076
FXUS66 KOTX 061204
AFDOTX

Area Forecast Discussion
National Weather Service Spokane WA
504 AM PDT Sun Apr 6 2025

.SYNOPSIS...
High pressure will deliver warmer temperatures for Sunday in the
mid 60s to mid 70s. Rain will return to the region Sunday into
Monday morning. Monday afternoon and Tuesday will feature cooler
temperatures, breezy winds, and a chance for afternoon and evening
thunderstorms.

&&

.DISCUSSION...

Sunday will be warm in the 60s and 70s as the high pressure ridge
shifts east into Montana. Shower chances increase in the late
afternoon in central Washington as a shortwave trough approaches the
coast. Light rain will overspread the region in the late evening and
overnight into Monday morning. Behind the band of rain, cooler air
aloft spills in and we get a conditionally unstable airmass Monday
afternoon. MUCAPEs will be around 200-400 J/kg and with an uncapped
environment, expecting fairly widespread showers tomorrow afternoon
capable of producing isolated lightning. By Monday evening, the rain
totals will be as low as 0.10" in the Columbia Basin and as high as
.5" in North Idaho and northeast Washington.

Another weak shortwave brings additional light rain Tuesday and into
Wednesday. Flow turns more westerly with this second wave so there
is a more pronounced rain shadow in central WA with precip totals
generally less than 0.10". Eastern Washington and north Idaho can
expect an additional 0.10" to 0.50" inches of rain. With snow levels
around 3500` Monday night into Tuesday, Stevens Pass can expect up
to 4" of snow. Showery conditions will continue in the mountains
through Wednesday morning before a brief dry period  sets in.

A high pressure ridge deepens in the western US Wednesday and into
Thursday. Temperatures will once again return to the 60s and 70s
Thursday before another trough arrives late in the day bringing more
precipitation chances. Unsettled conditions last through much of the
next weekend as well with temperatures in the 50s and 60s. /Butler

&&

.AVIATION...
12Z TAFS: VFR conditions will prevail through most of the TAF
period. The region will experience increasing clouds. Cloud deck
is expected to lower with increasing upper level moisture. Shower
activity is expected to begin near EAT around 06Z. MVFR ceilings
will spread from west to east around 08 to 12Z.

FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS: Moderate
confidence for MVFR ceilings after 8z tonight.
-----------------------
Confidence descriptors:
Low - Less than a 30 percent chance
Moderate - 30 to 70 percent chance
High - Greater than a 70 percent chance

&&

.PRELIMINARY POINT TEMPS/POPS...
Spokane        67  47  57  39  56  38 /   0  60  90  40  40  50
Coeur d`Alene  66  44  56  39  54  38 /   0  40 100  60  60  70
Pullman        66  46  55  38  53  38 /   0  40  90  60  50  50
Lewiston       75  50  62  43  61  42 /   0  30  90  70  40  50
Colville       67  44  56  37  56  36 /  10  70 100  60  60  70
Sandpoint      66  43  53  40  51  38 /   0  40 100  80  80  80
Kellogg        64  45  52  40  49  40 /   0  20 100  70  80  80
Moses Lake     68  49  64  40  61  38 /  10  70  50  10  20  10
Wenatchee      62  48  61  40  58  38 /  20  90  30  10  30  10
Omak           66  47  62  38  60  37 /  10  80  70  30  30  30

&&

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

$$