Alert archive / Florida / Tornado Warnings in 1993

Tornado Warning 9, NWS Melbourne, FL

May 29, 1993Osceola County, Florida

NWS Melbourne, FL issued this tornado warning at May 29, 1993, 8:07 PM EDT for Osceola County, Florida. It was in force for 38 min.

The area

The counties it named.

The facts

Issued
May 29, 1993, 8:07 PM EDT (00:07 UTC)
Expired
May 29, 1993, 8:45 PM EDT
In force
38 min
Issued by
NWS Melbourne, FL
Area
Whole counties

County Osceola County, FL

The radar

The Melbourne radar (KMLB), 49 km from the middle of the area, began a volume at 00:08 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

Tampa Bay, FL (KTBW), launched 00:00Z, 0.1 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 00:00Z on 1993-05-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 985 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tampa Bay, FL at 00:00Z on 1993-05-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -36 square meters per square second.19395878Sfc1 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
985 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
647 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
-36 m²/s²
0-3 km storm-relative helicity
-10 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.4

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMLB 300008
TORMLB
FLC097-300045-
 
BULLETIN - EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
807 PM EDT SAT MAY 29 1993
 
THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL  845 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN CENTRAL FLORIDA
 
   ...OSCEOLA COUNTY
 
AT 805 PM WEATHER SERVICE RADAR INDICATED A STRONG THUNDERSTORM WHILE A
POSSIBLE TORNADO DEVELOPING JUST SOUTH OF HOLOPAW. DURING THE PAST 15
MINUTES A FUNNEL CLOUD WAS REPORTED WITH THIS CELL NEAR YEEHAW JUNCTION.
THIS STORM IS TRAVELLING NORTH AT 10 MPH.
 
 
THIS IS A DANGEROUS STORM. ACT QUICKLY. IF YOU ARE IN THE PATH OF
THIS TORNADO MOVE TO A SHELTER BELOW GROUND INF AVAILABLE.  OTHERWISE
GO TO A SMALL INTERIOR ROOM ON THE LOWEST FLOOR POSSIBLE. AVOID
WINDOWS. ABANDON CARS AND MOBILE HOMES FOR A REINFORCED BUILDING OR
GET INTO A DITCH OR CULVERT.
 
 
 
&

What forecasters said that day

The local office's own words before this tornado 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, May 29, 3:45 PM EDT, 4 hours 22 minutes before
FLZ006>017-020-292145-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DAYTONA BEACH FL
345 PM EDT SAT MAY 29 1993

...STRONG THUNDERSTORMS OVER THE WEST PART OF VOLUSIA COUNTY...

DURING THE PAST HOUR...STRONG THUNDERSTORMS HAVE DEVELOPED OVER
THE WEST PART OF VOLUSIA COUNTY...REACHING FROM THE NORTHEAST
SHORE OF LAKE GEORGE SOUTH TO BARBERVILLE...DELAND AND OSTEEN.

THESE THUNDERSTORMS WILL LIKELY PRODUCE STRONG WINDS...VERY HEAVY
DOWNPOURS...DANGEROUS LIGHTNING AND POSSIBLY SMALL HAIL FOR THE
NEXT HOUR OR SO AS THE THUNDERSTORMS MOVE NORTH THROUGH THE
AREA AT 10 MPH.

RAINFALL AMOUNTS OF ALMOST ONE AND ONE-HALF INCHES /1.47/ IN
ONE HOUR HAVE BEEN REPORTED IN SOME OF THE HEAVIER DOWNPOURS
EARLIER THIS AFTERNOON IN SECTIONS OF MARION COUNTY.

MOTORISTS ARE ADVISED TO DRIVE WITH CAUTION AND BE ALERT FOR
PONDING OF WATER ON THE ROADWAYS AND NOT DRIVE THROUGH WATER
OF UNKNOWN DEPTH.

