Red Flag Warning
Issued by NWS Los Angeles, CA

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WWUS86 KLOX 161746
RFWLOX

URGENT - FIRE WEATHER MESSAGE
National Weather Service Los Angeles/Oxnard CA
946 AM PST Sat Dec 16 2017

...RED FLAG WARNING IN EFFECT UNTIL 10 PM PST THIS EVENING FOR
THE SANTA BARBARA COUNTY MOUNTAINS AND SOUTH COAST DUE TO GUSTY
NORTH TO NORTHEAST WINDS AND LOW RELATIVE HUMIDITY...

...RED FLAG WARNING IN EFFECT FOR MUCH OF LOS ANGELES AND VENTURA
COUNTIES LATE TONIGHT THROUGH SUNDAY EVENING...

.DISCUSSION...
Strong upper level winds behind the passage of an upper level disturbance
combined with strengthening north-south pressure gradients caused
a significant increase in winds across the Santa Barbara county
mountains and south coast this morning, causing major impacts
on the Thomas Fire. Wind gusts of 35 to 50 mph have been common this morning
across these areas, with isolated gusts up to 65 mph being observed
in the Montecito Hills. While humidities have modified somewhat this
morning, the strong north to northeast winds through this evening
will continue to maintain dangerous Red Flag conditions for the Santa
Barbara county mountains and south coast. As a result of these strong winds,
there will be very rapid fire spread, long range spotting, and extreme
fire behavior observed at the Thomas Fire and any new fire ignitions.
In addition, there will be gusty north winds across the Ventura county
mountains today, especially near the Highway 33 and Interstate 5 corridors
which will impact the Ventura county portion of the Thomas Fire.

For the remainder of Ventura and Los Angeles Counties, the flow
is expected to shift to the northeast this evening, with increasing
Santa Ana winds overnight into Sunday when gusts between 35 and 55 mph will
be likely. A Red Flag Warning is in effect for late tonight
through Sunday evening for much of Los Angeles and Ventura
Counties.


CAZ246-253-254-170000-
/O.CON.KLOX.FW.W.0011.171217T0900Z-171218T0400Z/
Santa Monica Mountains Recreational Area-
Ventura County Mountains / Los Padres National Forest-
Los Angeles County Mountains / Angeles National Forest-
946 AM PST Sat Dec 16 2017

...RED FLAG WARNING REMAINS IN EFFECT FROM 1 AM TO 8 PM PST
SUNDAY FOR GUSTY NORTHEAST WINDS AND LOW RELATIVE HUMIDITY FOR
THE MOUNTAINS OF LOS ANGELES AND VENTURA COUNTIES...

* Winds...Northeast winds increasing this evening, peaking late
  tonight into Sunday morning at 20 to 35 mph with gusts 45 to 55
  mph. Isolated gusts to 60 mph possible.

* Relative Humidity...Humidities above 15 percent will be possible
  tonight, but are expected to lower to 10 to 15 percent on
  Sunday.

* Impacts...There will be the potential for very rapid spread of
  wildfire, long range spotting, and extreme fire behavior that
  could lead to a threat to life and property. Use extreme caution
  with potential fire ignition sources.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are occurring. A combination of strong winds...low relative
humidity...and warm temperatures can contribute to extreme fire
behavior.

&&

$$

CAZ244-245-288-170000-
/O.CON.KLOX.FW.W.0011.171217T0900Z-171218T0400Z/
Ventura County Interior Valleys-Ventura County Coastal Valleys-
Santa Clarita Valley-
946 AM PST Sat Dec 16 2017

...RED FLAG WARNING REMAINS IN EFFECT FROM 1 AM TO 8 PM PST
SUNDAY FOR GUSTY NORTHEAST WINDS AND LOW RELATIVE HUMIDITY FOR
THE VENTURA COUNTY VALLEYS AND SANTA CLARITA VALLEY...

* Winds...Northeast winds are expected to increase this evening
  peaking late tonight into Sunday morning at 15 to 30 mph with
  gusts to 50 mph.

* Relative Humidity...Humidities above 15 percent will be possible
  tonight, but are expected to lower to 10 to 15 percent on
  Sunday.

* Impacts...If fire ignition occurs, there will be the potential
  for very rapid spread of wildfire, long range spotting, and
  extreme fire behavior that could lead to a threat to life and
  property. Use extreme caution with potential fire ignition
  sources.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are expected. A combination of strong winds...low relative
humidity...and warm temperatures can contribute to extreme fire
behavior.

