Post Falls, Idaho 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

579
FXUS66 KOTX 210554
AFDOTX

Area Forecast Discussion
National Weather Service Spokane WA
954 PM PST Wed Nov 20 2024

.SYNOPSIS...
Thursday will be cloudy with periods of rain and mountain snow.
Friday will be quite wet with the arrival of a strong warm front
causing snow levels to rise above most mountain passes by Friday
afternoon. The weekend into early next week will feature
seasonably cool temperatures and chances for rain mainly in the
valleys and periods of mountain snow.

&&

.DISCUSSION...
Evening update to increase snow amounts in the northern mountain
valleys in northeast Washington and in north Idaho. A persistent
northeast gradient will tend to advect cooler air into these
valleys, especially near the Canadian border. Models are also a
bit wetter than previously though. Precipitation amounts have
increased along with snow levels lowered down to valley floors
with additional snow expected to accumulate and keep travel slick
with snow covered roads into Thursday morning. Places like
Colville to Ione to Sandpoint and Bonners Ferry will see the
potential of an additional 2 to 5 inches and locally up to 6
inches in the Northern Panhandle. The Winter Storm Warning for
the Okanogan Highlands has been extended through 5AM Thursday, and
the Winter Weather Advisory for the Northeast Mountains, Northern
Panhandle, and Central Panhandle Mountains extended out through
10 AM on Thursday. /SVH

&&

.AVIATION...
06Z TAFS: Widespread light precipitation will continue overnight
into Thursday morning. Precipitation is expected to fall as wet
snow at airports in the northern mountain valleys that includes
Colville (CQV), Sandpoint (SZT), and Bonners Ferry (65S). Around
Deer Park (DEW) to across the Spokane/Coeur d`Alene corridor and
points southward, precipitation will fall as rain. Rain without
good upslope with winds from the east is expected to keep fog
from forming, but low stratus will result in IFR to MVFR
conditions across northeast Washington into the Idaho Panhandle.
Rain tapering off late tonight around KOMK-KEAT-KEPH-KMWH and a
moist boundary layer is more likely to result in clouds lowering
and mist or fog present with low IFR conditions possible. A weak
shortwave disturbance passing across Thursday afternoon should
produce more rain out into the basin and will see fog lifting more
into low stratus deck at this time; however, widespread IFR to
MVFR conditions is expected through the day Thursday aside from at
the Lewiston Airport (LWS) where VFR conditions are expected to
prevail.

FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS:
Confidence is high for the area to remain under a stratus deck
with MVFR conditions at KGEG-KSFF-KCOE. This will also come with
rain overnight. Low confidence on ceiling heights or dense fog
development with probability of less than half a mile below 20%
around KEAT and KMWH. /SVH

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

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        35  44  37  48  37  43 /  90  60  60 100  80  30
Coeur d`Alene  34  44  37  48  36  42 / 100  70  70 100  90  50
Pullman        36  45  39  49  35  42 /  70  70  80  90  90  50
Lewiston       41  51  44  55  39  48 /  40  40  70  80  80  40
Colville       29  40  32  42  32  41 /  90  70  60 100  80  40
Sandpoint      30  39  35  42  35  39 / 100 100  80 100  90  70
Kellogg        37  43  40  46  36  39 / 100  90  80 100 100  80
Moses Lake     35  46  38  49  35  44 /  70  50  70  90  40  10
Wenatchee      35  38  36  42  32  42 /  40  50  70  90  20  10
Omak           32  38  34  41  33  43 /  70  50  60  90  50  10

&&

.OTX WATCHES/WARNINGS/ADVISORIES...
ID...Winter Weather Advisory until 10 AM PST Thursday for Central
     Panhandle Mountains-Northern Panhandle.

WA...Winter Weather Advisory until 10 AM PST Thursday for Northeast
     Mountains.

     Winter Storm Warning until 5 AM PST Thursday for Okanogan
     Highlands.

&&

$$