Wow! What a beautiful day in the mountains. Sure, there are a few isolated clouds out there, but basically, it's wall-to-wall sunshine and warm temperatures. Stronger winds continue to blow in the higher terrain near the volcanoes and east of the Cascade crest. The high-pressure ridge responsible for all this spring-like weather will stay with us for another couple of days and keep us warm and dry.
The ridge shifts inland this evening, turning the upper-level flow more northwesterly. This will draw much warmer air into the PNW. Weak temperature inversions may form in some of the mountain valleys and passes, but just above, temperatures will be on the rise. By Monday morning, freezing levels should reach 9000-10500ft. Not surprisingly, we're in for another warm sunny day. 5000ft temperatures should easily make it into the upper 40s and maybe top 50F in the afternoon.
Clear skies Monday night should once again allow for a bit of nighttime cooling and temperature inversions. However, many sites might struggle to dip below freezing. While Tuesday will start warm and sunny, you'll begin to see the signs of a looming weather pattern shift. Southwesterly winds increase across the mountains in the morning. By the afternoon, clouds should roll into the region, thicken, and lower. Precipitation appears to hold off until overnight, but the message is clear, a storm is knocking on our doorstep.
Weather Forecast
Olympics
West North
West Central
West South
Stevens Pass
Snoqualmie Pass
East North
East Central
East South
Mt. Hood
Use dropdown to select your zone
Sunday
Night
Mostly clear. Temperature inversions possible with warming at mid and upper elevations.
Monday
Mostly sunny with a few passing high clouds possible.
Sunday
Night
Mostly clear. Temperature inversions possible with warming at mid and upper elevations.
Monday
Mostly sunny with a few passing high clouds possible.
Sunday
Night
Mostly clear. Temperature inversions possible with warming at mid and upper elevations.
Monday
Mostly sunny with a few passing high clouds possible.
Sunday
Night
Mostly clear. Temperature inversions possible with warming at mid and upper elevations. NW winds becoming light to moderate. Strong and gusty alpine winds.
Monday
Mostly sunny with a few passing high clouds possible. Light to moderate NW winds decreasing.
Sunday
Night
Mostly clear. Temperature inversions possible with warming at mid and upper elevations. Light and variable pass level flow.
Monday
Mostly sunny with a few passing high clouds possible. Variable pass level flow becoming W.
Sunday
Night
Mostly clear. Temperature inversions possible with warming at mid and upper elevations. Light and variable pass level flow. Ridgeline winds becoming NW moderate.
Monday
Mostly sunny with a few passing high clouds possible. Variable pass level flow becoming W. Moderate NW ridgeline winds decreasing.
Sunday
Night
Mostly clear. Temperature inversions possible with warming at mid and upper elevations. Light to moderate NW winds decreasing slightly.
Monday
Mostly sunny with a few passing high clouds possible. Winds becoming NW light to moderate.
Sunday
Night
Mostly clear. Temperature inversions possible with warming at mid and upper elevations. Winds becoming moderate from the NW.
Monday
Mostly sunny with a few passing high clouds possible. Moderate NW winds.
Sunday
Night
Mostly clear. Temperature inversions possible with warming at mid and upper elevations. Winds becoming moderate from the NW.
Monday
Mostly sunny with a few passing high clouds possible. Moderate NW winds.
Sunday
Night
Mostly clear. Temperature inversions possible with warming at mid and upper elevations. Winds becoming moderate from the NW. Strong and gusty alpine winds.
Monday
Mostly sunny with a few passing high clouds possible. Moderate NW winds decreasing in the afternoon.
Issued: 2:18 PM PDT Sunday, March 31, 2024
Precipitation (in)
Sunday Night
Monday
Monday Night
Tuesday
5 pm - 5 am
5 am - 5 pm
5 pm - 5 am
5 am - 5 pm
Hurricane Ridge
0
0
0
0
Mt Baker Ski Area
0
0
0
0
Mt. Loop - Barlow Pass
0
0
0
0
Stevens Pass
0
0
0
0
Snoqualmie Pass
0
0
0
0
Crystal Mt
0
0
0
0
Paradise
0
0
0
0
White Pass
0
0
0
0
Washington Pass
0
0
0
0
Mission Ridge
0
0
0
0
Salmon la Sac - Gallagher Head
0
0
0
0
Tieton River - Darland Mt.
