A few showers continue to dribble snow flurries, mainly in the Mountain Loop and Mt Baker areas. Elsewhere, skies are quickly becoming mostly clear with a few lingering low clouds. It should be a quiet and beautiful start to the day. Expect mostly sunny skies and generally light winds as we enjoy a break between weather systems.
The next storm won't wait its turn. High clouds start to increase around mid-day for the southern half of the region and in the afternoon for locations farther north. Ridgeline winds will turn more E-SE-S and increase significantly toward sunset. It looks like a very windy evening in the mountains. Expect the strongest and gustiest winds in the Olympics, along the southern Cascade Crest, through the mountain Passes, and near Mt Baker. While not quite as strong as some recent wind events, the gusty nature of these winds will get your attention.
A warm front lifts SSW to NNE in the late evening bringing rain and snow to the mountains. Precipitation should help quickly drag snow levels to 3000-4500 ft for most areas. Mt Hood may hang on to some warmer air for a bit longer. With a more southern bent to this storm and upslope SE winds, we expect decent precipitation along the eastern forecast zones.
Showers linger into the morning hours, but once again the trend will be for drying, clearing, and decreasing winds. Low clouds should linger the longest in the mountain gaps and along the west slopes of the Cascades. This break will once again be short-lived as our active Holiday weather pattern keeps on rolling.
Weather Forecast
Olympics
West North
West Central
West South
Stevens Pass
Snoqualmie Pass
East North
East Central
East South
Mt. Hood
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Monday
Sunny in the morning with high clouds increasing in the afternoon. Winds becoming S and increasing light to moderate.
Monday
Night
Cloudy with rain and snow developing in the evening. Strong and gusty SSE winds turning SW and decreasing slightly.
Monday
Isolated showers in the morning then significant sunbreaks. Increasing clouds late.
Monday
Night
Winds increasing significantly in the evening. Moderate to strong and gusty SSE-S winds. Rain and snow developing overnight, could be heavy at times.
Monday
A few showers mainly in the Mountain Loop area in the morning, then clearing with sunshine and low clouds. High clouds increasing in the afternoon. Light to moderate SW winds turning SSE.
Monday
Night
Cloudy with rain and snow developing in the late evening. Could be heavy at times. Moderate to strong and gusty southerly winds.
Monday
A few isolated showers around daybreak, then mostly sunny skies with some low clouds. High clouds increasing around noon. Ridgeline winds turning SE and increasing in the afternoon. Possibly becoming strong near Crystal.
Monday
Night
Cloudy with rain and snow developing in the evening. Moderate to strong and gusty SE winds in the evening. Strongest along the Cascade Crest and Passes. Decreasing slightly overnight.
Monday
Low clouds in the morning then significant sun breaks. High clouds increasing in the afternoon. Pass level flow turning E in the afternoon.
Monday
Night
Cloudy with rain and snow in the late evening. Moderate and gusty SE ridgeline winds. Moderate and gusty E pass level winds, decreasing slightly overnight.
Monday
Isolated showers and low clouds in the morning. Becoming mostly sunny with high clouds increasing in the afternoon. Light to moderate W ridgeline winds decreasing and turning SE. Pass level flow turning E in the afternoon.
Monday
Night
Cloudy with rain and snow developing in the late evening. Strong and gusty SE ridgeline winds decreasing slightly. Moderate but gusty E pass level winds decreasing towards the morning.
Monday
A few showers near the crest in the morning. Then low clouds with mostly sunny skies above. High clouds increasing late in the day. Light to moderate W winds decreasing and turning S.
Monday
Night
Cloudy with rain and snow developing overnight. Moderate but gusty SE winds decreasing slightly.
Monday
Mostly sunny with a few low clouds. High clouds increasing around lunchtime. Moderate W winds decreasing and becoming S.
Monday
Night
Cloudy with rain and snow developing overnight. Moderate but gusty SSE winds increasing.
Monday
Mostly sunny with a few low clouds. High clouds increasing around mid-day. Light to moderate W winds becoming SSE
Monday
Night
Cloudy with rain and snow developing in the evening. Moderate to strong and gusty SE winds.
Monday
Sunny in the morning with a few low clouds. High clouds increasing around lunchtime. Light to moderate W winds turning S and becoming moderate and gusty.
Monday
Night
Cloudy with rain and snow. Could be heavy at times. Strong and gusty S winds turning SSW and decreasing slightly.
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).