Alert archive / Florida / Tornado Warnings in 1997

Tornado Warning 11, NWS Melbourne, FL

April 28, 1997Osceola County, Florida

NWS Melbourne, FL issued this tornado warning at Apr 28, 1997, 2:07 PM EDT for Osceola County, Florida. It was in force for 53 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
Apr 28, 1997, 2:07 PM EDT (18:07 UTC)
Expired
Apr 28, 1997, 3:00 PM EDT
In force
53 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 18:08 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Apr 28, 12:30 PM EDTTornado WatchSPC6 hr

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 6.1 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 1997-04-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1286 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 1997-04-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 209 square meters per square second.1939587897Sfc1 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
1286 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
576 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
209 m²/s²
0-3 km storm-relative helicity
217 m²/s²
Significant tornado parameter
1.8
Supercell composite
8.2

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KMLB 281806 RRA
TORMLB
FLC097-281900-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
207 PM EDT MON APR 28 1997

THE NATIONAL WEATHER SERVICE IN MELBOURNE FL HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 300 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN EAST CENTRAL FLORIDA

   ...OSCEOLA COUNTY
 
AT 205 PM EDT...RADAR INDICATED A SEVERE THUNDERSTORM CONTAINING A
POSSIBLE TORNADO NEAR LAKE KISSIMME. THE STORM WAS MOVING NORTHEAST
AT 40 MPH. THE STORM WILL TRACK NORTHEAST THROUGH THE COUNTY FROM
HIGHWAY 60 THEN TOWARDS KENANSVILLE. THIS STORM ALREADY HAS A
HISTORY OF WIND DAMAGE AS IT PASSED THROUGH WEST CENTRAL FLORIDA.

SPRATT

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 28, 1:13 PM EDTTornado WarningMLBOsceola42 min
Apr 28, 1:33 PM EDTTornado WarningMLBOrange62 min
Apr 28, 2:10 PM EDTTornado WarningMLBSeminole45 min
Apr 28, 2:13 PM EDTTornado WarningMLBVolusia62 min
Apr 28, 2:33 PM EDTTornado WarningMLBBrevard62 min
Apr 28, 3:12 PM EDTTornado WarningMLBIndian River63 min

Nearby

Tornado Warnings in Florida, 1997Every tornado warning in 1997Tornadoes 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.