Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Weather Synopsis for Saturday & Thursday
An elongated open trough extends southward to the northern California coastal waters. The trough rotates approaches the Pacific Northwest on Saturday. Most areas will experience mostly cloudy and mild day conditions with the precipitation mostly offshore until moisture begins arriving late in the day from the south.
Light precipitation and moderate E winds will increase this evening ahead of the surface trough as it swings across the region overnight from the SW to NE. Behind the surface trough, a shot of moderate snow will move through the region, accompanied by strong W-SW wind and rapid cooling. Snoqualmie Pass is likely to experience light snow in the evening hours cooled by E flow, with a brief mix or changeover to rain in the early morning hours as pass-level flow switches westerly. Precipitation will switch back to all snow by around 4 AM as the cold air quickly moves in.
Light to snow showers and moderate convergence zone bands will remain over the region on Sunday with the cool upper trough over the region. There is a chance for mild convection.
Mt. Hood and Paradise can expect close to a foot of new snowfall by the end of the day on Sunday, while other areas should expect 2-6".
Sunday night, the trough shifts eastward with decreasing light snow showers on W-NW flow
Monday will bring a drying trend as a shortwave ridge builds late in the day.
Weather Forecast
Hurricane Ridge
| Saturday | Cloudy with isolated snow showers in the morning. Light snow arriving in the afternoon. Light winds. |
Mt. Baker
| Saturday | Patchy low clouds with high cloud cover throughout the day, lowering and thickening. Light winds. |
Washington Pass and Leavenworth
| Saturday | Mostly cloudy with high cloud cover, lowering in the afternoon. Light to moderate east wind. |
Stevens and Snoqualmie Pass
| Saturday | Mostly cloudy with high cloud cover, lowering and thickening in the afternoon. Moderate east wind peaking mid-morning. |
Mt. Rainier, Crystal and White Pass
| Saturday | Mostly cloudy with high cloud cover, lowering and thickening in the afternoon. Light snow developing late in the day. Light to moderate east wind. |
Mt. Hood
| Saturday | Mostly cloudy with high cloud cover, lowering and thickening in the afternoon. Light snow developing late in the day. Moderate east wind. |
Issued: 7:10 AM PST Saturday, January 5, 2019
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 * | 4500' | 3500' | 2500' | 3000' | 3500' | 4500' | 4000' | 4500' |
| Saturday Afternoon | Snow Level * | 4500' | 5000' | 3500' | 3000' | 3500' | 4500' | 5000' | 5500' |
| Saturday Evening | Snow Level * | 4500' | 4500' | 3000' | 2500' | 3000' | 3500' | 4000' | 5000' |
| Saturday Night | Snow Level * | 4000' | 3000' | 2500' | 2500' | 2500' | 3500' | 3500' | 4000' |
| Sunday Morning | Snow Level | 2000' | 2500' | 2500' | 2000' | 2000' | 2000' | 2000' | 2500' |
| Sunday Afternoon | Snow Level | 2000' | 2000' | 2000' | 2500' | 2000' | 2000' | 2000' | 2000' |
| Hurricane Ridge | Elevation |
|---|---|
| Saturday Morning |
Snow Level 4500' (Easterly Flow *) |
| Saturday Afternoon |
Snow Level 4500' (Easterly Flow *) |
