Area Forecast Discussion
Issued by NWS Eureka, CA
FXUS66 KEKA 281018
AREA FORECAST DISCUSSION
National Weather Service Eureka CA
318 AM PDT Fri Apr 28 2017
.SYNOPSIS...Dry mild conditions will persist across much of the
region during the next week. In addition, high pressure located
offshore over the Pacific will aid in breezy northerly winds along
.DISCUSSION...An upper ridge and associated surface high pressure
were present offshore over the Pacific Friday morning. The ridge
is producing generally clear skies over interior locations, with
valley temperatures subsequently flirting with frost advisory
criteria. Similar temperatures are expected Saturday night. An
enhanced pressure gradient will also be present on the east side
of the high, resulting in breezy northerly winds gusting to 30
mph along the coast.
Dry weather and mild afternoon temperatures are expected through
much of the next week. One exception will be the far northern
coast during Sunday, where a slight chance of showers will exist
as a minor upper disturbance moves across WRN WA/OR. Otherwise,
midlevel temperatures are forecast to warm beneath the upper
ridge, which will lead to a strengthening boundary layer inversion
that could favor marine stratus development.
.AVIATION...VFR conditions with a few high levels clouds will
prevail at all terminals through today. Some patches of MVFR
ceilings have been lurking in the Eel delta overnight but should
erode by daybreak. Gusty northerly and northwesterly winds will
develop this afternoon and evening, primarily at the coastal
terminals. An easterly wind flow pattern will emerge late tonight.
Therefore, VFR conditions are anticipated to persist at all
.MARINE...Northerlies will prevail through the forecast period as
the East Pacific High establishes over the area. The northerly
pressure gradient off the NW California coast will be moderately
tight through the weekend. Winds will be enhanced this afternoon
and evening as the pressure gradient tightens. Occasional gusts
may get to 35 kt, especially in the lee of Cape Mendocino and Pt
St George this afternoon and evening. A small craft advisory
remains in effect for all waters today through tonight.
Northerly winds will ease up Sat and Sat night, then ramp up
again by Sun Night after a weak front passes to our north.
Northerly winds in the southern waters will remain at or near
small craft advisory level through the weekend, however.
The northerly flow pattern is forecast to persist through next
week as high pressure remains firmly entrenched offshore. Periodic
weather disturbances will disrupt the strength of the northerlies
north of Cape Mendocino. South of the Cape, winds will remain
strong enough to generate steep and hazardous seas through mid
NORTHWEST CALIFORNIA COASTAL WATERS...Small Craft Advisory until
3 AM PDT Saturday for PZZ450-455.
Small Craft Advisory until 9 AM PDT Saturday for PZZ470.
Small Craft Advisory until 5 AM PDT Wednesday for PZZ475.
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