Alert archive / Florida / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 24, NWS Miami, FL

May 22, 1997Glades County, Hendry County, Florida

NWS Miami, FL issued this severe thunderstorm warning at May 22, 1997, 7:20 PM EDT for Glades County, Hendry 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
May 22, 1997, 7:20 PM EDT (23:20 UTC)
Expired
May 22, 1997, 8:20 PM EDT
In force
60 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 23:24 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, 11.3 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 1997-05-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1323 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 1997-05-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -10 square meters per square second.193958Sfc1 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
1323 J/kg
Mixed-layer CIN
-31 J/kg
Mixed-layer LCL
979 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
-10 m²/s²
0-3 km storm-relative helicity
5 m²/s²
Significant tornado parameter
-0.0
Supercell composite
-0.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMIA 222321
SVRMIA
FLC043-051-230020-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
720 PM EDT THU MAY 22 1997

THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 820 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN SOUTH FLORIDA

   ...EASTERN GLADES COUNTY
   ...NORTHERN HENDRY COUNTY
 
AT 716 PM EDT...A SEVERE THUNDERSTORM WAS INDICATED BY MIAMI DOPPLER
RADAR 7 MILES WEST OF BRIGHTON MOVING SOUTH SOUTHEAST AT 25 MPH.

SOME LOCATIONS IN THE PATH OF THIS STORM ARE...CALUSA...LAKEPORT AND
MOORE HAVEN.  THIS THUNDERSTORM WILL ALSO THREATEN THE WESTERN
SECTIONS OF LAKE OKEECHOBEE.

THIS THUNDERSTORM IS CAPABLE OF PRODUCING LARGE HAIL AND WIND GUSTS
IN EXCESS OF 50 KNOTS.

THUNDERSTORMS THREATEN BOATER SAFETY WITH GUSTY WINDS...ROUGH
SEAS...AND DEADLY LIGHTNING. YOUR BEST COURSE OF ACTION IS TO SEEK
SAFE HARBOR...BUT IF YOU ARE CAUGHT ON THE OPEN WATER...STAY BELOW
DECK OR KEEP A LOW PROFILE AND KEEP AWAY FROM UNGROUNDED METAL
OBJECTS. ALL SHOULD WEAR FLOTATION DEVICES.

The office that day

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

IssuedProductOfficeCountiesLasted
May 22, 2:00 PM EDTSevere Thunderstorm WarningMFLPalm Beach60 min
May 22, 4:21 PM EDTSevere Thunderstorm WarningMFLBroward59 min
May 22, 6:27 PM EDTSevere Thunderstorm WarningMFLGlades53 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.