FXUS66 KMFR 020538
AFDMFR

Area Forecast Discussion
National Weather Service Medford OR
1038 PM PDT Tue Apr 1 2025

..Updated AVIATION discussion for 06Z TAFs...

.AVIATION...02/06Z TAFs...Scattered showers continue across northern
California and southern Oregon tonight, with most of the activity
east of the Cascades. Thunderstorms are no longer a concern, and
generally VFR levels are bring observed across the area. There's
chances of periodic MVFR ceilings through the night. A chance of fog
at the Klamath Falls terminal is also in the forecast, although this
is expected to be brief if fog does develop.

Slight to moderate (30-50%) chances of scattered showers west of and
along the Cascades continue through the TAF period. However, amounts
are light and flight levels should not be dramatically impacted. -TAD

&&

.MARINE...Updated 800 PM Tuesday, April 1, 2025...Gusty north to
northwest winds and steep seas continue tonight. Winds and seas will
diminish overnight into Wednesday. Then, north winds increase on
Thursday with steep seas possible. Conditions will improve again
Friday through Saturday. The outlook continues to indicate the
arrival of a building long period west swell on Sunday, with seas
possibly becoming high and steep into Monday.

&&

.PREV DISCUSSION... /Issued 435 PM PDT Tue Apr 1 2025/

DISCUSSION...An upper level trough is bringing widespread showers
across the region this afternoon. So far, no lightning has been
observed in the area, but a slight chance remains into the early
evening hours, mainly south and east of the Cascades/Siskiyous.
Snow levels are hovering around 3500-4000 ft, and snow showers
continue for areas east of the Cascades and across northern
California. With the daytime heating, snow accumulations on
roadways are quickly melting with any breaks in the clouds, so
roadway impacts will continue to diminishing as the afternoon
wears on. Winter Weather headlines remain in effect through this
afternoon, and details can be found at NPWMFR.

The backside of this trough will linger over the PacNW tonight into
Wednesday as the trough digs over the Great Basin. This will
maintain shower activity along and west of the Cascades, with
highest chances of showers expected north of the Rogue-Umpqua Divide
through early Thursday morning. Seasonably cool temperatures and
continued cloud cover will continue on Wednesday.

Thursday will be a transition day under northerly flow and a drying
air mass. Showers will come to an end with another day of seasonably
cool afternoon temperatures and decreasing cloud cover. Expect a
couple of breezy days while we remain under northerly flow
Wednesday and Thursday.

The backside of the trough finally pushes eastward Thursday night
and an upper level ridge nudges into the region on Friday. This will
bring a warming trend and dry period to the area for much of the
weekend. Mid-upper 70s are in the forecast for West Side Valleys
with mid to upper 60s for East Side locations. There will likely be
areas of fog in some valleys during the mornings, but it's getting
pretty late in the year for fog to linger too long into the day. So
even if it starts out cloudy in the mornings, expect warm and sunny
afternoons this weekend.

Late Sunday into Monday, a front will approach the region and break
up the ridge pattern. This front doesn't look overly strong and snow
levels are currently only forecast to come down to around 5000 ft.
This should be a fairly typical spring time front, bringing a dose
of rain/mountain snow and some cooler temperatures. The warm and dry
pattern is likely to rebound after this front and continue through
much of next week. /BR-y


&&

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

PACIFIC COASTAL WATERS...Small Craft Advisory until 11 PM PDT this
     evening for PZZ350-356-370-376.

&&

$$