Witter Springs, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

599
FXUS66 KEKA 290752
AFDEKA

AREA FORECAST DISCUSSION
National Weather Service Eureka CA
1252 AM PDT Tue Jul 29 2025

.SYNOPSIS...Slight thunderstorm chances continue each afternoon
for interior areas around the Klamath Mountains. Near normal to
slightly below normal temperatures expected into early this week.
Another upper low could bring increased chances for thunderstorms
by mid week.


&&

.DISCUSSION...Some mid-level moisture remains in the area making
isolated thunderstorms possible Tuesday afternoon in mostly the
Trinity Horn region. Chances of thunderstorms are less than 15%
on Tuesday.

High pressure is expected to generally remain east of the area.
This will keep temperatures near seasonal normals with highs in
the upper 80s to low 90s in interior areas. Coastal stratus is
expected to form each night during this time with the potential
for some clearing into the afternoons with highs in the low to mid
60s along the coast.

Models indicate that an upper level low in the Gulf of Alaska
will exert influence over Northwest California by Wednesday,
increasing chances for isolated to scattered dry thunderstorms for
Trinity, NE Humboldt, and interior Del Norte counties. Chances
for dry thunderstorms are most likely on Wednesday, but could also
occur Thursday and Friday.


&&

.AVIATION...6Z TAFs...Broad troughing with embedded shortwave
disturbances are maintaining a deep marine layer. This will continue
to greatly reduce the chances for lower ceilings and fog (visibility
of 1/2 SM or less). MVFR to IFR ceilings are forecast under this
setup. The stratus is once again slow to recover from the full
clearing on Monday, but progress will continue. After being fully
disrupted over the past 24 hours, the low level inversion is showing
some signs of restrengthening. Southerly wind reversal eddies will
develop Tuesday and will further add to more diurnally persistent
stratus. Soundings show further deepening likely under this
continued pattern and this will keep the stratus more persistent.
Some isolated thunderstorms may form in Trinity County Tuesday
afternoon. Higher thunderstorm coverage is likely Wednesday. JJW

&&

.MARINE...The northerly winds will continue slowly increasing
through the waters. This is mostly seen now in the southern zones
where 20-25 kt winds are forecast. Some highly localized gale
strength gusts will develop around Cape Mendocino over the
afternoons and evenings. Northerlies up to 20 kts will spread into
the north outer zone 470 Tuesday night through Wednesday. Short
period seas are forecast to reach 5-7 feet Wednesday through
Thursday. A Small Craft Advisory is now included in this zone. The
northerlies will remain stronger in the southern waters over the
extended forecast through this week.


&&

.FIRE WEATHER...Isolated to scattered dry thunderstorms are
possible from the middle to end of this week for mostly northern
Trinity County. Around the Trinity Horn, chances for thunderstorms
are 20 to 30% with areas of extreme NE Humboldt, interior Del
Norte, and northern Trinity County having a 10 to 20% chance.
Lightning strikes could have the potential for fire starts.


&&

.EKA WATCHES/WARNINGS/ADVISORIES...
CA...
     Fire Weather Watch from Wednesday morning through Wednesday
     evening for CAZ204-283.

NORTHWEST CALIFORNIA COASTAL WATERS...
     Small Craft Advisory from 3 AM to 3 PM PDT Wednesday for
     PZZ470.

     Small Craft Advisory until 3 PM PDT Wednesday 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