Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Weather Synopsis for Monday & Wednesday
An upper-level shortwave feature is passing over the Pacific Northwest early this morning bringing a period of more intense snow showers at snow levels well below the Cascade passes. Snow showers within this cool, unstable airmass should generally decrease as the upper-level shortwave exits, except in an isolated Vancouver Island convergence zone during the mid-day hours just south of Mt. Baker. A shallow high pressure begins to build during the afternoon and overnight hours bringing generally fair weather.
On Tuesday, a moist bow-shaped front arrives ahead of a low heading north to the Queen Charlotte Islands off the BC coast bringing increasing moderate precipitation and significant warming to the Olympics and Hood regions in the afternoon along with moderate crest-level winds. The front will stall over the forecast region on Tuesday night, with moderate to occasionally heavy precipitation for the Cascades and further warming. Easterly flow should keep Snoqualmie Pass as snow.
Weather Forecast
Olympics
| Monday | Decreasing light snow showers in the morning, becoming mostly cloudy. |
| Monday Night | Mostly cloudy with high clouds lowering and thickening by morning. |
| Tuesday | Increasing light to moderate rain and snow with strong southerly winds in the morning becoming moderate in the afternoon. |
| Tuesday Night | Light rain and snow showers. |
Washington Cascades near and west of the Crest including Stevens, Snoqualmie and White Passes
| Monday | Decreasing light to moderate snow showers in the morning. Isolated light snow showers in the afternoon in convergence, particularly near or just south of Mt. Baker. Otherwise, cloudy. |
| Monday Night | Mostly cloudy with high clouds lowering and thickening by morning. |
| Tuesday | Increasing light becoming moderate snow late in the day in the north with increasing moderate to occasionally heavy rain and snow in the central and south. Increasing moderate crest-level winds. |
| Tuesday Night | Moderate to occasionally heavy rain and snow. Moderate crest-level winds. |
East Slopes of the Washington Cascades
| Monday | Decreasing light scattered showers becoming cloudy near the crest and mostly sunny away from the crest. |
| Monday Night | Mostly cloudy near the crest and mostly clear away from the crest. |
| Tuesday | Increasing light snow in the north with increasing light to moderate snow in the central and south. Increasing moderate crest-level winds. |
| Tuesday Night | Moderate to occasionally heavy rain and snow. Moderate crest-level winds. |
Mt. Hood
| Monday | Decreasing light to moderate showers. Becoming mostly cloudy by late afternoon. |
| Monday Night | Mostly cloudy. |
| Tuesday | Increasing moderate to occasionally heavy rain and snow. Warming. Increasing moderate SSW crest-level winds. |
| Tuesday Night | Moderate to occasionally heavy rain and snow. More warming during the evening hours. Moderate to strong SSW crest-level winds. |
Issued: 7:34 AM PST Monday, January 22, 2018
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Monday Morning | Snow Level | 2000' | 1500' | 0' | ' | ' | 1500' | ' | 3000' |
| Monday Afternoon | Snow Level | 2500' | 2000' | 2000' | ' | ' | 2000' | ' | 3000' |
| Monday Night | Snow Level * | 1500' | 1000' | 0' | ' | ' | 1000' | ' | 2000' |
| Tuesday Morning | Snow Level * | 4000' | 1500' | 1000' | ' | ' | 1500' | ' | 2500' |
| Tuesday Afternoon | Snow Level * | 4000' | 1500' | 1500' | ' | ' | 2000' | ' | 5000' |
| Tuesday Night | Snow Level * | 4500' | 2000' | 1500' | ' | ' | 3500' | ' | 5000' |
| Hurricane Ridge | Elevation |
|---|---|
| Monday Morning |
Snow Level 2000' |
| Monday Afternoon |
Snow Level 2500' |
| Monday Night |
Snow Level 1500' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 4000' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 4000' (Easterly Flow *) |