0
0
0
0
Mt Hood Meadows
0
0
0
0
Timberline
0
0
0
0
Hurricane Ridge
Precipitation (in)
Sunday Night
0
Monday
0
Monday Night
0
Tuesday
0
Mt Baker Ski Area
Precipitation (in)
Sunday Night
0
Monday
0
Monday Night
0
Tuesday
0
Mt. Loop - Barlow Pass
Precipitation (in)
Sunday Night
0
Monday
0
Monday Night
0
Tuesday
0
Stevens Pass
Precipitation (in)
Sunday Night
0
Monday
0
Monday Night
0
Tuesday
0
Snoqualmie Pass
Precipitation (in)
Sunday Night
0
Monday
0
Monday Night
0
Tuesday
0
Crystal Mt
Precipitation (in)
Sunday Night
0
Monday
0
Monday Night
0
Tuesday
0
Paradise
Precipitation (in)
Sunday Night
0
Monday
0
Monday Night
0
Tuesday
0
White Pass
Precipitation (in)
Sunday Night
0
Monday
0
Monday Night
0
Tuesday
0
Washington Pass
Precipitation (in)
Sunday Night
0
Monday
0
Monday Night
0
Tuesday
0
Mission Ridge
Precipitation (in)
Sunday Night
0
Monday
0
Monday Night
0
Tuesday
0
Salmon la Sac - Gallagher Head
Precipitation (in)
Sunday Night
0
Monday
0
Monday Night
0
Tuesday
0
Tieton River - Darland Mt.
Precipitation (in)
Sunday Night
0
Monday
0
Monday Night
0
Tuesday
0
Mt Hood Meadows
Precipitation (in)
Sunday Night
0
Monday
0
Monday Night
0
Tuesday
0
Timberline
Precipitation (in)
Sunday Night
0
Monday
0
Monday Night
0
Tuesday
0
Issued: 2:18 PM PDT Sunday, March 31, 2024
Snow Level (ft)
Sunday
Evening
Sunday
Night
Monday
Morning
Monday
Afternoon
Monday
Evening
Monday
Night
Tuesday
Morning
Tuesday
Afternoon
Olympics
9500'
9500'
9500'
9500'
10000'
10000'
9500'
8500'
West North
7500'
8500'
9000'
9000'
9000'
9500'
9000'
8500'
West Central
7500'
8500'
9000'
9500'
10000'
10000'
9500'
9000'
West South
7000'
9500'
10000'
10000'
10500'
10000'
10000'
9500'
Stevens Pass
7000'
9000'
10000'
10000'
10500'
10000'
10000'
9000'
Snoqualmie Pass
7000'
9000'
10000'
10000'
10500'
10000'
10000'
9500'
East North
6500'
9000'
10000'
10000'
10000'
10000'
10000'
9000'
East Central
7000'
9000'
10000'
10000'
10500'
10000'
10000'
9500'
East South
7000'
9000'
10000'
10000'
10500'
10000'
10000'
9500'
Mt. Hood
7000'
9500'
10500'
10500'
11000'
10500'
10500'
10000'
Olympics
Elevation
Sunday
Evening
9500'
Sunday
Night
9500'
Monday
Morning
9500'
Monday
Afternoon
9500'
Monday
Evening
10000'
Monday
Night
10000'
Tuesday
Morning
9500'
Tuesday
Afternoon
8500'
West North
Elevation
Sunday
Evening
7500'
Sunday
Night
8500'
Monday
Morning
9000'
Monday
Afternoon
9000'
Monday
Evening
9000'
Monday
Night
9500'
Tuesday
Morning
9000'
Tuesday
Afternoon
8500'
West Central
Elevation
Sunday
Evening
7500'
Sunday
Night
8500'
Monday
Morning
9000'
Monday
Afternoon
9500'
Monday
Evening
10000'
Monday
Night
10000'
Tuesday
Morning
9500'
Tuesday
Afternoon
9000'
West South
Elevation
Sunday
Evening
7000'
Sunday
Night
9500'
Monday
Morning
10000'
Monday
Afternoon
10000'
Monday
Evening
10500'
Monday
Night
10000'
Tuesday
Morning
10000'
Tuesday
Afternoon
9500'
Stevens Pass
Elevation
Sunday
Evening
7000'
Sunday
Night
9000'
Monday
Morning
10000'
Monday
Afternoon
10000'
Monday
Evening
10500'
Monday
Night
10000'
Tuesday
Morning
10000'
Tuesday
Afternoon
9000'
Snoqualmie Pass
Elevation
Sunday
Evening
7000'
Sunday
Night
9000'
Monday
Morning
10000'
Monday
Afternoon
10000'
Monday
Evening
10500'
Monday
Night
10000'
Tuesday
Morning
10000'
Tuesday
