* WHAT...South to southeast winds 30 to 50 mph with damaging gusts
up to 70 mph likely, except up to 80 mph in the mountains and
foothills.

* WHERE...All of San Luis Obispo and Santa Barbara counties, the
mountains and foothills of Los Angeles and Ventura counties, and
the Antelope Valley.

* WHEN...Until 3 PM PST Thursday.

* IMPACTS...Damaging winds are likely with this powerful Atmospheric
River storm, with widespread downed trees and powerlines likely,
as well as the potential for power outages and property damage.
Travel will be difficult, especially for high profile vehicles.
Mountain roadways and passes will be especially dangerous,
including the busy Interstate 5 near the Grapevine. The
combination of strong winds and moist soils will increase the risk
for downed trees.

Watch for falling debris and tree limbs. Use caution if you must
drive. Secure loose outdoor objects that could be blown around or
damaged by the wind.

* WHAT...South to southeast winds 25 to 40 mph with damaging gusts
up to 60 mph likely.

* WHERE...Catalina and Santa Barbara Islands, Eastern Santa Monica
Mountains Recreational Area, San Miguel and Santa Rosa Islands,
Santa Clarita Valley, Santa Cruz and Anacapa Islands, and Western
Santa Monica Mountains Recreational Area.

* WHEN...Until 3 PM PST Thursday.

* IMPACTS...Damaging winds are likely with this powerful Atmospheric
River storm, with widespread downed trees and powerlines likely,
as well as the potential for power outages and property damage.
Travel will be difficult, especially for high profile vehicles.
The combination of strong winds and moist soils will increase the
risk for downed trees.

Remain in the lower levels of your home during the windstorm, and
avoid windows. Watch for falling debris and tree limbs. Use caution
if you must drive.

* WHAT...Flooding caused by excessive rainfall is expected.

* WHERE...A portion of southwest California, including the following
counties, Southern and Southeast Santa Barbara and Ventura.

* WHEN...Until noon PST Wednesday.

* IMPACTS...Minor flooding in low-lying and poor drainage areas.
Water over roadways.

* ADDITIONAL DETAILS...
- At 1249 AM PST, Doppler radar and automated rain gauges
indicated heavy rain. Minor flooding is ongoing or expected
to begin shortly in the advisory area. Up to 2 inches of rain
have fallen.
- Some locations that will experience flooding include...
Oxnard, Thousand Oaks, Simi Valley, Ventura, Santa Barbara,
Camarillo, Lompoc, Fillmore, Ojai, Montecito, Santa Ynez,
Point Conception, Chatsworth, Moorpark, Santa Paula, Port
Hueneme, Carpinteria, Solvang, Summerland and Rincon Point.
- http://www.weather.gov/safety/flood

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.

* WHAT...Large breaking waves of 10 to 15 feet with dangerous
rip currents.

* WHERE...San Luis Obispo County Beaches and Santa Barbara
County Central Coast Beaches.

* WHEN...Until 11 AM PST Saturday.

* IMPACTS...There is an increased risk for ocean drowning. Rip
currents can pull swimmers and surfers out to sea. Large
breaking waves can cause injury, wash people off beaches and
rocks, and capsize small boats near shore.

* ADDITIONAL DETAILS...Minor to potentially isolated moderate
coastal flooding for south-facing beaches especially during
high tides. This is expected to occur from this evening
through Thursday due to strong southerly winds.

Remain out of the water due to dangerous surf conditions, or stay
near occupied lifeguard towers. Rock jetties can be deadly in
such conditions, stay off the rocks.

* WHAT...Large breaking waves of 6 to 9 feet with dangerous rip
currents.

* WHERE...Santa Barbara County Southwestern Coast and Santa
Barbara County Southeastern Coast.

* WHEN...Until 11 AM PST Saturday.

* IMPACTS...There is an increased risk for ocean drowning. Rip
currents can pull swimmers and surfers out to sea. Large
breaking waves can cause injury, wash people off beaches and
rocks, and capsize small boats near shore.

* ADDITIONAL DETAILS...Minor to potentially isolated moderate
coastal flooding for south-facing beaches especially during
high tides. This is expected to occur from this evening
through Thursday due to strong southerly winds.

Remain out of the water due to dangerous surf conditions, or stay
near occupied lifeguard towers. Rock jetties can be deadly in
such conditions, stay off the rocks.

* WHAT...Significant and widespread flooding caused by excessive
rainfall will be likely, with potential debris flow impacts across
recent burn scars.

* WHERE...A portion of southwest California, including the following
areas, Antelope Valley, Calabasas and Agoura Hills, Catalina and
Santa Barbara Islands, Central Ventura County Valleys, Cuyama
Valley, Eastern Antelope Valley Foothills, Eastern San Fernando
Valley, Eastern San Gabriel Mountains, Eastern Santa Monica
Mountains Recreational Area, Interstate 5 Corridor, Lake Casitas,
Los Angeles County Beaches, Los Angeles County Inland Coast
including Downtown Los Angeles, Los Angeles County San Gabriel
Valley, Northern Ventura County Mountains, Ojai Valley, Palos
Verdes Hills, San Luis Obispo County Beaches, San Luis Obispo
County Inland Central Coast, San Luis Obispo County Interior
Valleys, San Luis Obispo County Mountains, Santa Barbara County
Central Coast Beaches, Santa Barbara County Inland Central Coast,
Santa Barbara County Interior Mountains, Santa Barbara County
Southeastern Coast, Santa Barbara County Southwestern Coast, Santa
Clarita Valley, Santa Lucia Mountains, Santa Susana Mountains,
Santa Ynez Mountains Eastern Range, Santa Ynez Mountains Western
Range, Santa Ynez Valley, Southeastern Ventura County Valleys,
Southern Salinas Valley, Southern Ventura County Mountains,
Ventura County Beaches, Ventura County Inland Coast, Western
Antelope Valley Foothills, Western San Fernando Valley, Western
San Gabriel Mountains and Highway 14 Corridor and Western Santa
Monica Mountains Recreational Area.

* WHEN...Through Friday afternoon.

* IMPACTS...This prolonged strong Atmospheric River storm system
will bring periods of heavy rain from late Tuesday into Thursday
evening. Potential flooding impacts include the threat of
significant and widespread urban roadway flooding, a high risk of
major rock/mudslides, and rapid rises in creeks, streams, and
rivers which will likely lead to swift water rescues. The recent
burn scars will be at risk for debris flows, possibly damaging.
These flooding impacts will likely lead to significant travel
delays and road closures during this busy holiday travel period.

* ADDITIONAL DETAILS...
- Heavy rainfall with possible thunderstorms is expected with
high rainfall rates, potentially exceeding one inch per hour
during the peak of the event Tuesday night into Wednesday
across favored south facing slopes and near thunderstorms.
Another round of heavier rain and thunderstorms will be
possible on Thursday.
- http://www.weather.gov/safety/flood

You should monitor later forecasts and be alert for possible Flood
Warnings. Those living in areas prone to flooding should be prepared
to take action should flooding develop.