Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Weather Synopsis for Saturday & Thursday
A weak upper level trough will pass through the area today. Periods of high clouds should give way to increasing sunshine by late afternoon. Freezing levels will be on the rise, especially for the central Washington Cascades and south to Mt. Hood.
A deep upper low of the Alaska/BC coast will dig south overnight through Sunday as a 110 kt jet become aimed into Washington State. A developing and fast moving frontal system will reach the Olympics and northwest Cascade early Sunday morning, with light snow spreading southward during the morning hours. This system will bring a quick increase in generally light snowfall through mid-day along the west slopes of the Cascades. A Puget Convergence Zone looks likely to form in the afternoon hours near Stevens Pass and shift more toward Snoqualmie Pass in the evening. Much colder air will be ushered into the region, with snow levels barely changing or even lowering during the day on Sunday despite the calendar flipping into April. Mt. Hood will see a slower onset of precipitatoin and cooling relative to areas further north.
Snow showers should ease somewhat but still continue Sunday night as the flow veers to NW.
Weather Forecast
Olympics
| Saturday | Partly to mostly cloudy with periods of high clouds becoming mostly sunny late in the afternoon. |
| Saturday Night | Partly cloudy becoming mostly cloudy after midnight. Light snow developing late tonight. |
| Sunday | Light snow becoming showers in the afternoon. Colder. |
| Sunday Night | Mostly cloudy with scattered light snow showers. |
Washington Cascades near and west of the Crest including Stevens, Snoqualmie and White Passes
| Saturday | Partly to mostly cloudy with periods of high clouds becoming mostly sunny late in the afternoon. Milder central and south Cascades. |
| Saturday Night | Partly cloudy becoming mostly cloudy after midnight. Light snow developing Mt. Baker area late tonight. |
| Sunday | Light snow spreading southward in the morning, becoming light to occasionally moderate in the afternoon. Heaviest snow in developing convergence zone central Cascades in the afternoon. Colder. |
| Sunday Night | Light to occasionally moderate snow showers, heaviest snow in convergence zone central Cascades in the evening. |
East Slopes of the Washington Cascades
| Saturday | Partly to mostly cloudy with periods of high clouds becoming mostly sunny late in the afternoon. Milder central-east and southeast Cascades. |
| Saturday Night | Partly cloudy becoming mostly cloudy late tonight. |
| Sunday | Light snow spreading southward in the morning. Snowfall becoming occasionally moderate near developing convergence zone central Cascades in the afternoon. Colder. |
| Sunday Night | Light snow showers in the evening, becoming mostly cloudy with scattered showers after midnight. |
Mt. Hood
| Saturday | Partly to mostly cloudy with periods of high clouds becoming mostly sunny late in the afternoon. Mild. |
| Saturday Night | Partly cloudy. |
| Sunday | Becoming cloudy with light snow developing mid-day. |
| Sunday Night | Light to occasionally moderate snow showers. Colder. |
Issued: 7:53 AM PDT Saturday, March 31, 2018
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Saturday Morning | Freezing Level | 3000' | 2500' | 2000' | ' | ' | 3000' | ' | 5000' |
| Saturday Afternoon | Freezing Level | 5500' | 5000' | 5000' | ' | ' | 6000' | ' | 7000' |
| Saturday Night | Freezing Level | 4000' | 3500' | 3000' | ' | ' | 4000' | ' | 5000' |
| Sunday Morning | Snow Level | 2500' | 2500' | 2500' | ' | ' | 2500' | ' | 4500' |
| Sunday Afternoon | Snow Level | 2000' | 2500' | 2500' | ' | ' | 2500' | ' | 4000' |
