After a clear night, temperatures are generally hovering around freezing at most mountain locations this morning. This afternoon, we'll see mostly sunny skies with a few high clouds. Freezing levels will rise to 7000-9500', warmest for southern zones. High temperatures at 5000' will push into the mid to upper 40s in the WA Cascades and the low 50s for Mt Hood. A light SE breeze this morning will turn westerly this afternoon as onshore flow develops.
There's little change in the benign weather pattern through Thursday. Look for another clear but a milder Wednesday night temperature-wise with free-air mid-mountain temperatures generally above freezing. Light SE flow will once again develop overnight, but this time SE winds will stick around through Thursday. An upper low will edge closer to the California coast on Thursday, and may start to rotate some high clouds northward toward Mt Hood during the afternoon hours.
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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Wednesday
Mostly sunny with a few high clouds. Light winds, becoming light to occasionally moderate in the afternoon.
Wednesday
Night
Mostly clear. Light winds.
Wednesday
Mostly sunny. Light winds, becoming light to occasionally moderate in the afternoon.
Wednesday
Night
Mostly clear. Light winds.
Wednesday
Mostly sunny with a few high clouds. Light winds, becoming light to occasionally moderate in the afternoon.
Wednesday
Night
Mostly clear. Light winds.
Wednesday
Mostly sunny with a few high clouds. Light winds, becoming light to occasionally moderate in the afternoon.
Wednesday
Night
Mostly clear. Light to occasionally moderate ridgeline winds.
Wednesday
Mostly sunny with a few high clouds. Light E-SE ridgeline Pass level and ridgeline winds in the morning, then becoming light to occasionally moderate W in the afternoon.
Wednesday
Night
Mostly clear. Light W Pass level and ridgeline winds becoming light E overnight.
Wednesday
Mostly sunny with a few high clouds. Light E-SE ridgeline Pass level and ridgeline winds in the morning, then becoming light to occasionally moderate W in the afternoon.
Wednesday
Night
Mostly clear. Light to moderate W Pass level and ridgeline winds becoming light E overnight.
Wednesday
Mostly sunny. Light winds, becoming light to occasionally moderate in the afternoon.
Wednesday
Night
Mostly clear. Light to occasionally moderate ridgeline winds.
Wednesday
Mostly sunny with a few high clouds. Light winds, becoming light to occasionally moderate in the afternoon.
Wednesday
Night
Mostly clear. Light to occasionally moderate ridgeline winds.
Wednesday
Mostly sunny with a few high clouds. Light winds, becoming light to occasionally moderate in the afternoon.
Wednesday
Night
Mostly clear. Light to occasionally moderate ridgeline winds.
Wednesday
Mostly sunny with periods of high clouds. Light to moderate ridgeline winds.
Wednesday
Night
Mostly clear. Light to occasionally moderate ridgeline winds.
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).