OTHER THUNDERSTORMS CONTINUED OVER A GOOD PART OF NORTH AND
CENTRAL FLORIDA AND THE ADJACENT COASTAL WATERS.
Special weather statement, May 29, 3:46 PM EDT, 4 hours 21 minutes before
FLZ006>017-020-292145-

SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DAYTONA BEACH FL
345 PM EDT SAT MAY 29 1993

...STRONG THUNDERSTORMS OVER THE WEST PART OF VOLUSIA COUNTY...

DURING THE PAST HOUR...STRONG THUNDERSTORMS HAVE DEVELOPED OVER
THE WEST PART OF VOLUSIA COUNTY...REACHING FROM THE NORTHEAST
SHORE OF LAKE GEORGE SOUTH TO BARBERVILLE...DELAND AND OSTEEN.

THESE THUNDERSTORMS WILL LIKELY PRODUCE STRONG WINDS...VERY HEAVY
DOWNPOURS...DANGEROUS LIGHTNING AND POSSIBLY SMALL HAIL FOR THE
NEXT HOUR OR SO AS THE THUNDERSTORMS MOVE NORTH THROUGH THE
AREA AT 10 MPH.

RAINFALL AMOUNTS OF ALMOST ONE AND ONE-HALF INCHES /1.47/ IN
ONE HOUR HAVE BEEN REPORTED IN SOME OF THE HEAVIER DOWNPOURS
EARLIER THIS AFTERNOON IN SECTIONS OF MARION COUNTY.

MOTORISTS ARE ADVISED TO DRIVE WITH CAUTION AND BE ALERT FOR
PONDING OF WATER ON THE ROADWAYS AND NOT DRIVE THROUGH WATER
OF UNKNOWN DEPTH.

OTHER THUNDERSTORMS CONTINUED OVER A GOOD PART OF NORTH AND
CENTRAL FLORIDA AND THE ADJACENT COASTAL WATERS.
Special weather statement, May 29, 3:48 PM EDT, 4 hours 19 minutes before
FLZ011-292045-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
348 PM EDT SAT MAY 29 1993

...THUNDERSTORMS WITH VERY HEAVY RAIN AROUND ORLANDO...

AT 345 PM...THUNDERSTORMS WITH VERY HEAVY RAIN WERE SCATTERED FROM
WEST OF MELBOURNE TO ST CLOUD...ORLANDO AND LAKE APOPKA. THESE STORMS
WERE MOVING NORTH AT 10 MPH AND WILL LIKELY RESULT IN LOCALLY HEAVY
RAINFALL AMOUNTS AND STANDING WATER ON ROADWAYS. ALSO...STORMS NORTH OF
ORLANDO AROUND THE OCALA NATIONAL FOREST HAVE HAD A HISTORY OF FREQUENT
LIGHTNING STRIKES...AND ANY STORM THIS AFTERNOON SHOULD BE CAPABLE OF
THE SAME AMOUNT OF LIGHTNING.

PEOPLE AROUND THE ORLANDO METRO AREA SHOULD BE ALERT FOR THESE
THUNDERSTORMS AND REMEMBER THE COMMON SENSE PRECAUTIONS THAT SHOULD BE
TAKEN AS THUNDERSTORMS APPROACH.
Special weather statement, May 29, 3:50 PM EDT, 4 hours 17 minutes before
FLZ011-292045-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
348 PM EDT SAT MAY 29 1993

...THUNDERSTORMS WITH VERY HEAVY RAIN AROUND ORLANDO...

AT 345 PM...THUNDERSTORMS WITH VERY HEAVY RAIN WERE SCATTERED FROM
WEST OF MELBOURNE TO ST CLOUD...ORLANDO AND LAKE APOPKA. THESE STORMS
WERE MOVING NORTH AT 10 MPH AND WILL LIKELY RESULT IN LOCALLY HEAVY
RAINFALL AMOUNTS AND STANDING WATER ON ROADWAYS. ALSO...STORMS NORTH OF
ORLANDO AROUND THE OCALA NATIONAL FOREST HAVE HAD A HISTORY OF FREQUENT
LIGHTNING STRIKES...AND ANY STORM THIS AFTERNOON SHOULD BE CAPABLE OF
THE SAME AMOUNT OF LIGHTNING.