| Saturday Evening |
Snow Level 4500' (Easterly Flow *) |
| Saturday Night |
Snow Level 4000' (Easterly Flow *) |
| Sunday Morning |
Snow Level 2000' |
| Sunday Afternoon |
Snow Level 2000' |
| Mt. Baker | Elevation |
|---|---|
| Saturday Morning |
Snow Level 3500' (Easterly Flow *) |
| Saturday Afternoon |
Snow Level 5000' (Easterly Flow *) |
| Saturday Evening |
Snow Level 4500' (Easterly Flow *) |
| Saturday Night |
Snow Level 3000' (Easterly Flow *) |
| Sunday Morning |
Snow Level 2500' |
| Sunday Afternoon |
Snow Level 2000' |
| Washington Pass | Elevation |
|---|---|
| Saturday Morning |
Snow Level 2500' (Easterly Flow *) |
| Saturday Afternoon |
Snow Level 3500' (Easterly Flow *) |
| Saturday Evening |
Snow Level 3000' (Easterly Flow *) |
| Saturday Night |
Snow Level 2500' (Easterly Flow *) |
| Sunday Morning |
Snow Level 2500' |
| Sunday Afternoon |
Snow Level 2000' |
| Leavenworth | Elevation |
|---|---|
| Saturday Morning |
Snow Level 3000' (Easterly Flow *) |
| Saturday Afternoon |
Snow Level 3000' (Easterly Flow *) |
| Saturday Evening |
Snow Level 2500' (Easterly Flow *) |
| Saturday Night |
Snow Level 2500' (Easterly Flow *) |
| Sunday Morning |
Snow Level 2000' |
| Sunday Afternoon |
Snow Level 2500' |
| Stevens Pass | Elevation |
|---|---|
| Saturday Morning |
Snow Level 3500' (Easterly Flow *) |
| Saturday Afternoon |
Snow Level 3500' (Easterly Flow *) |
| Saturday Evening |
Snow Level 3000' (Easterly Flow *) |
| Saturday Night |
Snow Level 2500' (Easterly Flow *) |
| Sunday Morning |
Snow Level 2000' |
| Sunday Afternoon |
Snow Level 2000' |
| Snoqualmie Pass | Elevation |
|---|---|
| Saturday Morning |
Snow Level 4500' (Easterly Flow *) |
| Saturday Afternoon |
Snow Level 4500' (Easterly Flow *) |
| Saturday Evening |
Snow Level 3500' (Easterly Flow *) |
| Saturday Night |
Snow Level 3500' (Easterly Flow *) |
| Sunday Morning |
Snow Level 2000' |
| Sunday Afternoon |
Snow Level 2000' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Saturday Morning |
Snow Level 4000' (Easterly Flow *) |
| Saturday Afternoon |
Snow Level 5000' (Easterly Flow *) |
| Saturday Evening |
Snow Level 4000' (Easterly Flow *) |
| Saturday Night |
Snow Level 3500' (Easterly Flow *) |
| Sunday Morning |
Snow Level 2000' |
| Sunday Afternoon |
Snow Level 2000' |
| Mt. Hood | Elevation |
|---|---|
| Saturday Morning |
Snow Level 4500' (Easterly Flow *) |
| Saturday Afternoon |
Snow Level 5500' (Easterly Flow *) |
| Saturday Evening |
Snow Level 5000' (Easterly Flow *) |
| Saturday Night |
Snow Level 4000' (Easterly Flow *) |
| Sunday Morning |
Snow Level 2500' |
| Sunday Afternoon |
Snow Level 2000' |
* 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 Night | Thursday | |
|---|---|---|---|
| 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | LT 0.10 | 0.25 - 0.50 | 0.25 |
| Mt Baker Ski Area | 0 | 0.75 | 0.75 |
| Washington Pass | 0 | 0.25 | LT 0.25 |
| Leavenworth | 0 | LT 0.25 | LT 0.10 |
| Stevens Pass | 0 | 0.25 | 0.25 |
| Snoqualmie Pass | 0 | 0.25 | 0.25 |
| Mission Ridge | 0 | 0.25 | LT 0.10 |
| Crystal Mt | LT 0.10 | 0.50 | LT 0.10 |
| Paradise | LT 0.10 | 0.75 | 0.25 |
| White Pass | LT 0.10 | 0.25 - 0.50 | 0.25 |
| Mt Hood Meadows | LT 0.10 | 0.75 | 0.50 |
