Alert archive / Florida / Tornado Warnings in 2007

Tornado Warning 27, NWS Melbourne, FL

December 16, 2007Lake County, Florida

NWS Melbourne, FL issued this tornado warning at Dec 16, 2007, 5:50 AM EST for Lake County, Florida. It was in force for 25 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: Dec 16, 2007, 5:50 AM EST (10:50 UTC)
Expired: Dec 16, 2007, 6:15 AM EST
In force: 25 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon

County Lake County, FL

The radar

The Tampa radar (KTBW), 97 km from the middle of the area, began a volume at 10:50 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
Dec 15, 9:42 PM EST	Tornado Watch	SPC	8 hr

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 00:00Z, 10.8 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: 660 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 839 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 129 m²/s²
0-3 km storm-relative helicity: 143 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.3

Open this sounding in Storm Lab

The text

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

000 
WFUS52 KMLB 161051
TORMLB
FLC069-161115-
/O.NEW.KMLB.TO.W.0027.071216T1050Z-071216T1115Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE MELBOURNE FL
550 AM EST SUN DEC 16 2007

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* TORNADO WARNING FOR...
  EXTREME SOUTHERN LAKE COUNTY IN EAST CENTRAL FLORIDA...

* UNTIL 615 AM EST

* AT 550 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 10 MILES WEST OF
  WITHLA...OR ABOUT 19 MILES SOUTHWEST OF MASCOTTE...MOVING EAST AT
  30 MPH.

* THE TORNADO WILL BE NEAR...
  WITHLA BY 605 AM EST...

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.

TORNADOES AT NIGHT ARE DIFFICULT TO SEE. WATCH FOR THE POPPING OF
ELECTRIC LINES AND TRANSFORMERS OR LISTEN FOR THE SOUND OF LOUD
RUMBLING AS THAT OF AN APPROACHING FREIGHT TRAIN. TORNADOES ARE OFTEN
ASSOCIATED WITH STORMS WHICH ALSO PRODUCE LARGE HAIL AND EXCESSIVE
LIGHTNING.

LAT...LON 2851 8164 2840 8163 2828 8170 2828 8176
      2833 8180 2833 8193 2837 8199 2846 8199
TIME...MOT...LOC 1050Z 264DEG 29KT 2833 8201

$$

JP

1 follow-up statement

000 
WWUS52 KMLB 161114
SVSMLB

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MELBOURNE FL
614 AM EST SUN DEC 16 2007

FLC069-161124-
/O.EXP.KMLB.TO.W.0027.000000T0000Z-071216T1115Z/
LAKE FL-
614 AM EST SUN DEC 16 2007

...THE TORNADO WARNING FOR EXTREME SOUTH LAKE COUNTY EXPIRES AT 615 
AM EST...

NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THE SEVERE STORM 
THAT PROMPTED THE WARNING HAD WEAKENED AND NO LONGER APPEARED 
CAPABLE OF PRODUCING TORNADOES OR OTHER SEVERE WEATHER...THUS THE 
WARNING HAS BEEN ALLOWED TO EXPIRE. HOWEVER...HEAVY RAIN AND 
DANGEROUS LIGHTNING STRIKES WILL CONTINUE TO BE POSSIBLE.

LAT...LON 2851 8164 2840 8163 2828 8170 2828 8176
      2833 8180 2833 8193 2837 8199 2846 8199
TIME...MOT...LOC 1114Z 264DEG 29KT 2835 8179

$$

JP

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 16, 3:52 AM EST	Wind Chill Advisory	MLB	Lake, Orange, Osceola, Seminole, Volusia	29 hr
Dec 16, 4:51 AM EST	Fire Weather Watch	MLB	Lake, Orange, Osceola, Seminole, Volusia	24 hr
Dec 16, 6:35 AM EST	Tornado Warning	MLB	Lake, Volusia	25 min
Dec 16, 6:56 AM EST	Tornado Warning	MLB	Seminole, Volusia	35 min
Dec 16, 7:12 AM EST	Special Marine Warning	MLB		93 min
Dec 16, 10:58 AM EST	Lake Wind Advisory	MLB	Lake, Okeechobee, Orange, Osceola, Seminole, Volusia	6 hr

Nearby

Tornado Warnings in Florida, 2007 Every tornado warning in 2007 Tornadoes in 2007

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.