| Sunday Night | Snow Level | 500' | 500' | 500' | ' | ' | 500' | ' | 1000' |
| Hurricane Ridge | Elevation |
|---|---|
| Saturday Morning |
Freezing Level 3000' |
| Saturday Afternoon |
Freezing Level 5500' |
| Saturday Night |
Freezing Level 4000' |
| Sunday Morning |
Snow Level 2500' |
| Sunday Afternoon |
Snow Level 2000' |
| Sunday Night |
Snow Level 500' |
| Mt. Baker | Elevation |
|---|---|
| Saturday Morning |
Freezing Level 2500' |
| Saturday Afternoon |
Freezing Level 5000' |
| Saturday Night |
Freezing Level 3500' |
| Sunday Morning |
Snow Level 2500' |
| Sunday Afternoon |
Snow Level 2500' |
| Sunday Night |
Snow Level 500' |
| Washington Pass | Elevation |
|---|---|
| Saturday Morning |
Freezing Level 2000' |
| Saturday Afternoon |
Freezing Level 5000' |
| Saturday Night |
Freezing Level 3000' |
| Sunday Morning |
Snow Level 2500' |
| Sunday Afternoon |
Snow Level 2500' |
| Sunday Night |
Snow Level 500' |
| Leavenworth | Elevation |
|---|---|
| Saturday Morning |
Freezing Level ' |
| Saturday Afternoon |
Freezing Level ' |
| Saturday Night |
Freezing Level ' |
| Sunday Morning |
Snow Level ' |
| Sunday Afternoon |
Snow Level ' |
| Sunday Night |
Snow Level ' |
| Stevens Pass | Elevation |
|---|---|
| Saturday Morning |
Freezing Level ' |
| Saturday Afternoon |
Freezing Level ' |
| Saturday Night |
Freezing Level ' |
| Sunday Morning |
Snow Level ' |
| Sunday Afternoon |
Snow Level ' |
| Sunday Night |
Snow Level ' |
| Snoqualmie Pass | Elevation |
|---|---|
| Saturday Morning |
Freezing Level 3000' |
| Saturday Afternoon |
Freezing Level 6000' |
| Saturday Night |
Freezing Level 4000' |
| Sunday Morning |
Snow Level 2500' |
| Sunday Afternoon |
Snow Level 2500' |
| Sunday Night |
Snow Level 500' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Saturday Morning |
Freezing Level ' |
| Saturday Afternoon |
Freezing Level ' |
| Saturday Night |
Freezing Level ' |
| Sunday Morning |
Snow Level ' |
| Sunday Afternoon |
Snow Level ' |
| Sunday Night |
Snow Level ' |
| Mt. Hood | Elevation |
|---|---|
| Saturday Morning |
Freezing Level 5000' |
| Saturday Afternoon |
Freezing Level 7000' |
| Saturday Night |
Freezing Level 5000' |
| Sunday Morning |
Snow Level 4500' |
| Sunday Afternoon |
Snow Level 4000' |
| Sunday Night |
Snow Level 1000' |
* 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 | LT 0.10 | LT 0.25 |
| Mt Baker Ski Area | LT 0.10 | 0 - 0.75 |
| Washington Pass | LT 0.10 | LT 0.25 |
| Stevens Pass | LT 0.10 | 0.75 - 1.00 |
| Snoqualmie Pass | LT 0.10 | 0.75 - 1.00 |
| Mission Ridge | LT 0.10 | LT 0.10 |
| Crystal Mt | LT 0.10 | 0.25 - 0.50 |
| Paradise | LT 0.10 | 0.50 - 0.75 |
| White Pass | LT 0.10 | 0.25 - 0.50 |
| Mt Hood Meadows | LT 0.10 | 0.25 - 0.50 |
| Timberline | LT 0.10 | 0 - 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: 7:53 AM PDT Saturday, March 31, 2018
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Saturday Morning | E 0 - 10 | NE 0 - 10 | NW 0 - 10 | --- - | W 0 - 10 |
| Saturday Afternoon | S 0 - 10 | VAR 0 - 10 | W 0 - 10 | --- - | W 0 - 10 |
| Saturday Night | SW 5 - 15 | SW 5 - 15 | SW 5 - 15 | --- - | SW 5 - 15 |
| Sunday Morning | SW 5 - 15 | SW 10 - 20 | SW 10 - 20 | --- - | SW 10 - 20 |
| Sunday Afternoon | W 15 - 25 | WSW 15 - 25 | SW 15 - 25 | --- - | WSW 20 - 30 |
| Sunday Night | W 15 - 25 | W 5 - 15 | WSW 15 - 25 | --- - | W 25 - 35 |
| Hurricane Ridge | Elevation |
|---|---|
| Saturday Morning | E 0 - 10 |
| Saturday Afternoon | S 0 - 10 |
| Saturday Night | SW 5 - 15 |
| Sunday Morning | SW 5 - 15 |
| Sunday Afternoon | W 15 - 25 |
| Sunday Night | W 15 - 25 |
| Mt. Baker | Elevation |
|---|---|
| Saturday Morning | NE 0 - 10 |
| Saturday Afternoon | VAR 0 - 10 |
| Saturday Night | SW 5 - 15 |
| Sunday Morning | SW 10 - 20 |
