Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Weather Synopsis for Tuesday & Saturday
A deep upper level low in the NE Pacific will send a number of Pacific frontal systems our way over the next few days. A rapidly developing low pressure system is curling toward Vancouver Island this morning. Light rain and snow has developed ahead of the cold front, currently located just off the Washington coast this morning. The front is expected to lift NE and pass through the Cascades early this afternoon.
Snow levels are quite mild this morning but will fall through the day and end up in the 4500-5500 ft range by this afternoon. This system will bring a round of locally stronger southerly winds to the Olympics and northwest Cascades through at least early afternoon. Showers should generally become light and scattered in the afternoon as a cooling trend ensues. There may be a few sunbreaks this afternoon but generally cloudy conditions should prevail along the west slopes of the Cascades. Locally heavier showers should be seen in the Mt. Baker area in this pattern with moderate new snowfall accumulations likely above 4500-5000 ft. Scattered showers will continue Tuesday night as another Pacific frontal system approaches the area.
The next frontal system will slowly move inland on Wednesday, splitting as the Pacific jet drives the bulk of the energy into northern California during the day. This should smear light to occasionally moderate precipitation across the area and make for another cloudy day. Snow levels will slightly rebound into the 4000-5000 ft range Wednesday afternoon. As the cold upper level low moves closer to the Pacific Northwest, colder air will filter into the area overnight as scattered light showers continue.
Weather Forecast
Olympics
| Tuesday | Light to occasionally moderate rain and snow, becoming scattered light rain and snow showers in the afternoon. Very Windy. Cooling trend. |
| Tuesday Night | Mostly cloudy with scattered light rain and snow showers in the evening, then light rain and snow developing after midnight. |
| Wednesday | Light to occasionally moderate rain and snow. |
| Wednesday Night | Mostly cloudy with scattered light rain and snow showers. |
Washington Cascades near and west of the Crest including Stevens, Snoqualmie and White Passes
| Tuesday | Light to occasionally moderate rain and snow, becoming scattered light rain and snow showers in the afternoon. Locally heavier showers Mt. Baker area. Windy Mt Baker area. Cooling trend. |
| Tuesday Night | Mostly cloudy with scattered light rain and snow showers. |
| Wednesday | Light rain and snow developing and becoming light to occasionally moderate in the afternoon. |
| Wednesday Night | Light rain and snow in the evening becoming mostly cloudy with scattered light rain and snow showers after midnight. |
East Slopes of the Washington Cascades
| Tuesday | Light rain and snow, becoming mostly cloudy with scattered light rain and snow showers in the afternoon. Afternoon sunbreaks possible. Slow cooling trend. |
| Tuesday Night | Partly to mostly cloudy with isolated light rain and snow showers. |
| Wednesday | Light rain and snow developing. |
| Wednesday Night | Light rain and snow in the evening becoming mostly cloudy with scattered light rain and snow showers after midnight. |
Mt. Hood
| Tuesday | Light rain and snow, becoming mostly cloudy with scattered light rain and snow showers in the afternoon. A few afternoon sunbreaks possible. Slow cooling trend. |
| Tuesday Night | Mostly cloudy with scattered light rain and snow showers. |
| Wednesday | Light rain and snow developing and becoming light to moderate in the afternoon. |
| Wednesday Night | Light rain and snow in the evening becoming mostly cloudy with scattered light rain and snow showers after midnight. |
Issued: 7:48 AM PDT Tuesday, April 10, 2018
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Tuesday Morning | Snow Level | 5500' | 6000' | 6000' | ' | ' | 6500' | ' | 7000' |
