Alert archive / Florida / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 9, NWS Melbourne, FL

February 5, 1992Orange County, Seminole County, Florida

NWS Melbourne, FL issued this severe thunderstorm warning at Feb 5, 1992, 4:34 PM EST for Orange County, Seminole County, Florida. It was in force for 41 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Feb 5, 1992, 4:34 PM EST (21:34 UTC)
Expired
Feb 5, 1992, 5:15 PM EST
In force
41 min
Issued by
NWS Melbourne, FL
Area
Whole counties

Counties Orange County, FL, Seminole County, FL

What was reported inside it

TimeReportWhereRemark
Feb 5, 5:00 PM ESTHail 0.75Seminole, FL
Feb 5, 5:19 PM ESTHail 0.88Seminole, FL

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 9.6 hours before the alert went out and 150 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 1992-02-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 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 1992-02-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -286 square meters per square second.19395878Sfc1 km3 km6 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
712 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
-286 m²/s²
0-3 km storm-relative helicity
-268 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 052135
SVRMLB
FLC095-117-052215-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
434 PM EST WED FEB 5 1992
 
THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  515 PM EST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN CENTRAL FLORIDA
 
   ...NORTHWESTERN ORANGE COUNTY...WESTERN SEMINOLE COUNTY
 
AT 430 PM WEATHER RADAR SHOWED A SEVERE THUNDERSTORM OVER APOPKA
MOVING TO THE NORTHEAST AT 30 MPH. THE THUNDERSTORMS WILL MOVE
THROUGH APOPKA AND INTO WESTERN SEMINOLE COUNTY WITHIN THE
NEXT HALF HOUR. PERSONS IN THESE AREAS SHOULD TAKE SHELTER
IMMEDIATELY.
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING.  REMAIN CALM BUT BE READY TO GO
TO A SAFE PLACE IF SEVERE THUNDERSTORMS MOVE TOWARD YOUR AREA,
ESPECIALLY IF YOU LIVE IN A MOBNILE HOME.

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, Feb 5, 2:43 PM EST, 1 hour 51 minutes before
FLZ006>017-020-052100-

SPECIAL WEATHER STATEMENT AN RADAR SUMMARY
NATIONAL WEATHER SERVICE DAYTONA BEACH FL
240 PM EST WED FEB 5 1992

...A TORNADO WATCH IS IN EFFECT FOR PARTS OF NORTH AND CENTRAL FLORIDA
AND THE ADJACENT COASTAL WATERS UNTIL 800 PM EST THIS EVENING AND
INCLUDES MARION...FLAGLER AND VOLUSIA COUNTIES...

AT 235 PM...SHOWERS HAD DEVELOPED RAPIDLY OVER THE INTERIOR OF CENTRAL
FLORIDA BETWEEN LAKELAND AND LEESBURG AND WERE MOVING NORTHEAST AT 40
MPH.
Special weather statement, Feb 5, 2:56 PM EST, 1 hour 38 minutes before
FLZ017-011-016-012-009-052100-

SPECIAL EAST CENTRAL FLORIDA WEATHER UPDATE
NATIONAL WEATHER SERVICE MELBOURNE FL
255 PM EST WED FEB 5 1992

...STRONG THUNDERSTORMS RAPIDLY DEVELOPING NEAR CLERMONT...

...A TORNADO WATCH IS IN EFFECT FOR ALL OF EAST CENTRAL
   FLORIDA UNTIL 8PM THIS EVENING...

AT 250 PM NATIONAL WEATHER SERVICE RADAR SHOWED A BAND OF RAPIDLY
DEVELOPING THUNDERSTORMS EXTENDING WEST OF ORLANDO FROM ZELLWOOD
SOUTHWEST THROUGH THE CLERMONT AREA. THE STRONGEST THUNDERSTORM
WAS NEAR CLERMONT.

THE THUNDERSTORMS WERE MOVING RAPIDLY TO THE NORTHEAST AT 40 MPH.

DURING THE NEXT HOUR THE THUNDERSTORMS WILL MOVE THROUGH CLERMONT
AND EXTEND FROM SANFORD TO THE ORLANDO AREA AROUND WINTER GARDEN.
THE THUNDERSTORMS ARE EXPECTED TO INTENSIFY AND PERSONS IN THESE
AREAS SHOULD BE ON THE ALERT FOR WIND GUSTS OF 40 TO 50 MPH...
FREQUENT DANGEROUS LIGHTNING...AND POSSIBLE HAIL. A TORNADO WATCH
REMAINS IN EFFECT FOR ALL OF EAST CENTRAL FLORIDA UNTIL 8 PM THIS
EVENING.

STAY TUNED TO NOAA WEATHER RADIO OR NEWS MEDIA FOR FURTHER UPDATES
AS THE AFTERNOON PROGRESSES.
Local storm report, Feb 5, 2:58 PM EST, 1 hour 36 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE DAYTONA BEACH FL
255 PM EST WED FEB 5 1992

2/5/92    0540  EST  MARION COUNTY, SUMMERFIELD, 15 SSE OF OCALA.
                     CARPORT...INCLUDING THE CONCRETE POSTS... WERE
                     LIFTED ONTO ROOF OF HOUSE. REPORTED BY THE OCALA
                     STAR-BANNER.  SVR IN EFFECT 0536 TO 0630 EST.

2/5/92    0638  EST  VOLUSIA COUNTY, DAYTONA BEACH WEATHER SERVICE
                     OFFICE. WIN&D GUST TO 50 KTS (58 MPH). SVR IN
                     EFFECT 0615 TO 0715 EST.

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 5, 5:24 AM ESTSevere Thunderstorm WarningMLBLake66 min
Feb 5, 5:26 AM ESTSevere Thunderstorm WarningMLBMarion64 min
Feb 5, 5:42 AM ESTSevere Thunderstorm WarningMLBOrange, Osceola, Seminole63 min
Feb 5, 6:16 AM ESTSevere Thunderstorm WarningMLBVolusia59 min
Feb 5, 6:40 AM ESTSevere Thunderstorm WarningMLBBrevard50 min
Feb 5, 3:31 PM ESTSevere Thunderstorm WarningMLBLake, Orange44 min
Feb 5, 3:40 PM ESTSevere Thunderstorm WarningMLBVolusia65 min
Feb 5, 3:47 PM ESTSevere Thunderstorm WarningMLBSeminole43 min
Feb 5, 5:10 PM ESTSevere Thunderstorm WarningMLBFlagler65 min
Feb 5, 5:11 PM ESTSevere Thunderstorm WarningMLBSeminole34 min
Feb 5, 5:18 PM ESTSevere Thunderstorm WarningMLBMarion42 min
Feb 5, 5:34 PM ESTSevere Thunderstorm WarningMLBVolusia56 min
Feb 5, 6:42 PM ESTSevere Thunderstorm WarningMLBOrange63 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.