Mostly clear, with a low around 39. East wind around 6 mph.
Forecast discussion
580
FXUS66 KOTX 240543
AFDOTX
Area Forecast Discussion
National Weather Service Spokane WA
1043 PM PDT Fri May 23 2025
.KEY MESSAGES...
- Warmer through Sunday with a minor HeatRisk. Temperatures
warming into the 80s Sunday. Water temperatures remain cold.
- Scattered showers with a 10-20 percent chance of
thunderstorms Sunday night into Memorial Day.
- Breezy winds in the 30 mph range across the Basin and Cascade
Valleys for Monday.
&&
.SYNOPSIS...
Temperatures will gradually warm through Sunday as high
temperatures warm into the upper 70s and low 90s for the
weekend. There is growing potential for showers and
thunderstorms from Sunday night into Memorial Day. Warmer and
drier weather is then expected to return for much of next week.
&&
.DISCUSSION...
Tonight through Sunday: The ridge will continue to bring
warming, dry conditions through most of Sunday. An incoming
trough late Sunday will bring increasing chances of rain
showers and isolated thunderstorms. It will bring a cooldown for
Monday.
Ensembles are in good agreement on the timing and moisture with
the trough. The timing is expected to begin late Sunday
afternoon evening in the Cascades and spread East through the
overnight. With the timing in mind, the Nam Nest is showing a
band of instability developing in the leeside of the Cascades
around 1700 PDT. A slight chance of thunder threat has been
added to the area for late Sunday afternoon early evening hours.
Ensembles continue to carry decent instability over Southeast
WA, Lower Idaho Panhandle, and Northeast Washington through
Sunday night into Monday morning. Thunder chances continue in
these areas. Winds behind the trough will be breezy through the
Cascade Gapes and across the Columbia Basin with gusts into
25-35 mph possible.
High temperatures are expected to steadily increase from the
prior day for Saturday and Sunday. Saturday will see upper 70s
and 80s. The warmest day is Sunday with widespread 80s and low
90s. The timing of the trough has started t o lower the expected
highs for Monday with 70s and low 80s. Overnight lows will be in
the upper 40s and 50s. /JDC
Tuesday through Friday: Ensembles are in good agreement of an
upper ridge rebuilding over the region Tuesday and Wednesday
bringing another round of warmer temperatures. There are
indications of some flattening of the ridge Thursday into Friday
but ensembles are only showing a little bit of cooling on Friday
with Thursday just as warm as Wednesday. The potential wave
flattening the ridge will lead to a 20-30% chance of showers along
with breezy winds. Once temperatures go above normal on
Wednesday, the warmth may stay for awhile. The 8-14 day outlook
(May 31st-June 6th) from the Climate Prediction Center shows
elevated odds of warmer than normal temperatures and below normal
precipitation. JW
&&
.AVIATION...
06Z TAFS: An upper level ridge will build over the Inland
Northwest Saturday and Sunday. This will keep conditions VFR
with light winds for TAF sites through the period.
FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS: High confidence
in VFR conditions.
-----------------------
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 45 75 49 84 54 70 / 0 0 0 0 20 30
Coeur d`Alene 44 75 48 84 53 69 / 0 0 0 0 20 30
Pullman 43 73 48 81 51 67 / 0 0 0 0 20 20
Lewiston 49 80 53 89 58 75 / 0 0 0 0 20 20
Colville 40 76 43 84 48 72 / 0 0 0 0 30 50
Sandpoint 43 75 47 83 52 72 / 0 0 0 0 10 30
Kellogg 46 73 52 82 55 67 / 0 0 0 0 10 20
Moses Lake 47 81 50 89 56 77 / 0 0 0 0 50 20
Wenatchee 51 80 56 86 58 75 / 0 0 0 0 40 20
Omak 47 80 50 86 55 76 / 0 0 0 0 50 30
&&
.OTX WATCHES/WARNINGS/ADVISORIES...
WA...None.
ID...None.
&&
$$
Nearest avalanche forecast regions
St. Regis & Silver Valley
26mi away by Idaho Panhandle Avalanche Center
No data reported
St. Regis & Silver Valley
26mi away by Idaho Panhandle Avalanche Center
No data reported
Selkirks & Cabinets
86mi away by Idaho Panhandle Avalanche Center
No data reported
Selkirks & Cabinets
86mi away by Idaho Panhandle Avalanche Center
No data reported
Kootenai
86mi away by Idaho Panhandle Avalanche Center
No data reported
Rattlesnake
108mi away by West Central Montana Avalanche Center
No data reported
Bitterroot
109mi away by West Central Montana Avalanche Center
No data reported
Swan Range
125mi away by Flathead Avalanche Center
No data reported
Seeley Lake
125mi away by West Central Montana Avalanche Center