| Tuesday Afternoon | Snow Level | 4500' | 4500' | 5500' | ' | ' | 5000' | ' | 5500' |
| Tuesday Night | Snow Level | 3500' | 3500' | 4000' | ' | ' | 4000' | ' | 4000' |
| Wednesday Morning | Snow Level | 4000' | 3500' | 3500' | ' | ' | 3500' | ' | 4000' |
| Wednesday Afternoon | Snow Level | 3500' | 4000' | 4500' | ' | ' | 4500' | ' | 5000' |
| Wednesday Night | Snow Level | 2500' | 2500' | 2500' | ' | ' | 2500' | ' | 2500' |
| Hurricane Ridge | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 5500' |
| Tuesday Afternoon |
Snow Level 4500' |
| Tuesday Night |
Snow Level 3500' |
| Wednesday Morning |
Snow Level 4000' |
| Wednesday Afternoon |
Snow Level 3500' |
| Wednesday Night |
Snow Level 2500' |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 6000' |
| Tuesday Afternoon |
Snow Level 4500' |
| Tuesday Night |
Snow Level 3500' |
| Wednesday Morning |
Snow Level 3500' |
| Wednesday Afternoon |
Snow Level 4000' |
| Wednesday Night |
Snow Level 2500' |
| Washington Pass | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 6000' |
| Tuesday Afternoon |
Snow Level 5500' |
| Tuesday Night |
Snow Level 4000' |
| Wednesday Morning |
Snow Level 3500' |
| Wednesday Afternoon |
Snow Level 4500' |
| Wednesday Night |
Snow Level 2500' |
| Leavenworth | Elevation |
|---|---|
| Tuesday Morning |
Snow Level ' |
| Tuesday Afternoon |
Snow Level ' |
| Tuesday Night |
Snow Level ' |
| Wednesday Morning |
Snow Level ' |
| Wednesday Afternoon |
Snow Level ' |
| Wednesday Night |
Snow Level ' |
| Stevens Pass | Elevation |
|---|---|
| Tuesday Morning |
Snow Level ' |
| Tuesday Afternoon |
Snow Level ' |
| Tuesday Night |
Snow Level ' |
| Wednesday Morning |
Snow Level ' |
| Wednesday Afternoon |
Snow Level ' |
| Wednesday Night |
Snow Level ' |
| Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 6500' |
| Tuesday Afternoon |
Snow Level 5000' |
| Tuesday Night |
Snow Level 4000' |
| Wednesday Morning |
Snow Level 3500' |
| Wednesday Afternoon |
Snow Level 4500' |
| Wednesday Night |
Snow Level 2500' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Tuesday Morning |
Snow Level ' |
| Tuesday Afternoon |
Snow Level ' |
| Tuesday Night |
Snow Level ' |
| Wednesday Morning |
Snow Level ' |
| Wednesday Afternoon |
Snow Level ' |
| Wednesday Night |
Snow Level ' |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 7000' |
| Tuesday Afternoon |
Snow Level 5500' |
| Tuesday Night |
Snow Level 4000' |
| Wednesday Morning |
Snow Level 4000' |
| Wednesday Afternoon |
Snow Level 5000' |
| Wednesday Night |
Snow Level 2500' |
* 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 | 0.50 - 0.75 | 0 - 0.50 |
| Mt Baker Ski Area | 1.00 - 1.50 | 0 - 1.00 |
| Washington Pass | LT 0.25 | 0.25 - 0.50 |
| Stevens Pass | 0 - 0.50 | 0.50 - 0.75 |
| Snoqualmie Pass | 0 - 0.50 | 0 - 0.75 |
| Mission Ridge | LT 0.25 | LT 0.25 |
| Crystal Mt | 0.25 - 0.50 | 0.50 - 0.75 |
| Paradise | 0 - 0.50 | 0 - 0.75 |
| White Pass | LT 0.25 | 0.25 - 0.50 |
| Mt Hood Meadows | 0.25 - 0.50 | 0 - 0.75 |
| Timberline | 0 - 0.50 | 0 - 1.00 |
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: 7:48 AM PDT Tuesday, April 10, 2018
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Tuesday Morning | S 30 - 50 | SSE 25 - 40 | SSE 15 - 25 | --- - | S 5 - 15 |
| Tuesday Afternoon | SSW 20 - 30 | SSW 15 - 25 | SW 15 - 25 | --- - | SW 15 - 25 |
| Tuesday Night | S 15 - 30 | S 15 - 25 | SSW 15 - 25 | --- - | SW 15 - 25 |
| Wednesday Morning | S 25 - 35 | SE 15 - 30 | SE 15 - 25 | --- - | SE 10 - 20 |
| Wednesday Afternoon | SW 10 - 20 | S 10 - 20 | S 10 - 20 | --- - | SSW 10 - 20 |
| Wednesday Night | SW 10 - 20 | WSW 5 - 15 | WSW 10 - 20 | --- - | WSW 15 - 25 |
| Hurricane Ridge | Elevation |
|---|---|
| Tuesday Morning | S 30 - 50 |
| Tuesday Afternoon | SSW 20 - 30 |
| Tuesday Night | S 15 - 30 |
| Wednesday Morning | S 25 - 35 |
| Wednesday Afternoon | SW 10 - 20 |
| Wednesday Night | SW 10 - 20 |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Morning | SSE 25 - 40 |
| Tuesday Afternoon | SSW 15 - 25 |
