987
FXUS66 KEKA 131327
AFDEKA

AREA FORECAST DISCUSSION
National Weather Service Eureka CA
421 AM PDT Mon May 13 2024

.SYNOPSIS...After the passage of a trough, temperatures will begin
trending higher today and then through late in the week as a
strong ridge of high pressure builds back in. Temperatures along
the coast will continue to be suppressed by persistent stratus
through today. Strengthening northerly winds will create breezy
conditions this week.


&&

.DISCUSSION...As the trough moves out of the region, high pressure
will build back in the Northeast Pacific affecting Northwest
California. Today, offshore flow will begin to develop. It is
uncertain how quickly this will clear out the coastal clouds this
morning, but the coast will see clearing today. Also, northerly
winds will begin increasing this afternoon. The exposed coastal
spots will see some gusts from 20 to 30 mph in the afternoons this
week, with stronger gusts in coastal Del Norte.

As the ridge strengthens Tuesday, a weak upper low will move into
Southern California. Similarly as was seen over the last several
days, the combination of features will create above normal
temperatures, including warm advection to the coast from the
offshore winds. Inland temperatures in the valleys do look to be
warmer than what was recently observed, with widespread low to mid
90s. A few areas in the warmer valleys are expected to see a
moderate heat risk. Coastal temperatures into the mid to upper 60s
will be likely for the middle of the week. Breezy north winds will
continue through the week, along with the potential for offshore
flow helping to keep the coast clearer through the week.


&&

.AVIATION...Low coastal stratus continues this morning, with ongoing
LIFR to IFR conditions for coastal terminals. Stratus should recede
toward the coast this morning, but may be stubborn for much of the
immediate coast today. Offshore winds are forecast to develop above
Del Norte, along with strong coastal northerlies, which may disrupt
the marine layer and stratus layer at KCEC this afternoon. There is
potential for clouds advect from the south into KCEC once again late
tonight, however current guidance is split on this potential.
Stratus is expected to be more stubborn for areas further to the
south, with only brief scattering possible at KACV...if it occurs at
all. Low stratus is forecast once again along the Humboldt coast as
a small reversal develops overnight. KUKI should remain VFR through
the TAF period.


&&

.MARINE...Northerlies continue for the foreseeable future, and are
forecast to strengthen to Gale Force in the outer waters by this
afternoon. The surface high offshore is forecast to drift northward
on Tuesday, strengthening the pressure gradient off of Cape Blanco
and weakening it near Cape Mendocino. This is expected to enhance
northerlies downwind of Blanco in the Northern outers, particularly
the NW corner of the zone. Meanwhile, winds potentially drop below
Gale Force in the southern outers by Tuesday morning, with a
southerly reversal possible in the southern inners. This MSLP
pattern is forecast to persist through much of the upcoming week,
with Gale to near-Gale persisting in the northern outers into next
weekend. A few small NW and S swells move through the waters over
the next week, however seas remain primarily locally generated,
dominated by short-period northerlies from the wind core in the
northern outers. Short period seas look to hit their maximum shortly
after the winds peak Tuesday afternoon...with hazardous seas
possibly propagating into the Northern Inners Tuesday night and
Wednesday morning.


&&

.EKA WATCHES/WARNINGS/ADVISORIES...
CA...
None.
NORTHWEST CALIFORNIA COASTAL WATERS...
     Small Craft Advisory from 3 PM this afternoon to 3 PM PDT
     Tuesday for PZZ450.

     Hazardous Seas Watch from Tuesday afternoon through
     Wednesday morning for PZZ450.

     Small Craft Advisory from 3 PM this afternoon to 9 AM PDT
     Tuesday for PZZ455.

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

     Gale Warning from 3 PM this afternoon to 11 PM PDT
     Wednesday for PZZ470.

     Gale Warning from 3 PM this afternoon to 9 AM PDT Tuesday
     for PZZ475.

&&

$$

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