Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Weather Synopsis for Friday & Thursday
A moisture-laden storm will impact the Pacific NW as an upper low off the Alaska panhandle brings a significant warm-front with rain and mountain snow as it lifts north and east across the region today and into the evening hours. Snow levels will rise over the course of the day on Friday, bringing a changeover to rain at Snoqualmie pass during the morning hours and at Stevens Pass during the afternoon hours. Mt. Baker base and Paradise will likely see snow mix with rain during the late afternoon and early evening hours before switching back to wet snow. Crest-level winds will be moderate to occasionally strong and increasing slightly throughout the day.
The cold front will follow right behind the warm front and will keep rain and mountain snow focused on the Washington Cascades and Olympics overnight, with the Mt. Hood area seeing a relative break. Crest-level winds in the Cascades will remain in the moderate to occasional strong range, decreasing gradually after midnight.
On Saturday, the cold frontal rain band remains over the Washington Cascades and Olympic, bringing light to moderate rain and snow, but a wave riding up the front will bring additional moderate to heavy rain and snow late Saturday afternoon through Saturday evening. The rainband drops south later Saturday night, bringing the moderate precipitation south into the Hood area. The Washington Cascades will experience slackening winds.
Weather Forecast
Olympics
Friday | Light rain and high elevation snow with rising snow levels during the morning hours. Moderate to occasionally strong SW winds, increasing slightly throughout the day. |
Friday Night | Light rain and snow. Moderate to occasionally strong winds decreasing toward morning. |
Saturday | Very light rain and snow, mainly in the afternoon. |
Saturday Night | Light rain and snow, particularly in the evening hours. |
Washington Cascades near and west of the Crest including Stevens, Snoqualmie and White Passes
Friday | Moderate to heavy rain and snow with rising snow levels and increasing moderate to occasionally strong winds. Paradise and Mt. Baker will receive the heaviest precipitation while Crystal will see mostly light precipitation. |
Friday Night | Paradise and Mt. Baker will receive moderate to heavy rain and snow, while Crystal and the Cascade Passes will see light to moderate precipitation. Moderate to occasionally strong winds gradually decreasing. |
Saturday | Light rain and snow will continue in most areas, but Paradise will see moderate to heavy rain and snow. Precipitation will increase late in the day. Moderate S-SW winds. |
Saturday Night | Moderate to heavy rain and snow at Paradise and Mt. Baker, light precipitation elsewhere. Moderate S-SW winds becoming light by morning. |
East Slopes of the Washington Cascades
Friday | Moderate rain and snow with increasing moderate to occasionally strong SW winds. Rising snow levels throughout the day. |
Friday Night | Moderate rain and snow with moderate to occasionally strong SW winds, decreasing after midnight. Slightly lowering snow levels. |
Saturday | Light rain and snow. |
Saturday Night | Light to moderate rain and snow, becoming light after midnight. |
Mt. Hood
Friday | Moderate rain and snow, decreasing late in the day. Moderate to occasionally strong SW winds. |
Friday Night | Decreasing light rain and snow. |
Saturday | Light rain and snow. |
Saturday Night | Light rain and snow, increasing after midnight. |
Issued: 8:08 AM PDT Friday, April 13, 2018
Snow/Freezing Level (ft)
Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
---|---|---|---|---|---|---|---|---|---|
Friday Morning | Snow Level * | 5000' | 3000' | 3000' | ' | ' | 3500' | ' | 4000' |
