Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Weather Synopsis for Saturday & Saturday
Recent freezing rain seen in the Passes is done this morning as cooler air and westerly onshore flow briefly mixes into the region. A slow decline in snow levels on Saturday should pair with decreasing post-frontal showers seen mainly along the west slopes of the Cascades. A weak convergence zone may locally spit out a few inches of snow through early Saturday afternoon.
The next low pressure system will track toward the central British Columbia coast tonight, spreading light rain and snow over the Olympics and north Cascades in the early morning hours of Sunday with westerly flow aloft. Light precipitation will spread south over the Washington Cascades during the day on Sunday but largely miss Mt. Hood. As a secondary shortwave digs southward from the parent NE Pacific upper level trough later Sunday, this should orient the frontal system more SW-NE Sunday afternoon and night and lead to a gradual warming trend over the region.
Offshore gradients are not as strong as Friday's system, but could still cause a mix of precipitation types at Snoqualmie and eventually Stevens Pass Sunday afternoon and night. Locally heavier precipitation should stay mainly as snow for Mt. Baker during the daylight hours Sunday before a likely switch to rain Sunday night.
Weather Forecast
Olympics
| Saturday | Cloudy with scattered light rain and snow showers this morning decreasing in the afternoon. |
| Saturday Night | Cloudy with isolated light rain and snow showers in the evening then light rain and snow developing late tonight. |
| Sunday | Light rain and snow becoming light to occasionally moderate rain and snow mid-day. Warming trend. |
| Sunday Night | Light to occasionally moderate rain and snow. |
Washington Cascades near and west of the Crest including Stevens, Snoqualmie and White Passes
| Saturday | Cloudy with scattered light rain and snow showers this morning decreasing in the afternoon. |
| Saturday Night | Cloudy with isolated light rain and snow showers. |
| Sunday | Light rain and snow north Cascades spreading to the central and south Cascades in the morning. Becoming light to moderate rain and snow north of Stevens Pass mid-day through the afternoon. Light freezing rain possible Snoqulamie Pass in the afternoon. Slow warming trend. |
| Sunday Night | Light to occasionally moderate rain and snow. Light freezing rain possible Stevens and Snoqualmie Passes. Slow warming trend. |
East Slopes of the Washington Cascades
| Saturday | Cloudy with isolated light rain and snow showers near the crest this morning ending mid-day. |
| Saturday Night | Cloudy. |
| Sunday | Light rain and snow northeast Cascades spreading to the central-east and southeast Cascades in the morning. Slow warming trend. |
| Sunday Night | Light rain, snow or freezing rain. |
Mt. Hood
| Saturday | Cloudy with isolated light rain and snow showers this morning ending in the afternoon. |
| Saturday Night | Cloudy. |
| Sunday | Cloudy with periods of very light rain or snow. |
| Sunday Night | Light rain and snow. |
Issued: 7:39 AM PST Saturday, January 6, 2018
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Saturday Morning | Snow Level | 4000' | 4000' | 4500' | ' | ' | 3500' | ' | 4000' |
| Saturday Afternoon | Snow Level | 3000' | 3000' | 3500' | ' | ' | 3000' | ' | 3000' |
| Saturday Night | Snow Level | 2500' | 2500' | 2000' | ' | ' | 2500' | ' | 3000' |
| Sunday Morning | Snow Level * | 4000' | 2000' | 2000' | ' | ' | 3000' | ' | 4500' |
| Sunday Afternoon | Snow Level * | 6000' | 4000' | 4000' | ' | ' | 4000' | ' | 6000' |
| Sunday Night | Snow Level * | 6000' | 5000' | 4000' | ' | ' | 5500' | ' | 6500' |
| Hurricane Ridge | Elevation |
|---|---|
| Saturday Morning |
Snow Level 4000' |
| Saturday Afternoon |
Snow Level 3000' |
