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000
FXUS66 KOTX 221117
AFDOTX

Area Forecast Discussion
National Weather Service Spokane WA
417 AM PDT Mon Apr 22 2024

.SYNOPSIS...
Mild and dry weather returns for the start of work week with 60s
and 70s by Tuesday. A subtle cooling trend arrives Wednesday into
Thursday with breezy winds and small chances for showers.
Unsettled weather continues late Thursday through the weekend with
better chances for precipitation across the lowlands.

&&

.DISCUSSION...

Mon/Tue: A weak shortwave through will bring a small chance of
showers to Northeast Washington and the northern Panhandle this
afternoon. Temperatures will peak in the 50s to 60s in most spots
later today. As a ridge moves in later tonight, Tuesday will be the
warmest day of the week under this ridge with highs in upper 60s to
mid 70s.

Wed: Wednesday will be mostly dry but a decaying upper low in BC
will bring precipitation chances (30% to the Cascade Crest) under
west flow aloft. With temperatures marginal for snow, impacts are
not expected. With a pressure gradient ~12 mb from Portland OR to
Kalispell MT, Wednesday will be breezy. There would be a very minor
concern for blowing dust in the Waterville Plateau and Upper
Columbia Basin with a 30-50% chance of gusts 30 mph or greater.

Thu through Mon:Late week remains unsettled with a weak surface low
off the WA coast bringing additional chances for showers (30-70%
chance of a wetting rain (0.10 inches or more) for eastern WA/north
ID). /Butler

&&

.AVIATION...
12z TAFS: High confidence for VFR skies across the forecast area
through the taf period. Fair cumulus buildups are expected across
far NE WA and N ID around Sandpoint, Bonners Ferry, Ione, and
Colville with a passing midlevel wave. Cigs with this activity
will vary from 5-7k ft AGL. Otherwise, A shield of cirrus moves in
from the southwest later today and into Tuesday.  /sb


FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS: High confidence in
VFR conditions. A small midlevel cloud deck around Pullman is
being driven by northwest flow but looks to be dissipating this
morning. Main uncertainty is this deck of clouds near 6k ft AGL
persists longer than expected.

-----------------------

Confidence descriptors:
Low - Less than a 30 percent chance
Moderate - 30 to 70 percent chance
High - Greater than a 70 percent chance

For additional probabilistic information for NWS Spokane airports,
please refer to the Aviation Dashboard on our webpage:
https://www.weather.gov/otx/avndashboard

&&

.PRELIMINARY POINT TEMPS/POPS...
Spokane        59  36  67  40  66  41 /   0   0   0   0   0   0
Coeur d`Alene  58  34  67  39  63  40 /   0   0   0   0   0   0
Pullman        56  34  66  41  63  40 /   0   0   0   0   0   0
Lewiston       64  39  72  46  72  45 /   0   0   0   0   0   0
Colville       61  30  68  37  66  36 /   0   0   0   0   0   0
Sandpoint      56  33  65  39  62  41 /  10   0   0   0  10  10
Kellogg        54  36  65  42  62  42 /   0   0   0   0   0   0
Moses Lake     64  35  72  42  70  41 /   0   0   0   0   0   0
Wenatchee      62  42  69  48  66  44 /   0   0   0   0   0   0
Omak           65  36  69  44  68  41 /   0   0   0   0   0   0

&&

.OTX WATCHES/WARNINGS/ADVISORIES...
ID...Frost Advisory until 8 AM PDT this morning for Lewiston Area.

WA...Frost Advisory until 8 AM PDT this morning for Moses Lake Area.

&&

$$