862
FXUS66 KEKA 220709
AFDEKA

AREA FORECAST DISCUSSION
National Weather Service Eureka CA
1209 AM PDT Sat Aug 22 2026

.KEY MESSAGES...

* Generally mild, seasonable weather is expected for the next
  week.

&&

.SYNOPSIS...Slightly below normal temperatures are expected today.
Some warming in the interior is expected Sunday and Monday before
another trough brings cooler temperatures next week. Dry, seasonable
weather is likely for the next week.


&&

.DISCUSSION...The upper low that brought a deep marine layer and
upper-level moisture (and the associated high clouds) moves out of
the area today and high pressure starts to build in behind it.
Marine influence is expected to keep temperatures in the interior
moderated with most areas in the 80s to low 90s. 60s and 70s are
likely closer to the coast. Stratus along the immediate coast is
likely to at least partially clear this afternoon with model
soundings showing a very weak marine inversion.

Weak offshore flow tonight into Sunday morning may slow the
reemergence of coastal stratus, though most models do show at least
some clouds reforming. Regardless, breezy coastal winds Sunday
afternoon are likely to scatter any remaining stratus bringing a
mostly clear, but breezy, Sunday afternoon at the coast. Interior
temperatures jump closer to normal with 90s likely for most interior
valleys.

Monday through the middle of the week, a trough starts to approach
the area bringing slightly cooler interior temperatures along with a
deeper marine layer. Light winds offshore may lead to coastal
stratus to be persistent into the afternoons. Moisture and
instability is limited with this troughing pattern, which will limit
thunderstorm potential. Generally mild, seasonable weather is likely
for much of the next week.


&&

.AVIATION...(6Z TAFs)...MVFR ceilings are being observed at the
coastal terminals as the marine layer remains deep. Ceilings may
fall briefly to IFR before sunrise. Ceilings are likely to lift in
the morning and into the afternoon. Scattering is possible, but NBM
does have ACV and CEC have a 45% and 60% chance for at least MVFR
ceilings, respectively. A weak marine inversion does lend some
support to at least partial scattering for a few hours in the
afternoon.


&&

.MARINE...Northerly winds return today, especially south of Cape
Mendocino. Locally stronger northerly winds, with near gale to gale
force gusts, are likely in the immediate lee of the Cape by this
evening. Winds continue to increase and spread across the waters
into Sunday with stronger winds with gusts of 20 to 30 kts likely by
Sunday morning. South of Cape Mendocino, winds peak Sunday
afternoon, while north of the Cape, winds peak Sunday evening and
overnight. Winds quickly diminish early Monday and winds remain
relatively light through midweek. Aside from steep wind waves from
these northerlies, seas this week will be dominated by small long
period southerly swells and mid period westerly swells.


&&

.EKA WATCHES/WARNINGS/ADVISORIES...
CA...
None.
NORTHWEST CALIFORNIA COASTAL WATERS...
     Small Craft Advisory from midnight tonight to 3 AM PDT
     Monday for PZZ455.

     Small Craft Advisory from 6 PM Sunday to 9 AM PDT Monday
     for PZZ470.

     Small Craft Advisory from midnight tonight to 9 AM PDT
     Monday 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