHOULD
EXPECT LARGE HAIL AND VERY HIGH WINDS. A REPORT OF GOLF BALL HAIL
AND A FUNNEL CLOUD WAS REPORTED JUST EAST OF LABELLE ON HWY 80.
MOVEMENT OF THE STORMS WAS TO THE WEST AT 10 TO 15 MPH.
 
IF THREATENING WEATHER IS SIGHTED...TAKE SHELTER...THEN REPORT THE
SEVERE WEATHER TO YOUR LOCAL LAW ENFORCEMENT AGENCY.
 
&

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 8:18 PM EDTSevere Thunderstorm WarningMFLCollier27 min
Jun 22, 9:46 AM EDTTornado WarningMFLMiami-Dade59 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; radar from the NEXRAD Level II archive.