Area Forecast Discussion
Issued by NWS Spokane, WA

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FXUS66 KOTX 270943
AFDOTX

Area Forecast Discussion
National Weather Service Spokane WA
243 AM PDT Tue Jul 27 2021

.SYNOPSIS...

Above average temperatures are expected through the week, with
highs well into the 90s with some triple digit temperatures
expected by the end of the week. Otherwise the forecast remains
dry and occasionally breezy. Wildfire smoke will continue to
impact portions of the Inland Northwest.


&&

.DISCUSSION...
Today through Wednesday Night: Watching showers and elevated
convection down in southern Oregon this morning. Cam models are
showing this move northeast through the morning. It looks to
arrive in the Columbia Basin later this morning...after 8 am. The
elevated instability parameters are not impressive, so am still
going for a sprinkle forecast. Have pushed the sprinkles further
west and north today...so an area from roughly Moses Lake
northeast to Kettle Falls...and that line will progress east
through the afternoon and overnight hours...across eastern WA and
the ID Panhandle. We will see partly cloudy to cloudy skies today
from the wave moving through. Temperatures will be a couple of
degrees cooler. Enjoy it...it warms up from Wednesday onward. We
will see some breezy winds this morning down the Okanogan valley,
which will decrease in the afternoon. Then this afternoon and
evening winds will increase across the Cascade gaps into the
Columbia Basin and western Spokane and Whitman counties. Have kept
the breezy dry headline in the fire weather forecast for those
areas.

Wednesday will see temperatures warm, clouds and winds decrease
for the region. Sprinkles in the morning are possible as the wave
exits. Something to be watched is that the GFS and NAM both show a
strong wave moving up from western Oregon into the central WA
Cascades into north central and NE WA overnight Wednesday through
Thursday morning. There is very little moisture associated with
it and instability parameters are benign. /Nisbet

Thursday through Monday: Already above normal earlier in the
week, daytime temperatures trend even hotter for Thursday through
Saturday. Many locations are anticipated to push into the 100s
for Friday and Saturday. The extended forecast looks generally dry
through Saturday with high pressure draped across the region. A
trough is expected to move across eastern WA and northern ID
sometime around Saturday Night/Sunday. This would lead to chances
for showers and thunderstorms, cooler daytime temps, and breezy
winds early next week. Uncertainty in this solution remains, but
we`ll monitor any developments/changes to this scenario over the
coming days. The continuation of smoke/haze from wildfires will
also remain entrenched across much of the Inland Northwest for the
foreseeable future. /KD

&&

.AVIATION...
06Z TAFS: The most significant impact to aviation will continue
to be limited visibility due to wildfire smoke. The fires
producing the most concentrated smoke are in the north Cascades
and over north central WA, including the Methow Valley. Visibility
around these mountains will be limited at times to IFR. Limited
visibilities are also forecast for some TAF sites, occasionally
to MVFR. Moisture coming in the southwest flow will bring some
thicker middle to high clouds over SE WA and lower ID, including a
limited chance for showers. The best chances will be toward
KPUW/KLWS. /KD

&&

.PRELIMINARY POINT TEMPS/POPS...
Spokane        92  65  94  64  98  64 /  10  10  10   0   0   0
Coeur d`Alene  91  62  92  61  98  62 /  10  10  10   0   0   0
Pullman        89  60  90  58  96  59 /  10  10  10   0   0   0
Lewiston       97  73  98  69 103  71 /  10  10  10   0   0   0
Colville       94  53  96  55  99  56 /  10  10   0   0  10   0
Sandpoint      89  56  91  54  94  56 /  10  10  10   0   0   0
Kellogg        89  67  91  67  95  67 /  10  10  10   0  10   0
Moses Lake     92  61  96  63 101  66 /  10  10   0   0   0   0
Wenatchee      95  67  97  71 101  74 /   0   0   0  10   0   0
Omak           97  65  98  67 103  69 /   0   0   0   0   0   0

&&

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

&&

$$


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