Alert archive / Florida / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 81, NWS Melbourne, FL

July 14, 1992Osceola County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Jul 14, 1992, 7:04 PM EDT for Osceola County, Florida. It was in force for 56 min.

The area

The counties it named.

The facts

Issued
Jul 14, 1992, 7:04 PM EDT (23:04 UTC)
Expired
Jul 14, 1992, 8:00 PM EDT
In force
56 min
Issued by
NWS Melbourne, FL
Area
Whole counties

County Osceola County, FL

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 11.1 hours before the alert went out and 129 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, Tampa Bay, FL at 12:00Z on 1992-07-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 667 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, Tampa Bay, FL at 12:00Z on 1992-07-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 9 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
667 J/kg
Mixed-layer CIN
-99 J/kg
Mixed-layer LCL
1136 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
9 m²/s²
0-3 km storm-relative helicity
0 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 KMLB 142304
SVRMLB
FLC097-150000-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
704 PM EDT TUE JUL 14 1992
 
THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  800 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN CENTRAL FLORIDA
 
   ...SOUTHERN OSCEOLA COUNTY
 
AT 700 PM WEATHER RADAR INDICATED A SEVERE THUNDERSTORM WAS
ALONG HIGHWAY 60 SOUTHEAST OF LAKE KISSIMMEE. THE SEVERE
STORM WAS MOVING TO THE NORTHWEST AT 5 TO 10 MPH AND SHOULD
REACH THE SOUTH END OF LAKE KISSIMMEE BY 8 PM.
 
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD
PREPARE FOR DAMAGING WIND IN EXCESS OF 58 MPH...LARGE HAIL...AND
DEADLY LIGHTNING.  PEOPLE OUTSIDE OR IN MOBILE HOMES SHOULD MOVE
INSIDE A STRONG BUILDING AND STAY AWAY FROM WINDOWS.

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 14, 6:03 PM EDT, 1 hour 1 minute before
FLZ009-142205-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DAYTONA BEACH FL
605 PM EDT TUE JUL 14 1992

...STRONG THUNDERSTORMS OVER SOUTH MARION COUNTY...
...THIS STATEMENT IS FOR SOUTH MARION COUNTY...

AT 605 PM EDT...NATIONAL WEATHER SERVICE RADAR DETECTED A SMALL
CLUSTER OF THUNDERSTORMS NEAR WEIRSDALE. MOVEMENT WAS NORTH
AT 5 TO 10 MPH.

DURING THE NEXT HOUR...THUNDERSTORMS WILL AFFECT SOUTH MARION
COUNTY AND CAN BRING STRONG DAMAGfING WINDS...FREQUENT LIGHTNING...
VERY HEAVY DOWNPOURS...AND POSSIBLY SMALL HAIL.

RESIDENTS SHOULD STAY ON THE LOOKOUT FOR THESE STORMS. BEST PROTECTION
FROM LIGHTNING IS INSIDE A BUILDING OR CAR.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 14, 2:55 PM EDTSevere Thunderstorm WarningMLBMartin50 min
Jul 14, 3:43 PM EDTSevere Thunderstorm WarningMLBPalm Beach47 min
Jul 14, 5:51 PM EDTSevere Thunderstorm WarningMLBLake54 min

Nearby

Severe Thunderstorm Warnings in Florida, 1992Every 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.