Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Weather Synopsis for Sunday & Sunday
A trough lingers over the Pacific Northwest with an open low to the south over central Oregon. The atmosphere has returned to a more stable state as we get a break between storms with generally fair weather and partly cloudy skies expected on Sunday. High clouds may increase slightly in the afternoon over the Olympics ahead of the first in a series of weak, but moisture-laden systems which should approach the region on a NW flow, riding over a large ridge covering much of the eastern Pacific Ocean. The systems will bring increasing precipitation, increasing generally westerly flow, and rising snow levels.The systems have very little upper-level signature and generally weak surface fronts.
On Sunday night, a weak warm front arrives, bringing increasing wind speeds, a slight wind shift from W-SW to W, a warming trend, and increasing light snow.
Monday should see light to moderate rain and snow as temperatures gradually increase to Snoqualmie Pass level or slightly higher by the end of the day.
Monday night, a second system arrives on a NW flow as snow levels continue to rise. Snow may mix with or change to rain at Stevens Pass. Rain and snow will become moderate to occasionally heavy, with much more precipitation in the Washington Cascades than near Mt. Hood.
Weather Forecast
Olympics
| Sunday | Partly cloudy skies with high clouds increasing in the afternoon. |
| Sunday Night | Cloudy with periods of light snow developing after midnight. |
| Monday | Cloudy with periods of light snow more likely in the morning. Warming trend. |
| Monday Night | Cloudy with periods of light rain or snow possible. Continued warming trend. |
Washington Cascades near and west of the Crest including Stevens, Snoqualmie and White Passes
| Sunday | Partly cloudy. |
| Sunday Night | Increasing light snow, mainly after midnight. Increasing W-SW winds becoming light to moderate. |
| Monday | Light to moderate rain or snow. Gradual warming trend. |
| Monday Night | Increasing moderate to occasionally rain or snow. Continued warming trend. |
East Slopes of the Washington Cascades
| Sunday | Partly cloudy. |
| Sunday Night | Increasing light snow, mainly after midnight. Increasing W-SW winds becoming light to moderate. |
| Monday | Light rain or snow. Gradual warming trend. |
| Monday Night | Increasing moderate rain or snow. Continued warming trend. |
Mt. Hood
| Sunday | Partly cloudy with a chance of a snow shower in the afternoon. |
| Sunday Night | Mostly cloudy, becoming cloudy. Increasing W-SW winds becoming light to moderate. |
| Monday | Light to moderate rain or snow. Gradual warming trend. |
| Monday Night | Light rain or snow, decreasing. |
Issued: 7:54 AM PDT Sunday, March 25, 2018
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Sunday Morning | Snow Level | 2000' | 2000' | 2500' | ' | ' | 2500' | ' | 3000' |
| Sunday Afternoon | Snow Level | 2500' | 2500' | 3000' | ' | ' | 3000' | ' | 3000' |
| Sunday Night | Snow Level | 2000' | 1500' | 1000' | ' | ' | 1500' | ' | 1500' |
| Monday Morning | Snow Level | 3000' | 2500' | 3500' | ' | ' | 3000' | ' | 3000' |
| Monday Afternoon | Snow Level | 4000' | 3000' | 4000' | ' | ' | 3500' | ' | 3500' |
| Monday Night | Snow Level | 5500' | 3500' | 3500' | ' | ' | 4000' | ' | 4000' |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Morning |
Snow Level 2000' |
| Sunday Afternoon |
Snow Level 2500' |
| Sunday Night |
Snow Level 2000' |
| Monday Morning |
Snow Level 3000' |
| Monday Afternoon |
Snow Level 4000' |
