Issued: 7:10 AM PDT Monday, March 27, 2023
by Robert Hahn

Jump to: Weather Forecast I Precipitation I Snow Level I 5000' Temps I Ridgeline Winds I

Weather Synopsis

An upper low sliding south off the Pacific Northwest Coastline forms a rapidly deepening surface low off the Oregon Coast. The low will rotate increasing high cloud cover into the Pacific Northwest today, with more clouds in the southern parts of the region. ESE winds will also ramp up as the low deepens and a warm frontal feature approaches from the south.

Light rain and snow reach the Mt Hood area first during the evening hours, spreading into the ES Cascades overnight. ESE winds peak in the moderate to strong range for Mt Hood and the southern Washington Cascades during the evening hours as the frontal feature moves over the area. The band of most intense winds shifts into the central Washington Cascades overnight into Tuesday. Light rain and snow should spread slightly further north along the east slopes of the Cascades with light to moderate rain and snow peaking early Tuesday for Mt. Hood.

Temperatures moderate during the forecast period, particularly west of the Cascade Crest with the downslope winds. Expect the strongest winds during this period to be near the Cascades Crest, but also in the western foothills of the Cascades.

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
Monday Filtered sunshine with a few scatttered clouds in the afternoon.
Monday Night High clouds lowering and thickening.
Monday Mostly sunny with popcorn cumulus clouds in the afternoon.
Monday Night Mostly clear in the evening with increasing high clouds overnight.
Monday Mostly sunny in the morning with scattered clouds in the afternoon.
Monday Night High clouds lowering and thickening.
Monday Filtered sunshine with increasing scattered low clouds.
Monday Night Cloudy. Moderate to strong ridgeline winds (very strong gusts).
Monday Filtered sunshine with increasing scattered low clouds. Increasing light to moderate ridgeline and E wind at the Pass.
Monday Night Cloudy. Increasing moderate to strong ridgeline winds. Increasing moderate E wind at the Pass.
Monday Filtered sunshine with increasing scattered low clouds. Increasing light to moderate ridgeline and E wind at the Pass.
Monday Night Cloudy. Increasing moderate to strong (gusting extreme) ridgeline winds. Increasing moderate E wind at the Pass.
Monday Mostly sunny with scattered cumulus clouds.
Monday Night Increasing high clouds.
Monday Filtered sunshine with scattered cumulus clouds.
Monday Night High clouds lowering and thickening.
Monday Filtered sunshine, sky becomes obscured late in the day.
Monday Night High clouds lowering and thickening in the evening with light rain or snow developing in southern parts of the area overnight.
Monday Filtered sunshine, sky becomes obscured late in the day.
Monday Night Cloudy with light rain or snow possibly becomes moderate overnight. Moderate to strong ridgeline winds (extreme gusts).

Precipitation (in)

Monday Monday Night Tuesday
5 am - 5 pm 5 pm - 5 am 5 am - 5 pm
Hurricane Ridge 0 0 0
Mt Baker Ski Area 0 0 0
Mt. Loop - Barlow Pass 0 0 0
Stevens Pass 0 0 0
Snoqualmie Pass 0 0 0
Crystal Mt 0 0 LT 0.10
Paradise 0 0 LT 0.10
White Pass 0 0 LT 0.10
Washington Pass 0 0 0
Mission Ridge 0 0 LT 0.10
Salmon la Sac - Gallagher Head 0 0 LT 0.10
Tieton River - Darland Mt. 0 LT 0.10 0.25
Mt Hood Meadows 0 0.50 0.75
Timberline 0 0.50 - 0.75 0.50 - 0.75
Hurricane Ridge Precipitation (in)
Monday 0
Monday Night 0
Tuesday 0
Mt Baker Ski Area Precipitation (in)
Monday 0
Monday Night 0
Tuesday 0
Mt. Loop - Barlow Pass Precipitation (in)
Monday 0
Monday Night 0
Tuesday 0
Stevens Pass Precipitation (in)
Monday 0
Monday Night 0
Tuesday 0
Snoqualmie Pass Precipitation (in)
Monday 0
Monday Night 0
Tuesday 0
Crystal Mt Precipitation (in)
Monday 0
Monday Night 0
Tuesday LT 0.10
Paradise Precipitation (in)
Monday 0
Monday Night 0
Tuesday LT 0.10
White Pass Precipitation (in)
Monday 0
Monday Night 0
Tuesday LT 0.10
Washington Pass Precipitation (in)
Monday 0
Monday Night 0
Tuesday 0
Mission Ridge Precipitation (in)
Monday 0
Monday Night 0
Tuesday LT 0.10
Salmon la Sac - Gallagher Head Precipitation (in)
Monday 0
Monday Night 0
Tuesday LT 0.10
Tieton River - Darland Mt. Precipitation (in)
Monday 0
Monday Night LT 0.10
Tuesday 0.25
Mt Hood Meadows Precipitation (in)
Monday 0
Monday Night 0.50
Tuesday 0.75
Timberline Precipitation (in)
Monday 0
Monday Night 0.50 - 0.75
Tuesday 0.50 - 0.75

