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000
FXUS66 KOTX 230021
AFDOTX

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SPOKANE WA
521 PM PDT Wed May 22 2013

.SYNOPSIS...
a cool and wet period awaits the Inland Northwest care of a cold
upper level low. Occasional showers are expected each day through
the end of the week with cooler than normal temperatures. snow
will also be possible over the mountains. Conditions could
moderate a bit by the weekend as the low moves out of the area
but it will be replaced by another cool low sometime early next week.


&&

.DISCUSSION...
Evening update: We have lowered snow levels and added some light
snow accumulations for the far northern portions of the Idaho
Panhandle...mostly over Boundary County where moderate to heavy
precipitation continues to fall and is driving down snow levels to
elevations as low as 1800 ft. A spotter from Moyie at an elevation
of 2300` has reported one inch of snow with this activity. Most
CAMS from the area do not show accumulations on roadways so will
hold off on any winter weather highlights.

We have also increased pops and added isolated thunderstorms
across southeastern WA and lower portions of the Columbia Basin.
Breaks in the cloud cover coupled with the -30C cold pool under
the upper-low has resulted in widely scattered showers and a few
thunderstorms. At this time the main t-storm activity was over the
Pomeroy area and this may need to be expanded to the west and
north and will see how trends are the next hour before making
additional changes. /sb

&&

.AVIATION...
00Z TAFS: An upper level low pressure area centered in the vicinity
of the aviation area allows for a cluttered forecast of primarily
showers at various times, either surface based or the elevated
forced type in the forecast for most of the time interval through
00Z Friday. These showers may produce MVFR ceilings at times.
Additionally some late night and early morning fog near rivers and
northern valleys could produce brief MVFR visibilities along with
some frost as temperatures drop below freezing for a brief spell
near KPUW, KDEW...and other more favorable aviation locations.
Additionally a very small potential for thunder exists near
Cascades and vicinity KLWS and portions of North Idaho Panhandle.
/Pelatti


&&

.PRELIMINARY POINT TEMPS/POPS...
Spokane        36  60  41  60  42  64 /  20  20  20  40  30  30
Coeur d`Alene  35  59  37  60  40  64 /  20  20  20  40  40  30
Pullman        32  59  37  57  40  64 /  30  20  20  40  20  30
Lewiston       38  66  44  64  45  71 /  40  20  10  40  20  30
Colville       35  63  37  68  41  69 /  70  30  30  50  40  40
Sandpoint      34  58  35  62  39  64 /  80  30  20  50  50  40
Kellogg        34  55  37  56  41  61 /  40  30  30  50  50  40
Moses Lake     39  66  41  69  45  72 /  40  20  20  30  20  10
Wenatchee      41  63  44  66  47  69 /  60  40  30  30  20  20
Omak           35  65  37  68  42  69 /  60  30  30  40  30  30

&&

.OTX WATCHES/WARNINGS/ADVISORIES...
ID...Freeze Warning from 2 AM to 7 AM PDT Thursday for Idaho Palouse.

WA...Freeze Warning from 2 AM to 7 AM PDT Thursday for Washington
     Palouse.

&&

$$