236
FXUS66 KEKA 292130
AFDEKA

AREA FORECAST DISCUSSION
National Weather Service Eureka CA
230 PM PDT Fri May 29 2026

.SYNOPSIS...Clouds are expected to return tonight with coastal
drizzle possible Saturday morning. Saturday is expected to be
mainly dry with gradual clearing skies although temperatures
remain slightly below seasonal normals. A warming and drying
trended is expected to start Sunday and increase into next week.

&&

.KEY MESSAGES...

-Slightly cooler than normal conditions with marine influence
 remaining strong through Saturday.

-Breezy winds at the coast this weekend.

-Warmer and drier conditions build Sunday into early next week.

.DISCUSSION...The upper level low that was impacting the area has
moved off to the east and a brief period of high pressure is
building in. A few showers or even a thunderstorm over the
mountains are still possible this afternoon. There were quite a
few clouds this morning and much of the area is seeing them linger
into the afternoon. Tonight a weak shortwave shortwave moves by
to the north of the area bringing some additional clouds and
possibly some drizzle to the coastal areas. By Saturday afternoon
this is expected to be past the area and will likely keep any
showers or thunderstorms to the east of the area. As high pressure
builds into the area Saturday afternoon gusty north winds are
expected at the coast. Winds of 15 to 20 mph with gusts to 30 mph
are possible. Saturday night into Sunday morning the winds are the
coast and in the valleys will diminish, but a few thousand feet
above ground the northeast winds are expected to remain elevated
or increase to 15 to 20 mph with higher gusts. Sunday afternoon
breezy northwest winds are expected along the coast again. Inland
temperatures are expected to warm into the 80s and the marine
influence is expected to be fairly limited. Offshore flow is
expected again Sunday night, but may be weaker than Saturday night.
Inland highs are expected to continue to warm and the upper 80s
to low 90s are expected. The marine influence is expected to be
fairly shallow and remain limited to the more immediate coastal
areas.

Monday afternoon or overnight it appears that the upper level
ridge moves past the area. This looks like it will allow the
marine layer to return bringing fog and low clouds back to the
coast. This will keep the immediate coast and near coastal areas
cooler and more moist on Tuesday. Tuesday eastern Trinity and
eastern Lake counties will see one more day of warming with highs
around 90. Wednesday and Thursday the upper level trough slowly
pushes closer to the area. This will bring a more concerted marine
push as well as some cooler air aloft will lower temperatures
across the area. This trough could bring a few light showers over
the weekend, but confidence is low on this. Only two of the four
ensemble clusters bring some light rain on Saturday. MKK

&&

.AVIATION...Satellite imagery depicts low clouds already
clear out over KCEC, while low clouds persist around the HUmboldt
Bay and vicinity. This is promoting prevailing LIFR with low
ceilings and visibility in mist. Otherwise, conditions are still
expected to continue improving across the coastal terminals this
afternoon. Short-term guidances suggest low clouds redeveloping
around the Humboldt Bay and vicinity this evening and tonight. This
will bring back IFR to LIFR conditions at KACV later this evening.
Nearshore gentle southerly breezes may push northward toward KCEC
late tonight into Saturday, promoting IFR/LIFR conditions. Surface
winds from NW at 10-15 kts with higher gusts for the coastal
terminals, while WNW winds at around 10 kts, with occasional higher
gusts at KUKI.


For UKI, mainly VFR conditions with cumulus clouds in the vicinity
higher terrain. Winds from N at around 10 kts, with occasional
higher gusts, becoming very light and variable after 30/03Z. With
calm winds, low clouds and vicinity fog are expected to develop. NBM
probability show there is a 10-20 for low clouds lower than 3000
feet for UKI this evening and into Saturday, while a nonzero (<5%)
for low clouds lower than 1000 feet.

Saturday, breezy conditions with clear skies are expected for all
terminals. /ZVS

&&

.MARINE...Moderate to strong winds are already observed across the
waters this afternoon, with the strongest winds across the outer
waters. Winds will be steadily strengthening through this weekend,
with gale-force gusts developing over the outer waters. Gale Warning
is now in effect for zones 470 and 475 from Saturday/Saturday night
through Sunday night. Localize gale-force gust winds are likely
around Pt St George and downwind of Cape Mendocino as well. For the
inner waters, advisory conditions are likely with mostly moderate to
strong breezes expected for much (>50%) of the area. The existing
northwest swell will decay out of the waters late tonight, allowing
for short period seas to dominate the sea state. Steep to very
steep, hazardous short period seas will likely builds in response of
the increasing winds to around 9-15 feet this weekend. Winds will
weaken slightly but most likely remain moderate early next week.
/ZVS

&&

.EKA WATCHES/WARNINGS/ADVISORIES...
CA...
None.
NORTHWEST CALIFORNIA COASTAL WATERS...
     Small Craft Advisory from 3 AM Saturday to 8 AM PDT Sunday
     for PZZ450.

     Small Craft Advisory until 3 AM PDT Monday for PZZ455.

     Small Craft Advisory until 8 PM PDT Saturday for PZZ470.

     Gale Warning from 8 PM Saturday to 3 AM PDT Monday for
     PZZ470.

     Small Craft Advisory until 2 PM PDT Saturday for PZZ475.

     Gale Warning from 2 PM Saturday to 9 PM PDT Sunday 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