Brier Weather Station
Latitude N 47° 46' 49" Longitude W 122° 16' 48" Elevation 341 ft
990
FXUS66 KSEW 171704
AFDSEW
Area Forecast Discussion
National Weather Service Seattle WA
904 AM PST Sat Jan 17 2026
.UPDATE...
Clear skies over a majority of the area this morning. Some
patchy fog hanging on over the Southwest Interior and north of
the San Juans will dissipate by noon. Nothing new in the first
look at the 12z model run with the high amplitude upper level
ridge offshore and dry northerly flow aloft over the area the
next few days. No updates this morning. Felton
&&
.SYNOPSIS...
A strong and stable ridge will remain in place
through the middle of next week.
&&
.SHORT TERM /TODAY THROUGH MONDAY/...
Strong high pressure remains in place leading to ongoing dry
and stable weather conditions. Less clouds this morning with
cooler temps in the 30s. Expect highs around 50. We`ll see
similar conditions through Monday. 33
&&
.LONG TERM /MONDAY NIGHT THROUGH FRIDAY/...
High pressure keeps western WA dry through at least Wednesday
(and possibly Thursday). Rain/snow chances increase toward
Friday and the weekend as weak disturbances pass through in NW
flow. The air mass will be cooler with lower snow levels.
Probabilities of lowland snow (1" or greater) are less than 10%.
33
&&
.AVIATION...
Clear skies early this morning at the majority of the terminals.
Only a few patches of fog across the terminals this morning
(primarily affecting KOLM to KCLS and portions of the north interior
around KAWO) - expect a mix-out later this morning into the early
afternoon. The VFR conditions will persist through the day with
light N/NE winds 5-10 kt. There is a 20% chance of IFR/LIFR
conditions possible Saturday night, especially with lighter winds
and another inversion with light flow aloft playing part to the
risk.
KSEA...Patchy vicinity fog remains a no-factor for visibilities at
the terminal, and will burn off quick this morning with clear skies
rest of the day. N/NE winds 5-10 kt. Another low chance of IFR/LIFR
(20%) exists for Sunday morning with winds/gradients becoming
lighter tonight. Probabilities are higher however to the north and
south of the terminal as of update.
29/HPR
&&
.MARINE...
High pressure and generally light offshore winds through the
weekend and early next week. 33
&&
.HYDROLOGY...
No river flooding is expected over the next 7 days.
&&
.SEW WATCHES/WARNINGS/ADVISORIES...
WA...None.
PZ...None.
&&
$$
NWS SEW Office Area Forecast Discussion