| Tuesday Night |
Snow Level 4500' (Easterly Flow *) |
| Mt. Baker | Elevation |
|---|---|
| Monday Morning |
Snow Level 1500' |
| Monday Afternoon |
Snow Level 2000' |
| Monday Night |
Snow Level 1000' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 1500' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 1500' (Easterly Flow *) |
| Tuesday Night |
Snow Level 2000' (Easterly Flow *) |
| Washington Pass | Elevation |
|---|---|
| Monday Morning |
Snow Level 0' |
| Monday Afternoon |
Snow Level 2000' |
| Monday Night |
Snow Level 0' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 1000' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 1500' (Easterly Flow *) |
| Tuesday Night |
Snow Level 1500' (Easterly Flow *) |
| Leavenworth | Elevation |
|---|---|
| Monday Morning |
Snow Level ' |
| Monday Afternoon |
Snow Level ' |
| Monday Night |
Snow Level ' (Easterly Flow *) |
| Tuesday Morning |
Snow Level ' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level ' (Easterly Flow *) |
| Tuesday Night |
Snow Level ' (Easterly Flow *) |
| Stevens Pass | Elevation |
|---|---|
| Monday Morning |
Snow Level ' |
| Monday Afternoon |
Snow Level ' |
| Monday Night |
Snow Level ' (Easterly Flow *) |
| Tuesday Morning |
Snow Level ' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level ' (Easterly Flow *) |
| Tuesday Night |
Snow Level ' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Monday Morning |
Snow Level 1500' |
| Monday Afternoon |
Snow Level 2000' |
| Monday Night |
Snow Level 1000' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 1500' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 2000' (Easterly Flow *) |
| Tuesday Night |
Snow Level 3500' (Easterly Flow *) |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Monday Morning |
Snow Level ' |
| Monday Afternoon |
Snow Level ' |
| Monday Night |
Snow Level ' (Easterly Flow *) |
| Tuesday Morning |
Snow Level ' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level ' (Easterly Flow *) |
| Tuesday Night |
Snow Level ' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Monday Morning |
Snow Level 3000' |
| Monday Afternoon |
Snow Level 3000' |
| Monday Night |
Snow Level 2000' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 2500' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 5000' (Easterly Flow *) |
| Tuesday Night |
Snow Level 5000' (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
| Wednesday | Wednesday | |
|---|---|---|
| Hurricane Ridge | LT 0.25 | 0.75 - 1.00 |
| Mt Baker Ski Area | 0.25 - 0.50 | 1.00 - 1.50 |
| Washington Pass | 0.25 - 0.50 | 1.00 - 1.50 |
| Stevens Pass | 0.25 - 0.50 | 1.00 - 1.50 |
| Snoqualmie Pass | 0.25 - 0.50 | 1.50 - 2.00 |
| Mission Ridge | LT 0.10 | 0 - 1.00 |
| Crystal Mt | LT 0.25 | 1.50 - 2.00 |
| Paradise | 0 - 0.50 | 2.00 - 3.00 |
| White Pass | 0.25 - 0.50 | 0 - 1.00 |
| Mt Hood Meadows | 0.25 - 0.50 | 1.00 - 1.50 |
| Timberline | 0.25 - 0.50 | 0 - 1.50 |
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: 7:34 AM PST Monday, January 22, 2018
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Monday Morning | WSW 10 - 20 | SW 15 - 25 | WSW 20 - 30 | --- - | WSW 20 - 30 |
| Monday Afternoon | WSW 5 - 15 | SW 10 - 20 | W 15 - 25 | --- - | WSW 10 - 20 |
| Monday Night | SSE 10 - 20 | SSE 10 - | SSE 5 - 15 | --- - | S 10 - 20 |
| Tuesday Morning | S 35 - 50 | ESE 25 - 35 | ESE 20 - 30 | --- - | S 25 - 35 |
| Tuesday Afternoon | SW 20 - 30 | SSE 15 - 25 | ESE 25 - 35 | --- - | SSW 30 - 40 |
| Tuesday Night | SSW 15 - 25 | SE 15 - 25 | SE 20 - 30 | --- - | SSW 35 - 50 |
| Hurricane Ridge | Elevation |
|---|---|
| Monday Morning | WSW 10 - 20 |
| Monday Afternoon | WSW 5 - 15 |
| Monday Night | SSE 10 - 20 |
| Tuesday Morning | S 35 - 50 |
| Tuesday Afternoon | SW 20 - 30 |
| Tuesday Night | SSW 15 - 25 |
| Mt. Baker | Elevation |
|---|---|
| Monday Morning | SW 15 - 25 |
