Wind Advisory 4, NWS Spokane, WA

379 
WWUS76 KOTX 221247
NPWOTX

URGENT - WEATHER MESSAGE
National Weather Service Spokane WA
547 AM PDT Wed Apr 22 2026

WAZ034-041-044-230100-
/O.CON.KOTX.WI.Y.0004.000000T0000Z-260423T0600Z/
Moses Lake Area-Wenatchee Area-Waterville Plateau-
Including the cities of Waterville, Wenatchee, Number 2 Canyon,
Entiat, Moses Lake, Number 1 Canyon, Pangborn Airport, Cashmere,
Badger Mountain Road, Chelan, Othello, Mansfield, Quincy, and
Ephrata
547 AM PDT Wed Apr 22 2026

...WIND ADVISORY REMAINS IN EFFECT UNTIL 11 PM PDT THIS EVENING...

* WHAT...West winds 20 to 30 mph with gusts up to 45 mph expected. 
  Localized gusts up to 50 mph possible.

* WHERE...Waterville, Wenatchee, Number 2 Canyon, Entiat, Moses 
  Lake, Number 1 Canyon, Pangborn Airport, Cashmere, Badger Mountain 
  Road, Chelan, Othello, Mansfield, Quincy, and Ephrata.

* WHEN...Until 11 PM PDT this evening.

* IMPACTS...Gusty winds will blow around unsecured objects. Tree 
  limbs could be blown down and a few power outages may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds this strong can make driving difficult, especially for high 
profile vehicles. Use extra caution.

&&

$$

WAZ032-230100-
/O.CON.KOTX.WI.Y.0004.260422T1500Z-260423T1200Z/
Lower Garfield and Asotin Counties-
Including the cities of Alpowa Summit, Clarkston, and Pomeroy
547 AM PDT Wed Apr 22 2026

...WIND ADVISORY REMAINS IN EFFECT UNTIL 5 AM PDT THURSDAY...

* WHAT...Southwest winds 20 to 30 mph with gusts up to 50 mph 
  expected.

* WHERE...Alpowa Summit, Clarkston, and Pomeroy.

* WHEN...Until 5 AM PDT Thursday.

* IMPACTS...Gusty winds will blow around unsecured objects. Tree 
  limbs could be blown down and a few power outages may result.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Winds this strong can make driving difficult, especially for high 
profile vehicles. Use extra caution.

&&

$$

VMT

435 
WWUS76 KOTX 230100
NPWOTX

URGENT - WEATHER MESSAGE
National Weather Service Spokane WA
600 PM PDT Wed Apr 22 2026

WAZ032-230200-
/O.CAN.KOTX.WI.Y.0004.000000T0000Z-260423T1200Z/
Lower Garfield and Asotin Counties-
Including the cities of Clarkston, Alpowa Summit, and Pomeroy
600 PM PDT Wed Apr 22 2026

...WIND ADVISORY IS CANCELLED...

THe strongest winds have subsided. 

$$

WAZ034-041-044-230200-
/O.CAN.KOTX.WI.Y.0004.000000T0000Z-260423T0600Z/
Moses Lake Area-Wenatchee Area-Waterville Plateau-
Including the cities of Number 1 Canyon, Quincy, Badger Mountain
Road, Cashmere, Othello, Entiat, Waterville, Mansfield, Chelan,
Number 2 Canyon, Ephrata, Moses Lake, Pangborn Airport, and
Wenatchee
600 PM PDT Wed Apr 22 2026

...WIND ADVISORY IS CANCELLED...

The threat has ended.

$$

OTX

Area Forecast Discussion
National Weather Service Spokane WA
1139 AM PDT Tue Apr 21 2026

.KEY MESSAGES...

- Breezy winds and increasing risk for showers and thunderstorms
  Tuesday afternoon and evening into early Wednesday morning.

- Light to moderate rains Wednesday will result in the potential
  for small stream and urban flooding in SE WA.

- Wednesday also sees gusty winds and additional chances for
  thunderstorms.

&&

.SYNOPSIS...
Unsettled weather returns Tuesday afternoon into Wednesday with
potential for moderate rains, thunderstorms, and gusty winds. Main
risks with thunderstorms will be outflow winds, small hail, and
infrequent lightning. Moderate rainfall on Wednesday could result in
small stream flooding in SE WA areas such as the Palouse. Gusty
winds and additional chances for thunderstorms will also be seen on
Wednesday.

