Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Weather Synopsis for Saturday & Friday
A weakening open trough moved through the area on Friday and Friday night, bringing generally light new 24 hr snowfall accumulations in the form of showers to the west slopes of the Cascades, with the exception of heavier amounts at Mt. Baker (18 inches) and moderate amounts at Paradise and Snoqualmie Pass (8-10 inches). Scattered showers should be lighter during the day on Saturday with only light additional accumulations as weak upper level ridging builds over the area late in the day.
A Pacific frontal system currently well offshore will spread warm frontal precipitation over the Olympics and later the northwest Cascades including Mt. Baker beginning this evening and overnight. The associated upper level trough will dig behind the front, orienting the frontal boundary in a N-S fashion Saturday night. The upshot will be precipitation will be slow to spread to the central and south Cascades Sunday morning. The occluded front will pass through the Cascades mid-afternoon but will weaken as it pushes inland. Locally heavy snowfall amounts are expected for the Mt. Baker area Saturday night through Sunday, with light to moderate amounts expected elsewhere. Moderate to strong crest level winds are expected with this system on Sunday.
Light post-frontal showers should continue Sunday night along with a slight cooling trend.
Weather Forecast
Olympics
| Saturday | Light to occasionally moderate snow showers this morning becoming scattered light showers in the afternoon. |
| Saturday Night | Light rain and snow developing and becoming occasionally moderate after midnight. Slight warming trend. Becoming windy. |
| Sunday | Moderate rain and snow becoming light to moderate showers in the afternoon. Windy. |
| Sunday Night | Light to occasionally moderate snow showers tapering down overnight. |
Washington Cascades near and west of the Crest including Stevens, Snoqualmie and White Passes
| Saturday | Light to occasionally moderate snow showers this morning becoming mostly cloudy with scattered light snow showers in the afternoon. |
| Saturday Night | Light snow increasing to moderate north Cascades after midnight. Periods of light snow elsewhere. |
| Sunday | Moderate to heavy snow Mt. Baker area. Light snow becoming light to occasionally moderate central and south Cascades in the afternoon. Moderate to strong crest level winds. |
| Sunday Night | Light to occasionally moderate snow showers. |
East Slopes of the Washington Cascades
| Saturday | Mostly cloudy with scattered light snow showers. |
| Saturday Night | Partly cloudy central-east and southeast Cascades, mostly cloudy northeast Cascades with isolated light snow showers. |
| Sunday | Light snow developing and becoming light to occasionally moderates in the afternoon. Moderate to strong crest level winds. |
| Sunday Night | Mostly cloudy with scattered light snow showers. |
Mt. Hood
| Saturday | Light to occasionally moderate snow showers this morning becoming mostly cloudy with scattered light snow showers in the afternoon. |
| Saturday Night | Mostly cloudy with light snow showers tapering off overnight. |
| Sunday | Light snow becoming light to occasionally moderate in the afternoon. Moderate to strong crest alpine winds. |
| Sunday Night | Light to occasionally moderate snow showers. |
Issued: 7:28 AM PST Saturday, January 20, 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 | 2000' | 2000' | 1500' | ' | ' | 2000' | ' | 2500' |
| Saturday Afternoon | Snow Level | 3500' | 2000' | 2000' | ' | ' | 2500' | ' | 3000' |
| Saturday Night | Snow Level | 3500' | 2500' | 1500' | ' | ' | 2500' | ' | 3000' |
