Alert archive / Florida / Tornado Warnings in 2008

Tornado Warning 25, NWS Melbourne, FL

September 10, 2008Osceola County, Florida

NWS Melbourne, FL issued this tornado warning at Sep 10, 2008, 5:04 PM EDT for Osceola County, Florida. It was in force for 41 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Sep 10, 2008, 5:04 PM EDT (21:04 UTC)
Expired: Sep 10, 2008, 5:45 PM EDT
In force: 41 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon

County Osceola County, FL

The radar

The Melbourne radar (KMLB), 73 km from the middle of the area, began a volume at 21:06 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

Cape Canaveral, FL (KXMR), launched 12:00Z, 9.1 hours before the alert went out and 96 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: 1214 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 732 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: 15 m²/s²
0-3 km storm-relative helicity: 3 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 
WFUS52 KMLB 102104
TORMLB
FLC097-102145-
/O.NEW.KMLB.TO.W.0025.080910T2104Z-080910T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
504 PM EDT WED SEP 10 2008

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN OSCEOLA COUNTY IN EAST CENTRAL FLORIDA...
  THIS INCLUDES THE CITIES OF...WEST LAKE TOHO...SAINT CLOUD...LAKE
  KISSIMMEE...KISSIMMEE...INTERCESSION CITY...EAST LAKE TOHO...BUENA
  VENTURA LAKES...

* UNTIL 545 PM EDT

* AT 501 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR LAKE
  KISSIMMEE...MOVING NORTH AT 24 MPH.

* THE TORNADO WILL BE NEAR...
  WEST LAKE TOHO...POINCIANA...AND 7 MILES SOUTHEAST OF CAMPBELL BY  
  545 PM EDT...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A STRONG BUILDING ON
THE LOWEST FLOOR...IN AN INTERIOR ROOM SUCH AS A BATHROOM OR CLOSET.
KEEP AWAY FROM WINDOWS. GET UNDER A WORKBENCH OR OTHER PIECE OF
STURDY FURNITURE. USE BLANKETS OR PILLOWS TO COVER YOUR BODY.

EVACUATE MOBILE HOMES OR VEHICLES FOR MORE SUBSTANTIAL SHELTER. IF NO
SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS. ABANDON YOUR VEHICLE IF THE
TORNADO IS NEARBY.

LAT...LON 2834 8137 2834 8130 2791 8116 2786 8130
      2799 8139 2800 8141 2806 8146 2806 8145
      2802 8138 2807 8135 2808 8146 2813 8146
      2813 8150 2828 8157
TIME...MOT...LOC 2104Z 160DEG 21KT 2796 8129

$$

KELLY

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 10, 1:22 PM EDT	Severe Thunderstorm Warning	MLB	Osceola	38 min
Sep 10, 1:37 PM EDT	Severe Thunderstorm Warning	MLB	Brevard	24 min
Sep 10, 2:00 PM EDT	Severe Thunderstorm Warning	MLB	Orange	45 min
Sep 10, 5:45 PM EDT	Tornado Warning	MLB	Osceola	60 min
Sep 10, 7:28 PM EDT	Special Marine Warning	MLB		62 min

Nearby

Tornado Warnings in Florida, 2008 Every tornado warning in 2008 Tornadoes in 2008

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.