| Tuesday Night | S 15 - 25 |
| Wednesday Morning | SE 15 - 30 |
| Wednesday Afternoon | S 10 - 20 |
| Wednesday Night | WSW 5 - 15 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Morning | SSE 15 - 25 |
| Tuesday Afternoon | SW 15 - 25 |
| Tuesday Night | SSW 15 - 25 |
| Wednesday Morning | SE 15 - 25 |
| Wednesday Afternoon | S 10 - 20 |
| Wednesday Night | WSW 10 - 20 |
| Mt. Rainier | Elevation |
|---|---|
| Tuesday Morning | --- - |
| Tuesday Afternoon | --- - |
| Tuesday Night | --- - |
| Wednesday Morning | --- - |
| Wednesday Afternoon | --- - |
| Wednesday Night | --- - |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Morning | S 5 - 15 |
| Tuesday Afternoon | SW 15 - 25 |
| Tuesday Night | SW 15 - 25 |
| Wednesday Morning | SE 10 - 20 |
| Wednesday Afternoon | SSW 10 - 20 |
| Wednesday Night | WSW 15 - 25 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Tuesday Morning | S 30 - 50 |
| Tuesday Afternoon | SSW 20 - 30 |
| Tuesday Night | S 15 - 30 |
| Wednesday Morning | S 25 - 35 |
| Wednesday Afternoon | SW 10 - 20 |
| Wednesday Night | SW 10 - 20 |
| Mt. Baker | Direction - Speed |
|---|---|
| Tuesday Morning | SSE 25 - 40 |
| Tuesday Afternoon | SSW 15 - 25 |
| Tuesday Night | S 15 - 25 |
| Wednesday Morning | SE 15 - 30 |
| Wednesday Afternoon | S 10 - 20 |
| Wednesday Night | WSW 5 - 15 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Tuesday Morning | SSE 15 - 25 |
| Tuesday Afternoon | SW 15 - 25 |
| Tuesday Night | SSW 15 - 25 |
| Wednesday Morning | SE 15 - 25 |
| Wednesday Afternoon | S 10 - 20 |
| Wednesday Night | WSW 10 - 20 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Tuesday Morning | --- - |
| Tuesday Afternoon | --- - |
| Tuesday Night | --- - |
| Wednesday Morning | --- - |
| Wednesday Afternoon | --- - |
| Wednesday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Tuesday Morning | S 5 - 15 |
| Tuesday Afternoon | SW 15 - 25 |
| Tuesday Night | SW 15 - 25 |
| Wednesday Morning | SE 10 - 20 |
| Wednesday Afternoon | SSW 10 - 20 |
| Wednesday Night | WSW 15 - 25 |
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 | |
|---|---|---|---|---|---|
| Tuesday Morning | S 35 - 50 | SW 20 - 30 | SW 35 - 45 | --- - | SW 45 - 55 |
| Tuesday Afternoon | SSW 30 - 40 | SW 25 - 35 | SW 30 - 40 | --- - | SW 35 - 45 |
| Tuesday Night | SSW 20 - 30 | SW 20 - 30 | SW 25 - 35 | --- - | SW 30 - 40 |
| Wednesday Morning | S 25 - 35 | S 15 - 25 | SW 20 - 30 | --- - | SW 25 - 35 |
| Wednesday Afternoon | S 30 - 40 | SSE 15 - 25 | SW 25 - 35 | --- - | SW 35 - 45 |
| Wednesday Night | WSW 15 - 25 | W 15 - 25 | WSW 25 - 35 | --- - | W 30 - 40 |
| Mt. Baker | Direction - Speed |
|---|---|
| Tuesday Morning | S 35 - 50 |
| Tuesday Afternoon | SSW 30 - 40 |
| Tuesday Night | SSW 20 - 30 |
| Wednesday Morning | S 25 - 35 |
| Wednesday Afternoon | S 30 - 40 |
| Wednesday Night | WSW 15 - 25 |
| Washington Pass | Direction - Speed |
|---|---|
| Tuesday Morning | SW 20 - 30 |
| Tuesday Afternoon | SW 25 - 35 |
| Tuesday Night | SW 20 - 30 |
| Wednesday Morning | S 15 - 25 |
| Wednesday Afternoon | SSE 15 - 25 |
| Wednesday Night | W 15 - 25 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Tuesday Morning | SW 35 - 45 |
| Tuesday Afternoon | SW 30 - 40 |
| Tuesday Night | SW 25 - 35 |
| Wednesday Morning | SW 20 - 30 |
| Wednesday Afternoon | SW 25 - 35 |
| Wednesday Night | WSW 25 - 35 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Tuesday Morning | --- - |
| Tuesday Afternoon | --- - |
| Tuesday Night | --- - |
| Wednesday Morning | --- - |
| Wednesday Afternoon | --- - |
| Wednesday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Tuesday Morning | SW 45 - 55 |
| Tuesday Afternoon | SW 35 - 45 |
| Tuesday Night | SW 30 - 40 |
| Wednesday Morning | SW 25 - 35 |
| Wednesday Afternoon | SW 35 - 45 |
| Wednesday Night | W 30 - 40 |
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.
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Previous forecast from Apr 9, 2018
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