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fxus66 keka 142152 
afdeka

Area forecast discussion
National Weather Service Eureka California
252 PM PDT Mon Oct 14 2019

Synopsis...mild and dry conditions will continue through
Tuesday, with morning marine clouds along portions of the coast.
Widespread light rain is expected Wednesday, with cool and
occasionally showery conditions expected for the remainder of the
week.

&&

Discussion...skies over the interior have been mostly sunny for
most of the day. However, low clouds have been hugging the Redwood
coast along with portions of the S Mendocino coast. Expect these
clouds to eventually expand back inland along the coast this
evening with some patchy fog as well. Although low temperatures
are expected to be slightly warmer tonight than last night, some
patchy frost is possible. However, the growing season for all of
the zones that this is expected in ends tomorrow (october 15th),
so not presently planning any frost advisories.

A big pattern change is expected Wednesday as the first in a
series of cold fronts is expected to bring rainfall and cooler
temperatures to the region. While rainfall amounts are expected
to be generally light, widespread accumulations can be expected
between early Wednesday and early Thursday. Heaviest amounts can
be expected across del norte and northern Humboldt counties, where
between 1/2" and 1" accumulations can be expected. Across
southern Humboldt and western Trinity counties, between 1/4" and
1/2" can be expected, with lighter amounts expected across
Mendocino and western Trinity counties. An inch or two of snow is
possible across the highest elevations of north Trinity County late
Wednesday night.

Rain rates are expected to diminish overnight Wednesday and early
Thursday as the cold front moves inland. While cool but mostly
dry conditions can be expected across most of Mendocino and Trinity
counties Thursday through Saturday, multiple waves of showers will
move through del norte and Humboldt counties through at least
Saturday. Accumulations will be generally light, even in the areas
that see the most persistent rain throughout this period.

Beyond Saturday, a warming and drying trend is expected as high
pressure builds across the western Pacific. /Brc&sec

&&

Aviation...the marine layer brought in low visibility and lower
ceilings that lasted through the afternoon at kcec. Kacv had some
obscurations early this morning from stratus which cleared to VFR
conditions. VFR to MVFR conditions are expected at both coastal
terminals this evening. Kuki is expected to remain in VFR category
for the rest of the day. /Eys

&&

Marine...northerlies will continue to weaken through tonight,
while seas gradually subside. Southerlies will develop on Tuesday
and persist through late in the week as a series of cold fronts move
through the area. Northerlies are expected to redevelop across all
coastal zones by late on Friday. A couple of northwest swells will
impact the coastal waters over the next week. The first northwest
swell will linger through Tuesday, with a more robust northwest
swell expected to move through the waters starting overnight on
Tuesday. Wave heights are expected to be large with the later swell,
peaking around 17 feet on Thursday. Otherwise, a southwest swell
will linger for portions of the next week.

&&

Beach hazards...a large northwest swell will begin to move through the
coastal waters late on Tuesday. The swell will continue to build
through Thursday, leading to larger breaking waves on northwest California
beaches. Breaking waves around 20 feet will be possible along the
coast from mid-morning Thursday through Thursday evening leading
to increased wave run-up on beaches with waves topping and washing
over large rocks and jetties. These large waves can be erratic
and unpredictable. Beaches with a steeper slope may be
particularly dangerous. Beachgoers are urged to use extra caution
near the surf zone as these large waves will be capable of
sweeping people into the cold and turbulent ocean water. Will add
mention of this threat into the updated hazardous weather outlook.
/Sec

&&

Eka watches/warnings/advisories...
California...none.
Northwest California coastal waters...
Small Craft Advisory until 9 PM this evening for pzz470-475.

$$

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