Snow Level (ft)

Monday Morning* Monday Afternoon* Monday Evening* Monday Night* Tuesday Morning* Tuesday Afternoon*
Olympics 1500' 3500' 3500' 3000' 3500' 4500'
West North 1000' 4000' 4000' 2500' 2500' 4500'
West Central 1000' 4000' 3500' 2500' 3000' 4500'
West South 1000' 4000' 3500' 3000' 2000' 3500'
Stevens Pass 1000' 4000' 3500' 2500' 3000' 4500'
Snoqualmie Pass 1000' 4000' 3500' 3000' 3000' 4500'
East North 1500' 4000' 3500' 2500' 2500' 4500'
East Central 1500' 4000' 3500' 3000' 2500' 3500'
East South 1500' 4000' 3500' 2500' 2000' 3000'
Mt. Hood 1500' 4000' 3500' 2500' 2000' 2500'
Olympics Elevation
Monday Morning* 1500'
Monday Afternoon* 3500'
Monday Evening* 3500'
Monday Night* 3000'
Tuesday Morning* 3500'
Tuesday Afternoon* 4500'
West North Elevation
Monday Morning* 1000'
Monday Afternoon* 4000'
Monday Evening* 4000'
Monday Night* 2500'
Tuesday Morning* 2500'
Tuesday Afternoon* 4500'
West Central Elevation
Monday Morning* 1000'
Monday Afternoon* 4000'
Monday Evening* 3500'
Monday Night* 2500'
Tuesday Morning* 3000'
Tuesday Afternoon* 4500'
West South Elevation
Monday Morning* 1000'
Monday Afternoon* 4000'
Monday Evening* 3500'
Monday Night* 3000'
Tuesday Morning* 2000'
Tuesday Afternoon* 3500'
Stevens Pass Elevation
Monday Morning* 1000'
Monday Afternoon* 4000'
Monday Evening* 3500'
Monday Night* 2500'
Tuesday Morning* 3000'
Tuesday Afternoon* 4500'
Snoqualmie Pass Elevation
Monday Morning* 1000'
Monday Afternoon* 4000'
Monday Evening* 3500'
Monday Night* 3000'
Tuesday Morning* 3000'
Tuesday Afternoon* 4500'
East North Elevation
Monday Morning* 1500'
Monday Afternoon* 4000'
Monday Evening* 3500'
Monday Night* 2500'
Tuesday Morning* 2500'
Tuesday Afternoon* 4500'
East Central Elevation
Monday Morning* 1500'
Monday Afternoon* 4000'
Monday Evening* 3500'
Monday Night* 3000'
Tuesday Morning* 2500'
Tuesday Afternoon* 3500'
East South Elevation
Monday Morning* 1500'
Monday Afternoon* 4000'
Monday Evening* 3500'
Monday Night* 2500'
Tuesday Morning* 2000'
Tuesday Afternoon* 3000'
Mt. Hood Elevation
Monday Morning* 1500'
Monday Afternoon* 4000'
Monday Evening* 3500'
Monday Night* 2500'
Tuesday Morning* 2000'
Tuesday Afternoon* 2500'

5000' Temperatures (°F)