Afternoon
9500'
East North
Elevation
Sunday
Evening
6500'
Sunday
Night
9000'
Monday
Morning
10000'
Monday
Afternoon
10000'
Monday
Evening
10000'
Monday
Night
10000'
Tuesday
Morning
10000'
Tuesday
Afternoon
9000'
East Central
Elevation
Sunday
Evening
7000'
Sunday
Night
9000'
Monday
Morning
10000'
Monday
Afternoon
10000'
Monday
Evening
10500'
Monday
Night
10000'
Tuesday
Morning
10000'
Tuesday
Afternoon
9500'
East South
Elevation
Sunday
Evening
7000'
Sunday
Night
9000'
Monday
Morning
10000'
Monday
Afternoon
10000'
Monday
Evening
10500'
Monday
Night
10000'
Tuesday
Morning
10000'
Tuesday
Afternoon
9500'
Mt. Hood
Elevation
Sunday
Evening
7000'
Sunday
Night
9500'
Monday
Morning
10500'
Monday
Afternoon
10500'
Monday
Evening
11000'
Monday
Night
10500'
Tuesday
Morning
10500'
Tuesday
Afternoon
10000'
Issued: 2:18 PM PDT Sunday, March 31, 2024
5000' Temperatures (°F)
Sunday
Night
Monday
Max / Min
Max / Min
Olympics
42 / 36
47 / 36
West North
41 / 32
48 / 32
West Central
43 / 30
49 / 31
West South
41 / 32
49 / 34
Stevens Pass
42 / 30
46 / 30
Snoqualmie Pass
40 / 31
46 / 32
East North
41 / 33
47 / 33
East Central
40 / 35
48 / 35
East South
42 / 34
51 / 33
Mt. Hood
40 / 33
51 / 33
Olympics
5000' Temperature Forecast (Max / Min)
Sunday
Night
42 / 36
Monday
47 / 36
West North
5000' Temperature Forecast (Max / Min)
Sunday
Night
41 / 32
Monday
48 / 32
West Central
5000' Temperature Forecast (Max / Min)
Sunday
Night
43 / 30
Monday
49 / 31
West South
5000' Temperature Forecast (Max / Min)
Sunday
Night
41 / 32
Monday
49 / 34
Stevens Pass
5000' Temperature Forecast (Max / Min)
Sunday
Night
42 / 30
Monday
46 / 30
Snoqualmie Pass
5000' Temperature Forecast (Max / Min)
Sunday
Night
40 / 31
Monday
46 / 32
East North
5000' Temperature Forecast (Max / Min)
Sunday
Night
41 / 33
Monday
47 / 33
East Central
5000' Temperature Forecast (Max / Min)
Sunday
Night
40 / 35
Monday
48 / 35
East South
5000' Temperature Forecast (Max / Min)
Sunday
Night
42 / 34
Monday
51 / 33
Mt. Hood
5000' Temperature Forecast (Max / Min)
Sunday
Night
40 / 33
Monday
51 / 33
Issued: 2:18 PM PDT Sunday, March 31, 2024
Ridgeline Winds (mph)
Sunday
Evening
Sunday
Night
Monday
Morning
Monday
Afternoon
Olympics
NNW 5-15
NW 5-15
NW 5-15
WNW 5-15
West North
W 5-15
W 5-15
W 5-15
W 5-15
West Central
NW 5-15
NW 5-15
NW 5-15
WNW 5-15
West South
NW 5-15
NW 10-20
NW 10-20
NW 5-15
Stevens Pass
WNW 5-15
WNW 5-15
WNW 5-15
WNW 5-15
Snoqualmie Pass
WNW 10-20
NW 15-25
NW 15-25
NW 10-20
East North
NW 10-20
NW 5-15
WNW 5-15
NW 10-20
East Central
NW 10-20
NW 15-25
NW 15-25
NW 15-25
East South
NW 10-20
NW 15-25
NW 15-25
NW 15-25
Mt. Hood
N 10-20
N 15-25
N 15-25
N 10-20
Olympics
Ridgeline Winds (mph)
Sunday
Evening
NNW
5-15
Sunday
Night
NW
5-15
Monday
Morning
NW
5-15
Monday
Afternoon
WNW
5-15
West North
Ridgeline Winds (mph)
Sunday
Evening
W
5-15
Sunday
Night
W
5-15
Monday
Morning
W
5-15
Monday
Afternoon
W
5-15
West Central
Ridgeline Winds (mph)
Sunday
Evening
NW
5-15
Sunday
Night
NW
5-15
Monday
Morning
NW
5-15
Monday
Afternoon
WNW
5-15
West South
Ridgeline Winds (mph)
Sunday
Evening
NW
5-15
Sunday
Night
NW
10-20
Monday
Morning
NW
10-20
Monday
Afternoon
NW
5-15
Stevens Pass
Ridgeline Winds (mph)
Sunday
Evening
WNW
5-15
Sunday
Night
WNW
5-15
