Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Weather Synopsis for Monday & Saturday
Warm frontal moisture riding up and over a flat upper level ridge centered offshore around 135W will bring about a more active weather pattern to the Pacific Northwest through Tuesday afternoon. The moisture axis will be aimed into Washington State, and Mt. Hood should see relatively light amounts of preciptiation relative to areas further north. Areas like Crystal Mtn, Chinook Pass and Hurricane Ridge will be relatively blocked in this pattern, and much less precipitation is expected over the east slopes of the Cascades in general.
A gradual warming trend will accompany this storm system, with snow levels gradually rising Monday, holding nearly steady overnight and rising further on Tuesday. A second slug of moisture arriving Tuesday will increase precipitation rates during the day. Snoqualmie Pass should switch to rain as early as late Monday afternoon, while Stevens Pass will likely hold onto snow until Tuesday afternoon.
Alpine winds will become moderate out of the WNW today, and increase overnight through tomorrow. The jet core will be located over northern Washington/southwest British Columbia Tuesday afternoon with the strongest alpine winds are expected in the northeast Cascades. After an ill-defined frontal boundary passes through Tuesday evening, showers should quickly diminish and be accompanied by a cooling trend.
Weather Forecast
Olympics
| Monday | Light to occasionally moderate rain and snow, heaviest west slopes of the Olympics. Gradual warming trend. |
| Monday Night | Periods of light rain and snow. Gradual warming trend. |
| Tuesday | Light to occasionally moderate rain and snow, heaviest west slopes of the Olympics. |
| Tuesday Night | Cloudy with isolated rain and snow showers decreasing overnight. Cooling trend after midnight. |
Washington Cascades near and west of the Crest including Stevens, Snoqualmie and White Passes
| Monday | Light to moderate rain and snow, heaviest Snoqualmie Pass and Paradise. Lighter amounts expected in the Crystal/Chinook Pass area. Gradual warming trend. |
| Monday Night | Light to moderate rain and snow in the evening becoming light after midnight. |
| Tuesday | Moderate rain and snow, heaviest Stevens and Snoqualmie Passes and Paradise. Lighter precipitation Crystal/Chinook Pass area. Gradual warming trend. Increasing alpine winds. |
| Tuesday Night | Cloudy with scattered rain and snow showers decreasing overnight. Cooling trend after midnight. |
East Slopes of the Washington Cascades
| Monday | Light rain and snow, heaviest near the Cascade crest. Gradual warming trend. |
| Monday Night | Light rain and snow in the evening becoming intermittent light rain and snow after midnight. |
| Tuesday | Light to occasionally moderate rain and snow, heaviest near the Cascade crest. Gradual warming trend. Increasing alpine winds, strongest central-east and northeast Cascades. |
| Tuesday Night | Cloudy with isolated rain and snow showers decreasing overnight. Cooling trend after midnight. |
Mt. Hood
| Monday | Light to occasionally moderate rain and snow this morning becoming light in the afternoon. Gradual warming trend. |
| Monday Night | Periods of light rain and snow. |
| Tuesday | Periods of light rain and snow. Gradual warming trend. Increasing alpine winds. |
| Tuesday Night | Cloudy with scattered rain and snow showers decreasing overnight. Cooling trend after midnight. |
Issued: 7:27 AM PDT Monday, March 26, 2018
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Monday Morning | Snow Level | 3000' | 1500' | 1000' | ' | ' | 2000' | ' | 2000' |
| Monday Afternoon | Snow Level | 4000' | 3000' | 3500' | ' | ' | 3500' | ' | 3500' |
| Monday Night | Snow Level | 5000' | 3500' | 3500' | ' | ' | 4000' | ' | 4500' |
| Tuesday Morning | Snow Level | 6000' | 4000' | 4000' | ' | ' | 4000' | ' | 4500' |
| Tuesday Afternoon | Snow Level | 6000' | 4500' | 4500' | ' | ' | 5000' | ' | 6000' |
| Tuesday Night | Snow Level | 3000' | 3000' | 3000' | ' | ' | 3500' | ' | 4500' |
| Hurricane Ridge | Elevation |
|---|---|
| Monday Morning |
Snow Level 3000' |
