Area Forecast Discussion
Issued by NWS Spokane, WA

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FXUS66 KOTX 272109
AFDOTX

Area Forecast Discussion
National Weather Service Spokane WA
209 PM PDT Tue Jun 27 2017

.SYNOPSIS...
A weak weather disturbance will bring the threat of thunderstorms
to the northern mountains on Wednesday. Otherwise, the weather
will be dry and mild through the remained of the week. The weekend
will see continued dry weather but warmer temperatures. The a dry
cool front will bring breezy and milder weather to the region by
the 4th of July.

&&

.DISCUSSION...
Tonight through Thursday: The low that was partly responsible for
yesterday`s weather is still up in BC/Alberta. The northerly flow
on the backside of this low will bring the chance of thunderstorms
to form over the northern mountains of Washington and Idaho. The
models are quite disparate on this situation. They also show
surface-based instability, but most don`t show any precipitation
being generated. The ECMWF and SREF about the only models with
precipitation. I`ve decided to put a slight chance of thunder
storms for northeast WA, the Pasayten Wilderness, an the northern
Panhandle. If any storms do develop, the northerly flow has the
potential to carry them off the mountains and in to the Spokane
metro area. At this point I`ve left the mention of showers/storms
out of the Spokane/CdA forecast, but the night shift may need to
add it.

By Thursday, the offshore ridge will amplify which should push any
shower chances off to the east. This will also begin the start of
the next round of warming temperatures.  RJ

Friday through Tuesday: The ridge that was in the area will begin
to flatten into a zonal flow pattern allowing a weak push of
moisture along the Canadian border and will bring a chance of some
light precip and possible isolated lightning strike. After a
brief ridge, a trof will move into the region beginning late
Sunday. The model agreement of how deep the trof digs is pretty
low but is expected to be a drier trof with very little precip
chances. This is expected to bring breezy conditions to the
Columbia Basin as the gradient tightens across the region.
Sustained winds in the low teens and gusts into the mid 20s will
be expected. Temperatures will be near normal with highs in the
upper 70s to 80s and lows in the 50s. /JDC

&&

.AVIATION...
18Z TAFS: Expect dry weather and mostly clear skies for the next
24 hours. Persistent breezy winds will blow at KEAT, KMWH and
KGEG.  RJ




&&

.PRELIMINARY POINT TEMPS/POPS...
Spokane        56  82  57  84  60  89 /   0   0  10   0   0   0
Coeur d`Alene  53  78  53  81  55  86 /   0  10  20   0   0   0
Pullman        51  77  52  80  56  86 /   0   0   0   0   0   0
Lewiston       58  84  57  87  60  92 /   0   0   0   0   0   0
Colville       51  82  52  85  54  90 /   0  20  20   0   0   0
Sandpoint      47  78  47  79  50  83 /   0  30  30  10   0   0
Kellogg        51  75  51  78  53  83 /  10  20  20  10   0   0
Moses Lake     54  87  55  89  57  94 /   0   0   0   0   0   0
Wenatchee      59  84  59  88  62  93 /   0   0   0   0   0   0
Omak           53  85  54  88  56  92 /   0  10   0   0   0   0

&&

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

$$


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