811
FXUS66 KEKA 012214
AFDEKA

AREA FORECAST DISCUSSION
National Weather Service Eureka CA
314 PM PDT Mon Jun 1 2026

.SYNOPSIS...Above-seasonable temperatures are expected to
continue with widespread Minor HeatRisk for the interior through
Tuesday. Temperatures will cool gradually starting on Wednesday
and into the weekend. A weak cold front will promote a deepening
marine layer and coastal drizzle. Enhanced west to northwest winds
through the channeled terrain and higher terrain on Wednesday, shifting
to the coast Thursday afternoon.

&&
.KEY MESSAGES...

- Above-normal temperatures through Tuesday, with interior Minor
  HeatRisk.

- Gradual cooling trend and return of marine layer are expected
  starting on Wednesday and continuing into the weekend.

- Enhanced west-northwest winds through the channeled terrain and
  higher ridges on Wednesday, followed by breezy north-northwest
  winds along the coast and exposed ridges on Thursday.


&&

.DISCUSSION...High pressure continue to dominate the Pacific
Northwest and Northern California, leading to dry weather and
above-normal temperatures. Afternoon interior temperatures peak
today with highs in the mid 80s to mid 90s, supported by abundant
sunshine and light to gentle breezes. Widespread interior Minor
HeatRisk, primarily affecting those who are extremely sensitive to
heat and without cooling or hydration. Meanwhile, mild weather
throughout the day along the coast with highs mainly in the upper
50s to mid 60s.

Tonight into Tuesday, a shallow marine layer is expected to develop
along the coast with a light southerly winds nearshore charging
up the low clouds and fog near the coastal areas. The high
pressure begin to weaken and shift eastward on Tuesday, while a
shortwave trough approaches the area. Coastal stratus are
expected to lift and scattered out throughout the day on Tuesday,
allowing to another sunshine day. Another day of warm to hot
temperatures is forecast across the interior on Tuesday, with
Minor HeatRisk. Onshore flow will push back inland the stratus
early Tuesday evening. The marine layer is expected to slightly
deepen Tuesday night into Wednesday. Patchy drizzle is expected to
occur with a saturated layer along the North Coast late Tuesday
night through Wednesday morning.

A gradual cooling trend will start on Wednesday as a cold front
moves through. An enhanced west-nortwest winds is expected along
the channeled terrain and exposed ridges in the wake of the front.
Gusts from 25 to 35 mph are most likely, with locally up to
around 40 mph possible. The combination of dry weather, warm
temperatures and gusty winds will bring an elevated fire weather
threat for eastern Lake County (see Fire Weather section). Other
than more persistent coastal low clouds, bouts of patchy drizzle
will also be likely Wednesday night through Thursday.

Thursday, a surface high pressure will builds in. This will aid in
rebounding daytime temperatures across the area on Thursday. In
addition, breezy north- northwest gusts of 25 to 35 mph over the
coastal and exposed ridges.

The NEPAC upper-level trough and zonal flow will trend temperatures
cooler Friday and into the weekend. Ensemble cluster analysis
suggest the strong upper-level trough digging southward on
Saturday. The WPC 500 mb cluster analysis suggest just a 25-30%
chance of light rain over Del Norte and farther northern Humboldt
counties on Saturday, with a 20% chance on Sunday. Elsewhere will
remain with prevailing dry weather. /ZVS


&&

.AVIATION...Clear skies are in place across the area this afternoon
with some northwest winds along the coast. Tonight with the weaker
wind flow and local southerly flow at the coast, expect there will
be a return of low clouds and fog by Tuesday morning.  There is
still a lot of uncertainty on the timing and height of the ceilings.
The HREF shows a few hours of clearing in the afternoon, but
confidence is low on that at the immediate coast. Tuesday evening
any coastal areas that do clear will likely see a quick return of
clouds before sunset. Inland areas are generally expected to remain
clear Tuesday night, but stratus will likely make its way up the
river valleys near the coast. At this point it looks like UKI will
remain clear Tuesday night. MKK


&&

.MARINE...The northerly winds are expected to gradually diminish
tonight, mainly near the coast. Farther offshore 15 to 20 kt winds
are expected to persist. The waves remain around 7 to 10 feet and
are also expected to diminish slightly. This is mainly wind driven
waves with a small portion of swell as well. These winds and waves
are expected to persist tonight.

Tuesday and Wednesday a weak shortwave approaches and moves through
the area. This will diminish the winds through the day Tuesday, in
the northern waters. These are expected to remain lower Tuesday
night and early Wednesday. Wednesday afternoon high pressure builds
back into the area and northerly winds quickly increase once again
Wednesday night. Thursday and Friday near gale to gale force gusts
are expected across the waters once again. This will need to be
monitored as it gets closer. Generally the waves are expected to be
steep and wind driven with no notable swells. MKK

&&

.FIRE WEATHER...Dry weather with above normal temperatures through
Tuesday. A weak cold front will promote an enhanced west-northwest
breezes across the channeled terrain and exposed ridges Wednesday
afternoon and evening. Good to moderate RH recoveries are
expected to prevail for most of the area. Farther south in Lake
County, moderate low RH recoveries combine with locally gusty
winds over the ridges is expected to bring locally elevated
conditions in the fire weather zones 419 and 421 on Wednesday. As
result, have to include a headline in the Fire Weather Forecast.
Otherwise, dry weather will prevail. /ZVS


&&

.EKA WATCHES/WARNINGS/ADVISORIES...
CA...
None.
NORTHWEST CALIFORNIA COASTAL WATERS...
     Small Craft Advisory until 9 PM PDT this evening for PZZ450.

     Small Craft Advisory until 9 AM PDT Tuesday for PZZ470.

     Small Craft Advisory until 3 AM PDT Tuesday 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