Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Weather Synopsis for Tuesday & Wednesday
A broad upper trough over much of Canada has pushed south over the Pacific Northwest by Tuesday morning bringing much cooler and more seasonal temperatures.
A cool and slightly unstable air mass is bringing intermittent snow showers to the Olympics and Cascades on a moderate W-SW flow with some slight "snow shadowing" from the Olympic mountains likely reducing snow shower activity in the central Cascades on Tuesday morning. The forecast region will continue to see snow shower activity at low snow levels for the duration of Tuesday through Wednesday night with a very gradual decrease in the shower activity with time as the westerly flow begins to weaken and warmer air aloft begins working into the region making the air mass more stable as a ridge starts building offshore.
On Tuesday, snow showers will be generally light with shorter bursts of moderate intensity, but some heavier bands are possible, particularly in convergence near Mt. Baker on Tuesday evening. The Tuesday through Tuesday night time frame will generally bring 6-12" snow totals at the Cascade passes with Paradise and Mt. Baker getting closer to 12" and Crystal and Washington Pass picking up 6" or less.
Snowfall totals Wednesday through Wednesday are expected to be slightly lower with less than 6" at most sites, except in the central Cascades where 6-8" are likely at Snoqualmie and Stevens passes.
Weather Forecast
Olympics
| Tuesday | Light to moderate snow showers, with decreasing intensity in the afternoon. |
| Tuesday Night | Light snow showers. |
| Wednesday | Decreasing light snow showers. |
| Wednesday Night | Light snow showers becoming more steady very light snow. |
Washington Cascades near and west of the Crest including Stevens, Snoqualmie and White Passes
| Tuesday | Light to moderate snow showers with generally higher intensities near Paradise and Mt. Baker. |
| Tuesday Night | Generally light snow showers with higher intensities likely in convergence near Mt. Baker during the evening hours. |
| Wednesday | Decreasing light snow showers. |
| Wednesday Night | Light snow showers becoming more steady very light snow. |
East Slopes of the Washington Cascades
| Tuesday | Generally light snow showers. |
| Tuesday Night | Generally light snow showers. |
| Wednesday | Decreasing light snow showers. |
| Wednesday Night | Light snow showers becoming more steady very light snow. |
Mt. Hood
| Tuesday | Light snow showers with occasional moderate bands. |
| Tuesday Night | Light snow showers. |
| Wednesday | Decreasing light snow showers. |
| Wednesday Night | Light snow showers becoming more steady very light snow. |
Issued: 7:19 AM PST Tuesday, January 30, 2018
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Tuesday Morning | Snow Level | 2000' | 1500' | 2000' | ' | ' | 2000' | ' | 2500' |
| Tuesday Afternoon | Snow Level | 2000' | 2000' | 2000' | ' | ' | 2000' | ' | 3000' |
| Tuesday Night | Snow Level | 1500' | 1000' | 1000' | ' | ' | 1000' | ' | 2000' |
| Wednesday Morning | Snow Level | 1500' | 1500' | 1000' | ' | ' | 2000' | ' | 2500' |
| Wednesday Afternoon | Snow Level | 1500' | 2000' | 1500' | ' | ' | 2500' | ' | 3000' |
| Wednesday Night | Snow Level | 3000' | 2000' | 1500' | ' | ' | 2500' | ' | 3000' |
| Hurricane Ridge | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 2000' |
| Tuesday Afternoon |
Snow Level 2000' |
| Tuesday Night |
Snow Level 1500' |
| Wednesday Morning |
Snow Level 1500' |
| Wednesday Afternoon |
Snow Level 1500' |
| Wednesday Night |
Snow Level 3000' |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 1500' |
