Area Forecast Discussion
Issued by NWS Spokane, WA

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FXUS66 KOTX 281125
AFDOTX

Area Forecast Discussion
National Weather Service Spokane WA
425 AM PDT TUE JUN 28 2016

.SYNOPSIS...
Above normal temperatures will continue through at least Friday
under mostly clear skies. A weather system will pass near or
through the region next weekend. This will result in cooler and
breezier weather with possible showers mainly over the northern
mountains.

&&

.DISCUSSION...
Today through Wednesday...The mid level wave responsible for
triggering thunderstorms overnight from the Camas Prairie into
southern Shoshone county will exit the area early this
morning...likely near or shortly before sunrise. Behind this wave
the region will remain in a southwest flow aloft. Very limited
moisture within this flow combined with mid level warming should
cap any convection that tries to develop over the mountains. Net
result will be clear to mostly clear skies through Wednesday with
850mb temperatures around 22C supporting valley highs in the upper
80s to mid 90s...which is 10 to 15 degrees above normal. JW

Thursday through Saturday: This period features a very slow,
gradual cooling. The high pressure ridge that is responsible for
our current warm temperatures will move east of our area on
Thursday. This will be in response to a digging broad trough of
low pressure coming from the Gulf of Alaska. Often times, these
events can result in windy conditions for our area. But in this
case, the cool-down is so gradual that I don`t see a strong wind
event.

For Thursday, temperatures will only be slightly cooler from
Wednesday`s readings, mainly in the Cascades. In fact, some of the
eastern areas near the MT border may not see any cooling. This is
fairly typical where cooler air is coming in but it`s offset by
the increased mixing. On Friday and Saturday, look for further
cooling of a few degrees. As for precipitation, don`t expect much.
Maybe a mountain shower or two. RJ

Sunday through Tuesday: The latest GFS comes more into agreement
with the consensus of other models in bringing an upper trough in
by Sunday to push the ridge eastward, but keeping the upper low
north of us in central or northern BC. This will mean a cooler and
breezy but mostly dry holiday weekend under westerly flow aloft,
save for a few hit-and-miss showers possible over the northern
mountains. Not much of a change for Tuesday with continued zonal
flow. /williams

&&

.AVIATION...
12Z TAFS: High pressure will be over the region today for clear
skies...except for flat cumulus over the mountains near the
Canadian border. Expect light winds and clear skies for the TAF
sites through tonight.  JW

&&

.PRELIMINARY POINT TEMPS/POPS...
Spokane        91  64  92  63  90  60 /   0   0   0  10  10   0
Coeur d`Alene  90  59  91  59  89  57 /   0   0   0  10  10   0
Pullman        89  54  89  54  87  51 /   0   0   0   0  10   0
Lewiston       97  65  97  64  95  62 /   0   0   0  10  10   0
Colville       92  55  93  56  91  54 /   0   0   0  10  10   0
Sandpoint      87  52  88  53  86  51 /   0   0   0  10  10   0
Kellogg        88  55  89  55  87  54 /   0   0   0  10  10   0
Moses Lake     96  62  96  63  93  58 /   0   0   0   0   0   0
Wenatchee      94  67  94  66  91  63 /   0   0   0   0   0   0
Omak           93  62  94  62  92  59 /   0   0   0  10  10   0

&&

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

$$


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