| Sunday Morning | Snow Level * | 4000' | 3000' | 1500' | ' | ' | 2500' | ' | 3000' |
| Sunday Afternoon | Snow Level * | 3500' | 2500' | 2000' | ' | ' | 2500' | ' | 4000' |
| Sunday Night | Snow Level | 2000' | 2000' | 2000' | ' | ' | 2000' | ' | 2500' |
| Hurricane Ridge | Elevation |
|---|---|
| Saturday Morning |
Snow Level 2000' |
| Saturday Afternoon |
Snow Level 3500' |
| Saturday Night |
Snow Level 3500' |
| Sunday Morning |
Snow Level 4000' (Easterly Flow *) |
| Sunday Afternoon |
Snow Level 3500' (Easterly Flow *) |
| Sunday Night |
Snow Level 2000' |
| Mt. Baker | Elevation |
|---|---|
| Saturday Morning |
Snow Level 2000' |
| Saturday Afternoon |
Snow Level 2000' |
| Saturday Night |
Snow Level 2500' |
| Sunday Morning |
Snow Level 3000' (Easterly Flow *) |
| Sunday Afternoon |
Snow Level 2500' (Easterly Flow *) |
| Sunday Night |
Snow Level 2000' |
| Washington Pass | Elevation |
|---|---|
| Saturday Morning |
Snow Level 1500' |
| Saturday Afternoon |
Snow Level 2000' |
| Saturday Night |
Snow Level 1500' |
| Sunday Morning |
Snow Level 1500' (Easterly Flow *) |
| Sunday Afternoon |
Snow Level 2000' (Easterly Flow *) |
| Sunday Night |
Snow Level 2000' |
| 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 ' |
| 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 ' |
| Snoqualmie Pass | Elevation |
|---|---|
| Saturday Morning |
Snow Level 2000' |
| Saturday Afternoon |
Snow Level 2500' |
| Saturday Night |
Snow Level 2500' |
| Sunday Morning |
Snow Level 2500' (Easterly Flow *) |
| Sunday Afternoon |
Snow Level 2500' (Easterly Flow *) |
| Sunday Night |
Snow Level 2000' |
| 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 ' |
| Mt. Hood | Elevation |
|---|---|
| Saturday Morning |
Snow Level 2500' |
| Saturday Afternoon |
Snow Level 3000' |
| Saturday Night |
Snow Level 3000' |
| Sunday Morning |
Snow Level 3000' (Easterly Flow *) |
| Sunday Afternoon |
Snow Level 4000' (Easterly Flow *) |
| Sunday 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
| Friday | Friday | |
|---|---|---|
| Hurricane Ridge | 0.25 - 0.50 | 0.75 - 1.00 |
| Mt Baker Ski Area | 0 - 1.00 | 1.50 - 2.00 |
| Washington Pass | LT 0.25 | 0.50 - 0.75 |
| Stevens Pass | LT 0.25 | 0 - 0.50 |
| Snoqualmie Pass | 0.25 - 0.50 | 0 - 0.75 |
| Mission Ridge | LT 0.10 | 0.25 - 0.50 |
| Crystal Mt | LT 0.25 | 0 - 0.75 |
| Paradise | 0.50 - 0.75 | 0 - 1.00 |
| White Pass | LT 0.25 | 0.25 - 0.50 |
| Mt Hood Meadows | 0.25 - 0.50 | 0.50 - 0.75 |
| Timberline | 0.25 - 0.50 | 0 - 0.75 |
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: 7:28 AM PST Saturday, January 20, 2018
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Saturday Morning | SW 5 - 15 | SW 10 - 20 | SW 10 - 20 | --- - | WSW 10 - 20 |
| Saturday Afternoon | S 15 - 25 | SE 5 - 15 | SW 5 - 15 | --- - | SW 10 - 20 |
| Saturday Night | S 25 - 35 | S 15 - 25 | SSE 10 - 20 | --- - | SW 15 - 25 |
| Sunday Morning | S 30 - 40 | SE 20 - 30 | ESE 20 - 30 | --- - | S 15 - 25 |
| Sunday Afternoon | SW 15 - 30 | SSW 15 - 25 | SW 15 - 25 | --- - | SW 20 - 30 |
| Sunday Night | SW 10 - 20 | SW 10 - 20 | SW 15 - 25 | --- - | WSW 15 - 25 |
| Hurricane Ridge | Elevation |
|---|---|
| Saturday Morning | SW 5 - 15 |
| Saturday Afternoon | S 15 - 25 |
| Saturday Night | S 25 - 35 |
| Sunday Morning | S 30 - 40 |
| Sunday Afternoon | SW 15 - 30 |
| Sunday Night | SW 10 - 20 |
| Mt. Baker | Elevation |
|---|---|
| Saturday Morning | SW 10 - 20 |
| Saturday Afternoon | SE 5 - 15 |
| Saturday Night | S 15 - 25 |
| Sunday Morning | SE 20 - 30 |
| Sunday Afternoon | SSW 15 - 25 |
| Sunday Night | SW 10 - 20 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Saturday Morning | SW 10 - 20 |
