750
FXUS66 KEKA 181121
AFDEKA

AREA FORECAST DISCUSSION
National Weather Service Eureka CA
421 AM PDT Tue Jun 18 2024

.SYNOPSIS...Dry weather is expected for the foreseeable future.
Interior temperatures begin a slow warming trend through the work
week with temperatures approaching 100 degrees in some interior
valley locations Friday into Saturday.

&&

.DISCUSSION...
Dry conditions are expected to persist for the next week as dry air
remains in place within the mid-levels of the atmosphere over
Northwest California. Troughing the next couple days will keep
temperatures over the interior near normal through Wednesday. By
Thursday the trough will begin to break down and 850 mb
temperatures will warm across the interior allowing some interior
valleys to approach 100 degrees Friday into Saturday. All while
this is occurring, northerly winds and increasing low-level
moisture at the coast will result in increasing chances of coastal
stratus through the week with temperatures remaining near normal
at coastal sites.

Temperatures will moderate a few degrees across the interior over
the weekend into early next week but still remain several degrees
above normal.

&&

.AVIATION...Like early yesterday morning, extensive coastal stratus is
unlikely to form into this morning, however; unlike early yesterday
morning, slightly more stratus is expected to form. As of now, low
clouds are forming around Humboldt Bay and down the Eel River Valley
creating MVFR to IFR conditions. Brief periods of coastal stratus
may be likely along the Del Norte coast due to calm wind conditions
into early this morning. Winds will not be as strong at the
terminals today, but by late morning to early afternoon
northwesterly to westerly winds are forecast to pick back up. Gusts
will be strongest for Mendocino and Lake counties and along the Del
Norte Coast with high resolution models indicating gusts to 20
knots. Chances for stratus increase tonight along the coast with a
high pressure system building into the region through the rest of
the week. /JLW


&&

.MARINE...Northerly winds have decreased from yesterday, but will
remain in small craft criteria for all zones into mid morning. Winds
will pull away from the coast north of Cape Mendocino by mid to late
morning ending the small craft advisory for the northern inner zone.
Each afternoon there will be a slight uptick in northerlies with the
highest winds (still below gale conditions) occurring in the lee of
Cape Mendocino. Coverage for the expansion fan will be sufficient to
keep a small craft advisory in the southern outer waters through the
middle of the week; however, by Wednesday afternoon only a small
portion of the southern inner waters, just south of the Cape, will
have small craft winds. Due to this, the small craft advisory for
the southern inner waters will expire by Wednesday afternoon. High
resolution wind models and NBM indicate that the outer zones will
remain in small craft conditions through the middle/end of the week
with another slight increase in winds into this weekend. Seas will
remain steep through the week due to the winds, especially in the
outer waters. Two to three foot, long period westerly and
southwesterly swells will continue through the waters into the end
of the week. /JLW


&&

.EKA WATCHES/WARNINGS/ADVISORIES...
CA...
None.
NORTHWEST CALIFORNIA COASTAL WATERS...
     Small Craft Advisory until 9 AM PDT this morning for PZZ450.

     Small Craft Advisory until 3 PM PDT Wednesday for PZZ455.

     Small Craft Advisory until 3 PM PDT Thursday for PZZ470-475.

&&

$$

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For forecast zone information
see the forecast zone map online:
https://www.weather.gov/images/eka/zonemap.png