Land Management Forecasts
Issued by NWS Los Angeles, CA

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FNUS86 KLOX 232211
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ECCDA Discussions
National Weather Service Los Angeles/Oxnard CA
311 PM PDT Wed Aug 23 2017

ECC029-241615-
Los Padres National Forest-
Discussion for Vandenberg ECC Dispatch
311 PM PDT Wed Aug 23 2017

...Discussion from Los Angeles/Oxnard...

...Sundowner and I-5 corridor winds mainly Thursday night...

...Extended heat wave across the district starts this weekend...

Weak low pressure off the southwest California coast will slowly
slide eastward and dissipate by late Friday. Locally gusty north to
northwest winds will develop beginning tonight across the
I-5 corridor and Santa Ynez Mountains, then peak Thursday night as
the low pushes east. Gusts in the 25-30 mph range tonight will
increase to 35-45 mph Thursday night. Weak Sundowners are also
expected for the western canyons of the south Santa Barbara Coast
Thursday and Friday evenings. A persistent marine layer will keep
coasts and valleys in the clouds at times through Friday morning,
then clouds will be confined to the beaches over the weekend.

By Saturday a large high pressure system starts to expand across the
desert Southwest and into southern California. Triple digit heat
will build over the interior valleys and mountains beginning Friday
afternoon and expand to coastal valleys by Sunday. This heat wave is
likely to persist through next week and could extend into Labor Day
weekend. Humidities will drop into the teens for the mountains and
Antelope Valley Friday and Saturday afternoons, then locally single
digits Sunday and beyond. Poor overnight humidity recoveries are
expected with warm nighttime temperatures for foothill communities.
This could be the most extensive heat event of the summer with days
of critical fire weather not quite reaching the combination of wind
and humidity criteria for red flag conditions. The last local heat
wave occurred from about July 6th through July 10th.


...Discussion from Monterey...

A moderately deep marine layer will gradually become compressed by
late week and this weekend due to a strengthening high pressure
system. Dry weather will continue while temperatures trend warmer
away from the marine layer.

Note : All winds are 20-foot Winds Unless otherwise specified.
Thunderstorms imply strong, gusty and erratic winds.



$$

ECC028-241615-
Santa Barbara County excluding Los Padres National Forest-
Discussion for Santa Barbara ECC Dispatch
311 PM PDT Wed Aug 23 2017

...Sundowner and I-5 corridor winds mainly Thursday night...

...Extended heat wave across the district starts this weekend...

Weak low pressure off the southwest California coast will slowly
slide eastward and dissipate by late Friday. Locally gusty north to
northwest winds will develop beginning tonight across the
I-5 corridor and Santa Ynez Mountains, then peak Thursday night as
the low pushes east. Gusts in the 25-30 mph range tonight will
increase to 35-45 mph Thursday night. Weak Sundowners are also
expected for the western canyons of the south Santa Barbara Coast
Thursday and Friday evenings. A persistent marine layer will keep
coasts and valleys in the clouds at times through Friday morning,
then clouds will be confined to the beaches over the weekend.

By Saturday a large high pressure system starts to expand across the
desert Southwest and into southern California. Triple digit heat
will build over the interior valleys and mountains beginning Friday
afternoon and expand to coastal valleys by Sunday. This heat wave is
likely to persist through next week and could extend into Labor Day
weekend. Humidities will drop into the teens for the mountains and
Antelope Valley Friday and Saturday afternoons, then locally single
digits Sunday and beyond. Poor overnight humidity recoveries are
expected with warm nighttime temperatures for foothill communities.
This could be the most extensive heat event of the summer with days
of critical fire weather not quite reaching the combination of wind
and humidity criteria for red flag conditions. The last local heat
wave occurred from about July 6th through July 10th.


$$

ECC031-241615-
Angeles National Forest-
Discussion for Lancaster ECC Dispatch
311 PM PDT Wed Aug 23 2017

...Sundowner and I-5 corridor winds mainly Thursday night...

...Extended heat wave across the district starts this weekend...

Weak low pressure off the southwest California coast will slowly
slide eastward and dissipate by late Friday. Locally gusty north to
northwest winds will develop beginning tonight across the
I-5 corridor and Santa Ynez Mountains, then peak Thursday night as
the low pushes east. Gusts in the 25-30 mph range tonight will
increase to 35-45 mph Thursday night. Weak Sundowners are also
expected for the western canyons of the south Santa Barbara Coast
Thursday and Friday evenings. A persistent marine layer will keep
coasts and valleys in the clouds at times through Friday morning,
then clouds will be confined to the beaches over the weekend.

