Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Weather Synopsis for Saturday & Monday
After all the wild wet weather last week in the Olympics and Cascades, Friday was pretty benign with light winds, some sun mainly in the morning, little if any precipitation and little change in snow levels.
A elongated, split north to south oriented upper trough will move onto the US west coast on Saturday with the main stronger part of the trough moving across California. But some moisture and precipitation will move out of the south part of the trough and south to north over the Northwest. A little more precipitation should be seen on the south volcanoes by Saturday afternoon.
A little break should be seen Saturday night.
A negatively tilted or southeast to northwest oriented upper trough and front should cross the Northwest on Sunday. In the Olympics and Cascades this should cause a modest increase in alpine winds and a little more precipitation by Sunday afternoon especially on the volcanoes.
Another little break might be seen Sunday night.
Snow levels shouldn't change much on Saturday and Sunday but should be a little higher in the afternoon hours.
Weather Forecast
Olympics
| Saturday Afternoon |
Increasing light rain or snow. |
| Saturday Night |
Decreasing light showers. |
| Sunday Morning |
Increasing light rain or snow. |
| Sunday Afternoon |
Further increasing light rain or snow. |
| Sunday Night |
Decreasing light showers. |
Washington Cascades near and west of the crest including Stevens, Snoqualmie, and White Passes
| Saturday Afternoon |
Increasing light rain or snow and increasing light occasional moderate rain or snow on the southern volcanoes. |
| Saturday Night |
Decreasing light showers. |
| Sunday Morning |
Increasing light rain or snow. |
| Sunday Afternoon |
Further increasing light rain or snow in the passes and further increasing moderate rain or snow on the volcanoes. |
| Sunday Night |
Decreasing light showers. |
East slopes of the Washington Cascades
| Saturday Afternoon |
Increasing light rain or snow. |
| Saturday Night |
Decreasing light showers heaviest higher elevations. |
| Sunday Morning |
Increasing light rain or snow. |
| Sunday Afternoon |
Further increasing light rain or snow. |
| Sunday Night |
Decreasing light showers heaviest higher elevations. |
Mt. Hood Area
| Saturday Afternoon |
Increasing light occasional moderate rain or snow. |
| Saturday Night |
Decreasing light showers. |
| Sunday Morning |
Increasing light rain or snow. |
| Sunday Afternoon |
Further increasing moderate rain or snow. |
| Sunday Night |
Decreasing light showers. |
Issued: 1:33 PM PST Saturday, February 18, 2017
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Saturday Afternoon | Snow Level * | 3500' | 3500' | 2500' | ' | ' | 3500' | ' | 4000' |
| Saturday Night - Sunday Morning | Snow Level | 3000' | 3000' | 2000' | ' | ' | 3000' | ' | 3500' |
| Sunday Afternoon | Snow Level * | 3500' | 3500' | 2500' | ' | ' | 3500' | ' | 4000' |
| Sunday Night | Snow Level * | 3000' | 2500' | 1500' | ' | ' | 3000' | ' | 4000' |
| Hurricane Ridge | Elevation |
|---|---|
| Saturday Afternoon |
Snow Level 3500' (Easterly Flow *) |
| Saturday Night - Sunday Morning |
Snow Level 3000' |
| Sunday Afternoon |
Snow Level 3500' (Easterly Flow *) |
| Sunday Night |
Snow Level 3000' (Easterly Flow *) |
| Mt. Baker | Elevation |
|---|---|
| Saturday Afternoon |
Snow Level 3500' (Easterly Flow *) |
| Saturday Night - Sunday Morning |
Snow Level 3000' |
| Sunday Afternoon |
Snow Level 3500' (Easterly Flow *) |
| Sunday Night |
Snow Level 2500' (Easterly Flow *) |
| Washington Pass | Elevation |
|---|---|
| Saturday Afternoon |
Snow Level 2500' (Easterly Flow *) |
| Saturday Night - Sunday Morning |
Snow Level 2000' |
| Sunday Afternoon |
Snow Level 2500' (Easterly Flow *) |
| Sunday Night |