| Sunday Afternoon | WSW 15 - 25 |
| Sunday Night | W 5 - 15 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Saturday Morning | NW 0 - 10 |
| Saturday Afternoon | W 0 - 10 |
| Saturday Night | SW 5 - 15 |
| Sunday Morning | SW 10 - 20 |
| Sunday Afternoon | SW 15 - 25 |
| Sunday Night | WSW 15 - 25 |
| Mt. Rainier | Elevation |
|---|---|
| Saturday Morning | --- - |
| Saturday Afternoon | --- - |
| Saturday Night | --- - |
| Sunday Morning | --- - |
| Sunday Afternoon | --- - |
| Sunday Night | --- - |
| Mt. Hood | Elevation |
|---|---|
| Saturday Morning | W 0 - 10 |
| Saturday Afternoon | W 0 - 10 |
| Saturday Night | SW 5 - 15 |
| Sunday Morning | SW 10 - 20 |
| Sunday Afternoon | WSW 20 - 30 |
| Sunday Night | W 25 - 35 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Saturday Morning | E 0 - 10 |
| Saturday Afternoon | S 0 - 10 |
| Saturday Night | SW 5 - 15 |
| Sunday Morning | SW 5 - 15 |
| Sunday Afternoon | W 15 - 25 |
| Sunday Night | W 15 - 25 |
| Mt. Baker | Direction - Speed |
|---|---|
| Saturday Morning | NE 0 - 10 |
| Saturday Afternoon | VAR 0 - 10 |
| Saturday Night | SW 5 - 15 |
| Sunday Morning | SW 10 - 20 |
| Sunday Afternoon | WSW 15 - 25 |
| Sunday Night | W 5 - 15 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Saturday Morning | NW 0 - 10 |
| Saturday Afternoon | W 0 - 10 |
| Saturday Night | SW 5 - 15 |
| Sunday Morning | SW 10 - 20 |
| Sunday Afternoon | SW 15 - 25 |
| Sunday Night | WSW 15 - 25 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Saturday Morning | --- - |
| Saturday Afternoon | --- - |
| Saturday Night | --- - |
| Sunday Morning | --- - |
| Sunday Afternoon | --- - |
| Sunday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Saturday Morning | W 0 - 10 |
| Saturday Afternoon | W 0 - 10 |
| Saturday Night | SW 5 - 15 |
| Sunday Morning | SW 10 - 20 |
| Sunday Afternoon | WSW 20 - 30 |
| Sunday Night | W 25 - 35 |
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 | NW 10 - 20 | WNW 10 - 20 | WNW 15 - 25 | --- - | WNW 10 - 20 |
| Saturday Afternoon | WSW 10 - 20 | SW 5 - 15 | WSW 10 - 20 | --- - | W 10 - 20 |
| Saturday Night | SW 20 - 30 | SW 20 - 30 | SW 25 - 35 | --- - | W 15 - 30 |
| Sunday Morning | WSW 20 - 30 | WSW 20 - 30 | SW 35 - 45 | --- - | W 30 - 40 |
| Sunday Afternoon | SW 25 - 35 | WSW 25 - 35 | WSW 35 - 45 | --- - | WSW 45 - 55 |
| Sunday Night | W 10 - 20 | NW 20 - 30 | WNW 30 - 40 | --- - | WSW 45 - 55 |
| Mt. Baker | Direction - Speed |
|---|---|
| Saturday Morning | NW 10 - 20 |
| Saturday Afternoon | WSW 10 - 20 |
| Saturday Night | SW 20 - 30 |
| Sunday Morning | WSW 20 - 30 |
| Sunday Afternoon | SW 25 - 35 |
| Sunday Night | W 10 - 20 |
| Washington Pass | Direction - Speed |
|---|---|
| Saturday Morning | WNW 10 - 20 |
| Saturday Afternoon | SW 5 - 15 |
| Saturday Night | SW 20 - 30 |
| Sunday Morning | WSW 20 - 30 |
| Sunday Afternoon | WSW 25 - 35 |
| Sunday Night | NW 20 - 30 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Saturday Morning | WNW 15 - 25 |
| Saturday Afternoon | WSW 10 - 20 |
| Saturday Night | SW 25 - 35 |
| Sunday Morning | SW 35 - 45 |
| Sunday Afternoon | WSW 35 - 45 |
| Sunday Night | WNW 30 - 40 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Saturday Morning | --- - |
| Saturday Afternoon | --- - |
| Saturday Night | --- - |
| Sunday Morning | --- - |
| Sunday Afternoon | --- - |
| Sunday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Saturday Morning | WNW 10 - 20 |
| Saturday Afternoon | W 10 - 20 |
| Saturday Night | W 15 - 30 |
| Sunday Morning | W 30 - 40 |
| Sunday Afternoon | WSW 45 - 55 |
| Sunday Night | WSW 45 - 55 |
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 30, 2018
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