Alert archive / Florida / Tornado Warnings in 1997

Tornado Warning 12, NWS Melbourne, FL

April 28, 1997Seminole County, Florida

NWS Melbourne, FL issued this tornado warning at Apr 28, 1997, 2:10 PM EDT for Seminole County, Florida. It was in force for 45 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: Apr 28, 1997, 2:10 PM EDT (18:10 UTC)
Expired: Apr 28, 1997, 2:55 PM EDT
In force: 45 min
Issued by: NWS Melbourne, FL
Area: Whole counties

County Seminole County, FL

The radar

The Melbourne radar (KMLB), 88 km from the middle of the area, began a volume at 18:13 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.

What was reported inside it

Time	Report	Where	Remark
Apr 28, 2:30 PM EDT	Thunderstorm Wind	Oviedo, FL	Thunderstorm winds blew down a large tree and damaged a school in Oviedo.
Apr 28, 2:30 PM EDT	Thunderstorm Wind	Oviedo, FL	Thunderstorm winds blew down a large tree and damaged a school in Oviedo.

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.

The watch it was issued in

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

Issued	Product	Office	Lasted
Apr 28, 12:30 PM EDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 12:00Z, 6.2 hours before the alert went out and 160 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: 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.

370 
WFUS01 KMLB 281808 RRA
TORMLB
FLC117-281855-

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

THE NATIONAL WEATHER SERVICE IN MELBOURNE FL HAS ISSUED A
TORNADO WARNING EFFECTIVE UNTIL 255 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN EAST CENTRAL FLORIDA

   ...SEMINOLE COUNTY
 
AT 207 PM EDT...WEATHER RADAR INDICATED A SEVERE THUNDERSTORM WITH A
POSSIBLE TORNADO JUST NORTH OF BITHLO NEAR THE ORANGE COUNTY AND
SEMINOLE COUNTY LINE.  THE STORM WILL AFFECT THE OVIEDO AND LAKE
HARNEY AREAS.
 
CARS AND MOBILE HOMES CAN BE TOSSED ABOUT BY TORNADO WINDS. DO NOT
TRY TO OUTRUN A TORNADO IN YOUR VEHICLE. ABANDON VEHICLES AND MOBILE
HOMES WHEN THREATENED BY A TORNADO AND GO TO A STRONG BUILDING. IF NO
STRUCTURE IS NEARBY...SEEK SHELTER IN A DITCH OR LOW SPOT.

SHARP

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 28, 1:13 PM EDT	Tornado Warning	MLB	Osceola	42 min
Apr 28, 1:33 PM EDT	Tornado Warning	MLB	Orange	62 min
Apr 28, 2:07 PM EDT	Tornado Warning	MLB	Osceola	53 min
Apr 28, 2:13 PM EDT	Tornado Warning	MLB	Volusia	62 min
Apr 28, 2:33 PM EDT	Tornado Warning	MLB	Brevard	62 min
Apr 28, 3:12 PM EDT	Tornado Warning	MLB	Indian River	63 min

Nearby

Tornado Warnings in Florida, 1997 Every tornado warning in 1997 Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.