| Timberline | LT 0.10 | 0.75 | 0.50 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Saturday | LT 0.10 |
| Saturday Night | 0.25 - 0.50 |
| Thursday | 0.25 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Saturday | 0 |
| Saturday Night | 0.75 |
| Thursday | 0.75 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Saturday | 0 |
| Saturday Night | 0.25 |
| Thursday | LT 0.25 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Saturday | 0 |
| Saturday Night | LT 0.25 |
| Thursday | LT 0.10 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Saturday | 0 |
| Saturday Night | 0.25 |
| Thursday | 0.25 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Saturday | 0 |
| Saturday Night | 0.25 |
| Thursday | 0.25 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Saturday | 0 |
| Saturday Night | 0.25 |
| Thursday | LT 0.10 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Saturday | LT 0.10 |
| Saturday Night | 0.50 |
| Thursday | LT 0.10 |
| Paradise | Precipitation Forecast |
|---|---|
| Saturday | LT 0.10 |
| Saturday Night | 0.75 |
| Thursday | 0.25 |
| White Pass | Precipitation Forecast |
|---|---|
| Saturday | LT 0.10 |
| Saturday Night | 0.25 - 0.50 |
| Thursday | 0.25 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Saturday | LT 0.10 |
| Saturday Night | 0.75 |
| Thursday | 0.50 |
| Timberline | Precipitation Forecast |
|---|---|
| Saturday | LT 0.10 |
| Saturday Night | 0.75 |
| Thursday | 0.50 |
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: 7:10 AM PST Saturday, January 5, 2019
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Saturday Morning | SSE 5 - 15 | ESE 5 - 15 | ESE 5 - 15 | ESE 5 - 15 | ESE 15 - 25 |
| Saturday Afternoon | SE 25 - 35 | E 10 - 20 | E 10 - 20 | ENE 10 - 20 | ESE 15 - 25 |
| Saturday Evening | SSE 25 - 35 | ESE 10 - 20 | E 20 - 30 | ESE 20 - 30 | SE 25 - 35 |
| Saturday Night | WSW 35 - 50 | S 20 - 30 | WSW 35 - 50 | WSW 30 - 45 | WSW 40 - 60 |
| Sunday Morning | SW 20 - 30 | SW 20 - 30 | SW 15 - 25 | SW 10 - 20 | SSW 15 - 25 |
| Sunday Afternoon | SW 15 - 25 | S 10 - 20 | VAR 0 - 10 | VAR 0 - 10 | SW 15 - 25 |
| Hurricane Ridge | Elevation |
|---|---|
| Saturday Morning | SSE 5 - 15 |
| Saturday Afternoon | SE 25 - 35 |
| Saturday Evening | SSE 25 - 35 |
| Saturday Night | WSW 35 - 50 |
| Sunday Morning | SW 20 - 30 |
| Sunday Afternoon | SW 15 - 25 |
| Mt. Baker | Elevation |
|---|---|
| Saturday Morning | ESE 5 - 15 |
| Saturday Afternoon | E 10 - 20 |
| Saturday Evening | ESE 10 - 20 |
| Saturday Night | S 20 - 30 |
| Sunday Morning | SW 20 - 30 |
| Sunday Afternoon | S 10 - 20 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Saturday Morning | ESE 5 - 15 |
| Saturday Afternoon | E 10 - 20 |
| Saturday Evening | E 20 - 30 |
| Saturday Night | WSW 35 - 50 |
| Sunday Morning | SW 15 - 25 |
| Sunday Afternoon | VAR 0 - 10 |
| Mt. Rainier | Elevation |
|---|---|
| Saturday Morning | ESE 5 - 15 |
| Saturday Afternoon | ENE 10 - 20 |
| Saturday Evening | ESE 20 - 30 |
| Saturday Night | WSW 30 - 45 |
| Sunday Morning | SW 10 - 20 |
| Sunday Afternoon | VAR 0 - 10 |
| Mt. Hood | Elevation |
|---|---|
| Saturday Morning | ESE 15 - 25 |
| Saturday Afternoon | ESE 15 - 25 |
| Saturday Evening | SE 25 - 35 |
| Saturday Night | WSW 40 - 60 |
