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Area forecast discussion 
National Weather Service Spokane Washington
837 PM PDT Wednesday Oct 22 2014

Synopsis...
a very moist frontal boundary will produce heavy rain and high
elevation snow for the mountains and steady rain in the valleys
and basin tonight. Breezy and unsettled conditions will continue
through Thursday. A strong cold front will produce windy conditions
Saturday night into Sunday morning. The pattern will continue to
be active into early next week. This includes the potential for
widespread rain into early next week, as moisture associated with
former typhoons makes its way toward the Pacific northwest.



&&

Discussion...
the first round of precipitation is currently moving across extreme
eastern Washington into north Idaho this evening. Regional radar mosaic
shows a broad band of steady precip moving north-northeast across
the region. It looks like all but the extreme southeast corner of
the forecast area will see some light rain from this feature. The
Lewis-Clark Valley and Camas Prairie may not get measurable precip
from this feature. Pops and quantitative precipitation forecast were adjusted to account for a
quicker advancement of this warm frontal band. Some patchy fog was
added to the weather grids in response to reports of fog in the
Spokane and West Plains area. Webcams show that the problem area
could be the north Spokane area. Patchy fog was added to the
northeast valleys that are typically favorable to fog formation.
Winds were also bumped up across the Camas Prairie and into the
Lewiston area. The windy spots could see winds of 20 to 25 kts
with gusts to 40 kts. Solidly windy but still below advisory
criteria. The occluded front appears to be on track, just reaching
the Cascade crest as of 8pm. This feature has been dropping a
quick quarter inch or so as it moved inland across western Washington. It
should pass through eastern Washington by 12z then across north Idaho by 18z.
The entire forecast area should see a quick soaking as the front
passes through. /Kelch

&&

Aviation...
00z tafs: a very moist stream of Pacific moisture will enhance
over a slow moving developing warm front draped west to east
across the region today with gradually deteriorating conditions at
all taf sites except kpuw and klws...where dry downslope winds
will promote increasing clouds but generally dry conditions today.
MVFR ceilings likely in rain at keat and possibly kmwh tonight. At
the kgeg area taf sites mostly VFR showers are expected with
steady stratiform rain and occasional MVFR ceilings developing
after 04z. Tonight a trailing occluding front will sweep through
the region with heavier rain along and immediately behind the
front. A moist boundary layer even after the frontal passage will likely
promote continued MVFR (and possibly ifr) stratus ceilings
through 20z Thursday at the kgeg area taf sites and keat. Gusty
winds will help to lift low stratus after 20z Thursday. /Ek




&&

Preliminary point temps/pops...
Spokane 48 59 43 57 44 63 / 100 50 50 10 20 20
Coeur D'Alene 46 58 41 57 41 64 / 100 70 50 10 20 20
Pullman 48 59 45 59 47 69 / 90 80 50 10 40 10
Lewiston 53 63 48 64 46 72 / 40 60 50 20 40 10
Colville 48 57 41 58 41 60 / 100 60 50 10 50 30
Sandpoint 44 55 38 56 38 60 / 100 100 70 20 30 20
Kellogg 46 54 41 53 42 62 / 90 80 80 20 20 10
Moses Lake 50 64 43 61 45 63 / 90 20 10 10 40 20
Wenatchee 48 61 44 57 47 58 / 100 30 10 10 60 40
Omak 48 59 40 58 44 58 / 100 40 10 10 60 40

&&

Otx watches/warnings/advisories...
Idaho...none.
Washington...none.
&&

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