Alturas, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

717
FXUS66 KMFR 260535
AFDMFR

Area Forecast Discussion
National Weather Service Medford OR
1035 PM PDT Wed Mar 25 2026

.UPDATE...Aviation and Marine discussions updated.


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.DISCUSSION...Plenty of clouds and a few light showers are moving
across the area this afternoon behind last night`s departing cold
front, and ahead of today`s front/upper trough. Radar imagery
shows a distinct, narrow line of precipitation approaching the
coast, and this is likely the front itself. As it moves onshore
and across the area, expect a brief period of moderate
precipitation and a burst of gusty winds. How far inland this
line will get before it dissipates is uncertain, as it may fall
apart in the coastal mountains, but it should die off well before
it reaches the Cascades. A few showers are possible behind this
line, but amounts should be on the lighter side.

Once the front is past, the area will dry out as high pressure
builds back in overhead. Some residual low level moisture, much
of it due to the slightly higher rainfall amounts of the last 24
hours, lingers tonight into Thursday morning while a thermal
trough develops along the coast. These drier conditions are
expected Thursday through the weekend with a wide range each day
from chilly mornings to very warm afternoons.

Well-below-freezing low temperatures in the teens and 20s are
expected east of the Cascades Thursday through Saturday, while a
widespread frost and areas of freezing temperatures will also be
present on the West Side on tonight and again Thursday night.
However, this lingering moisture may keep some extra clouds in
the area, therefore keeping temperatures a bit warmer, especially
in the Rogue Valley, where clouds are expected to bank up against
the northern slopes of the Siskiyous for much of tonight. While
cold temperatures like this are very common for March, it does
follow our lengthy period of above normal temperatures and recent
record warmth that ushered in early spring growth. Thus, sensitive
vegetation may be damaged by the cold temperatures. Afternoon
highs from Thursday through Sunday will return to well above
normal. This includes easterly flow induced warming for Brookings
on Thursday and Friday with a high near 70 on both days.

An approaching front may get close enough to bring rain to the
coast as early as Sunday, with the highest/low end chance
probability north of Cape Blanco, but the vats majority of ensemble
members keep precipitation out of the area until Sunday night or
Monday morning. This will be the beginning of an active pattern
of wet and windy weather for at least Monday into Wednesday as a
couple of frontal systems move into the West Coast. These look to
be seasonable systems with south to southwest flow likely to
favor precipitation for Curry and Siskiyou counties.


&&

.AVIATION...26/06Z TAFs...Conditions are expected to be mainly VFR
through the TAF cycle. Partial mountain obscurations are expected
along and west of the Southern Oregon Cascades and near the Siskiyou
Mountains overnight. There is a 10% chance for IFR to develop in the
Umpqua Valley, including Roseburg early Thursday morning. Otherwise,
expect VFR. Offshore easterly winds overnight into Thursday morning
are expected to bring drier area and lower chances for low
clouds/fog in valleys. Gusty north winds are likely along the coast
Thursday.

&&

.MARINE...Updated 1100 PM PDT Wednesday, March 25, 2026...Steep
swell-built seas continue south of Cape Blanco, while seas to the
north are below Advisory levels. A thermal trough starts to build
later this morning, which will bring gusty northerly winds across
all area waters. Gale gusts will be possible over waters south of
Cape Blanco by this afternoon, with steep wind-built seas returning
to waters north of Cape Blanco. This pattern will continue into
early Friday morning.

Gusty northerly winds continue through the day Friday, but drop below
gale speeds. With the thermal trough looking to shift west through
its lifetime, very steep and hazardous seas may continue for waters
beyond 10 nm from shore on Friday with steep seas expected for inner
waters. Seas ease through the day Saturday, with a period of below
advisory seas possible to end the weekend. Active weather could
bring marine showers and unsettled seas early next week. -TAD

&&

.MFR WATCHES/WARNINGS/ADVISORIES...
OR...CA...None.

PACIFIC COASTAL WATERS...Small Craft Advisory until 11 AM PDT
     Thursday for PZZ356-376.

Small Craft Advisory from 2 AM to 11 AM PDT Friday for PZZ350-
     356-370.

     Gale Warning from 11 AM Thursday to 2 AM PDT Friday for PZZ356-
     376.

     Hazardous Seas Warning from 2 AM to 11 AM PDT Friday for PZZ376.

&&

$$