| Monday Night |
Snow Level 5500' |
| Mt. Baker | Elevation |
|---|---|
| Sunday Morning |
Snow Level 2000' |
| Sunday Afternoon |
Snow Level 2500' |
| Sunday Night |
Snow Level 1500' |
| Monday Morning |
Snow Level 2500' |
| Monday Afternoon |
Snow Level 3000' |
| Monday Night |
Snow Level 3500' |
| Washington Pass | Elevation |
|---|---|
| Sunday Morning |
Snow Level 2500' |
| Sunday Afternoon |
Snow Level 3000' |
| Sunday Night |
Snow Level 1000' |
| Monday Morning |
Snow Level 3500' |
| Monday Afternoon |
Snow Level 4000' |
| Monday Night |
Snow Level 3500' |
| Leavenworth | Elevation |
|---|---|
| Sunday Morning |
Snow Level ' |
| Sunday Afternoon |
Snow Level ' |
| Sunday Night |
Snow Level ' |
| Monday Morning |
Snow Level ' |
| Monday Afternoon |
Snow Level ' |
| Monday Night |
Snow Level ' |
| Stevens Pass | Elevation |
|---|---|
| Sunday Morning |
Snow Level ' |
| Sunday Afternoon |
Snow Level ' |
| Sunday Night |
Snow Level ' |
| Monday Morning |
Snow Level ' |
| Monday Afternoon |
Snow Level ' |
| Monday Night |
Snow Level ' |
| Snoqualmie Pass | Elevation |
|---|---|
| Sunday Morning |
Snow Level 2500' |
| Sunday Afternoon |
Snow Level 3000' |
| Sunday Night |
Snow Level 1500' |
| Monday Morning |
Snow Level 3000' |
| Monday Afternoon |
Snow Level 3500' |
| Monday Night |
Snow Level 4000' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Sunday Morning |
Snow Level ' |
| Sunday Afternoon |
Snow Level ' |
| Sunday Night |
Snow Level ' |
| Monday Morning |
Snow Level ' |
| Monday Afternoon |
Snow Level ' |
| Monday Night |
Snow Level ' |
| Mt. Hood | Elevation |
|---|---|
| Sunday Morning |
Snow Level 3000' |
| Sunday Afternoon |
Snow Level 3000' |
| Sunday Night |
Snow Level 1500' |
| Monday Morning |
Snow Level 3000' |
| Monday Afternoon |
Snow Level 3500' |
| Monday Night |
Snow Level 4000' |
* 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
| Sunday | Sunday | |
|---|---|---|
| Hurricane Ridge | LT 0.10 | 0.25 - 0.50 |
| Mt Baker Ski Area | LT 0.25 | 0.75 - 1.00 |
| Washington Pass | LT 0.10 | 0.25 - 0.50 |
| Stevens Pass | LT 0.10 | 0 - 1.00 |
| Snoqualmie Pass | LT 0.25 | 0 - 1.50 |
| Mission Ridge | LT 0.10 | LT 0.10 |
| Crystal Mt | LT 0.10 | LT 0.25 |
| Paradise | LT 0.25 | 1.00 - 1.50 |
| White Pass | 0 - 0.75 | 0.50 - 0.75 |
| Mt Hood Meadows | LT 0.10 | 0 - 0.50 |
| Timberline | LT 0.10 | 0.50 - 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: 7:54 AM PDT Sunday, March 25, 2018
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Sunday Morning | W 5 - 15 | W 5 - 15 | W 5 - 15 | --- - | WSW 20 - 30 |
| Sunday Afternoon | W 10 - 20 | W 10 - 20 | W 10 - 20 | --- - | W 20 - 30 |
| Sunday Night | SW 20 - 30 | SW 15 - 25 | WSW 20 - 30 | --- - | WSW 20 - 30 |
| Monday Morning | WSW 20 - 30 | WSW 10 - 20 | WSW 15 - 25 | --- - | WSW 20 - 30 |
| Monday Afternoon | WSW 25 - 35 | WSW 20 - 30 | WSW 25 - 35 | --- - | WSW 25 - 35 |
| Monday Night | WSW 30 - 40 | SW 20 - 35 | WSW 25 - 40 | --- - | WSW 25 - 40 |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Morning | W 5 - 15 |
| Sunday Afternoon | W 10 - 20 |
| Sunday Night | SW 20 - 30 |
| Monday Morning | WSW 20 - 30 |
| Monday Afternoon | WSW 25 - 35 |
| Monday Night | WSW 30 - 40 |
| Mt. Baker | Elevation |
|---|---|
| Sunday Morning | W 5 - 15 |
| Sunday Afternoon | W 10 - 20 |
| Sunday Night | SW 15 - 25 |
| Monday Morning | WSW 10 - 20 |
| Monday Afternoon | WSW 20 - 30 |
| Monday Night | SW 20 - 35 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Sunday Morning | W 5 - 15 |
| Sunday Afternoon | W 10 - 20 |
| Sunday Night | WSW 20 - 30 |
