Humboldt Hill, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

392
FXUS66 KEKA 271935
AFDEKA

AREA FORECAST DISCUSSION
National Weather Service Eureka CA
1235 PM PDT Sun Jul 27 2025

.SYNOPSIS...Thunderstorm chances remain for Sunday afternoon.
Near normal to slightly below normal temperatures expected into
early this coming week. Another upper low could bring chances for
thunderstorms mid week.



&&

.DISCUSSION...Some mid-level moisture remains in the area making
isolated thunderstorms possible for Sunday afternoon to evening in
the Trinity Horn region. Chances of thunderstorms are less than
25%. Chances drop off for early this week.

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. Coastal stratus is expected to form each
night during this time with the potential for some clearing into
the afternoons. Thunder potential generally looks to remain low.
Ensembles are hinting at another upper-low forming right off the
coast, which may return thunderstorm chances by mid this coming
week. This thunderstorm potential will be monitored as the threat
approaches.

&&

.AVIATION...(18Z TAFs) VFR will prevail during the daylight hours
along the North Coast. IFR to return (50-60% probability) this
evening with ceilings around 500-800ft. Mendocino Coast expected to
have persistent fog due to coastal trapped eddies. Winds to remain
light and from the W/NW.

Inland, deep cumulus convection is forecast for Trinity County
during the afternoon and evening. Moderate turbulence and low level
shear, gusty outflow winds and heavy precip rates will also be
possible in and around thunderstorms. VFR conditions will be present
away from storms.

&&

.MARINE...A weak pressure gradient between an offshore ridge and
an inland trough will continue to maintain a gentle to moderate wind
regime through Sunday. Stronger winds with gusts to 25-30kt are
likely in the lee of Cape Mendocino. Seas are forecast to remain low
and dominated by 2 to 5 foot wind waves and a 1 to 2 foot long
period southerly swell. Highest wind waves will remain over the
outer waters and in the lee of Cape Mendocino. Northerlies are
forecast to increase next week, strongest over the outer waters and
downwind of Cape Mendocino.

&&

.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