Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Weather Synopsis for Tuesday & Thursday
A continental-scale, broad trough continues to bring cold area to the majority of North America and the Pacific Northwest will be experiencing this cold airmass in place on Tuesday morning with a slight temperature gradient across the Cascades producing light to moderate easterly pass-level winds on Tuesday. A weak shortwave ridge extends from our coastal waters up to Alaska and will help bring fair weather to the region on Tuesday. A rotating upper-level and surface low in the North Pacific will begin to move eastward, pushing the shortwave ridge further slightly eastward Tuesday afternoon into Tuesday night. Light onshore winds will develop Tuesday afternoon and as the ridge begins breaking down, increasing clouds will make their way into our region.
On Wednesday, occasional light precipitation may make its way into our region during the day, with little organization expected.
Wednesday night, a more significant warm front associated with the primary eastward-moving low will begin spreading moisture into the Washington coast by morning.
Weather Forecast
Olympics
| Tuesday | Partly sunny with Increasing clouds. |
| Tuesday Night | Mostly cloudy and gradually warming |
| Wednesday | Mostly cloudy with a chance of a few rain or snow showers. Gradual warming. |
| Wednesday Night | Clouds thickening with winds shifting to the south and more consistent light rain or snow arriving by morning. |
Washington Cascades near and west of the Crest including Stevens, Snoqualmie and White Passes
| Tuesday | Mostly sunny in the morning with increasing clouds in the afternoon. |
| Tuesday Night | Mostly cloudy with a slight chance of snow showers. |
| Wednesday | Mostly cloudy with gradual warming and a slight chance of snow showers. |
| Wednesday Night | Clouds thickening with winds shifting to the south and continued chances of rain or snow showers. |
East Slopes of the Washington Cascades
| Tuesday | Mostly sunny with areas of fog and low cloud below the inversion in the morning with increasing clouds in the afternoon. |
| Tuesday Night | Mostly cloudy with a slight chance of a snow shower. |
| Wednesday | Mostly cloudy with a slight chance of snow showers at higher elevations. |
| Wednesday Night | Clouds thickening with winds shifting to the south and continued chances of rain or snow showers at higher elevations. |
Mt. Hood
| Tuesday | Mostly sunny with areas of fog and low cloud below the inversion in the eastern part of the area in the morning with increasing clouds and a slight chance of a snow shower in the afternoon. |
| Tuesday Night | Mostly cloudy with a slight chance of rain or snow showers. Warming trend. |
| Wednesday | Cloudy with a chance of rain or snow showers. Warming continuing in the morning. |
| Wednesday Night | Clouds thickening with winds shifting to the south and continued chances of rain or snow showers. |
Issued: 7:42 AM PST Tuesday, December 26, 2017
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Tuesday Morning | Freezing Level * | 1500' | 500' | 500' | ' | ' | 500' | ' | 1000' |
| Tuesday Afternoon | Freezing Level * | 2000' | 1000' | 1000' | ' | ' | 1000' | ' | 2000' |
| Tuesday Night | Freezing Level * | 2000' | 500' | 0' | ' | ' | 1000' | ' | 3500' |
| Wednesday Morning | Snow Level * | 3000' | 1000' | 500' | ' | ' | 2000' | ' | 4500' |
| Wednesday Afternoon | Snow Level * | 3000' | 1500' | 1500' | ' | ' | 2500' | ' | 4500' |
| Wednesday Night | Snow Level * | 3500' | 2500' | 1500' | ' | ' | 2500' | ' | 4500' |
| Hurricane Ridge | Elevation |
|---|---|
| Tuesday Morning |
Freezing Level 1500' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 2000' (Easterly Flow *) |
| Tuesday Night |
Freezing Level 2000' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 3000' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 3000' (Easterly Flow *) |
| Wednesday Night |
Snow Level 3500' (Easterly Flow *) |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Morning |