| Monday Afternoon |
Snow Level 4000' |
| Monday Night |
Snow Level 5000' |
| Tuesday Morning |
Snow Level 6000' |
| Tuesday Afternoon |
Snow Level 6000' |
| Tuesday Night |
Snow Level 3000' |
| Mt. Baker | Elevation |
|---|---|
| Monday Morning |
Snow Level 1500' |
| Monday Afternoon |
Snow Level 3000' |
| Monday Night |
Snow Level 3500' |
| Tuesday Morning |
Snow Level 4000' |
| Tuesday Afternoon |
Snow Level 4500' |
| Tuesday Night |
Snow Level 3000' |
| Washington Pass | Elevation |
|---|---|
| Monday Morning |
Snow Level 1000' |
| Monday Afternoon |
Snow Level 3500' |
| Monday Night |
Snow Level 3500' |
| Tuesday Morning |
Snow Level 4000' |
| Tuesday Afternoon |
Snow Level 4500' |
| Tuesday Night |
Snow Level 3000' |
| Leavenworth | Elevation |
|---|---|
| Monday Morning |
Snow Level ' |
| Monday Afternoon |
Snow Level ' |
| Monday Night |
Snow Level ' |
| Tuesday Morning |
Snow Level ' |
| Tuesday Afternoon |
Snow Level ' |
| Tuesday Night |
Snow Level ' |
| Stevens Pass | Elevation |
|---|---|
| Monday Morning |
Snow Level ' |
| Monday Afternoon |
Snow Level ' |
| Monday Night |
Snow Level ' |
| Tuesday Morning |
Snow Level ' |
| Tuesday Afternoon |
Snow Level ' |
| Tuesday Night |
Snow Level ' |
| Snoqualmie Pass | Elevation |
|---|---|
| Monday Morning |
Snow Level 2000' |
| Monday Afternoon |
Snow Level 3500' |
| Monday Night |
Snow Level 4000' |
| Tuesday Morning |
Snow Level 4000' |
| Tuesday Afternoon |
Snow Level 5000' |
| Tuesday Night |
Snow Level 3500' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Monday Morning |
Snow Level ' |
| Monday Afternoon |
Snow Level ' |
| Monday Night |
Snow Level ' |
| Tuesday Morning |
Snow Level ' |
| Tuesday Afternoon |
Snow Level ' |
| Tuesday Night |
Snow Level ' |
| Mt. Hood | Elevation |
|---|---|
| Monday Morning |
Snow Level 2000' |
| Monday Afternoon |
Snow Level 3500' |
| Monday Night |
Snow Level 4500' |
| Tuesday Morning |
Snow Level 4500' |
| Tuesday Afternoon |
Snow Level 6000' |
| Tuesday Night |
Snow Level 4500' |
* Easterly flow in the Cascade Passes can cause locally lower Snow or Freezing levels than areas further west.
Freezing Level is when no precipitation is forecast.
Precipitation Forecast
| Saturday | Saturday | |
|---|---|---|
| Hurricane Ridge | LT 0.25 | LT 0.25 |
| Mt Baker Ski Area | 0.50 - 1.00 | 0 - 0.75 |
| Washington Pass | LT 0.25 | 0.25 - 0.50 |
| Stevens Pass | 1.00 - 1.50 | 1.00 - 1.50 |
| Snoqualmie Pass | 0 - 1.50 | 1.00 - 1.50 |
| Mission Ridge | LT 0.25 | LT 0.10 |
| Crystal Mt | LT 0.25 | LT 0.25 |
| Paradise | 1.00 - 1.50 | 0 - 0.75 |
| White Pass | 0.50 - 0.75 | 0.25 - 0.50 |
| Mt Hood Meadows | 0 - 0.50 | LT 0.25 |
| Timberline | 0.50 - 0.75 | LT 0.25 |
LT = less than; WE or Water equivalent is the liquid water equivalent of melted snow in hundredths of inches. As a rough approximation 1 inch of snow = about .10 inches WE, or 10 inches of snow = about 1 inch WE.
Issued: 7:27 AM PDT Monday, March 26, 2018
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Monday Morning | SW 10 - 20 | S 20 - 30 | SW 15 - 25 | --- - | WSW 15 - 25 |
| Monday Afternoon | SW 15 - 25 | S 15 - 25 | SW 15 - 25 | --- - | W 20 - 30 |
| Monday Night | SW 15 - 25 | SSW 20 - 30 | SW 15 - 30 | --- - | WSW 20 - 30 |
| Tuesday Morning | W 20 - 30 | WSW 25 - 35 | WSW 20 - 35 | --- - | W 15 - 25 |
| Tuesday Afternoon | W 20 - 30 | WSW 20 - 30 | WSW 15 - 30 | --- - | WSW 25 - 35 |
| Tuesday Night | W 10 - 20 | SW 5 - 15 | W 10 - 20 | --- - | W 20 - 30 |
| Hurricane Ridge | Elevation |
|---|---|
| Monday Morning | SW 10 - 20 |
| Monday Afternoon | SW 15 - 25 |
| Monday Night | SW 15 - 25 |
| Tuesday Morning | W 20 - 30 |
| Tuesday Afternoon | W 20 - 30 |
| Tuesday Night | W 10 - 20 |
| Mt. Baker | Elevation |
|---|---|
| Monday Morning | S 20 - 30 |
| Monday Afternoon | S 15 - 25 |
| Monday Night | SSW 20 - 30 |
| Tuesday Morning | WSW 25 - 35 |
| Tuesday Afternoon | WSW 20 - 30 |
| Tuesday Night | SW 5 - 15 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Monday Morning | SW 15 - 25 |
| Monday Afternoon | SW 15 - 25 |
| Monday Night | SW 15 - 30 |
| Tuesday Morning | WSW 20 - 35 |
| Tuesday Afternoon | WSW 15 - 30 |
