027
FXUS66 KEKA 081137
AFDEKA

AREA FORECAST DISCUSSION
National Weather Service Eureka CA
437 AM PDT Sat Jun 8 2024

.SYNOPSIS...Temperatures will remain seasonable through the weekend
with increasing marine influence near the coast. A moderate heat
wave will build early next week.


&&

.DISCUSSION...A deep trough is currently crossing the area, covering
the early morning sky with a band of midlevel clouds. Despite
weakening the marine inversion, modest surface lift combined with
enhanced marine influence have actually helped make a more widespread
if broken and elevated marine layer all along the coast this
morning. With weakened high pressure, highs will continue to cool
today with interior valleys most likely reaching the mid 80s, very
close to seasonal normals. Increase moisture and upper level support
will allow very slight chance (around 10%) of isolated thunder to
persist today over the Trinity Alps, though much weakened surface
heating will reduce chances compared to the last few days. Cooler
conditions will continue Sunday.

Ensembles consistently show a very tilted trough brining another
brief warming and drying period back to the area early next week.
The nature of the system will make warming weak and short lived,
however, with NBM only showing a 20 to 40% chance of any
temperatures over 100. Tuesday is most likely to be the hottest day
with widespread moderate HeatRisk, and locally major HeatRisk in
Lake County. Though not a particularly strong dry pattern, there
remains essentially no chance of any wetting rain through next week.
/JHW


&&

.AVIATION...Stratus has impacted the coastal terminals early this
morning, with conditions fluctuating between LIFR and MVFR.
Conditions are expected to improve after sunrise as solar radiation
lifts cloud cover. Northwesterly breezes will impact all terminals
in the afternoon, which will diminish after sunset. HREF currently
shows around a 40 percent probability of stratus impacting ACV once
again tonight, while showing little to no chance along the Del Norte
coast. Low level wind shear is expected to increase after sunset in
UKI, which will diminish by early Sunday morning. JB


&&

.MARINE...Northerly gusts have largely subsided in the waters north
of Cape Mendocino. They remain breezy south of Cape Mendocino, with
gusts up to 25 knots being reported at Point Arena. The sea state is
made up of northerly wind waves of around 5 to 7 feet at 6 to 7
seconds and a decaying NW swell of around 3 feet at 11 seconds.
These conditions will largely persist through the day. Early Sunday,
northerly winds increase with gale force gusts up to 40 knots likely
in the expansion fan south of Cape Mendocino, along with some
locally strong gusts in the northern waters. Seas will be chaotic as
northerly wind waves increase to 9 to 10 feet at 9 seconds and
combine with a mid-period westerly swell of around 7 feet at 14
seconds, for a combined significant wave height of up to 12 feet.
Although winds will remain breezy, conditions improve slightly early
week. Gales look possible again mid-week. JB


&&

.EKA WATCHES/WARNINGS/ADVISORIES...
CA...
None.
NORTHWEST CALIFORNIA COASTAL WATERS...
     Small Craft Advisory from 9 AM Sunday to 9 AM PDT Monday
     for PZZ450.

     Small Craft Advisory until 9 AM PDT Monday for PZZ455.

     Small Craft Advisory from 9 PM this evening to 9 AM PDT
     Monday for PZZ470.

     Small Craft Advisory until 3 PM PDT Sunday for PZZ475.

     Gale Warning from 3 PM Sunday to 9 AM PDT Monday for PZZ475.

&&

$$

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