PEOPLE AROUND THE ORLANDO METRO AREA SHOULD BE ALERT FOR THESE
THUNDERSTORMS AN.D REMEMBER THE COMMON SENSE PRECAUTIONS THAT SHOULD BE
TAKEN AS THUNDERSTORMS APPROACH.
Special weather statement, May 29, 4:35 PM EDT, 3 hours 32 minutes before
FLZ011-292130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
435 PM EDT SAT MAY 29 1993

...SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAIN CONTINUE...

AT 435 PM...THUNDERSTORMS WITH VERY HEAVY RAINFALL WERE LOCATED FROM
SANFORD TO WINTERPARK TO EXTREME NORTHEAST OSCEOLA COUNTY WEST OF COCOA.
OTHER SHOWERS AND THUNDERSTORMS WILL CONTINUE TO DEVELOP ACROSS MUCH OF
EAST CENTRAL FLORIDA DURING THE NEXT SEVERAL HOURS. ALL ACTIVITY WAS
MOVING SLOWLY TO THE NORTH AT AROUND 10 MPH.

WITH A VERY MOIST TROPICAL AIRMASS IN PLACE ACROSS THE PENINSULA...AND
THE SLOW MOVEMENT OF THE THUNDERSTORMS...HEAVY RAINFALL POSES THE
POTENTIAL FOR LOCAL STREET FLOODING. FREQUENT CLOUD TO GROUND LIGHTNING
AND GUSTY WINDS ARE ALSO POSSIBLE WITH THESE THUNDERSTORMS.

RESIDENTS OF EAST CENTRAL FLORIDA NEED TO REMAIN ALERT AND MOVE INDOORS
AS THESE THUNDERSTORMS APPROACH. REFRAIN FROM USING TELEPHONES AND
ELECTRICAL APPLIANCES UNTIL THE STORMS PASS.

SPRATT
Special weather statement, May 29, 4:35 PM EDT, 3 hours 32 minutes before
FLZ011-292130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
435 PM EDT SAT MAY 29 1993

...SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAIN CONTINUE...

AT 435 PM...THUNDERSTORMS WITH VERY HEAVY RAINFALL WERE LOCATED FROM
SANFORD TO WINTERPARK TO EXTREME NORTHEAST OSCEOLA COUNTY WEST OF COCOA.
OTHER SHOWERS AND THUNDERSTORMS WILL CONTINUE TO DEVELOP ACROSS MUCH OF
EAST CENTRAL FLORIDA DURING THE NEXT SEVERAL HOURS. ALL ACTIVITY WAS
MOVING SLOWLY TO THE NORTH AT AROUND 10 MPH.

WITH A VERY MOIST TROPICAL AIRMASS IN PLACE ACROSS THE PENINSULA...AND
THE SLOW MOVEMENT OF THE THUNDERSTORMS...HEAVY RAINFALL POSES THE
POTENTIAL FOR LOCAL STREET FLOODING. FREQUENT CLOUD TO GROUND LIGHTNING
AND GUSTY WINDS ARE ALSO POSSIBLE WITH THESE THUNDERSTORMS.

RESIDENTS OF EAST CENTRAL FLORIDA NEED TO REMAIN ALERT AND MOVE INDOORS
AS THESE THUNDERSTORMS APPROACH. REFRAIN FROM USING TELEPHONES AND
ELECTRICAL APPLIANCES UNTIL THE STORMS PASS.

SPRATT

Nearby

Tornado Warnings in Florida, 1993Every tornado warning in 1993Tornadoes in 1993

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.