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Gale Warning

Offshore Waters Forecast...RESENT
NWS Ocean Prediction Center Washington DC
802 AM PDT Sun Mar 18 2018

California waters-
Inner waters from  60 nm to 150 nm offshore.
Outer waters from 150 nm to 250 nm offshore.

Seas given as significant wave height, which is the average
height of the highest 1/3 of the waves. Individual waves may be
more than twice the significant wave height.

Pigeon Point to Point Piedras Blancas between 150 nm and 250 nm
802 AM PDT Sun Mar 18 2018


.TODAY...S winds less than 10 kt, becoming SE. Seas 5 to 6 ft.
.TONIGHT...SE winds 5 to 15 kt, increasing to 10 to 20 kt. Seas 5 to
6 ft.
.MON...E to SE winds 15 to 25 kt. Seas 4 to 7 ft.
.MON NIGHT...SE winds increasing to 25 to 35 kt. Seas building to 7
to 12 ft. Chance of rain.
.TUE...S to SE winds 20 to 30 kt. Seas 7 to 12 ft.
.TUE NIGHT...S to SW winds diminishing to 5 to 15 kt, then becoming
S 15 to 25 kt. Seas 8 to 9 ft.
.WED...S winds 20 to 30 kt, becoming SW 25 to 35 kt. Seas 8 to 11
ft, building to 10 to 17 ft.
.WED NIGHT...Winds veering to NW 20 to 30 kt. Seas becoming 12 to 18
.THU...W winds 20 to 30 kt. Seas 12 to 16 ft.
.THU NIGHT...W winds 15 to 25 kt. Seas 12 to 16 ft.


Hydrologic Outlook

Hydrologic Outlook

Hydrologic Outlook
National Weather Service Los Angeles/Oxnard CA
515 PM PDT Sat Mar 17 2018


A strong pacific storm system will tap into a long fetch of
deep subtropical moisture, bringing the potential for a very wet
and long duration storm event for Southwest California Tuesday
through Thursday night. This atmospheric river event will likely
bring the highest rainfall totals to some portions of Southwest
California so far this season.

There is the potential for a prolonged period of moderate to
heavy rainfall with this system, with the highest rainfall
intensities expected to occur sometime between late Tuesday night
and early Thursday. During this time, rainfall rates will likely
exceed USGS thresholds, bringing a threat of significant flash
flooding and debris flows in recent burn areas. These burn areas
potentially include the Thomas, Whittier, Creek, and La Tuna burn
scars. There is some uncertainty in the positioning of heaviest
rainfall with this system, but areas under the heaviest rainfall
are projected to see rainfall rates ranging between 0.50 and 0.75
inch per hour, with a chance of reaching as high as 1.00 inch per
hour in isolated locations.

In addition to the flash flooding and debris flow risk in recent
burn areas, there will be other flooding threats in non-burn areas
due to the long duration and intensity of this storm. There is
the potential for widespread urban roadway flooding as well as
rockslides and mudslides, especially near canyon roadways. As a
result, there could be significant travel delays and road
closures. Also, there is the potential for flooding of creeks and
small steams.

As we draw closer to this event, Flash Flood Watches will likely
be needed, especially for many of the recent burn areas. Pay
close to the latest updates and follow instructions from your
local emergency officials.



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