Crannell, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

109
FXUS66 KEKA 180702
AFDEKA

AREA FORECAST DISCUSSION
National Weather Service Eureka CA
1202 AM PDT Mon Aug 18 2025

.SYNOPSIS...Warmer trends and the possiblility of heat risk by
the end of the week are to be expected as ridging sets in and high
pressure becomes the prevailing trend. A gradual drying and
warming trend will develop this week, with further warming late in
the week along with low RH.


&&

.DISCUSSION...Conditions that brought light precipitation over
the weekend will transition as a ridging pattern up stream, sets
in by mid to late week. Stratus is becoming less resilient as the
evenings are showing improvements which will continue as high
pressure and subsidence build. Chances for fog are lower tonight,
with less coverage expected.

Moisture and instability mostly depart to start the work week
Monday. This will also mark the start of a gradual warming trend. A
shortwave perturbation will clip the northern region Wednesday, but
is expected to have little impacts other suppressing the greater
inevitable warmup. Beyond the passing of the shortwave, temperatures
will indeed further warm late in the week. Probability for isolated
warmer valleys to exceed 100 increases Thursday. Chances for
temperatures over 100 are highest Friday (75%) for the interior
valleys. Chances begin slowly dropping thereafter with a weak
signal from clusters of some troughing influence, but the heat may
linger longer through the weekend.

There are hints of some monsoonal moisture getting pulled in from
the SE by the weekend. This would increase chances for
thunderstorms, but the quality of moisture and instability look
poor at this time. /JJW /EYS


&&

.AVIATION...(06Z TAFs)...IFR/LIFR conditions continue to redevelop
along the coast through early Monday morning with low clouds and
visibility in FG/mist. Winds have become very light along the coast
with periods of a southerly reversal wind along the Del Norte Coast.
General cloudiness is expected for the interior of Humboldt,
Trinity, and Del Norte counties, with mostly VFR conditions still.
VFR conditions are forecast for interior Mendocino and Lake counties
with the potential for some marine stratus creeping up the Russian
River Valley into KUKI early Monday morning.


&&

.MARINE...Light to moderate breezes are forecast to continue into
Monday. A NW swell around 4 to 6 feet at around 10 seconds will
persist, before slowly subsiding through mid next week.

Relatively calm conditions with light to gentle breezes and low seas
are expected on Monday. Northerly winds begin to slowly increase on
Tuesday as a surface high pressure builds in, especially south of
Cape Mendocino. Increasing winds will spread northward and continue
strengthening by mid to late week as a thermal trough develops near
the coast. This will result in moderate to strong breezes and steep
seas, especially across the outer waters. /ZVS

&&


.FIRE WEATHER...Low RH values and the return of high temperatures
by the middle of the week and into the weekend. A gradual warming
and drying trend will start Monday, with the driest conditions
likely reached by the weekend.


&&

.EKA WATCHES/WARNINGS/ADVISORIES...
CA...
None.
NORTHWEST CALIFORNIA COASTAL WATERS...
None.
&&

$$

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