| Monday Morning | WSW 15 - 25 |
| Monday Afternoon | WSW 25 - 35 |
| Monday Night | WSW 25 - 40 |
| Mt. Rainier | Elevation |
|---|---|
| Sunday Morning | --- - |
| Sunday Afternoon | --- - |
| Sunday Night | --- - |
| Monday Morning | --- - |
| Monday Afternoon | --- - |
| Monday Night | --- - |
| Mt. Hood | Elevation |
|---|---|
| Sunday Morning | WSW 20 - 30 |
| Sunday Afternoon | W 20 - 30 |
| Sunday Night | WSW 20 - 30 |
| Monday Morning | WSW 20 - 30 |
| Monday Afternoon | WSW 25 - 35 |
| Monday Night | WSW 25 - 40 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Sunday Morning | W 5 - 15 |
| Sunday Afternoon | W 10 - 20 |
| Sunday Night | SW 20 - 30 |
| Monday Morning | WSW 20 - 30 |
| Monday Afternoon | WSW 25 - 35 |
| Monday Night | WSW 30 - 40 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Morning | W 5 - 15 |
| Sunday Afternoon | W 10 - 20 |
| Sunday Night | SW 15 - 25 |
| Monday Morning | WSW 10 - 20 |
| Monday Afternoon | WSW 20 - 30 |
| Monday Night | SW 20 - 35 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Morning | W 5 - 15 |
| Sunday Afternoon | W 10 - 20 |
| Sunday Night | WSW 20 - 30 |
| Monday Morning | WSW 15 - 25 |
| Monday Afternoon | WSW 25 - 35 |
| Monday Night | WSW 25 - 40 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Morning | --- - |
| Sunday Afternoon | --- - |
| Sunday Night | --- - |
| Monday Morning | --- - |
| Monday Afternoon | --- - |
| Monday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Morning | WSW 20 - 30 |
| Sunday Afternoon | W 20 - 30 |
| Sunday Night | WSW 20 - 30 |
| Monday Morning | WSW 20 - 30 |
| Monday Afternoon | WSW 25 - 35 |
| Monday Night | WSW 25 - 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.
Free Winds at 9000' (mph)
| Mt. Baker | Washington Pass | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Sunday Morning | SW 10 - 20 | WSW 10 - 20 | WSW 10 - 20 | --- - | WSW 10 - 20 |
| Sunday Afternoon | WSW 15 - 25 | WSW 15 - 25 | WSW 20 - 30 | --- - | WSW 20 - 30 |
| Sunday Night | WSW 25 - 40 | WSW 30 - 40 | WSW 35 - 50 | --- - | W 30 - 40 |
| Monday Morning | WSW 25 - 35 | WSW 25 - 35 | W 35 - 50 | --- - | W 30 - 40 |
| Monday Afternoon | WSW 30 - 40 | WSW 30 - 40 | WSW 45 - 65 | --- - | W 30 - 40 |
| Monday Night | WSW 50 - 70 | WSW 55 - 75 | W 50 - 70 | --- - | WNW 45 - 65 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Morning | SW 10 - 20 |
| Sunday Afternoon | WSW 15 - 25 |
| Sunday Night | WSW 25 - 40 |
| Monday Morning | WSW 25 - 35 |
| Monday Afternoon | WSW 30 - 40 |
| Monday Night | WSW 50 - 70 |
| Washington Pass | Direction - Speed |
|---|---|
| Sunday Morning | WSW 10 - 20 |
| Sunday Afternoon | WSW 15 - 25 |
| Sunday Night | WSW 30 - 40 |
| Monday Morning | WSW 25 - 35 |
| Monday Afternoon | WSW 30 - 40 |
| Monday Night | WSW 55 - 75 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Morning | WSW 10 - 20 |
| Sunday Afternoon | WSW 20 - 30 |
| Sunday Night | WSW 35 - 50 |
| Monday Morning | W 35 - 50 |
| Monday Afternoon | WSW 45 - 65 |
| Monday Night | W 50 - 70 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Morning | --- - |
| Sunday Afternoon | --- - |
| Sunday Night | --- - |
| Monday Morning | --- - |
| Monday Afternoon | --- - |
| Monday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Morning | WSW 10 - 20 |
| Sunday Afternoon | WSW 20 - 30 |
| Sunday Night | W 30 - 40 |
| Monday Morning | W 30 - 40 |
| Monday Afternoon | W 30 - 40 |
| Monday Night | WNW 45 - 65 |
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 Mar 25, 2018
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