| Saturday Night |
Snow Level 2500' |
| Sunday Morning |
Snow Level 4000' (Easterly Flow *) |
| Sunday Afternoon |
Snow Level 6000' (Easterly Flow *) |
| Sunday Night |
Snow Level 6000' (Easterly Flow *) |
| Mt. Baker | Elevation |
|---|---|
| Saturday Morning |
Snow Level 4000' |
| Saturday Afternoon |
Snow Level 3000' |
| Saturday Night |
Snow Level 2500' |
| Sunday Morning |
Snow Level 2000' (Easterly Flow *) |
| Sunday Afternoon |
Snow Level 4000' (Easterly Flow *) |
| Sunday Night |
Snow Level 5000' (Easterly Flow *) |
| Washington Pass | Elevation |
|---|---|
| Saturday Morning |
Snow Level 4500' |
| Saturday Afternoon |
Snow Level 3500' |
| Saturday Night |
Snow Level 2000' |
| Sunday Morning |
Snow Level 2000' (Easterly Flow *) |
| Sunday Afternoon |
Snow Level 4000' (Easterly Flow *) |
| Sunday Night |
Snow Level 4000' (Easterly Flow *) |
| Leavenworth | Elevation |
|---|---|
| Saturday Morning |
Snow Level ' |
| Saturday Afternoon |
Snow Level ' |
| Saturday Night |
Snow Level ' |
| Sunday Morning |
Snow Level ' (Easterly Flow *) |
| Sunday Afternoon |
Snow Level ' (Easterly Flow *) |
| Sunday Night |
Snow Level ' (Easterly Flow *) |
| Stevens Pass | Elevation |
|---|---|
| Saturday Morning |
Snow Level ' |
| Saturday Afternoon |
Snow Level ' |
| Saturday Night |
Snow Level ' |
| Sunday Morning |
Snow Level ' (Easterly Flow *) |
| Sunday Afternoon |
Snow Level ' (Easterly Flow *) |
| Sunday Night |
Snow Level ' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Saturday Morning |
Snow Level 3500' |
| Saturday Afternoon |
Snow Level 3000' |
| Saturday Night |
Snow Level 2500' |
| Sunday Morning |
Snow Level 3000' (Easterly Flow *) |
| Sunday Afternoon |
Snow Level 4000' (Easterly Flow *) |
| Sunday Night |
Snow Level 5500' (Easterly Flow *) |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Saturday Morning |
Snow Level ' |
| Saturday Afternoon |
Snow Level ' |
| Saturday Night |
Snow Level ' |
| Sunday Morning |
Snow Level ' (Easterly Flow *) |
| Sunday Afternoon |
Snow Level ' (Easterly Flow *) |
| Sunday Night |
Snow Level ' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Saturday Morning |
Snow Level 4000' |
| Saturday Afternoon |
Snow Level 3000' |
| Saturday Night |
Snow Level 3000' |
| Sunday Morning |
Snow Level 4500' (Easterly Flow *) |
| Sunday Afternoon |
Snow Level 6000' (Easterly Flow *) |
| Sunday Night |
Snow Level 6500' (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
| Saturday | Saturday | |
|---|---|---|
| Hurricane Ridge | LT 0.10 | 0 - 0.50 |
| Mt Baker Ski Area | LT 0.25 | 0 - 1.00 |
| Washington Pass | LT 0.10 | 0.25 - 0.50 |
| Stevens Pass | LT 0.25 | 0 - 0.75 |
| Snoqualmie Pass | LT 0.25 | 0 - 0.75 |
| Mission Ridge | LT 0.10 | LT 0.25 |
| Crystal Mt | LT 0.10 | 0.25 - 0.50 |
| Paradise | LT 0.10 | 0 - 1.00 |
| White Pass | LT 0.10 | LT 0.25 |
| Mt Hood Meadows | LT 0.10 | LT 0.25 |
| Timberline | LT 0.10 | 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: 7:39 AM PST Saturday, January 6, 2018
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Saturday Morning | WSW 5 - 15 | SW 10 - 20 | WSW 15 - 25 | --- - | W 15 - 25 |
| Saturday Afternoon | SW 5 - 15 | SW 5 - 15 | WSW 5 - 15 | --- - | W 10 - 20 |
| Saturday Night | S 5 - 15 | S 0 - 10 | WSW 0 - 10 | --- - | W 5 - 15 |
| Sunday Morning | S 15 - 25 | SE 5 - 15 | S 5 - 15 | --- - | SW 5 - 15 |
| Sunday Afternoon | SSW 20 - 30 | SE 10 - 20 | S 10 - 20 | --- - | SW 5 - 15 |
| Sunday Night | SSW 5 - 15 | SE 10 - 20 | S 5 - 15 | --- - | S 0 - 10 |
| Hurricane Ridge | Elevation |
|---|---|
| Saturday Morning | WSW 5 - 15 |
| Saturday Afternoon | SW 5 - 15 |
| Saturday Night | S 5 - 15 |
| Sunday Morning | S 15 - 25 |
| Sunday Afternoon | SSW 20 - 30 |
| Sunday Night | SSW 5 - 15 |
| Mt. Baker | Elevation |
|---|---|
| Saturday Morning | SW 10 - 20 |
| Saturday Afternoon | SW 5 - 15 |
