Area Forecast Discussion Issued by NWS Spokane, WA
000
FXUS66 KOTX 010551
AFDOTX
Area Forecast Discussion
National Weather Service Spokane WA
951 PM PST Sun Feb 28 2021
.SYNOPSIS...
Another weak disturbance Monday into Tuesday could bring very light
snow mostly over the mountains. A warming trend is then expected
from mid to late week with dry conditions Wednesday through
Friday. Next weekend temperatures will cool back to seasonal
normals by the end of the weekend along with a chance of mainly
mountain showers.
&&
.DISCUSSION...
Through Monday night: Tonight, very light snow will continue for
the Panhandle and is expected to shift towards primarily the
northern Panhandle and northeast Washington mountains by tomorrow
morning. Moisture advection from the Southeast brings the chance
of fog and low stratus development tonight and tomorrow morning,
primarily for the northern valleys and Cascade valleys. This may
spill into places such as Wenatchee, the Waterville Plateau, and
the Spokane- CDA corridor. Monday highs are expected to be near
normal with temperatures generally in the mid 40s to lower 50s.
Chances of very light snow increase for the mountains late Monday
into early Tuesday as a weak wave begins to move into the area. RC
Tuesday through Sunday: Models are in good agreement of a weak
wave moving through the region on Tuesday for a chance of light
snow along the Cascade crest and Idaho Panhandle mountains with
conditions remaining dry elsewhere. After this wave passes an
upper trough digs off the coast placing the region in a milder
southwest flow aloft Wednesday through Friday. This will translate
to a warming trend with highs by Friday widespread in the 50s with
some of the warmest spots such as Moses Lake and Lewiston topping
out in the low 60s. For next weekend the offshore trough ejects
inland but there remains timing issues of when resulting in lower
confidence with the Saturday temperatures. Temperatures though
should still trend down especially by Sunday. There is also some
indication that the front could stretch and weaken prior to moving
east of the Cascades and thus should be mainly a light precipitation
producer. JW
&&
.AVIATION...
06Z TAFS: The overall trend has been for clouds to thin out this
evening. Winds have also diminished as we move into a period of
relatively quiet weather. Over the next 36 hours, the challenge
will be whether any MVFR CIGs develop. Some guidance is indicating
a surge of low level moisture moving across southeast WA that may
result in lower CIGs over the Palouse and especially at KPUW
during the morning hours. Outside of some localized lower
ceilings, the trend of improving conditions will continue
resulting in VFR throughout the Inland Northwest until Tuesday.
/AB
&&
.PRELIMINARY POINT TEMPS/POPS...
Spokane 31 47 32 45 29 50 / 0 0 0 0 0 0
Coeur d`Alene 29 45 32 43 28 48 / 10 0 0 0 0 0
Pullman 28 44 30 44 29 48 / 0 0 0 0 0 0
Lewiston 30 51 35 51 33 53 / 0 0 0 10 0 0
Colville 31 46 30 45 27 46 / 10 10 10 0 0 0
Sandpoint 32 43 33 41 29 45 / 20 10 10 10 0 0
Kellogg 29 43 33 41 30 47 / 10 0 20 10 0 0
Moses Lake 33 53 32 53 29 53 / 0 0 0 0 0 0
Wenatchee 33 52 32 50 29 50 / 0 0 0 0 0 0
Omak 34 47 32 48 28 49 / 10 10 10 0 0 0
&&
.OTX WATCHES/WARNINGS/ADVISORIES...
ID...None.
WA...None.
&&
$$