Monday Monday Night
Max / Min Max / Min
Olympics 33 / 18 31 / 24
West North 34 / 18 32 / 24
West Central 33 / 19 31 / 25
West South 32 / 16 31 / 25
Stevens Pass 33 / 18 30 / 23
Snoqualmie Pass 33 / 20 30 / 25
East North 31 / 8 28 / 19
East Central 32 / 19 30 / 24
East South 32 / 18 31 / 24
Mt. Hood 34 / 20 32 / 28
Olympics 5000' Temperature Forecast
(Max / Min)
Monday 33 / 18
Monday Night 31 / 24
West North 5000' Temperature Forecast
(Max / Min)
Monday 34 / 18
Monday Night 32 / 24
West Central 5000' Temperature Forecast
(Max / Min)
Monday 33 / 19
Monday Night 31 / 25
West South 5000' Temperature Forecast
(Max / Min)
Monday 32 / 16
Monday Night 31 / 25
Stevens Pass 5000' Temperature Forecast
(Max / Min)
Monday 33 / 18
Monday Night 30 / 23
Snoqualmie Pass 5000' Temperature Forecast
(Max / Min)
Monday 33 / 20
Monday Night 30 / 25
East North 5000' Temperature Forecast
(Max / Min)
Monday 31 / 8
Monday Night 28 / 19
East Central 5000' Temperature Forecast
(Max / Min)
Monday 32 / 19
Monday Night 30 / 24
East South 5000' Temperature Forecast
(Max / Min)
Monday 32 / 18
Monday Night 31 / 24
Mt. Hood 5000' Temperature Forecast
(Max / Min)
Monday 34 / 20
Monday Night 32 / 28

Ridgeline Winds (mph)

Monday Morning Monday Afternoon Monday Evening Monday Night
Olympics SE 0-10 ESE 5-15 E 10-20 E 15-25
West North ESE 0-10 SE 5-15 ESE 10-20 ESE 10-20
West Central ESE 5-15 ESE 10-20 ESE 15-25 ESE 20-30
West South SSE 5-15 SE 15-25 ESE 20-30 SE 25-35
Stevens Pass SE 5-15 ESE 10-20 ESE 15-25 ESE 25-35
Snoqualmie Pass ESE 10-20 SE 15-25 ESE 20-30 ESE 30-40
East North SE 5-15 SE 10-20 ESE 10-20 ESE 10-20
East Central SE 5-15 ESE 10-20 ESE 15-25 ESE 20-30
East South SE 5-15 SE 10-20 ESE 10-20 ESE 10-20
Mt. Hood SSE 5-15 SSE 15-25 SE 25-35 S 15-25
Olympics Ridgeline Winds (mph)
Monday Morning SE 0-10
Monday Afternoon ESE 5-15
Monday Evening E 10-20
Monday Night E 15-25
West North Ridgeline Winds (mph)
Monday Morning ESE 0-10
Monday Afternoon SE 5-15
Monday Evening ESE 10-20
Monday Night ESE 10-20
West Central Ridgeline Winds (mph)
Monday Morning ESE 5-15
Monday Afternoon ESE 10-20
Monday Evening ESE 15-25
Monday Night ESE 20-30
West South Ridgeline Winds (mph)
Monday Morning SSE 5-15
Monday Afternoon SE 15-25
Monday Evening ESE 20-30
Monday Night SE 25-35
Stevens Pass Ridgeline Winds (mph)
Monday Morning SE 5-15
Monday Afternoon ESE 10-20
Monday Evening ESE 15-25
Monday Night ESE 25-35
Snoqualmie Pass Ridgeline Winds (mph)
Monday Morning ESE 10-20
Monday Afternoon SE 15-25
Monday Evening ESE 20-30
Monday Night ESE 30-40
East North Ridgeline Winds (mph)
Monday Morning SE 5-15
Monday Afternoon SE 10-20
Monday Evening ESE 10-20
Monday Night ESE 10-20
East Central Ridgeline Winds (mph)
Monday Morning SE 5-15
Monday Afternoon ESE 10-20
Monday Evening ESE 15-25
Monday Night ESE 20-30
East South Ridgeline Winds (mph)
Monday Morning SE 5-15
Monday Afternoon SE 10-20
Monday Evening ESE 10-20
Monday Night ESE 10-20
Mt. Hood Ridgeline Winds (mph)
Monday Morning SSE 5-15
Monday Afternoon SSE 15-25
Monday Evening SE 25-35
Monday Night S 15-25

Jump to: Weather Forecast I Precipitation I Snow Level I 5000' Temps I Ridgeline Winds I

Previous forecast from Mar 26, 2023

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).

The label LT, is shorthand for ‘less than’.