| Saturday Night | S 0 - 10 |
| Sunday Morning | SE 5 - 15 |
| Sunday Afternoon | SE 10 - 20 |
| Sunday Night | SE 10 - 20 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Saturday Morning | WSW 15 - 25 |
| Saturday Afternoon | WSW 5 - 15 |
| Saturday Night | WSW 0 - 10 |
| Sunday Morning | S 5 - 15 |
| Sunday Afternoon | S 10 - 20 |
| Sunday Night | S 5 - 15 |
| Mt. Rainier | Elevation |
|---|---|
| Saturday Morning | --- - |
| Saturday Afternoon | --- - |
| Saturday Night | --- - |
| Sunday Morning | --- - |
| Sunday Afternoon | --- - |
| Sunday Night | --- - |
| Mt. Hood | Elevation |
|---|---|
| Saturday Morning | W 15 - 25 |
| Saturday Afternoon | W 10 - 20 |
| Saturday Night | W 5 - 15 |
| Sunday Morning | SW 5 - 15 |
| Sunday Afternoon | SW 5 - 15 |
| Sunday Night | S 0 - 10 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Saturday Morning | WSW 5 - 15 |
| Saturday Afternoon | SW 5 - 15 |
| Saturday Night | S 5 - 15 |
| Sunday Morning | S 15 - 25 |
| Sunday Afternoon | SSW 20 - 30 |
| Sunday Night | SSW 5 - 15 |
| Mt. Baker | Direction - Speed |
|---|---|
| Saturday Morning | SW 10 - 20 |
| Saturday Afternoon | SW 5 - 15 |
| Saturday Night | S 0 - 10 |
| Sunday Morning | SE 5 - 15 |
| Sunday Afternoon | SE 10 - 20 |
| Sunday Night | SE 10 - 20 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Saturday Morning | WSW 15 - 25 |
| Saturday Afternoon | WSW 5 - 15 |
| Saturday Night | WSW 0 - 10 |
| Sunday Morning | S 5 - 15 |
| Sunday Afternoon | S 10 - 20 |
| Sunday Night | S 5 - 15 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Saturday Morning | --- - |
| Saturday Afternoon | --- - |
| Saturday Night | --- - |
| Sunday Morning | --- - |
| Sunday Afternoon | --- - |
| Sunday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Saturday Morning | W 15 - 25 |
| Saturday Afternoon | W 10 - 20 |
| Saturday Night | W 5 - 15 |
| Sunday Morning | SW 5 - 15 |
| Sunday Afternoon | SW 5 - 15 |
| Sunday Night | S 0 - 10 |
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 Morning | SW 15 - 25 | SW 20 - 30 | SW 20 - 30 | --- - | SW 15 - 25 |
| Saturday Afternoon | W 10 - 20 | WSW 10 - 20 | W 15 - 25 | --- - | WNW 10 - 20 |
| Saturday Night | SW 15 - 25 | W 10 - 20 | W 20 - 30 | --- - | W 15 - 25 |
| Sunday Morning | SW 15 - 25 | SW 15 - 25 | WSW 25 - 35 | --- - | SW 25 - 35 |
| Sunday Afternoon | SW 25 - 35 | SW 25 - 35 | SW 30 - 40 | --- - | WSW 20 - 30 |
| Sunday Night | S 15 - 25 | SSW 15 - 25 | SSW 15 - 25 | --- - | SW 20 - 30 |
| Mt. Baker | Direction - Speed |
|---|---|
| Saturday Morning | SW 15 - 25 |
| Saturday Afternoon | W 10 - 20 |
| Saturday Night | SW 15 - 25 |
| Sunday Morning | SW 15 - 25 |
| Sunday Afternoon | SW 25 - 35 |
| Sunday Night | S 15 - 25 |
| Washington Pass | Direction - Speed |
|---|---|
| Saturday Morning | SW 20 - 30 |
| Saturday Afternoon | WSW 10 - 20 |
| Saturday Night | W 10 - 20 |
| Sunday Morning | SW 15 - 25 |
| Sunday Afternoon | SW 25 - 35 |
| Sunday Night | SSW 15 - 25 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Saturday Morning | SW 20 - 30 |
| Saturday Afternoon | W 15 - 25 |
| Saturday Night | W 20 - 30 |
| Sunday Morning | WSW 25 - 35 |
| Sunday Afternoon | SW 30 - 40 |
| Sunday Night | SSW 15 - 25 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Saturday Morning | --- - |
| Saturday Afternoon | --- - |
| Saturday Night | --- - |
| Sunday Morning | --- - |
| Sunday Afternoon | --- - |
| Sunday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Saturday Morning | SW 15 - 25 |
| Saturday Afternoon | WNW 10 - 20 |
| Saturday Night | W 15 - 25 |
| Sunday Morning | SW 25 - 35 |
| Sunday Afternoon | WSW 20 - 30 |
| Sunday Night | SW 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.
Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Previous forecast from Jan 3, 2018
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