Friday Afternoon | Snow Level | 5000' | 4000' | 5000' | ' | ' | 5000' | ' | 5000' |
Friday Night | Snow Level | 4000' | 4000' | 4000' | ' | ' | 4500' | ' | 4000' |
Saturday Morning | Snow Level | 4000' | 4000' | 5000' | ' | ' | 4500' | ' | 5000' |
Saturday Afternoon | Snow Level | 3500' | 4000' | 5000' | ' | ' | 5000' | ' | 5000' |
Saturday Night | Snow Level | 3000' | 4000' | 4000' | ' | ' | 4500' | ' | 5000' |
Hurricane Ridge | Elevation |
---|---|
Friday Morning |
Snow Level 5000' (Easterly Flow *) |
Friday Afternoon |
Snow Level 5000' |
Friday Night |
Snow Level 4000' |
Saturday Morning |
Snow Level 4000' |
Saturday Afternoon |
Snow Level 3500' |
Saturday Night |
Snow Level 3000' |
Mt. Baker | Elevation |
---|---|
Friday Morning |
Snow Level 3000' (Easterly Flow *) |
Friday Afternoon |
Snow Level 4000' |
Friday Night |
Snow Level 4000' |
Saturday Morning |
Snow Level 4000' |
Saturday Afternoon |
Snow Level 4000' |
Saturday Night |
Snow Level 4000' |
Washington Pass | Elevation |
---|---|
Friday Morning |
Snow Level 3000' (Easterly Flow *) |
Friday Afternoon |
Snow Level 5000' |
Friday Night |
Snow Level 4000' |
Saturday Morning |
Snow Level 5000' |
Saturday Afternoon |
Snow Level 5000' |
Saturday Night |
Snow Level 4000' |
Leavenworth | Elevation |
---|---|
Friday Morning |
Snow Level ' (Easterly Flow *) |
Friday Afternoon |
Snow Level ' |
Friday Night |
Snow Level ' |
Saturday Morning |
Snow Level ' |
Saturday Afternoon |
Snow Level ' |
Saturday Night |
Snow Level ' |
Stevens Pass | Elevation |
---|---|
Friday Morning |
Snow Level ' (Easterly Flow *) |
Friday Afternoon |
Snow Level ' |
Friday Night |
Snow Level ' |
Saturday Morning |
Snow Level ' |
Saturday Afternoon |
Snow Level ' |
Saturday Night |
Snow Level ' |
Snoqualmie Pass | Elevation |
---|---|
Friday Morning |
Snow Level 3500' (Easterly Flow *) |
Friday Afternoon |
Snow Level 5000' |
Friday Night |
Snow Level 4500' |
Saturday Morning |
Snow Level 4500' |
Saturday Afternoon |
Snow Level 5000' |
Saturday Night |
Snow Level 4500' |
Mt. Rainier & Crystal | Elevation |
---|---|
Friday Morning |
Snow Level ' (Easterly Flow *) |
Friday Afternoon |
Snow Level ' |
Friday Night |
Snow Level ' |
Saturday Morning |
Snow Level ' |
Saturday Afternoon |
Snow Level ' |
Saturday Night |
Snow Level ' |
Mt. Hood | Elevation |
---|---|
Friday Morning |
Snow Level 4000' (Easterly Flow *) |
Friday Afternoon |
Snow Level 5000' |
Friday Night |
Snow Level 4000' |
Saturday Morning |
Snow Level 5000' |
Saturday Afternoon |
Snow Level 5000' |
Saturday Night |
Snow Level 5000' |
* 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
Thursday | Thursday | |
---|---|---|
Hurricane Ridge | 0.50 - 0.75 | 0.25 - 0.50 |
Mt Baker Ski Area | 1.50 - 2.00 | 1.00 - 1.50 |
Washington Pass | 1.00 - 1.50 | 0 - 0.75 |
Stevens Pass | 1.00 - 1.50 | 0 - 0.75 |
Snoqualmie Pass | 0 - 1.50 | 0.75 - 1.00 |
Mission Ridge | LT 0.25 | LT 0.25 |
Crystal Mt | 0 - 0.75 | 0 - 0.50 |
Paradise | 2.00 - 3.00 | 1.50 - 2.50 |
White Pass | 0.75 - 1.00 | 0.25 - 0.50 |
Mt Hood Meadows | 0 - 0.75 | 0.25 - 0.50 |
Timberline | 0.75 - 1.00 | 0.25 - 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: 8:08 AM PDT Friday, April 13, 2018
Free Winds at 5000' (mph)
Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
---|---|---|---|---|---|
Friday Morning | SSW 25 - 35 | SSE 25 - 35 | SW 20 - 30 | --- - | SW 30 - 40 |
Friday Afternoon | SW 30 - 40 | S 25 - 35 | SW 30 - 40 | --- - | SW 30 - 40 |
Friday Night | SW 25 - 35 | SW 20 - 30 | SW 30 - 40 | --- - | SW 25 - 35 |
Saturday Morning | SW 10 - 20 | S 10 - 20 | S 20 - 30 | --- - | SSW 15 - 25 |
Saturday Afternoon | SSW 5 - 15 | SSW 10 - 20 | SSW 15 - 25 | --- - | SSW 20 - 30 |
Saturday Night | W 0 - 10 | VAR 0 - 10 | SSW 10 - 20 | --- - | SSW 20 - 30 |
Hurricane Ridge | Elevation |
---|---|
Friday Morning | SSW 25 - 35 |
