Brier Weather Station
Latitude N 47° 46' 49" Longitude W 122° 16' 48" Elevation 341 ft
041
FXUS66 KSEW 181027
AFDSEW
Area Forecast Discussion
National Weather Service Seattle WA
227 AM PST Sun Jan 18 2026
.SYNOPSIS...A strong and stable ridge will remain in place
through the middle of the week. A cool trough will keep snow
levels low moving toward the weekend.
&&
.SHORT TERM /TODAY THROUGH TUESDAY/...Strong high pressure
remains in place leading to ongoing dry and stable weather
conditions. There`s patchy shallow fog in the interior this
morning with temperatures in the upper 20s and 30s. Expect
highs around 50. We`ll see similar conditions through Tuesday.
33
&&
.LONG TERM /TUESDAY NIGHT THROUGH SATURDAY/...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%. Fraser River
outflow winds are possible too (affecting the NW Interior) on
Saturday. 33
&&
.AVIATION...Latest satellite imagery shows patchy fog forming from
PAE northwards, the southern interior, and near the Kitsap
Peninsula. Outside of fog, VFR with mostly clear skies early this
morning. Terminals with a NE breeze should remain fog free this
morning, but there is still a 20-30% chance of low clouds forming
resulting in IFR/LIFR cigs after 12Z. VFR conditions for the
majority of terminals after 21Z, with the exception of BLI, where
conditions may only improve to MVFR. Another chance for IFR/LIFR
possible Sunday night, with current probabilities at 20-40% after
06Z. Again, similar to the past days, winds will be a factor on
whether it will be fog or low clouds.
KSEA...VFR with clear skies early this morning. Patchy fog may form
near the river valleys, but NE winds 6-10 kt should hinder fog
development at the terminal. That said, there is a 20% chance of
IFR/LIFR cigs due to low clouds between 12Z-18Z. If low clouds do
form, they are expected to scatter out in the afternoon, giving way
to VFR with mostly clear skies. NE winds 5-7 kt will continue at the
terminal this afternoon. Another chance (20-30%) for IFR/LIFR cigs
after 09Z.
29
&&
.MARINE...High pressure and generally light offshore winds
through the middle of the 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