&&

$$

CAZ252-170000-
/O.CON.KLOX.FW.W.0010.000000T0000Z-171217T0600Z/
Santa Barbara County Mountains-
946 AM PST Sat Dec 16 2017

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING FOR GUSTY NORTH TO NORTHEAST WINDS AND LOW RELATIVE
HUMIDITY FOR THE SANTA BARBARA COUNTY MOUNTAINS AND ADJACENT
FOOTHILLS...

* Winds...Areas of north to northeast winds 20 to 35 mph with
  gusts to 55 mph in the mountains and adjacent foothills.
  Isolated gusts up to 65 mph across favored ridgetops.

* Relative Humidity...Minimum values 15 to 25 percent.

* Impacts...There will be the potential for very rapid spread of
  wildfire, long range spotting, and extreme fire behavior that
  could lead to a threat to life and property. Use extreme caution
  with potential fire ignition sources.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are occurring. A combination of strong winds...low relative
humidity...and warm temperatures can contribute to extreme fire
behavior. Use extreme caution when using potential fire ignition
sources. This is a dangerous situation, please follow evacuation
orders.

&&

$$

CAZ547-170000-
/O.CON.KLOX.FW.W.0011.171217T0900Z-171218T0400Z/
Los Angeles County San Fernando Valley-
946 AM PST Sat Dec 16 2017

...RED FLAG WARNING REMAINS IN EFFECT FROM 1 AM TO 8 PM PST
SUNDAY FOR GUSTY NORTH TO NORTHEAST WINDS AND LOW RELATIVE
HUMIDITY FOR THE SAN FERNANDO VALLEY...

* Winds...Northeast winds are expected to increase this evening,
  peaking later tonight into Sunday morning at 15 to 30 mph with
  gusts to 45 mph. Strongest winds northern and western portions.

* Relative Humidity...Humidities above 15 percent will be possible
  tonight, but are expected to lower to 10 to 15 percent on
  Sunday.

* Impacts...If fire ignition occurs, there will be the potential
  for very rapid spread of wildfire, long range spotting, and
  extreme fire behavior that could lead to a threat to life and
  property. Use extreme caution with potential fire ignition
  sources.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are expected. A combination of strong winds...low relative
humidity...and warm temperatures can contribute to extreme fire
behavior.

&&

$$

CAZ239-170000-
/O.CON.KLOX.FW.W.0010.000000T0000Z-171217T0600Z/
Santa Barbara County South Coast-
946 AM PST Sat Dec 16 2017

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM PST THIS
EVENING FOR GUSTY NORTH TO NORTHEAST WINDS AND LOW RELATIVE
HUMIDITY...

* Winds...Areas of north to northeast winds 15 to 30 mph with
  gusts to 50 mph below passes and canyons. Isolated gusts to 60
  mph in the foothills. Strongest winds Santa Barbara eastward.

* Relative Humidity...Minimum values 15 to 25 percent.

* Impacts...If fire ignition occurs, there will be the potential
  for very rapid spread of wildfire, long range spotting, and
  extreme fire behavior that could lead to a threat to life and
  property. Use extreme caution with potential fire ignition
  sources.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are expected. A combination of gusty winds...low relative
humidity...and warm temperatures can contribute to extreme fire
behavior. Use extreme caution when using potential fire ignition
sources. This is a dangerous situation, please follow evacuation
orders.

&&

$$

CAZ240-241-170000-
/O.CON.KLOX.FW.W.0011.171217T1400Z-171218T0400Z/
Ventura County Coast-
Los Angeles County Coast including Downtown Los Angeles-
946 AM PST Sat Dec 16 2017

...RED FLAG WARNING REMAINS IN EFFECT FROM 6 AM TO 8 PM PST
SUNDAY FOR GUSTY NORTHEAST WINDS AND LOW RELATIVE HUMIDITY FOR
THE VENTURA COAST AND LOS ANGELES COAST FROM MALIBU TO HOLLYWOOD
HILLS...

* Winds...Northeast winds are expected to peak late Saturday
  night into Sunday morning at 15 to 25 mph with gusts 35 to 45
  mph.

* Relative Humidity...Humidities above 15 percent will be
  possible late Saturday night, but are expected to lower to 10
  to 15 percent on Sunday.

* Impacts...If fire ignition occurs, there will be the potential
  for very rapid spread of wildfire, long range spotting, and
  extreme fire behavior that could lead to a threat to life and
  property. Use extreme caution with potential fire ignition
  sources.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A Red Flag Warning means that critical fire weather conditions
are expected. A combination of strong winds...low relative
humidity...and warm temperatures can contribute to extreme fire
behavior.

&&

$$

GOMBERG



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