Monday
Morning
WNW
5-15
Monday
Afternoon
WNW
5-15
Snoqualmie Pass
Ridgeline Winds (mph)
Sunday
Evening
WNW
10-20
Sunday
Night
NW
15-25
Monday
Morning
NW
15-25
Monday
Afternoon
NW
10-20
East North
Ridgeline Winds (mph)
Sunday
Evening
NW
10-20
Sunday
Night
NW
5-15
Monday
Morning
WNW
5-15
Monday
Afternoon
NW
10-20
East Central
Ridgeline Winds (mph)
Sunday
Evening
NW
10-20
Sunday
Night
NW
15-25
Monday
Morning
NW
15-25
Monday
Afternoon
NW
15-25
East South
Ridgeline Winds (mph)
Sunday
Evening
NW
10-20
Sunday
Night
NW
15-25
Monday
Morning
NW
15-25
Monday
Afternoon
NW
15-25
Mt. Hood
Ridgeline Winds (mph)
Sunday
Evening
N
10-20
Sunday
Night
N
15-25
Monday
Morning
N
15-25
Monday
Afternoon
N
10-20
Issued: 2:18 PM PDT Sunday, March 31, 2024
Extended Weather Synopsis
An approaching storm arrives Tuesday evening. It will take a bit for the cold front to displace the warm air, but once it does, snow levels plummet. Precipitation spreads NW to SE overnight. By Wednesday morning snow should fall below all of our Cascade Passes. There are still plenty of questions regarding the timing, track, and strength of this storm. No matter what, they all agree we're in for a significant pattern shift. Post-frontal showers and a few weak disturbances should keep cooler weather and showers in the forecast for the rest of the week.
The NWAC program is administered by the USDA-Forest Service and operates from the National Weather Service Forecast Office in Seattle. NWAC services are made possible by important collaboration and support from a wide variety of federal, state and private cooperators.
The 5000’ temperature forecast does not imply a trend over the 12 hr period and only represents the max and min temperatures within a 12 hr period in the zone. The 6-hr snow level forecast, the forecast discussion, and weather forecast sections may add detail regarding temperature trends.
The snow level forecast represents the general snow level over a 6 hr time period. Freezing levels are forecast when precipitation is not expected.
*Easterly or offshore flow is highlighted with an asterisk when we expect relatively cool east winds in the major Cascade Passes. Easterly flow will often lead to temperature inversions and is a key variable for forecasting precipitation type in the Cascade Passes. Strong easterly flow events can affect terrain on a more regional scale.
Ridgeline winds are the average wind speed and direction over a 6 hr time period.
The wind forecast represents an elevation range instead of a single elevation slice. The elevation range overlaps with the near and above treeline elevation bands in the avalanche forecast and differs per zone.
Wind direction indicates the direction the wind originates or comes from on the 16-point compass rose.
Water Equivalent (WE) is the liquid water equivalent of all precipitation types; rain, snow, ice pellets, etc., forecast to the hundredth of an inch at specific locations. To use WE as a proxy for snowfall amounts, start with a snow to water ratio of 10:1 (10 inches of snow = 1 inch WE). Temperatures at or near freezing will generally have a lower ratio (heavy wet snow) and very cold temperatures can have a much higher ratio (dry fluffy snow).