Snow Level 1500' (Easterly Flow *) |
| Leavenworth | Elevation |
|---|---|
| Saturday Afternoon |
Snow Level ' (Easterly Flow *) |
| Saturday Night - Sunday Morning |
Snow Level ' |
| Sunday Afternoon |
Snow Level ' (Easterly Flow *) |
| Sunday Night |
Snow Level ' (Easterly Flow *) |
| Stevens Pass | Elevation |
|---|---|
| Saturday Afternoon |
Snow Level ' (Easterly Flow *) |
| Saturday Night - Sunday Morning |
Snow Level ' |
| Sunday Afternoon |
Snow Level ' (Easterly Flow *) |
| Sunday Night |
Snow Level ' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Saturday Afternoon |
Snow Level 3500' (Easterly Flow *) |
| Saturday Night - Sunday Morning |
Snow Level 3000' |
| Sunday Afternoon |
Snow Level 3500' (Easterly Flow *) |
| Sunday Night |
Snow Level 3000' (Easterly Flow *) |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Saturday Afternoon |
Snow Level ' (Easterly Flow *) |
| Saturday Night - Sunday Morning |
Snow Level ' |
| Sunday Afternoon |
Snow Level ' (Easterly Flow *) |
| Sunday Night |
Snow Level ' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Saturday Afternoon |
Snow Level 4000' (Easterly Flow *) |
| Saturday Night - Sunday Morning |
Snow Level 3500' |
| Sunday Afternoon |
Snow Level 4000' (Easterly Flow *) |
| Sunday Night |
Snow Level 4000' (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
| Monday | Monday | |
|---|---|---|
| Hurricane Ridge | LT 0.25 | LT 0.25 |
| Mt Baker Ski Area | LT 0.25 | 0.75 - 1.00 |
| Washington Pass | LT 0.25 | LT 0.25 |
| Stevens Pass | LT 0.25 | 0.25 - 0.50 |
| Snoqualmie Pass | LT 0.25 | 0 - 0.50 |
| Mission Ridge | LT 0.25 | LT 0.25 |
| Crystal Mt | LT 0.25 | 0 - 0.75 |
| Paradise | 0 - 0.50 | 0 - 1.00 |
| White Pass | LT 0.25 | 0.25 - 0.50 |
| Mt Hood Meadows | 0.50 - 0.75 | 0.75 - 1.00 |
| Timberline | 0 - 0.75 | 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: 1:33 PM PST Saturday, February 18, 2017
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Saturday Afternoon | SW 5 - 15 | SW 0 - 10 | SW 5 - 15 | --- - | SW 10 - 20 |
| Saturday Night | SSW 15 - 25 | SSW 10 - 20 | SSW 15 - 25 | --- - | SSW 20 - 30 |
| Sunday Morning | SSW 20 - 30 | SSW 15 - 25 | SSW 15 - 25 | --- - | SSW 15 - 25 |
| Sunday Afternoon | SSW 25 - 35 | SSW 20 - 30 | SSW 20 - 30 | --- - | SSW 20 - 30 |
| Sunday Night | SW 15 - 25 | SSW 15 - 25 | SSE 10 - 20 | --- - | SSE 10 - 20 |
| Hurricane Ridge | Elevation |
|---|---|
| Saturday Afternoon | SW 5 - 15 |
| Saturday Night | SSW 15 - 25 |
| Sunday Morning | SSW 20 - 30 |
| Sunday Afternoon | SSW 25 - 35 |
| Sunday Night | SW 15 - 25 |
| Mt. Baker | Elevation |
|---|---|
| Saturday Afternoon | SW 0 - 10 |
| Saturday Night | SSW 10 - 20 |
| Sunday Morning | SSW 15 - 25 |
| Sunday Afternoon | SSW 20 - 30 |
| Sunday Night | SSW 15 - 25 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Saturday Afternoon | SW 5 - 15 |
| Saturday Night | SSW 15 - 25 |
| Sunday Morning | SSW 15 - 25 |
| Sunday Afternoon | SSW 20 - 30 |
| Sunday Night | SSE 10 - 20 |
| Mt. Rainier | Elevation |
|---|---|
| Saturday Afternoon | --- - |
| Saturday Night | --- - |
| Sunday Morning | --- - |
| Sunday Afternoon | --- - |
| Sunday Night | --- - |
| Mt. Hood | Elevation |
|---|---|
| Saturday Afternoon | SW 10 - 20 |
| Saturday Night | SSW 20 - 30 |
| Sunday Morning | SSW 15 - 25 |
| Sunday Afternoon | SSW 20 - 30 |
| Sunday Night | SSE 10 - 20 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Saturday Afternoon | SW 5 - 15 |
| Saturday Night | SSW 15 - 25 |
| Sunday Morning | SSW 20 - 30 |
| Sunday Afternoon | SSW 25 - 35 |
| Sunday Night | SW 15 - 25 |
| Mt. Baker | Direction - Speed |
|---|---|
| Saturday Afternoon | SW 0 - 10 |
| Saturday Night | SSW 10 - 20 |
| Sunday Morning | SSW 15 - 25 |
| Sunday Afternoon | SSW 20 - 30 |
| Sunday Night | SSW 15 - 25 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Saturday Afternoon | SW 5 - 15 |
