Post Falls, Idaho 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

813
FXUS66 KOTX 221223
AFDOTX

Area Forecast Discussion
National Weather Service Spokane WA
423 AM PST Sun Dec 22 2024

.SYNOPSIS...
Unsettled weather will continue for much of this week, with mild
temperatures and precipitation falling primarily as valley rain
and mountain snow. Check mountain pass forecasts and conditions
often before traveling. Periods of heavy mountain snow will be
possible late in the week.

&&

.DISCUSSION...
Through Monday night:
Areas of fog and low stratus will prevail this morning across
portions of the Inland Northwest, especially in valleys that
typically favor fog development. A disturbance will push through
the region later today and is anticipated to bring widespread
precipitation as it moves west to east from the Cascades into
eastern WA and northern ID. Expect mainly rain across populated
valleys and snow generally confined to elevations of 3000-3500
feet (lower in sheltered valleys in the lee of the Cascades) and
above, including light accumulations for several mountain passes.
A shortwave ridge quickly passes thru on Monday, with a brief
period of drier conditions likely for the forecast area. /KD

Tuesday through Saturday: An active, unsettled pattern continues
through next weekend with several rounds of precipitation in
store for the Inland Northwest. Monday night into Tuesday a
compact low pressure system will make landfall along the coast of
British Columbia, bringing snow to the Cascades and northern
mountains and rain elsewhere.

A brief lull in precipitation will occur Wednesday (Christmas)
morning and afternoon before a more robust system moves in
Wednesday evening. Snow amounts with this system have trended
upward over the past few ensemble runs for the Cascade Passes, so
monitoring pass conditions will be crucial if you`re planning on
traveling after the holiday. Based on current guidance, lowland
areas could potentially see some snow Wednesday night too, but
uncertainty is high at this point. A wet, troughing pattern
persists through the end of the week delivering additional rounds
of precipitation to the Inland Northwest. /Fewkes

&&

.AVIATION...
12Z TAFS: Widespread MVFR conditions and localized IFR conditions
are expected this morning in areas of fog and low stratus. The
next weather system crosses the Cascades into KEAT this afternoon,
and will spread eastward affecting other TAF sites through the
late afternoon and into Sunday night.


FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS:
There is high confidence for widespread IFR/MVFR conditions for
most of the region through at least this morning. /KD

-----------------------

Confidence descriptors:
Low - Less than a 30 percent chance
Moderate - 30 to 70 percent chance
High - Greater than a 70 percent chance

For additional probabilistic information for NWS Spokane airports,
please refer to the Aviation Dashboard on our webpage:
https:/www.weather.gov/otx/avndashboard

&&

.PRELIMINARY POINT TEMPS/POPS...
Spokane        41  37  41  35  43  31 /  10  80  10  50  80  10
Coeur d`Alene  41  35  41  34  41  32 /  10  90  30  30  90  30
Pullman        43  38  45  37  40  30 /  10 100  20  50  90  30
Lewiston       48  41  50  39  47  34 /  10  90  10  30  90  20
Colville       37  33  39  32  39  28 /  30  90  10  40  90  10
Sandpoint      38  34  39  33  38  29 /  10  90  70  30  90  40
Kellogg        41  36  39  34  39  34 /  20  90  80  30 100  50
Moses Lake     41  35  42  36  44  29 /  40  70   0  80  50   0
Wenatchee      37  33  39  35  41  30 /  70  60   0  80  40   0
Omak           36  32  39  34  39  28 /  50  90   0  70  50   0

&&

.OTX WATCHES/WARNINGS/ADVISORIES...
ID...None.
WA...Dense Fog Advisory until 10 AM PST this morning for Moses Lake
     Area-Upper Columbia Basin-Waterville Plateau.

&&

$$