Area Forecast Discussion
Issued by NWS Spokane, WA

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
000
FXUS66 KOTX 281758
AFDOTX

Area Forecast Discussion
National Weather Service Spokane WA
958 AM PST WED JAN 28 2015

.SYNOPSIS...
Areas of low clouds and fog will persist across portions of
Inland Northwest as high pressure remains in place. A few weak
storm systems will affect the area into Saturday, bringing low
shower chances and cooler temperatures to the region. However the
ridge of high pressure will be the dominate feature, keeping the
threat of fog alive, before breaking down toward Sunday. The next
best threat of precipitation, including possible rain and snow,
arrives then and continues into at least early next week.

&&

.DISCUSSION...
Rest of today...Satellite indicates an almost universal field of
low clouds covering just about all terrain below 4000 feet or so
while surface observations and web cams suggest patchy fog at the
surface mainly over the rising terrain of the eastern basin this
morning. Not much is expected to change today other than a
probable eventual break out into sun in the L-C valley and the
Waterville Plateau in the next few hours. There may be some
thinning leading to sunbreaks over the Palouse this afternoon.
Otherwise the murky but somewhat mild deep winter inversion
scenario will continue. Only minor changes to forecast expected
with the morning update...mainly to end the Dense Fog Advisory
for the Upper Columbia Basin. The main foggy area appears to be
the West Plains...much like yesterday...and this area is localized
enough to handle with Nowcasts until marginal improvement this
afternoon. Otherwise high temperatures have been adjusted...usually
down a couple degrees...to account for less of a prospect fro any
break out this afternoon at most locations. /Fugazzi

&&

.AVIATION...
18Z TAFS: Another TAF period full of fog and stratus looks
promising with lower level inversions still in place. Abundant
moisture in the low levels has led to periods of drizzle around
the KGEG area. Fog persists through the AM hours before
inversions weaken with a brief break down of the ridge allowing
for much of the fog to lift into a stratus level albeit most
locations will remain in IFR conditions. With an abundance of
moisture remaining in the lower levels the stratus is expected to
persist through the night. the depth of the stratus layer will
minimize any clearing today...which should also lessen the chance
of LIFR fog overnight but IFR and LIFR stratus ceilings will
remain likely at most TAF locations. KPUW may clear out today and
remain VFR overnight as a weak easterly wind dries the boundary
layer...but all other stations will be subject to continuing IFR
ceilings. /MJF


&&

.PRELIMINARY POINT TEMPS/POPS...
Spokane        37  32  40  29  39  30 /   0   0   0   0  10  10
Coeur d`Alene  40  30  41  29  41  29 /   0   0  10  10  10  10
Pullman        43  33  45  32  44  32 /   0   0   0   0  10  10
Lewiston       48  35  47  35  46  34 /   0  10   0   0  10  10
Colville       35  30  36  26  36  26 /   0  10  10   0  10  10
Sandpoint      36  28  37  27  38  27 /  10  10  10  10  10  10
Kellogg        44  30  41  30  42  28 /  10  10  10  10  10  20
Moses Lake     38  32  41  30  39  31 /   0   0   0   0  10  10
Wenatchee      39  31  40  32  39  32 /   0  10  10   0   0  10
Omak           38  29  37  28  36  28 /   0  10  10   0  10  10

&&

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

$$



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.