592
FXUS66 KEKA 010808
AFDEKA

AREA FORECAST DISCUSSION
National Weather Service Eureka CA
108 AM PDT Mon Jun 1 2026

.SYNOPSIS...Temperatures warm through Monday with building high
pressure and limited cloudcover. Marine clouds return Tuesday
while weak troughing lowers temperatures and bring chances for
light coastal drizzle.



.KEY MESSAGES...

-Warmer and drier conditions peak Monday

-Gradual cooling and return of the marine layer are expected
starting Wednesday and continuing through the week.


&&

.DISCUSSION...Most of Northern California will remain cloud free and
sunny to start the work week. There are some large discrepancies in
how much coastal stratus reforms through Sunday morning, but
observations and HRRR guidance suggest more of a narrow band of
coastal stratus caught in a southerly eddy off the North Coast.

The combination of high pressure, clear skies, and lighter onshore
winds will allow for a nice warm and pleasant day for the region.
Some interior valleys should break into the low 90s. Increasing low
level moisture from a weak trough/front will increase the marine
stratus starting Tuesday. Other than more persistent low clouds,
bouts of light drizzle will also be likely late Tuesday through
Thursday. The advancement of troughs and zonal flow will trend
temperatures cooler. A stronger trough looks to take aim at N CA
through the weekend, bringing a chance for some light rain and
cooler temperatures. Ensemble members and probabilities for a
wetting rainfall (over 0.1 inch) do not look promising for much
rainfall at this time.


&&

.AVIATION...Winds remain much lighter with mostly VFR conditions
expected. Drier air at the lower levels and a well-mixed boundary
layer have prevented much coastal stratus formation. Models have
been too aggressive with reformation of the stratus, but at least a
narrow band may form along the north coast Monday morning. A
southerly return eddy would threaten to hold stratus around Humboldt
Bay and along portions of the coast through the afternoon. This
is currently a low probability scenario (30%) given model trends
and observations.



&&

.MARINE...Winds and seas will only slowly subside throughout the day
Monday. Hazardous seas have been observed in the inner waters, and
will continue in the outer waters into Monday afternoon. Winds and
seas will then remain low over the northern waters through mid next
week, while stronger northerlies remain in the southern waters,
mainly confined around Cape Mendocino. A small, long period
southerly swell will slowly build in through early next week.
Northerly winds will trend stronger late in the week.


&&

.EKA WATCHES/WARNINGS/ADVISORIES...
CA...
None.
NORTHWEST CALIFORNIA COASTAL WATERS...
     Hazardous Seas Warning until 3 AM PDT early this morning
     for PZZ450.

     Small Craft Advisory until 5 AM PDT early this morning for
     PZZ455.

     Gale Warning until 5 AM PDT early this morning for PZZ470.

     Hazardous Seas Warning from 5 AM early this morning to noon
     PDT today for PZZ470.

     Hazardous Seas Warning until 5 AM PDT early this morning
     for PZZ475.

&&

$$

NOTE: The full forecast discussion is now regularly issued between
10 am/pm and 1 pm/am. Additional updates will be issued as needed.

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