Friday Afternoon | SW 30 - 40 |
Friday Night | SW 25 - 35 |
Saturday Morning | SW 10 - 20 |
Saturday Afternoon | SSW 5 - 15 |
Saturday Night | W 0 - 10 |
Mt. Baker | Elevation |
---|---|
Friday Morning | SSE 25 - 35 |
Friday Afternoon | S 25 - 35 |
Friday Night | SW 20 - 30 |
Saturday Morning | S 10 - 20 |
Saturday Afternoon | SSW 10 - 20 |
Saturday Night | VAR 0 - 10 |
Stevens and Snoqualmie Pass | Elevation |
---|---|
Friday Morning | SW 20 - 30 |
Friday Afternoon | SW 30 - 40 |
Friday Night | SW 30 - 40 |
Saturday Morning | S 20 - 30 |
Saturday Afternoon | SSW 15 - 25 |
Saturday Night | SSW 10 - 20 |
Mt. Rainier | Elevation |
---|---|
Friday Morning | --- - |
Friday Afternoon | --- - |
Friday Night | --- - |
Saturday Morning | --- - |
Saturday Afternoon | --- - |
Saturday Night | --- - |
Mt. Hood | Elevation |
---|---|
Friday Morning | SW 30 - 40 |
Friday Afternoon | SW 30 - 40 |
Friday Night | SW 25 - 35 |
Saturday Morning | SSW 15 - 25 |
Saturday Afternoon | SSW 20 - 30 |
Saturday Night | SSW 20 - 30 |
Hurricane Ridge | Direction - Speed |
---|---|
Friday Morning | SSW 25 - 35 |
Friday Afternoon | SW 30 - 40 |
Friday Night | SW 25 - 35 |
Saturday Morning | SW 10 - 20 |
Saturday Afternoon | SSW 5 - 15 |
Saturday Night | W 0 - 10 |
Mt. Baker | Direction - Speed |
---|---|
Friday Morning | SSE 25 - 35 |
Friday Afternoon | S 25 - 35 |
Friday Night | SW 20 - 30 |
Saturday Morning | S 10 - 20 |
Saturday Afternoon | SSW 10 - 20 |
Saturday Night | VAR 0 - 10 |
Stevens and Snoqualmie Pass | Direction - Speed |
---|---|
Friday Morning | SW 20 - 30 |
Friday Afternoon | SW 30 - 40 |
Friday Night | SW 30 - 40 |
Saturday Morning | S 20 - 30 |
Saturday Afternoon | SSW 15 - 25 |
Saturday Night | SSW 10 - 20 |
Mt. Rainier | Direction - Speed |
---|---|
Friday Morning | --- - |
Friday Afternoon | --- - |
Friday Night | --- - |
Saturday Morning | --- - |
Saturday Afternoon | --- - |
Saturday Night | --- - |
Mt. Hood | Direction - Speed |
---|---|
Friday Morning | SW 30 - 40 |
Friday Afternoon | SW 30 - 40 |
Friday Night | SW 25 - 35 |
Saturday Morning | SSW 15 - 25 |
Saturday Afternoon | SSW 20 - 30 |
Saturday Night | SSW 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.
Free Winds at 9000' (mph)
Mt. Baker | Washington Pass | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
---|---|---|---|---|---|
Friday Morning | --- - | --- - | --- - | --- - | --- - |
Friday Afternoon | --- - | --- - | --- - | --- - | --- - |
Friday Night | --- - | --- - | --- - | --- - | --- - |
Saturday Morning | --- - | --- - | --- - | --- - | --- - |
Saturday Afternoon | --- - | --- - | --- - | --- - | --- - |
Saturday Night | --- - | --- - | --- - | --- - | --- - |
Mt. Baker | Direction - Speed |
---|---|
Friday Morning | --- - |
Friday Afternoon | --- - |
Friday Night | --- - |
Saturday Morning | --- - |
Saturday Afternoon | --- - |
Saturday Night | --- - |
Washington Pass | Direction - Speed |
---|---|
Friday Morning | --- - |
Friday Afternoon | --- - |
Friday Night | --- - |
Saturday Morning | --- - |
Saturday Afternoon | --- - |
Saturday Night | --- - |
Stevens and Snoqualmie Pass | Direction - Speed |
---|---|
Friday Morning | --- - |
Friday Afternoon | --- - |
Friday Night | --- - |
Saturday Morning | --- - |
Saturday Afternoon | --- - |
Saturday Night | --- - |
Mt. Rainier | Direction - Speed |
---|---|
Friday Morning | --- - |
Friday Afternoon | --- - |
Friday Night | --- - |
Saturday Morning | --- - |
Saturday Afternoon | --- - |
Saturday Night | --- - |
Mt. Hood | Direction - Speed |
---|---|
Friday Morning | --- - |
Friday Afternoon | --- - |
Friday Night | --- - |
Saturday Morning | --- - |
Saturday Afternoon | --- - |
Saturday Night | --- - |
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 Apr 10, 2018
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