Alert archive / Florida / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 6, NWS Miami, FL

July 18, 1992Glades County, Hendry County, Florida

NWS Miami, FL issued this severe thunderstorm warning at Jul 18, 1992, 3:25 PM EDT for Glades County, Hendry County, Florida. It was in force for 65 min.

The area

The counties it named.

The facts

Issued: Jul 18, 1992, 3:25 PM EDT (19:25 UTC)
Expired: Jul 18, 1992, 4:30 PM EDT
In force: 65 min
Issued by: NWS Miami, FL
Area: Whole counties

Counties Glades County, FL, Hendry County, FL

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 7.4 hours before the alert went out and 161 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1138 J/kg
Mixed-layer CIN: -34 J/kg
Mixed-layer LCL: 911 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: -14 m²/s²
0-3 km storm-relative helicity: -2 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 181926
SVRMIA
FLC043-051-182030-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIAMI FL
325 PM EDT SAT JUL 18 1992
 
THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  430 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN SOUTH FLORIDA
 
   ...GLADES COUNTY...NORTHEASTERN HENDRY COUNTY
 
AT 320 PM EDT RADAR INDICATED A SEVERE THUNDERSTORM JUST EAST OF
CLEWISTON IN NORTHEAST HENDRY COUNTY. THIS STORM IS MOVING NORTHWEST
AT 10 MPH.
 
DOWNED TREES AND POWER LINES HAVE BEEN REPORTED IN THE PATH OF THIS
STORM AS IT PASSED THROUGH WESTERN PALM BEACH COUNTY NEAR BELLE GLADE.
STRONG WIND GUSTS AND POSSIBLY SOME HAIL IS EXPECTED FROM CLEWISTON
NORTHWEST THROUGH GLADES COUNTY FOR THE NEXT HOUR OR SO.
 
 
 
 
DAMAGING WIND...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 MOBILE HOME IS NOT A SAFE REFUGE FROM A
SEVERE THUNDERSTORM...MOVE TO A MORE SUBSTANTIAL BUILDING.
 
IF THREATENING WEATHER IS SIGHTED...TAKE SHELTER...THEN ASK A LAW
ENFORCxEMENT AGENCY TO RELAY YOUR SEVERE WEATHER REPORT TO THE LOCAL
NATIONAL WEATHER SERVICE OFFICE.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jul 18, 3:08 PM EDT, 17 minutes before

FLZ019-182115-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WEST PALM BEACH FL
310 PM EDT SAT JUL 18 1992

AT 3PM EDT...WEATHER SERVICE RADAR INDICATED STRONG THUNDER
STORMS WITH VERY HEAVY RAIN SOUTHWEST OF SOUTH BAY AND NEAR
AND AROUND BELLE GLADE IN SOUTHWESTERN PALM BEACH COUNTY.
THESE STORMS ARE MOVING TOWARDS THE WEST VERY SLOWLY AND ARE
CAPABLE OF PRODUCING TORRENTIAL RAINS...STRONG GUSTY WINDS
AND SMALL HAIL.

PERSON ALONG THE SOUTHEAST END OF LAKE OKEECHOBEE SHOULD BE ALERT
FOR THESE STORMS OVER THE NEXT 1 TO 2 HOURS. BOATERS ON THE WATERS
OF LAKE OKEECHOBEE SHOULD SEEK SAFE HARBOUR IMMEDIATELY UNTIL THESE
STORMS PASS.

NNNN

Nearby

Severe Thunderstorm Warnings in Florida, 1992 Every severe thunderstorm warning in 1992

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.