Area Forecast Discussion
Issued by NWS Spokane, WA

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FXUS66 KOTX 241126
AFDOTX

Area Forecast Discussion
National Weather Service Spokane WA
426 AM PDT Mon Jul 24 2017

.SYNOPSIS...
A dry cold front will keep windy conditions across the Cascades
and into the Columbia Basin. The upcoming week will be quiet and
warm except for a slight chance of mountain thunderstorms on
Wednesday afternoon. Locally breezy conditions are possible each
afternoon and evening.

&&

.DISCUSSION...
Today through Tuesday night: The passage of dry cold front
kicked up northerly winds which will persist through the first
half of the day. The strongest winds will be focused in the north
south valleys and especially in the Okanogan Valley. Pressure
gradients are expected to relax by afternoon and allow winds to
gradually subside. Temperatures will be several degrees cooler
than yesterday, although near normal for late July. In fact this
week begins the stretch for the warmest normals of the year.
Despite the reprieve from the heat, it will still remain quite dry.
Lighter winds are forecast for tonight with slightly cooler
temperatures. The ridge aloft will gradually build. Expect
slightly warmer temperatures for Tuesday with continued dry
conditions and lighter winds. /rfox.

Wednesday through Sunday: A very persistent weather pattern
continues. High pressure over the Great Basin occasionally
amplifies northward, giving us a few hot days. And then the trough
in the Gulf of Alaska will move onshore, knocking the ridge down,
giving us some breezy/cooler weather. And then the cycle repeats.
For the current forecast, the only fly in the ointment is a weak
low near Eureka that ejects into Oregon and central Idaho on
Wednesday. Models have been struggling with this. Some previous
runs had more thunderstorms over our area, but now the latest runs
have backed off on this, keeping any storms over southeast WA and
the southern Panhandle. This has been the common pattern for the
past month.

So the ridge will amplify and we`ll see warm/hot temperatures for
most of this week. And then the Gulf of Alaska low will try to
move onshore in BC this weekend, bringing breezy and slightly
cooler weather for the weekend. RJ

&&

.AVIATION...
12Z TAFS: VFR conditions will prevail through the period. Gusty
north winds will be an issue mainly near KOMK, but also in the
KMWH vicinity before 19z. Winds are expected to decrease by
afternoon with some upslope winds near KEAT and northeast winds
near KCOE overnight. Areas of smoke are possible from KOMK to KGEG
from the BC wildfires and area ones as well. High clouds will be
over southeast Washington and the southern Panhandle this morning,
while high clouds return to the north late tonight. /rfox.

&&

.FIRE WEATHER...Gusty northerly winds will continue early this
morning behind the passage of a dry cold front while humdities
gradually rise. The strongest winds will be focused in the
Okonogan Valley today. The combination of the lowest humdities and
gusty winds only seem to overlap briefly by midday today, but not
enough to warrant a Red Flag. Area of poor recoveries will
continue again tonight. Winds have tapered off in the Central
Cascades Valleys and Methow Valley. Will allow the Red Flag
Warnings to expire. /rfox

&&

.PRELIMINARY POINT TEMPS/POPS...
Spokane        86  57  89  61  92  65 /   0   0   0   0   0   0
Coeur d`Alene  85  55  89  56  91  58 /   0   0   0   0  10   0
Pullman        86  50  89  55  91  60 /   0   0   0   0  10  10
Lewiston       95  60  96  63  98  67 /   0   0   0  10  10  10
Colville       86  51  91  53  94  57 /   0   0   0   0  10   0
Sandpoint      83  47  87  49  90  52 /   0   0   0   0  10  10
Kellogg        83  52  86  55  89  58 /   0   0   0  10  10  10
Moses Lake     92  57  95  58  97  59 /   0   0   0   0   0   0
Wenatchee      90  63  92  67  94  67 /   0   0   0   0  10   0
Omak           90  60  94  60  97  61 /   0   0   0   0  10   0

&&

.OTX WATCHES/WARNINGS/ADVISORIES...
ID...None.
WA...Red Flag Warning until 3 AM PDT early this morning for East
     Washington Central Cascade Valleys (Zone 677)-East
     Washington Okanogan/Methow Valleys (Zone 684).

&&

$$



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