| Sunday Morning | SSW 15 - 25 |
| Sunday Afternoon | SW 15 - 25 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Saturday Morning | SSE 5 - 15 |
| Saturday Afternoon | SE 25 - 35 |
| Saturday Evening | SSE 25 - 35 |
| Saturday Night | WSW 35 - 50 |
| Sunday Morning | SW 20 - 30 |
| Sunday Afternoon | SW 15 - 25 |
| Mt. Baker | Direction - Speed |
|---|---|
| Saturday Morning | ESE 5 - 15 |
| Saturday Afternoon | E 10 - 20 |
| Saturday Evening | ESE 10 - 20 |
| Saturday Night | S 20 - 30 |
| Sunday Morning | SW 20 - 30 |
| Sunday Afternoon | S 10 - 20 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Saturday Morning | ESE 5 - 15 |
| Saturday Afternoon | E 10 - 20 |
| Saturday Evening | E 20 - 30 |
| Saturday Night | WSW 35 - 50 |
| Sunday Morning | SW 15 - 25 |
| Sunday Afternoon | VAR 0 - 10 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Saturday Morning | ESE 5 - 15 |
| Saturday Afternoon | ENE 10 - 20 |
| Saturday Evening | ESE 20 - 30 |
| Saturday Night | WSW 30 - 45 |
| Sunday Morning | SW 10 - 20 |
| Sunday Afternoon | VAR 0 - 10 |
| Mt. Hood | Direction - Speed |
|---|---|
| Saturday Morning | ESE 15 - 25 |
| Saturday Afternoon | ESE 15 - 25 |
| Saturday Evening | SE 25 - 35 |
| Saturday Night | WSW 40 - 60 |
| Sunday Morning | SSW 15 - 25 |
| Sunday Afternoon | SW 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 | SSE 25 - 35 | SSE 30 - 45 | S 30 - 45 | SSE 30 - 45 | S 25 - 35 |
| Saturday Afternoon | SSE 25 - 35 | SSE 30 - 45 | S 25 - 35 | SSW 30 - 45 | SSW 40 - 60 |
| Saturday Evening | S 25 - 35 | SSE 25 - 35 | S 30 - 45 | S 40 - 60 | SSW 55 - 75 |
| Saturday Night | SSW 35 - 50 | SSW 25 - 35 | SW 45 - 65 | WSW 45 - 65 | WSW 40 - 60 |
| Sunday Morning | SW 35 - 50 | SW 35 - 50 | WSW 30 - 45 | WSW 25 - 35 | SW 25 - 35 |
| Sunday Afternoon | SW 20 - 30 | SW 15 - 25 | WSW 15 - 25 | WSW 5 - 15 | SW 20 - 30 |
| Mt. Baker | Direction - Speed |
|---|---|
| Saturday Morning | SSE 25 - 35 |
| Saturday Afternoon | SSE 25 - 35 |
| Saturday Evening | S 25 - 35 |
| Saturday Night | SSW 35 - 50 |
| Sunday Morning | SW 35 - 50 |
| Sunday Afternoon | SW 20 - 30 |
| Washington Pass | Direction - Speed |
|---|---|
| Saturday Morning | SSE 30 - 45 |
| Saturday Afternoon | SSE 30 - 45 |
| Saturday Evening | SSE 25 - 35 |
| Saturday Night | SSW 25 - 35 |
| Sunday Morning | SW 35 - 50 |
| Sunday Afternoon | SW 15 - 25 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Saturday Morning | S 30 - 45 |
| Saturday Afternoon | S 25 - 35 |
| Saturday Evening | S 30 - 45 |
| Saturday Night | SW 45 - 65 |
| Sunday Morning | WSW 30 - 45 |
| Sunday Afternoon | WSW 15 - 25 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Saturday Morning | SSE 30 - 45 |
| Saturday Afternoon | SSW 30 - 45 |
| Saturday Evening | S 40 - 60 |
| Saturday Night | WSW 45 - 65 |
| Sunday Morning | WSW 25 - 35 |
| Sunday Afternoon | WSW 5 - 15 |
| Mt. Hood | Direction - Speed |
|---|---|
| Saturday Morning | S 25 - 35 |
| Saturday Afternoon | SSW 40 - 60 |
| Saturday Evening | SSW 55 - 75 |
| Saturday Night | WSW 40 - 60 |
| Sunday Morning | SW 25 - 35 |
| Sunday Afternoon | 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 5, 2019
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