Alert archive / Florida / Tornado Warnings in 2000

Tornado Warning 5, NWS Melbourne, FL

September 17, 2000Okeechobee County, Osceola County, Florida

NWS Melbourne, FL issued this tornado warning at Sep 17, 2000, 8:55 AM EDT for Okeechobee County, Osceola County, Florida. It was in force for 50 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: Sep 17, 2000, 8:55 AM EDT (12:55 UTC)
Expired: Sep 17, 2000, 9:45 AM EDT
In force: 50 min
Issued by: NWS Melbourne, FL
Area: Whole counties

Counties Okeechobee County, FL, Osceola County, FL

The radar

The Melbourne radar (KMLB), 56 km from the middle of the area, began a volume at 12:57 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.

Issued	Product	Office	Lasted
Sep 17, 8:00 AM EDT	Tornado Watch	SPC	3 hr

The nearest sounding before it

Cape Canaveral, FL (KXMR), launched 12:00Z, 0.9 hours before the alert went out and 97 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: 513 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 744 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 282 m²/s²
0-3 km storm-relative helicity: 557 m²/s²
Significant tornado parameter: 1.2
Supercell composite: 6.2

Open this sounding in Storm Lab

The text

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

000 
WFUS52 KMLB 171259
TORMLB

FLC093-097-171345-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
855 AM EDT SUN SEP 17 2000

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN OKEECHOBEE COUNTY
  SOUTHERN OSCEOLA COUNTY
  ...IN EAST CENTRAL FLORIDA

* UNTIL 945 AM EDT.

* AT 842 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  STORM CAPABLE OF PRODUCING A TORNADO 4 MILES SOUTHEAST OF          
  BASINGER...MOVING NORTH AT 25 MPH. OTHER STORMS OVER NORTHERN      
  OKEECHOBBEE COUNTY ARE ALSO SHOWING SIGNS OF ROTATION. SEVERAL     
  SHORT LIVED TORNADOES WILL LIKELY DEVELOP ACROSS THE WARNED        
  COUNTIES.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... YEEHAW   
JUNCTION...AS WELL AS RURAL AREAS OF NORTHERN OKEECHOEE AND SOUTHERN 
OSCEOLA COUNTIES.

TORNADOES ASSOCIATED WITH TROPICAL CYCLONES ARE OFTEN WRAPPED IN
HEAVY RAIN AND ARE HARD TO SEE OR HEAR UNTIL THEY ARE VERY CLOSE. DO
NOT GET CAUGHT OFFGUARD!

IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE IS IN A STRONG
BUILDING ON THE LOWEST FLOOR. MOVE TO AN INTERIOR ROOM AND KEEP AWAY
FROM WINDOWYS.

$$

LAT...LON 2726 8105 2733 8087 2776 8090 2770 8115

SPRATT

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 17, 9:19 AM EDT	Tornado Warning	MLB	Martin	41 min

Nearby

Tornado Warnings in Florida, 2000 Every tornado warning in 2000 Tornadoes in 2000

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.