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000
FXUS66 KOTX 190948
AFDOTX

Area Forecast Discussion
National Weather Service Spokane WA
248 AM PDT Mon Apr 19 2021

.SYNOPSIS...
Much cooler temperatures will settle in across the Inland
Northwest to start the week. Dry and warming temperatures return
through at least Wednesday. Then additional precipitation chances
arrive Thursday into next weekend.

&&

.DISCUSSION...
Monday and Tuesday: Satellite imagery shows our cold front racing
to the southwest very nicely as the leading edge of gusty winds
has made it into northern Oregon early this morning and speeds
have begun to taper off. Some of the peak winds observed were 45 -
55 mph with a select location or two reaching into the 60 mph
range in far south-central Washington.

Today will feature cooler temperatures than we saw the past few
days, thanks to the sharp cold advection with the cold front.
Temperatures will top out just below seasonal normal (upper 50s)
and about 15-20F cooler than we saw on Saturday and Sunday. A
drying trend in place under dry, cool, northwest flow will keep
temperatures cool to start the week before a gradual warming trend
takes place through midweek. In between our departing trough and a
longwave trough in the Gulf of Alaska, we will keep northerly flow
in place for several days and mostly clear skies as well. A brief
break in the weather will keep us in more of a Spring-like weather
pattern and not so much Summer-like (temperature-wise). /Dewey


Wednesday through Sunday: Initially longwave axis remains off the
coast allowing a northerly flow void of significant shortwaves to
influence sensible weather over Eastern Washington and North Idaho.
The ridge influence is weakened after Wednesday and may allow a
weather disturbance to drop down from the north Thursday/Friday with
enough intensity to merit a chance of thunderstorms. This
disturbance might also result in gusty north/northeast winds. A
followup disturbance is expected to approach with a warmer
trajectory from the west Saturday/Sunday. Therefore the forecast is
marked not only with a cooling trend after temps peak on Wednesday
but also an increase in cloud cover and pops peaking over the
weekend with a persistent rain shadow of varying size over the
Columbia Basin and nearby lowlands. /Pelatti

&&

.AVIATION...
12Z TAFS: The strong northeast winds have begun to taper off early
this morning and will continue the trend through mid-day Monday.
Northeast winds 10 to 15 mph with gusts 25 to 30 mph will be
possible through 14z - 17z. Clearing skies will be present along
with light northeast breezes through Monday night under VFR
conditions. /Dewey

&&

.PRELIMINARY POINT TEMPS/POPS...
Spokane        58  34  63  35  69  43 /   0   0   0   0   0   0
Coeur d`Alene  56  31  62  33  66  41 /   0   0   0   0   0   0
Pullman        56  33  62  33  65  40 /   0   0   0   0   0   0
Lewiston       64  37  67  38  71  44 /   0   0   0   0   0   0
Colville       61  31  67  34  72  40 /   0   0   0   0   0   0
Sandpoint      55  32  60  32  65  40 /   0   0   0   0   0  10
Kellogg        51  33  57  34  63  42 /   0   0   0   0   0   0
Moses Lake     65  33  70  36  75  45 /   0   0   0   0   0   0
Wenatchee      63  40  68  43  74  48 /   0   0   0   0   0   0
Omak           66  38  70  39  76  45 /   0   0   0   0   0   0

&&

.OTX WATCHES/WARNINGS/ADVISORIES...
ID...None.
WA...None.

&&

$$