| Tuesday Afternoon |
Snow Level 2000' |
| Tuesday Night |
Snow Level 1000' |
| Wednesday Morning |
Snow Level 1500' |
| Wednesday Afternoon |
Snow Level 2000' |
| Wednesday Night |
Snow Level 2000' |
| Washington Pass | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 2000' |
| Tuesday Afternoon |
Snow Level 2000' |
| Tuesday Night |
Snow Level 1000' |
| Wednesday Morning |
Snow Level 1000' |
| Wednesday Afternoon |
Snow Level 1500' |
| Wednesday Night |
Snow Level 1500' |
| Leavenworth | Elevation |
|---|---|
| Tuesday Morning |
Snow Level ' |
| Tuesday Afternoon |
Snow Level ' |
| Tuesday Night |
Snow Level ' |
| Wednesday Morning |
Snow Level ' |
| Wednesday Afternoon |
Snow Level ' |
| Wednesday Night |
Snow Level ' |
| Stevens Pass | Elevation |
|---|---|
| Tuesday Morning |
Snow Level ' |
| Tuesday Afternoon |
Snow Level ' |
| Tuesday Night |
Snow Level ' |
| Wednesday Morning |
Snow Level ' |
| Wednesday Afternoon |
Snow Level ' |
| Wednesday Night |
Snow Level ' |
| Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 2000' |
| Tuesday Afternoon |
Snow Level 2000' |
| Tuesday Night |
Snow Level 1000' |
| Wednesday Morning |
Snow Level 2000' |
| Wednesday Afternoon |
Snow Level 2500' |
| Wednesday Night |
Snow Level 2500' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Tuesday Morning |
Snow Level ' |
| Tuesday Afternoon |
Snow Level ' |
| Tuesday Night |
Snow Level ' |
| Wednesday Morning |
Snow Level ' |
| Wednesday Afternoon |
Snow Level ' |
| Wednesday Night |
Snow Level ' |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 2500' |
| Tuesday Afternoon |
Snow Level 3000' |
| Tuesday Night |
Snow Level 2000' |
| Wednesday Morning |
Snow Level 2500' |
| Wednesday Afternoon |
Snow Level 3000' |
| Wednesday Night |
Snow Level 3000' |
* 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
| Wednesday | Wednesday | |
|---|---|---|
| Hurricane Ridge | 0.50 - 0.70 | LT 0.25 |
| Mt Baker Ski Area | 0.75 - 1.00 | LT 0.25 |
| Washington Pass | 0 - 0.50 | LT 0.25 |
| Stevens Pass | 0 - 0.75 | 0.50 - 0.75 |
| Snoqualmie Pass | 0 - 0.75 | 0.50 - 0.75 |
| Mission Ridge | LT 0.10 | LT 0.10 |
| Crystal Mt | 0.25 - 0.50 | LT 0.25 |
| Paradise | 0.75 - 1.00 | 0 - 0.50 |
| White Pass | 0 - 0.75 | LT 0.25 |
| Mt Hood Meadows | 0.25 - 0.50 | LT 0.25 |
| Timberline | 0 - 0.50 | 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: 7:19 AM PST Tuesday, January 30, 2018
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Tuesday Morning | WSW 15 - 25 | WSW 20 - 30 | WSW 20 - 30 | --- - | WSW 25 - 35 |
| Tuesday Afternoon | WSW 15 - 25 | WSW 15 - 25 | WSW 25 - 35 | --- - | WSW 20 - 30 |
| Tuesday Night | WSW 15 - 25 | WSW 10 - 20 | WSW 20 - 30 | --- - | WSW 20 - 30 |
| Wednesday Morning | WSW 10 - 20 | WSW 5 - 15 | WSW 10 - 20 | --- - | WSW 10 - 20 |
| Wednesday Afternoon | SW 15 - 25 | SW 5 - 15 | WSW 20 - 30 | --- - | WSW 10 - 20 |
| Wednesday Night | WSW 10 - 20 | WSW 10 - 20 | WSW 5 - 15 | --- - | WSW 5 - 15 |
| Hurricane Ridge | Elevation |
|---|---|
| Tuesday Morning | WSW 15 - 25 |
| Tuesday Afternoon | WSW 15 - 25 |
| Tuesday Night | WSW 15 - 25 |
| Wednesday Morning | WSW 10 - 20 |
| Wednesday Afternoon | SW 15 - 25 |
| Wednesday Night | WSW 10 - 20 |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Morning | WSW 20 - 30 |
| Tuesday Afternoon | WSW 15 - 25 |
| Tuesday Night | WSW 10 - 20 |
| Wednesday Morning | WSW 5 - 15 |
| Wednesday Afternoon | SW 5 - 15 |
| Wednesday Night | WSW 10 - 20 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Morning | WSW 20 - 30 |
| Tuesday Afternoon | WSW 25 - 35 |
| Tuesday Night | WSW 20 - 30 |