&&

.DISCUSSION...
Today through Thursday: The ridge that brought warming temperatures
to the region is slowly moving eastward and out of the area as a low
pressure off the west coast tracks inland. By midday today, active
weather will return to the Inland Northwest as PoPs increase.
Thunderstorms and moderate rainfall will be the two main risks with
this incoming system. By Tuesday afternoon, the incoming trough
combined with a frontal passage and warm air left in the wake
of the departing ridge will create a chance for thunderstorms.
CAPE values across the forecast area are between 200-400 J/kg.
This potential will continue into Tuesday evening, and overnight
into Wednesday. Thunderstorm chances will start in the Cascades
midday Tuesday and then migrate eastward through the day, with
southeast Washington and the Central Idaho Panhandle having the
highest chances. Biggest impacts with these thunderstorms will
be gusty outflow winds, small hail, and infrequent lightning.

As the low moves northeast and a deformation zone forms, much of the
heavier precipitation will be confined to southeast Washington and
the Idaho Panhandle. The majority of the forecast area will see at
least a wetting rain (0.10 inches) by Wednesday evening. Wednesday
morning through Thursday morning, much of the Idaho Panhandle and
southeast Washington see 0.5-0.75 inches of rain. Isolated higher
rainfall totals nearing 1-1.5 inches are possible in the WA/ID
Palouse and in the foothills of the Central ID Panhandle. This will
lead to rises on rivers and streams, and possible minor small stream
and urban flooding in poor drainage areas. In particular, Kootenai
River at Bonners Ferry is forecast to go into Action Stage by early
Thursday morning. Stehekin River is seeing ongoing hydrologic
issues, and is expected to reach Minor Flood Stage by later this
morning. An important note, however, is that model spread with
precipitation totals is very high. The spread between the 75th and
25th percentile precipitation totals for Wednesday is 0.5-0.8
inches. This is because of continued model disagreement in the exact
location of the deformation zone. This is something we'll track
closely over the next day.

With the frontal passage, winds will increase Wednesday afternoon,
especially across the Cascades, Okanogan Valley and Highlands,
Waterville Plateau, Moses Lake, Basin, and northern Blues areas,
with gusts 20-25 mph expected and locally higher wind gusts near 35-
40 mph. Additionally, high temperatures will drop considerably after
the frontal passage, nearly 15-20 degrees, from Tuesday to
Wednesday. Low temperatures will not see quite as dramatic a drop,
though it will still be noticeable at 10-15 degrees.

Friday through Sunday: As the low pressure moves into the
northern central US and a trough strengthens off the coast of
Canada, dry conditions will be seen through the weekend. The one
exception will be showers in mountain areas due to orographic
lift. Clusters are in disagreement about whether the low will
retrograde westward as it interacts with another low off the
California coast, so the main message right now is that there
will overall be a warming and drying trend through the weekend.
/AS

&&

.AVIATION...
18Z TAFS: Mid and high level clouds will increase through the
morning and afternoon as a system moves inland. Showers and
thunderstorms develop between 00Z and 06Z over southeastern
Washington, and after 06Z across northeastern Washington and far
north Idaho. Main concerns with these thunderstorms will be
gusty outflow winds, small hail, and isolated lightning. Models
show a steadier band of rain moving into the Inland Northwest
after 10Z with a 30-50% chance for MVFR conditions through 18Z
tomorrow. Stronger northwest winds will develop through the
Cascade gaps and over the Palouse this evening with sustained
winds 15-20 knots and gusts up to 30 knots.

FORECAST CONFIDENCE AND/OR ALTERNATE SCENARIOS:
High confidence for VFR conditions through this evening.
Moderate confidence for MVFR conditions after 10Z across much
of the Inland Northwest with a steadier band of precipitation.
Low to moderate confidence in showers and thunderstorm chances
from 00-06Z Wednesday for PUW, LWS, MWH, and EAT. Low confidence
in timing of showers for GEG, SFF, and COE with differences
among high resolution models.

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

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        75  47  56  39  57  35 /   0  60  80  30  30  10
Coeur d'Alene  76  46  52  37  54  33 /   0  60  90  50  50  20
Pullman        69  42  48  37  52  34 /   0  70 100  60  40  20
Lewiston       75  48  53  41  57  39 /  10  70 100  60  40  20
Colville       80  47  66  39  60  34 /  10  50  60  20  20  10
Sandpoint      75  47  54  38  52  33 /  10  50  90  60  60  30
Kellogg        77  46  51  38  49  33 /  10  50 100  80  70  30
Moses Lake     78  49  66  43  66  40 /  10  60  60  10  10   0
Wenatchee      76  52  63  46  65  43 /  20  50  40  10  10   0
Omak           79  53  69  42  65  39 /  10  40  20  10   0   0

&&

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

&&