| Saturday Night | SSW 15 - 25 |
| Sunday Morning | SSW 15 - 25 |
| Sunday Afternoon | SSW 20 - 30 |
| Sunday Night | SSE 10 - 20 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Saturday Afternoon | --- - |
| Saturday Night | --- - |
| Sunday Morning | --- - |
| Sunday Afternoon | --- - |
| Sunday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Saturday Afternoon | SW 10 - 20 |
| Saturday Night | SSW 20 - 30 |
| Sunday Morning | SSW 15 - 25 |
| Sunday Afternoon | SSW 20 - 30 |
| Sunday Night | SSE 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 | |
|---|---|---|---|---|---|
| Saturday Afternoon | SW 15 - 25 | SW 10 - 20 | SW 15 - 25 | --- - | SW 20 - 30 |
| Saturday Night | SSW 20 - 30 | SSW 10 - 20 | SSW 20 - 30 | --- - | SW 35 - 50 |
| Sunday Morning | SSW 25 - 35 | SSW 20 - 30 | SSW 25 - 35 | --- - | SW 30 - 45 |
| Sunday Afternoon | SW 25 - 35 | SW 20 - 30 | SW 40 - 60 | --- - | SW 40 - 60 |
| Sunday Night | SW 25 - 35 | SW 25 - 35 | SW 25 - 35 | --- - | SW 25 - 35 |
| Mt. Baker | Direction - Speed |
|---|---|
| Saturday Afternoon | SW 15 - 25 |
| Saturday Night | SSW 20 - 30 |
| Sunday Morning | SSW 25 - 35 |
| Sunday Afternoon | SW 25 - 35 |
| Sunday Night | SW 25 - 35 |
| Washington Pass | Direction - Speed |
|---|---|
| Saturday Afternoon | SW 10 - 20 |
| Saturday Night | SSW 10 - 20 |
| Sunday Morning | SSW 20 - 30 |
| Sunday Afternoon | SW 20 - 30 |
| Sunday Night | SW 25 - 35 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Saturday Afternoon | SW 15 - 25 |
| Saturday Night | SSW 20 - 30 |
| Sunday Morning | SSW 25 - 35 |
| Sunday Afternoon | SW 40 - 60 |
| Sunday Night | SW 25 - 35 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Saturday Afternoon | --- - |
| Saturday Night | --- - |
| Sunday Morning | --- - |
| Sunday Afternoon | --- - |
| Sunday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Saturday Afternoon | SW 20 - 30 |
| Saturday Night | SW 35 - 50 |
| Sunday Morning | SW 30 - 45 |
| Sunday Afternoon | SW 40 - 60 |
| Sunday Night | SW 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.
Issued: 1:33 PM PST Saturday, February 18, 2017
Extended Weather Synopsis for Monday night through Monday
A large weak trough will shift slowly east over the northeast Pacific Ocean on Monday and Tuesday with the main southwest flow over Oregon and California. A frontal system in this flow will clip the Northwest on Monday and Tuesday.
The large weak trough will move to the US west coast with the strong part of the trough and the main flow moving across California (sounds familiar).
A cooling trend should be seen Monday to Wednesday.
Extended Weather
Olympics, Washington Cascades, Mt Hood
Increasing moderate rain or snow heaviest near and west of the Cascade crest.
Decreasing showers heaviest near and west of the Cascade crest.
Increasing light showers heaviest near and west of the Cascade crest.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Monday | Snow Level | 2500' - 3500' | 3000' - 4000' | 4000' - 5000' | |
| Tuesday | Snow Level | 2000' - 3000' | 2500' - 3500' | 3000' - 4000' | |
| Wednesday | Snow Level | 1000' - 2000' | 1000' - 2000' | 1500' - 2500' |
| Mt. Baker | Elevation |
|---|---|
| Monday |
Snow Level 2500' - 3500' |
| Tuesday |
Snow Level 2000' - 3000' |
| Wednesday |
Snow Level 1000' - 2000' |
| Snoqualmie Pass | Elevation |
|---|---|
| Monday |
Snow Level 3000' - 4000' |
| Tuesday |
Snow Level 2500' - 3500' |
| Wednesday |
Snow Level 1000' - 2000' |
| Mt. Hood | Elevation |
|---|---|
| Monday |
Snow Level 4000' - 5000' |
| Tuesday |
Snow Level 3000' - 4000' |
| Wednesday |
Snow Level 1500' - 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.
Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Previous forecast from Feb 18, 2017
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