| Wednesday Morning | WSW 10 - 20 |
| Wednesday Afternoon | WSW 20 - 30 |
| Wednesday Night | WSW 5 - 15 |
| Mt. Rainier | Elevation |
|---|---|
| Tuesday Morning | --- - |
| Tuesday Afternoon | --- - |
| Tuesday Night | --- - |
| Wednesday Morning | --- - |
| Wednesday Afternoon | --- - |
| Wednesday Night | --- - |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Morning | WSW 25 - 35 |
| Tuesday Afternoon | WSW 20 - 30 |
| Tuesday Night | WSW 20 - 30 |
| Wednesday Morning | WSW 10 - 20 |
| Wednesday Afternoon | WSW 10 - 20 |
| Wednesday Night | WSW 5 - 15 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Tuesday Morning | WSW 15 - 25 |
| Tuesday Afternoon | WSW 15 - 25 |
| Tuesday Night | WSW 15 - 25 |
| Wednesday Morning | WSW 10 - 20 |
| Wednesday Afternoon | SW 15 - 25 |
| Wednesday Night | WSW 10 - 20 |
| Mt. Baker | Direction - Speed |
|---|---|
| Tuesday Morning | WSW 20 - 30 |
| Tuesday Afternoon | WSW 15 - 25 |
| Tuesday Night | WSW 10 - 20 |
| Wednesday Morning | WSW 5 - 15 |
| Wednesday Afternoon | SW 5 - 15 |
| Wednesday Night | WSW 10 - 20 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Tuesday Morning | WSW 20 - 30 |
| Tuesday Afternoon | WSW 25 - 35 |
| Tuesday Night | WSW 20 - 30 |
| Wednesday Morning | WSW 10 - 20 |
| Wednesday Afternoon | WSW 20 - 30 |
| Wednesday Night | WSW 5 - 15 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Tuesday Morning | --- - |
| Tuesday Afternoon | --- - |
| Tuesday Night | --- - |
| Wednesday Morning | --- - |
| Wednesday Afternoon | --- - |
| Wednesday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Tuesday Morning | WSW 25 - 35 |
| Tuesday Afternoon | WSW 20 - 30 |
| Tuesday Night | WSW 20 - 30 |
| Wednesday Morning | WSW 10 - 20 |
| Wednesday Afternoon | WSW 10 - 20 |
| Wednesday Night | WSW 5 - 15 |
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 | WSW 35 - 50 | WSW 40 - 60 | WSW 40 - 60 | --- - | WSW 40 - 60 |
| Tuesday Afternoon | WSW 30 - 40 | WSW 35 - 50 | WSW 40 - 60 | --- - | WSW 35 - 50 |
| Tuesday Night | WSW 25 - 35 | WSW 25 - 35 | W 35 - 50 | --- - | W 35 - 50 |
| Wednesday Morning | W 20 - 30 | W 20 - 30 | W 20 - 30 | --- - | W 30 - 40 |
| Wednesday Afternoon | WSW 25 - 35 | WSW 20 - 30 | WSW 25 - 35 | --- - | WSW 35 - 50 |
| Wednesday Night | WSW 20 - 30 | WSW 25 - 35 | WSW 25 - 35 | --- - | WSW 20 - 30 |
| Mt. Baker | Direction - Speed |
|---|---|
| Tuesday Morning | WSW 35 - 50 |
| Tuesday Afternoon | WSW 30 - 40 |
| Tuesday Night | WSW 25 - 35 |
| Wednesday Morning | W 20 - 30 |
| Wednesday Afternoon | WSW 25 - 35 |
| Wednesday Night | WSW 20 - 30 |
| Washington Pass | Direction - Speed |
|---|---|
| Tuesday Morning | WSW 40 - 60 |
| Tuesday Afternoon | WSW 35 - 50 |
| Tuesday Night | WSW 25 - 35 |
| Wednesday Morning | W 20 - 30 |
| Wednesday Afternoon | WSW 20 - 30 |
| Wednesday Night | WSW 25 - 35 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Tuesday Morning | WSW 40 - 60 |
| Tuesday Afternoon | WSW 40 - 60 |
| Tuesday Night | W 35 - 50 |
| Wednesday Morning | W 20 - 30 |
| Wednesday Afternoon | WSW 25 - 35 |
| Wednesday Night | WSW 25 - 35 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Tuesday Morning | --- - |
| Tuesday Afternoon | --- - |
| Tuesday Night | --- - |
| Wednesday Morning | --- - |
| Wednesday Afternoon | --- - |
| Wednesday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Tuesday Morning | WSW 40 - 60 |
| Tuesday Afternoon | WSW 35 - 50 |
| Tuesday Night | W 35 - 50 |
| Wednesday Morning | W 30 - 40 |
| Wednesday Afternoon | WSW 35 - 50 |
| Wednesday Night | WSW 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 29, 2018
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