Alert archive / Florida / Tornado Warnings in 2007

Tornado Warning 28, NWS Melbourne, FL

December 16, 2007Lake County, Volusia County, Florida

NWS Melbourne, FL issued this tornado warning at Dec 16, 2007, 6:35 AM EST for Lake County, Volusia County, Florida. It was in force for 25 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Dec 16, 2007, 6:35 AM EST (11:35 UTC)
Expired: Dec 16, 2007, 7:00 AM EST
In force: 25 min
Issued by: NWS Melbourne, FL
Area: Storm-based polygon

Counties Lake County, FL, Volusia County, FL

The radar

The Melbourne radar (KMLB), 114 km from the middle of the area, began a volume at 11:37 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
Dec 16, 6:45 AM EST	TSTM WND DMG	De Land, FL	A VERY SMALL AREA OF LARGE TREES IN VICINITY OF SOUTH RDIGEWOOD AVE. POWER LINES DOWN
Dec 16, 7:10 AM EST	TSTM WND DMG	De Land, FL	TREE LIMBS DOWN ON POWER LINES

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

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 16, 6:15 AM EST	Tornado Watch	SPC	107 min

The nearest sounding before it

Tampa Bay, FL (KTBW), launched 00:00Z, 11.6 hours before the alert went out and 165 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 161135
TORMLB
FLC069-127-161200-
/O.NEW.KMLB.TO.W.0028.071216T1135Z-071216T1200Z/

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

THE NATIONAL WEATHER SERVICE IN MELBOURNE HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL LAKE COUNTY IN EAST CENTRAL FLORIDA...
  THIS INCLUDES THE CITIES OF...PAISLEY...MOUNT PLYMOUTH...MOUNT
  DORA...CASSIA...
  WEST CENTRAL VOLUSIA COUNTY IN EAST CENTRAL FLORIDA...
  THIS INCLUDES THE CITIES OF...ORANGE CITY...DE LEON SPRINGS...
  DELAND...LAKE HELEN...

* UNTIL 700 AM EST

* AT 634 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR MOUNT
  PLYMOUTH...MOVING NORTHEAST AT 45 MPH.

* THE TORNADO WILL BE NEAR...
  CASSIA AND 7 MILES SOUTHEAST OF PAISLEY BY 640 AM EST...
  7 MILES NORTHWEST OF DE BARY BY 650 AM EST...
  ORANGE CITY BY 655 AM EST...
  DE LAND...LAKE HELEN AND 8 MILES SOUTHEAST OF DE LEON SPRINGS BY
  700 AM EST...

THE IMMEDIATE DANGER OF A TORNADO IS HIGH. PEOPLE IN THE PATH OF THIS
DEVELOPING TORNADO ARE URGED TO QUICKLY PREPARE FOR ITS APPROACH.
THIS IS A DANGEROUS SITUATION ACT NOW...SECONDS CAN SAVE LIVES

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 SUCH AS A
BATHROOM OR CLOSET. KEEP AWAY FROM WINDOWS. IF NECESSARY...GET UNDER
A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. USE BLANKETS OR
PILLOWS TO COVER YOUR BODY. ABANDON YOUR MOBILE HOME OR RV FOR MORE
SUBSTANTIAL SHELTER. IF YOU ARE CAUGHT OUTSIDE...GET INTO AN
UNFLOODED DITCH OR LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS AND
ARMS. ABANDON YOUR VEHICLE IF THE TORNADO IS NEARBY.

IF YOU ARE DRIVING AND YOU SEE A TORNADO IN THE DISTANCE IN FRONT OF
YOU...SAFELY PULL TO THE SIDE OF THE ROAD WITHOUT BLOCKING TRAFFIC.
DETERMINE IF THE TORNADO IS APPROACHING AND BE PREPARED TO ACT. IF A
TORNADO IS IN THE DISTANCE BEHIND YOU...KEEP DRIVING AWAY FROM THE
TORNADO AS LONG AS YOU ARE FAMILIAR WITH AREA ROADS. IMPORTANTLY...IF
THE TORNADO IS NEARBY...IN ANY DIRECTION...ABANDON YOUR VEHICLE. DO
NOT TRY TO OUTRUN A NEARBY TORNADO.

THE TORNADO WILL LIKELY BE WRAPPED IN HEAVY RAIN MAKING IT DIFFICULT
TO SEE. BE SMART AND REACT NOW

LAT...LON 2896 8116 2885 8135 2885 8138 2875 8151
      2879 8162 2886 8169 2916 8132
TIME...MOT...LOC 1135Z 233DEG 43KT 2885 8154

$$

1 follow-up statement

000 
WWUS52 KMLB 161150
SVSMLB

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

FLC069-127-161200-
/O.CON.KMLB.TO.W.0028.000000T0000Z-071216T1200Z/
LAKE FL-VOLUSIA FL-
650 AM EST SUN DEC 16 2007

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 AM EST FOR CENTRAL
VOLUSIA AND EAST CENTRAL LAKE COUNTIES...

AT 650 AM EST...WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A
SEVERE THUNDERSTORM WITH VERY STRONG ROTATION.  THIS RADAR INDICATED 
TORNADO WAS LOCATED NEAR HONTOON ISLAND STATE PARK...OR JUST SOUTH 
OF CASSIA...MOVING NORTHEAST AT 45 MPH.

THE TORNADO WILL BE NEAR...
  ORANGE CITY BY 655 AM EST...DE LAND...DAYTONA PARK ESTATES AND     
  LAKE HELEN BY 700 AM EST...

HEAVY RAINFALL MAY OBSCURE THIS TORNADO. TAKE COVER NOW IF YOU WAIT
TO SEE OR HEAR IT COMING...IT MAY BE TOO LATE TO GET TO A SAFE PLACE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 AM EST SUNDAY MORNING FOR
EAST CENTRAL FLORIDA.

LAT...LON 2896 8116 2885 8135 2885 8138 2875 8151
      2879 8162 2886 8169 2916 8132
TIME...MOT...LOC 1148Z 233DEG 43KT 2894 8140

$$

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, 5:50 AM EST	Tornado Warning	MLB	Lake	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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.