By Saturday a large high pressure system starts to expand across the
desert Southwest and into southern California. Triple digit heat
will build over the interior valleys and mountains beginning Friday
afternoon and expand to coastal valleys by Sunday. This heat wave is
likely to persist through next week and could extend into Labor Day
weekend. Humidities will drop into the teens for the mountains and
Antelope Valley Friday and Saturday afternoons, then locally single
digits Sunday and beyond. Poor overnight humidity recoveries are
expected with warm nighttime temperatures for foothill communities.
This could be the most extensive heat event of the summer with days
of critical fire weather not quite reaching the combination of wind
and humidity criteria for red flag conditions. The last local heat
wave occurred from about July 6th through July 10th.


$$

ECC024-241615-
San Luis Obispo County-
Discussion for San Luis Obispo ECC Dispatch
311 PM PDT Wed Aug 23 2017

...Sundowner and I-5 corridor winds mainly Thursday night...

...Extended heat wave across the district starts this weekend...

Weak low pressure off the southwest California coast will slowly
slide eastward and dissipate by late Friday. Locally gusty north to
northwest winds will develop beginning tonight across the
I-5 corridor and Santa Ynez Mountains, then peak Thursday night as
the low pushes east. Gusts in the 25-30 mph range tonight will
increase to 35-45 mph Thursday night. Weak Sundowners are also
expected for the western canyons of the south Santa Barbara Coast
Thursday and Friday evenings. A persistent marine layer will keep
coasts and valleys in the clouds at times through Friday morning,
then clouds will be confined to the beaches over the weekend.

By Saturday a large high pressure system starts to expand across the
desert Southwest and into southern California. Triple digit heat
will build over the interior valleys and mountains beginning Friday
afternoon and expand to coastal valleys by Sunday. This heat wave is
likely to persist through next week and could extend into Labor Day
weekend. Humidities will drop into the teens for the mountains and
Antelope Valley Friday and Saturday afternoons, then locally single
digits Sunday and beyond. Poor overnight humidity recoveries are
expected with warm nighttime temperatures for foothill communities.
This could be the most extensive heat event of the summer with days
of critical fire weather not quite reaching the combination of wind
and humidity criteria for red flag conditions. The last local heat
wave occurred from about July 6th through July 10th.


$$

ECC032-241615-
Ventura County excluding Los Padres National Forest-
Discussion for Ventura ECC Dispatch
311 PM PDT Wed Aug 23 2017

...Sundowner and I-5 corridor winds mainly Thursday night...

...Extended heat wave across the district starts this weekend...

Weak low pressure off the southwest California coast will slowly
slide eastward and dissipate by late Friday. Locally gusty north to
northwest winds will develop beginning tonight across the
I-5 corridor and Santa Ynez Mountains, then peak Thursday night as
the low pushes east. Gusts in the 25-30 mph range tonight will
increase to 35-45 mph Thursday night. Weak Sundowners are also
expected for the western canyons of the south Santa Barbara Coast
Thursday and Friday evenings. A persistent marine layer will keep
coasts and valleys in the clouds at times through Friday morning,
then clouds will be confined to the beaches over the weekend.

By Saturday a large high pressure system starts to expand across the
desert Southwest and into southern California. Triple digit heat
will build over the interior valleys and mountains beginning Friday
afternoon and expand to coastal valleys by Sunday. This heat wave is
likely to persist through next week and could extend into Labor Day
weekend. Humidities will drop into the teens for the mountains and
Antelope Valley Friday and Saturday afternoons, then locally single
digits Sunday and beyond. Poor overnight humidity recoveries are
expected with warm nighttime temperatures for foothill communities.
This could be the most extensive heat event of the summer with days
of critical fire weather not quite reaching the combination of wind
and humidity criteria for red flag conditions. The last local heat
wave occurred from about July 6th through July 10th.


$$

ECC030-241615-
Los Angeles County excluding Angeles National Forest-
Discussion for Los Angeles ECC Dispatch
311 PM PDT Wed Aug 23 2017

...Sundowner and I-5 corridor winds mainly Thursday night...

...Extended heat wave across the district starts this weekend...

Weak low pressure off the southwest California coast will slowly
slide eastward and dissipate by late Friday. Locally gusty north to
northwest winds will develop beginning tonight across the
I-5 corridor and Santa Ynez Mountains, then peak Thursday night as
the low pushes east. Gusts in the 25-30 mph range tonight will
increase to 35-45 mph Thursday night. Weak Sundowners are also
expected for the western canyons of the south Santa Barbara Coast
Thursday and Friday evenings. A persistent marine layer will keep
coasts and valleys in the clouds at times through Friday morning,
then clouds will be confined to the beaches over the weekend.

By Saturday a large high pressure system starts to expand across the
desert Southwest and into southern California. Triple digit heat
will build over the interior valleys and mountains beginning Friday
afternoon and expand to coastal valleys by Sunday. This heat wave is
likely to persist through next week and could extend into Labor Day
weekend. Humidities will drop into the teens for the mountains and
Antelope Valley Friday and Saturday afternoons, then locally single
digits Sunday and beyond. Poor overnight humidity recoveries are
expected with warm nighttime temperatures for foothill communities.
This could be the most extensive heat event of the summer with days
of critical fire weather not quite reaching the combination of wind
and humidity criteria for red flag conditions. The last local heat
wave occurred from about July 6th through July 10th.


$$


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