| Saturday Afternoon | SW 5 - 15 |
| Saturday Night | SSE 10 - 20 |
| Sunday Morning | ESE 20 - 30 |
| Sunday Afternoon | SW 15 - 25 |
| Sunday Night | SW 15 - 25 |
| Mt. Rainier | Elevation |
|---|---|
| Saturday Morning | --- - |
| Saturday Afternoon | --- - |
| Saturday Night | --- - |
| Sunday Morning | --- - |
| Sunday Afternoon | --- - |
| Sunday Night | --- - |
| Mt. Hood | Elevation |
|---|---|
| Saturday Morning | WSW 10 - 20 |
| Saturday Afternoon | SW 10 - 20 |
| Saturday Night | SW 15 - 25 |
| Sunday Morning | S 15 - 25 |
| Sunday Afternoon | SW 20 - 30 |
| Sunday Night | WSW 15 - 25 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Saturday Morning | SW 5 - 15 |
| Saturday Afternoon | S 15 - 25 |
| Saturday Night | S 25 - 35 |
| Sunday Morning | S 30 - 40 |
| Sunday Afternoon | SW 15 - 30 |
| Sunday Night | SW 10 - 20 |
| Mt. Baker | Direction - Speed |
|---|---|
| Saturday Morning | SW 10 - 20 |
| Saturday Afternoon | SE 5 - 15 |
| Saturday Night | S 15 - 25 |
| Sunday Morning | SE 20 - 30 |
| Sunday Afternoon | SSW 15 - 25 |
| Sunday Night | SW 10 - 20 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Saturday Morning | SW 10 - 20 |
| Saturday Afternoon | SW 5 - 15 |
| Saturday Night | SSE 10 - 20 |
| Sunday Morning | ESE 20 - 30 |
| Sunday Afternoon | SW 15 - 25 |
| Sunday Night | SW 15 - 25 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Saturday Morning | --- - |
| Saturday Afternoon | --- - |
| Saturday Night | --- - |
| Sunday Morning | --- - |
| Sunday Afternoon | --- - |
| Sunday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Saturday Morning | WSW 10 - 20 |
| Saturday Afternoon | SW 10 - 20 |
| Saturday Night | SW 15 - 25 |
| Sunday Morning | S 15 - 25 |
| Sunday Afternoon | SW 20 - 30 |
| Sunday 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 | |
|---|---|---|---|---|---|
| Saturday Morning | SW 15 - 25 | SW 15 - 25 | SW 20 - 30 | --- - | WSW 25 - 35 |
| Saturday Afternoon | SW 15 - 25 | W 15 - 25 | SW 20 - 30 | --- - | W 20 - 30 |
| Saturday Night | SSW 30 - 40 | SW 20 - 30 | SW 25 - 35 | --- - | SW 20 - 30 |
| Sunday Morning | S 50 - 65 | S 25 - 35 | SSW 40 - 50 | --- - | SW 40 - 50 |
| Sunday Afternoon | SW 40 - 50 | SW 25 - 35 | SW 45 - 55 | --- - | SW 50 - 60 |
| Sunday Night | SW 25 - 35 | SW 30 - 40 | SW 30 - 40 | --- - | SW 30 - 40 |
| Mt. Baker | Direction - Speed |
|---|---|
| Saturday Morning | SW 15 - 25 |
| Saturday Afternoon | SW 15 - 25 |
| Saturday Night | SSW 30 - 40 |
| Sunday Morning | S 50 - 65 |
| Sunday Afternoon | SW 40 - 50 |
| Sunday Night | SW 25 - 35 |
| Washington Pass | Direction - Speed |
|---|---|
| Saturday Morning | SW 15 - 25 |
| Saturday Afternoon | W 15 - 25 |
| Saturday Night | SW 20 - 30 |
| Sunday Morning | S 25 - 35 |
| Sunday Afternoon | SW 25 - 35 |
| Sunday Night | SW 30 - 40 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Saturday Morning | SW 20 - 30 |
| Saturday Afternoon | SW 20 - 30 |
| Saturday Night | SW 25 - 35 |
| Sunday Morning | SSW 40 - 50 |
| Sunday Afternoon | SW 45 - 55 |
| Sunday Night | SW 30 - 40 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Saturday Morning | --- - |
| Saturday Afternoon | --- - |
| Saturday Night | --- - |
| Sunday Morning | --- - |
| Sunday Afternoon | --- - |
| Sunday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Saturday Morning | WSW 25 - 35 |
| Saturday Afternoon | W 20 - 30 |
| Saturday Night | SW 20 - 30 |
| Sunday Morning | SW 40 - 50 |
| Sunday Afternoon | SW 50 - 60 |
| Sunday Night | SW 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.
Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Previous forecast from Jan 17, 2018
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