| Monday Afternoon | SW 10 - 20 |
| Monday Night | SSE 10 - |
| Tuesday Morning | ESE 25 - 35 |
| Tuesday Afternoon | SSE 15 - 25 |
| Tuesday Night | SE 15 - 25 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Monday Morning | WSW 20 - 30 |
| Monday Afternoon | W 15 - 25 |
| Monday Night | SSE 5 - 15 |
| Tuesday Morning | ESE 20 - 30 |
| Tuesday Afternoon | ESE 25 - 35 |
| Tuesday Night | SE 20 - 30 |
| Mt. Rainier | Elevation |
|---|---|
| Monday Morning | --- - |
| Monday Afternoon | --- - |
| Monday Night | --- - |
| Tuesday Morning | --- - |
| Tuesday Afternoon | --- - |
| Tuesday Night | --- - |
| Mt. Hood | Elevation |
|---|---|
| Monday Morning | WSW 20 - 30 |
| Monday Afternoon | WSW 10 - 20 |
| Monday Night | S 10 - 20 |
| Tuesday Morning | S 25 - 35 |
| Tuesday Afternoon | SSW 30 - 40 |
| Tuesday Night | SSW 35 - 50 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Monday Morning | WSW 10 - 20 |
| Monday Afternoon | WSW 5 - 15 |
| Monday Night | SSE 10 - 20 |
| Tuesday Morning | S 35 - 50 |
| Tuesday Afternoon | SW 20 - 30 |
| Tuesday Night | SSW 15 - 25 |
| Mt. Baker | Direction - Speed |
|---|---|
| Monday Morning | SW 15 - 25 |
| Monday Afternoon | SW 10 - 20 |
| Monday Night | SSE 10 - |
| Tuesday Morning | ESE 25 - 35 |
| Tuesday Afternoon | SSE 15 - 25 |
| Tuesday Night | SE 15 - 25 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Monday Morning | WSW 20 - 30 |
| Monday Afternoon | W 15 - 25 |
| Monday Night | SSE 5 - 15 |
| Tuesday Morning | ESE 20 - 30 |
| Tuesday Afternoon | ESE 25 - 35 |
| Tuesday Night | SE 20 - 30 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Monday Morning | --- - |
| Monday Afternoon | --- - |
| Monday Night | --- - |
| Tuesday Morning | --- - |
| Tuesday Afternoon | --- - |
| Tuesday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Monday Morning | WSW 20 - 30 |
| Monday Afternoon | WSW 10 - 20 |
| Monday Night | S 10 - 20 |
| Tuesday Morning | S 25 - 35 |
| Tuesday Afternoon | SSW 30 - 40 |
| Tuesday Night | SSW 35 - 50 |
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 | |
|---|---|---|---|---|---|
| Monday Morning | WSW 30 - 40 | WSW 20 - 30 | W 35 - 50 | --- - | WSW 35 - 50 |
| Monday Afternoon | WSW 20 - 30 | WSW 30 - 40 | WSW 30 - 40 | --- - | W 30 - 40 |
| Monday Night | WSW 20 - 30 | WSW 10 - 20 | WSW 25 - 35 | --- - | SW 20 - 30 |
| Tuesday Morning | SSW 40 - 60 | SSW 30 - 40 | WSW 40 - 60 | --- - | WSW 40 - 60 |
| Tuesday Afternoon | SW 40 - 60 | SW 30 - 40 | WSW 55 - 75 | --- - | WSW 55 - 75 |
| Tuesday Night | SSW 45 - 65 | SSW 20 - 30 | SSW 50 - 70 | --- - | SSW 35 - 50 |
| Mt. Baker | Direction - Speed |
|---|---|
| Monday Morning | WSW 30 - 40 |
| Monday Afternoon | WSW 20 - 30 |
| Monday Night | WSW 20 - 30 |
| Tuesday Morning | SSW 40 - 60 |
| Tuesday Afternoon | SW 40 - 60 |
| Tuesday Night | SSW 45 - 65 |
| Washington Pass | Direction - Speed |
|---|---|
| Monday Morning | WSW 20 - 30 |
| Monday Afternoon | WSW 30 - 40 |
| Monday Night | WSW 10 - 20 |
| Tuesday Morning | SSW 30 - 40 |
| Tuesday Afternoon | SW 30 - 40 |
| Tuesday Night | SSW 20 - 30 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Monday Morning | W 35 - 50 |
| Monday Afternoon | WSW 30 - 40 |
| Monday Night | WSW 25 - 35 |
| Tuesday Morning | WSW 40 - 60 |
| Tuesday Afternoon | WSW 55 - 75 |
| Tuesday Night | SSW 50 - 70 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Monday Morning | --- - |
| Monday Afternoon | --- - |
| Monday Night | --- - |
| Tuesday Morning | --- - |
| Tuesday Afternoon | --- - |
| Tuesday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Monday Morning | WSW 35 - 50 |
| Monday Afternoon | W 30 - 40 |
| Monday Night | SW 20 - 30 |
| Tuesday Morning | WSW 40 - 60 |
| Tuesday Afternoon | WSW 55 - 75 |
| Tuesday Night | SSW 35 - 50 |
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 21, 2018
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