Freezing Level 500' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 1000' (Easterly Flow *) |
| Tuesday Night |
Freezing Level 500' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 1000' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 1500' (Easterly Flow *) |
| Wednesday Night |
Snow Level 2500' (Easterly Flow *) |
| Washington Pass | Elevation |
|---|---|
| Tuesday Morning |
Freezing Level 500' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 1000' (Easterly Flow *) |
| Tuesday Night |
Freezing Level 0' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 500' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 1500' (Easterly Flow *) |
| Wednesday Night |
Snow Level 1500' (Easterly Flow *) |
| Leavenworth | Elevation |
|---|---|
| Tuesday Morning |
Freezing Level ' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level ' (Easterly Flow *) |
| Tuesday Night |
Freezing Level ' (Easterly Flow *) |
| Wednesday Morning |
Snow Level ' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level ' (Easterly Flow *) |
| Wednesday Night |
Snow Level ' (Easterly Flow *) |
| Stevens Pass | Elevation |
|---|---|
| Tuesday Morning |
Freezing Level ' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level ' (Easterly Flow *) |
| Tuesday Night |
Freezing Level ' (Easterly Flow *) |
| Wednesday Morning |
Snow Level ' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level ' (Easterly Flow *) |
| Wednesday Night |
Snow Level ' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Morning |
Freezing Level 500' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 1000' (Easterly Flow *) |
| Tuesday Night |
Freezing Level 1000' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 2000' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 2500' (Easterly Flow *) |
| Wednesday Night |
Snow Level 2500' (Easterly Flow *) |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Tuesday Morning |
Freezing Level ' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level ' (Easterly Flow *) |
| Tuesday Night |
Freezing Level ' (Easterly Flow *) |
| Wednesday Morning |
Snow Level ' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level ' (Easterly Flow *) |
| Wednesday Night |
Snow Level ' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Morning |
Freezing Level 1000' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 2000' (Easterly Flow *) |
| Tuesday Night |
Freezing Level 3500' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 4500' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 4500' (Easterly Flow *) |
| Wednesday Night |
Snow Level 4500' (Easterly Flow *) |
* 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
| Thursday | Thursday | |
|---|---|---|
| Hurricane Ridge | LT 0.10 | LT 0.25 |
| Mt Baker Ski Area | LT 0.10 | LT 0.25 |
| Washington Pass | LT 0.10 | LT 0.25 |
| Stevens Pass | LT 0.10 | LT 0.25 |
| Snoqualmie Pass | LT 0.10 | LT 0.25 |
| Mission Ridge | LT 0.10 | LT 0.10 |
| Crystal Mt | LT 0.10 | LT 0.25 |
| Paradise | LT 0.25 | LT 0.25 |
| White Pass | LT 0.10 | LT 0.25 |
| Mt Hood Meadows | LT 0.10 | LT 0.25 |
| Timberline | LT 0.10 | LT 0.10 |
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: 7:42 AM PST Tuesday, December 26, 2017
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Tuesday Morning | VAR 0 - 10 | SSW 5 - 15 | SSE 5 - 15 | --- - | SSE 5 - 15 |
| Tuesday Afternoon | SSW 5 - 15 | SW 5 - 15 | WSW 5 - 15 | --- - | WSW 10 - 20 |
| Tuesday Night | WSW 10 - 20 | WSW 5 - 15 | W 10 - 20 | --- - | W 20 - 30 |
| Wednesday Morning | WSW 5 - 15 | W 5 - 15 | W 10 - 20 | --- - | W 10 - 20 |
| Wednesday Afternoon | W 5 - 15 | W 5 - 15 | W 10 - 20 | --- - | W 15 - 25 |
| Wednesday Night | S 15 - 25 | S 15 - 25 | SSW 10 - 20 | --- - | SW 10 - 20 |
| Hurricane Ridge | Elevation |
|---|---|
| Tuesday Morning | VAR 0 - 10 |
| Tuesday Afternoon | SSW 5 - 15 |
| Tuesday Night | WSW 10 - 20 |
| Wednesday Morning | WSW 5 - 15 |
| Wednesday Afternoon | W 5 - 15 |
