Area Forecast Discussion
Issued by NWS Spokane, WA

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FXUS66 KOTX 221130
AFDOTX

Area Forecast Discussion
National Weather Service Spokane WA
430 AM PDT Sun Jul 22 2018

.SYNOPSIS...
Some smoke and haze will be found across parts of the Inland
Northwest due to regional wildfires. Mainly dry weather will
persist into next week, with another warming trend starting
Monday. A few thunderstorms are possible in north Idaho by
the end of the work week. Look for hot temperatures next
weekend.


&&

.DISCUSSION...
Today through Monday night: Dry weather will continue with
temperatures pushing back above normal. Low pressure exits and a
flat ridge builds in. The mid-level westerly flow will carry some
weak disturbances across the northern CWA. Combined with
steepening afternoon lapse rates, expect some increase cloud cover
around the Cascades and northern mountains. Moisture is not deep
enough to bring an appreciable precipitation risk, save for
perhaps a limited shower and thunderstorm threat near the
Canadian border Monday afternoon when a little bit of convective
instability appears. Compared to recent days, winds will be
lighter as the flat ridge builds in. The wildcard in the forecast
will be smoke coverage from any regional wildfires, but look for
some around the deeper Columbia Basin and near the Okanogan from
the nearby fires. Temperatures will warm to near normal this
afternoon, then start to push back above normal Monday. /Cote`

Tuesday through Sunday: This period starts off with a very strong
high pressure center over the Arizona, and an axis of high
pressure extending along the west coast of North America. This
puts our area in weak northwesterly flow. Temperatures will warm
into the 90s for most valley locations for Tuesday and Wednesday
under clear skies. But by Thursday, a weak disturbance in the
northwesterly flow will kick off thunderstorms over western
Montana and the northern Panhandle. This activity could continue
on Friday for the same areas.

By the weekend, the strong high that was centered over Arizona
will migrate northward into Nevada. The high pressure ridge will
extend from that high northward over the Inland Northwest. This is
a fairly classic pattern for very hot weather in our area. There
is good model agreement with this pattern, so I warmed up the
forecast for the weekend. If it verifies, next Sunday will be the
warmest of the summer so far.  RJ

&&

.AVIATION...
12Z TAFS: Weak high pressure starts to build in. Conditions
should remain mostly clear with the exception of areas of elevated
smoke from regional wildfires, but with VFR conditions. Winds are
forecast to be less than 10kts. /Cote`


&&

.PRELIMINARY POINT TEMPS/POPS...
Spokane        85  60  90  61  91  62 /   0   0   0   0   0   0
Coeur d`Alene  84  54  88  57  90  56 /   0   0   0   0   0   0
Pullman        83  53  88  56  89  57 /   0   0   0   0   0   0
Lewiston       91  61  96  63  98  64 /   0   0   0   0   0   0
Colville       86  53  91  55  93  54 /   0   0   0   0   0   0
Sandpoint      83  50  86  52  88  51 /   0   0   0   0   0   0
Kellogg        82  52  85  54  87  54 /   0   0   0   0   0   0
Moses Lake     91  57  95  60  97  61 /   0   0   0   0   0   0
Wenatchee      90  66  93  66  95  67 /   0   0   0   0   0   0
Omak           90  60  94  62  95  62 /   0   0   0   0   0   0

&&

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

&&

$$



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