Area Forecast Discussion
Issued by NWS Spokane, WA

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FXUS66 KOTX 251750
AFDOTX

Area Forecast Discussion
National Weather Service Spokane WA
1050 AM PDT SAT APR 25 2015

.SYNOPSIS...
Showery, cool conditions will linger through today, as an upper
low edges across the Inland Northwest. This is followed by high
pressure, with warmer temperatures and dry conditions, for the
beginning of next week. The threat for showers will increase
beginning Wednesday, lasting through the end of next week.


&&

.DISCUSSION...
Morning update: Low pressure is centered over the north Cascades
this morning. One wave of precipitation that spread across the
Spokane/C`dA area is moving into the northeast mountains. However
the heating of the day under the upper trough is helping to
blossom other scattered to locally numerous showers. These will
remain most numerous across the eastern third of WA and north ID
through the evening, while being more isolated to scattered out
toward toward the western Columbia Basin. This will be mainly in
the form of rain, but some light snow has been reported in spots
above 3000 feet across the northern mountains. The threat of
significant accumulations is low. Additionally in this convective
pattern under the unstable upper trough, there could be some light
snow or graupel mixed in just about anywhere that receives a
shower. There could also be some isolated embedded thunderstorms,
again just about anywhere. However areas that are seeing more sun,
out toward the western Basin and over the eastern mountains,
should have some edge in the potential for thunder. Either way the
entire threat should begin to wane with the loss of daytime
heating, after about 6 to 7 pm. The main area that will see shower
continuing through the night will along the deformation axis,
across north Idaho. /J. Cote`

&&

.AVIATION...
18Z TAFS: An upper low will bring a threat of isolated to
scattered showers this afternoon and evening, before the threat
wanes and shifts toward the mainly the ID Panhandle after 01 to
03Z. Some isolated thunderstorms are possible, but the risk of
any passing a TAF sites is too low to mention in a TAF. Brief MVFR
conditions are possible over GEG to COE, and possibly PUW, area.
The main threat in showers will be brief downpours, small
hail/grapel, but brief gusty winds are possible. Overnight into
Sunday morning will be mainly dry with VFR conditions, though
there is some small risk for low clouds/patchy fog in the outlying
areas. /J. Cote`



&&

.PRELIMINARY POINT TEMPS/POPS...
Spokane        52  36  60  39  67  45 /  60  40  10   0   0   0
Coeur d`Alene  52  34  59  36  67  40 /  60  60  10  10   0   0
Pullman        52  34  57  37  67  43 /  60  30  10   0   0   0
Lewiston       56  39  64  41  71  44 /  50  30  10   0   0   0
Colville       55  33  63  39  71  41 /  70  70  10  10   0   0
Sandpoint      52  32  58  34  66  37 /  60  60  10  10   0   0
Kellogg        49  35  56  35  66  38 /  70  70  20  10   0   0
Moses Lake     59  35  65  41  73  45 /  30  20   0  10   0   0
Wenatchee      58  40  65  45  75  48 /  30  20  10  10   0   0
Omak           56  32  65  40  72  42 /  40  30  10  10   0   0

&&

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

$$




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