Alturas, California 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

048
FXUS66 KMFR 141641
AFDMFR

Area Forecast Discussion
National Weather Service Medford OR
841 AM PST Thu Nov 14 2024

.DISCUSSION...The forecast remains on track for the day. Light
showers continue west of the Cascades and into Modoc County this
morning. Slight to moderate (40-80%) precipitation chances
continue through today across the area. Snow levels remain at
4000-5000 feet, so snow showers will be possible over the
Cascades. Amounts are expected to be unimpactful, but extra
caution is encouraged for traveling at higher elevations. -TAD

&&

.AVIATION...14/12Z TAFS...Widespread showers continue today in
onshore flow with a trough axis just offshore. Expect a mix of
VFR/MVFR ceilings/visibilities, lowest in showers, but also areas of
higher terrain obscured. Instability could produce isolated
thunderstorms over the coastal waters and just inland. Shower
activity won`t impact the terminals continuously, but mostly on and
off through about midnight. There should be a decrease in coverage
overnight into Friday morning as the trough moves inland, though
some will continue focused near the Cascades, the Cascade Foothills,
the Siskiyous and over by the Warner Mtns.

We had some ground fog form briefly here at the Medford airport in
the last hour or so, but this was transient and didn`t last very
long. With some showers nearby this morning and BKN VFR ceilings,
think fog is less likely, but not a zero chance through mid-morning.
-Spilde

&&

.MARINE...Updated 830 AM PST Thursday, November 14, 2024...
Showers will continue today through tonight along with a chance
for thunderstorms. Moderate west to southwest winds this morning
will shift to the northwest this afternoon, then to the north
tonight into Friday. A high, very steep and hazardous northwest
swell will persist this morning, with seas remaining elevated and
hazardous to small craft through Friday night. Eventually, seas
lower below 10 feet by Saturday morning. The improvement will be
short lived, however, with another front expected late Saturday
through Sunday with gusty south winds and steep to very steep
seas. This will be followed by another large swell late Sunday
into Monday. -Spilde


&&

.PREV DISCUSSION... /Issued 402 AM PST Thu Nov 14 2024/

DISCUSSION...Showers and snow showers will mainly be light, but
numerous through this evening with a snow level mainly around 4000
to 4500 feet. Snow levels will rise slightly (to a peak of 4500
to 5000 feet) with the heating of the day this afternoon, then
lower to 4000 feet this evening. There is also a slight chance of
thunderstorms into southwest Oregon and western Siskiyou County
through this afternoon. With light additional accumulations
expected, the Winter Weather Advisory for the southern Oregon
Cascades will be allowed to expire at the top of the hour. But,
the additional snow showers through this evening will still be
most numerous for the southern Oregon Cascades and the back
country higher elevations of western Siskiyou County with new
accumulations of 1 to 4 inches, except around 6 inches on the high
peaks. A dusting to an inch of snow is expected for the east
side, mostly during this evening.

Shower activity will diminish but linger late tonight, after
midnight, through Friday into Friday night with generally a
dusting to an inch of snow possible above 3000 feet. A brief
break late Friday night into Saturday afternoon will be followed
by the next frontal system with west side focused precipitation
Saturday night through Sunday night. Lighter showers are likely to
linger on Monday. Snow levels will initially be quite high,
around 7000 feet, with a warm frontal passage Saturday night into
Sunday afternoon. Snow levels drop accompanying the cold front
during Sunday afternoon through Sunday night to around 3000 to
4000 feet. Around 3 to 10 inches of snow are forecast for the
southern Oregon Cascades, and a few inches for northern Klamath
County, with generally up to an inch for the east side.

Tuesday is likely to begin a few days of dry and seasonable
conditions, at least into Friday.

&&

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

PACIFIC COASTAL WATERS...Small Craft Advisory until 4 PM PST Friday
     for Pzz350-356-370-376.

&&

$$