| Wednesday Night | S 15 - 25 |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Morning | SSW 5 - 15 |
| Tuesday Afternoon | SW 5 - 15 |
| Tuesday Night | WSW 5 - 15 |
| Wednesday Morning | W 5 - 15 |
| Wednesday Afternoon | W 5 - 15 |
| Wednesday Night | S 15 - 25 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Morning | SSE 5 - 15 |
| Tuesday Afternoon | WSW 5 - 15 |
| Tuesday Night | W 10 - 20 |
| Wednesday Morning | W 10 - 20 |
| Wednesday Afternoon | W 10 - 20 |
| Wednesday Night | SSW 10 - 20 |
| Mt. Rainier | Elevation |
|---|---|
| Tuesday Morning | --- - |
| Tuesday Afternoon | --- - |
| Tuesday Night | --- - |
| Wednesday Morning | --- - |
| Wednesday Afternoon | --- - |
| Wednesday Night | --- - |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Morning | SSE 5 - 15 |
| Tuesday Afternoon | WSW 10 - 20 |
| Tuesday Night | W 20 - 30 |
| Wednesday Morning | W 10 - 20 |
| Wednesday Afternoon | W 15 - 25 |
| Wednesday Night | SW 10 - 20 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Tuesday Morning | VAR 0 - 10 |
| Tuesday Afternoon | SSW 5 - 15 |
| Tuesday Night | WSW 10 - 20 |
| Wednesday Morning | WSW 5 - 15 |
| Wednesday Afternoon | W 5 - 15 |
| Wednesday Night | S 15 - 25 |
| Mt. Baker | Direction - Speed |
|---|---|
| Tuesday Morning | SSW 5 - 15 |
| Tuesday Afternoon | SW 5 - 15 |
| Tuesday Night | WSW 5 - 15 |
| Wednesday Morning | W 5 - 15 |
| Wednesday Afternoon | W 5 - 15 |
| Wednesday Night | S 15 - 25 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Tuesday Morning | SSE 5 - 15 |
| Tuesday Afternoon | WSW 5 - 15 |
| Tuesday Night | W 10 - 20 |
| Wednesday Morning | W 10 - 20 |
| Wednesday Afternoon | W 10 - 20 |
| Wednesday Night | SSW 10 - 20 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Tuesday Morning | --- - |
| Tuesday Afternoon | --- - |
| Tuesday Night | --- - |
| Wednesday Morning | --- - |
| Wednesday Afternoon | --- - |
| Wednesday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Tuesday Morning | SSE 5 - 15 |
| Tuesday Afternoon | WSW 10 - 20 |
| Tuesday Night | W 20 - 30 |
| Wednesday Morning | W 10 - 20 |
| Wednesday Afternoon | W 15 - 25 |
| Wednesday Night | SW 10 - 20 |
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 | W 15 - 25 | WSW 10 - 20 | W 15 - 25 | --- - | W 30 - 40 |
| Tuesday Afternoon | WSW 20 - 30 | WSW 20 - 30 | W 30 - 40 | --- - | WSW 35 - 50 |
| Tuesday Night | W 20 - 30 | W 20 - 30 | W 35 - 50 | --- - | W 40 - 60 |
| Wednesday Morning | W 25 - 35 | W 25 - 35 | W 35 - 50 | --- - | W 35 - 50 |
| Wednesday Afternoon | W 25 - 35 | W 20 - 30 | W 35 - 50 | --- - | W 25 - 35 |
| Wednesday Night | WSW 20 - 30 | WSW 20 - 30 | WSW 30 - 40 | --- - | WSW 25 - 35 |
| Mt. Baker | Direction - Speed |
|---|---|
| Tuesday Morning | W 15 - 25 |
| Tuesday Afternoon | WSW 20 - 30 |
| Tuesday Night | W 20 - 30 |
| Wednesday Morning | W 25 - 35 |
| Wednesday Afternoon | W 25 - 35 |
| Wednesday Night | WSW 20 - 30 |
| Washington Pass | Direction - Speed |
|---|---|
| Tuesday Morning | WSW 10 - 20 |
| Tuesday Afternoon | WSW 20 - 30 |
| Tuesday Night | W 20 - 30 |
| Wednesday Morning | W 25 - 35 |
| Wednesday Afternoon | W 20 - 30 |
| Wednesday Night | WSW 20 - 30 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Tuesday Morning | W 15 - 25 |
| Tuesday Afternoon | W 30 - 40 |
| Tuesday Night | W 35 - 50 |
| Wednesday Morning | W 35 - 50 |
| Wednesday Afternoon | W 35 - 50 |
| Wednesday Night | WSW 30 - 40 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Tuesday Morning | --- - |
| Tuesday Afternoon | --- - |
| Tuesday Night | --- - |
| Wednesday Morning | --- - |
| Wednesday Afternoon | --- - |
| Wednesday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Tuesday Morning | W 30 - 40 |
| Tuesday Afternoon | WSW 35 - 50 |
| Tuesday Night | W 40 - 60 |
| Wednesday Morning | W 35 - 50 |
| Wednesday Afternoon | W 25 - 35 |
| Wednesday Night | WSW 25 - 35 |
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 Dec 25, 2017
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