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000
FXUS66 KOTX 221801
AFDOTX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SPOKANE WA
1101 AM PDT Wed May 22 2013

.SYNOPSIS...
The Inland Northwest will remain under a broad trough through at
least the middle of next week, with disturbances riding in from
the Pacific. This set up means several opportunities for
precipitation. Temperatures are expected to remain cooler than
normal through the end of this week, before some moderation.


&&

.DISCUSSION...
Rain wrapping around a large closed low centered near Hanford as
of 1030 am will continue to slowly migrate north today. A strong
wave rotating around this low will track from southeast Washington
and the Lewiston area late this morning into Northeast Washington
and the Idaho Panhandle early this afternoon...exiting the area
into southern British Columbia this evening. A band of steady rain
will move through these areas as this wave passes through. A theta
e ridge axis extending from near Lookout Pass to Bonners Ferry
will provide an axis of heavier rainfall with additional rainfall
totals of a half to three quarters of an inch expected. This is on
top of 1-1.5 inches of rain that has already fallen such that some
places may receive rainfall totals as high as 2-2.25 inches. With
this in mind and with a report of ponding of water on roads in
Boundary county opted to upgrade the flood watches to advisories.
Also, with persistent cloud cover today high temperatures were
lowered for most areas.  JW

&&

.AVIATION...
18Z TAFS: An upper low pivoting across the Columbia Basin and then
toward western Washington over the next 24 hours will bring bands
of rain to central/eastern WA and northern ID. Coverage is
expected to be highest through 20-22z over the eastern TAF sites,
before turning showery in the afternoon. The western TAF sites
will also see a modest chance of showers, with the easterly
upslope flow providing the most prolonged threat near KEAT.
A very moist boundary layer will lead to continued MVFR CIGS this
morning with gradual improvement through the day. Confidence is less
around the western TAF sites but the more persistent upslope flow
developing into KEAT may produce lower cigs for a longer period.
Isolated afternoon thunderstorm are possible near the Cascades and
central ID panhandle mtns, generally away from TAFs. JW

&&

.PRELIMINARY POINT TEMPS/POPS...
Spokane        48  36  61  44  62  41 /  90  20  20  10  50  40
Coeur d`Alene  45  35  61  41  61  40 /  80  20  20  20  50  60
Pullman        48  34  61  40  58  40 /  90  20  20  20  60  50
Lewiston       56  39  67  46  65  46 /  90  20  20  20  60  50
Colville       48  36  66  41  69  40 /  90  60  30  20  40  50
Sandpoint      43  35  60  40  62  39 /  90  70  30  20  50  60
Kellogg        43  34  56  42  58  41 /  80  40  30  40  60  60
Moses Lake     55  40  67  45  70  44 /  50  20  30  20  30  20
Wenatchee      52  40  65  45  66  46 /  70  60  40  20  30  20
Omak           50  36  66  41  69  42 /  80  50  40  20  30  50

&&

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

$$