| Tuesday Night | W 10 - 20 |
| Mt. Rainier | Elevation |
|---|---|
| Monday Morning | --- - |
| Monday Afternoon | --- - |
| Monday Night | --- - |
| Tuesday Morning | --- - |
| Tuesday Afternoon | --- - |
| Tuesday Night | --- - |
| Mt. Hood | Elevation |
|---|---|
| Monday Morning | WSW 15 - 25 |
| Monday Afternoon | W 20 - 30 |
| Monday Night | WSW 20 - 30 |
| Tuesday Morning | W 15 - 25 |
| Tuesday Afternoon | WSW 25 - 35 |
| Tuesday Night | W 20 - 30 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Monday Morning | SW 10 - 20 |
| Monday Afternoon | SW 15 - 25 |
| Monday Night | SW 15 - 25 |
| Tuesday Morning | W 20 - 30 |
| Tuesday Afternoon | W 20 - 30 |
| Tuesday Night | W 10 - 20 |
| Mt. Baker | Direction - Speed |
|---|---|
| Monday Morning | S 20 - 30 |
| Monday Afternoon | S 15 - 25 |
| Monday Night | SSW 20 - 30 |
| Tuesday Morning | WSW 25 - 35 |
| Tuesday Afternoon | WSW 20 - 30 |
| Tuesday Night | SW 5 - 15 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Monday Morning | SW 15 - 25 |
| Monday Afternoon | SW 15 - 25 |
| Monday Night | SW 15 - 30 |
| Tuesday Morning | WSW 20 - 35 |
| Tuesday Afternoon | WSW 15 - 30 |
| Tuesday Night | W 10 - 20 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Monday Morning | --- - |
| Monday Afternoon | --- - |
| Monday Night | --- - |
| Tuesday Morning | --- - |
| Tuesday Afternoon | --- - |
| Tuesday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Monday Morning | WSW 15 - 25 |
| Monday Afternoon | W 20 - 30 |
| Monday Night | WSW 20 - 30 |
| Tuesday Morning | W 15 - 25 |
| Tuesday Afternoon | WSW 25 - 35 |
| Tuesday Night | W 20 - 30 |
Directions above indicate the direction the wind blows from on the 16-point cardinal scale. These winds indicate "free" winds, or those winds in the atmosphere not influenced by terrain. Topographical effects may produce greater or lower wind speeds in certain locations as well as significant variations in direction.
Free Winds at 9000' (mph)
| Mt. Baker | Washington Pass | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Monday Morning | WSW 35 - 45 | SW 35 - 45 | W 30 - 40 | --- - | WNW 20 - 30 |
| Monday Afternoon | W 25 - 35 | W 25 - 35 | WNW 35 - 45 | --- - | NW 25 - 35 |
| Monday Night | WSW 30 - 40 | W 45 - 55 | WNW 35 - 50 | --- - | NW 30 - 40 |
| Tuesday Morning | W 35 - 45 | WSW 45 - 55 | WNW 45 - 55 | --- - | WNW 35 - 45 |
| Tuesday Afternoon | W 35 - 45 | W 50 - 60 | WNW 45 - 55 | --- - | NW 40 - 50 |
| Tuesday Night | W 30 - 40 | W 35 - 45 | NW 45 - 60 | --- - | NW 45 - 55 |
| Mt. Baker | Direction - Speed |
|---|---|
| Monday Morning | WSW 35 - 45 |
| Monday Afternoon | W 25 - 35 |
| Monday Night | WSW 30 - 40 |
| Tuesday Morning | W 35 - 45 |
| Tuesday Afternoon | W 35 - 45 |
| Tuesday Night | W 30 - 40 |
| Washington Pass | Direction - Speed |
|---|---|
| Monday Morning | SW 35 - 45 |
| Monday Afternoon | W 25 - 35 |
| Monday Night | W 45 - 55 |
| Tuesday Morning | WSW 45 - 55 |
| Tuesday Afternoon | W 50 - 60 |
| Tuesday Night | W 35 - 45 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Monday Morning | W 30 - 40 |
| Monday Afternoon | WNW 35 - 45 |
| Monday Night | WNW 35 - 50 |
| Tuesday Morning | WNW 45 - 55 |
| Tuesday Afternoon | WNW 45 - 55 |
| Tuesday Night | NW 45 - 60 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Monday Morning | --- - |
| Monday Afternoon | --- - |
| Monday Night | --- - |
| Tuesday Morning | --- - |
| Tuesday Afternoon | --- - |
| Tuesday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Monday Morning | WNW 20 - 30 |
| Monday Afternoon | NW 25 - 35 |
| Monday Night | NW 30 - 40 |
| Tuesday Morning | WNW 35 - 45 |
| Tuesday Afternoon | NW 40 - 50 |
| Tuesday Night | NW 45 - 55 |
Directions above indicate the direction the wind blows from on the 16-point cardinal scale. These winds indicate "free" winds, or those winds in the atmosphere not influenced by terrain. Topographical effects may produce greater or lower wind speeds in certain locations as well as significant variations in direction.
Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Previous forecast from Mar 25, 2018
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