Alert archive / Florida / Tornado Warnings in 1999

Tornado Warning 9, NWS Melbourne, FL

May 28, 1999Orange County, Florida

NWS Melbourne, FL issued this tornado warning at May 28, 1999, 6:47 PM EDT for Orange County, Florida. It was in force for 48 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
May 28, 1999, 6:47 PM EDT (22:47 UTC)
Expired
May 28, 1999, 7:35 PM EDT
In force
48 min
Issued by
NWS Melbourne, FL
Area
Whole counties

County Orange County, FL

The radar

The Melbourne radar (KMLB), 79 km from the middle of the area, began a volume at 22:51 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 12:00Z, 10.8 hours before the alert went out and 139 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 1999-05-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 45 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 1999-05-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 19 square meters per square second.193958Sfc1 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
45 J/kg
Mixed-layer CIN
-88 J/kg
Mixed-layer LCL
911 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
19 m²/s²
0-3 km storm-relative helicity
55 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 282251 COR
TORMLB
FLC095-282335-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING...CORRECTED TIME
NATIONAL WEATHER SERVICE MELBOURNE FL
647 PM EDT FRI MAY 28 1999

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* TORNADO WARNING FOR...
     ORANGE COUNTY IN EAST CENTRAL FLORIDA

* UNTIL 735 PM EDT

* AT 645 PM... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  THUNDERSTORM CAPABLE OF PRODUCING A TORNADO JUST WEST OF THE COUNTY
  LINE APPROACHING THE DISNEY COMPLEX AND THE ATTRACTIONS AREA.
  MOVEMENT WAS SOUTHEAST AT 15 MPH.

* THE TORNADO IS EXPECTED TO BE NEAR...
  THE ATTRACTIONS AREA AND VINELAND THROUGH 730 PM.

THIS STORM HAS DOWNED NUMEROUS TREES AND POWER LINES FROM LEESBURG
TO CLERMONT.

IF YOU ARE IN THE PATH OF A TORNADO...ABANDON CARS AND MOBILE
HOMES FOR A REINFORCED BUILDING OR GET INTO A DITCH OR CULVERT.
THE SAFEST PLACE IS AN INTERIOR ROOM SUCH AS A CLOSET ON THE LOWEST
FLOOR OF A STRONG BUILDING. AVOID WINDOWS.

The office that day

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

IssuedProductOfficeCountiesLasted
May 28, 4:06 PM EDTTornado WarningMLBIndian River49 min
May 28, 4:29 PM EDTSevere Thunderstorm WarningMLBSeminole46 min
May 28, 5:47 PM EDTSevere Thunderstorm WarningMLBLake58 min
May 28, 6:42 PM EDTTornado WarningMLBLake33 min
May 28, 7:14 PM EDTTornado WarningMLBOsceola56 min

Nearby

Tornado Warnings in Florida, 1999Every tornado warning in 1999Tornadoes in 1999

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.