...WET AND UNSETTLED WEATHER TO CONTINUE THROUGH THE WEEKEND AS
MULTIPLE UPPER LOWS SWING ONSHORE...

.METEOROLOGICAL CONDITIONS (SHORT TERM: FRI PM - MON AM)...

The upper level trough and cutoff have begun to negatively tilt and
shift to the east. Showers and thunderstorms have continued to
develop across northern California, spreading from the northern San
Joaquin Valley/Central Coast to the Oregon state line. Things
continue to look on track for this upper low to open and shift
eastward through this evening and another stronger low to swing in
from the Gulf of Alaska through Sunday.

No major changes from this morning's QPF with minor adjustments made
with latest WPC, NBM, and some HRRR guidance. Largest increase was
made over the Sierra, north of the I-80 corridor (~0.5 inches
through the first 3-days).

Freezing levels have lowered under the current low to below 8k feet
along the North Coast while remaining above 11k feet across the
south. Levels will continue to lower through the weekend to below 6k
feet across the north on Monday morning and 8k feet across the
south.

.METEOROLOGICAL CONDITIONS (LONG TERM: MON AM - THU AM)...

Still anticipating the weekend upr low to be shifting inland on
Monday...crossing the northern Sierra on its way to the Great Basin.
Best precip totals will be ahead of the primary circulation over
portions of eastern NV with amounts over the favorable higher
terrain from 0.10- to 0.33-inch. Otherwise...look for some remnant
shower activity mainly over the southern Cascades and length of the
Sierra with amounts generally remaining at 0.10-inch or less.

After this system exits to the east toward the central
Rockies...brief ridging will slide across the region bringing
primarily dry conditions on Tuesday. This is all ahead of another
area of low pressure dropping southeast from the Gulf of Alaska
toward southern BC and the Pacific Northwest. The 10/12Z models are
showing a little better agreement in terms of the depth of this s/wv
trof moving inland and clipping the northern tier of the region.
After incorporating the latest WPC QPF and 10/13Z NBM...precip
amounts remained relatively consistent with the morning
forecast...which shows 0.25- to 0.50-inch over the Smith River basin
down to near the mouth of the Klamath River and then inland over the
crest of the southern OR Cascades. Lesser totals more in the range
of 0.10- to 0.25-inch are forecast over the Shasta Lake drainage
over to far northern NV close to the OR and ID border. Farther south
across northern CA...0.10-inch or less will fall across the Eel
River basin for coastal sections and the northern Sierra for inland
locations. Freezing levels will generally be from 5000- to 7000-feet
where precip is expected.