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 ridge offshore will slide east of the Cascades this afternoon, quickly transitioning the area from our wet weekend to dry and warm weather on Monday. This will be a dirty ridge, with a fair amount of high clouds slipping underneath and creating some filtered sunshine. Freezing levels will soar to 7000 feet in the north and 10000 feet in the south over Mt. Hood this afternoon.
A Pacific frontal system offshore will approach the area Monday night with increasing clouds. The air mass should be fairly dry and clouds should slowly lower with light rain and snow developing in the morning hours on Tuesday. A new and rapidly developing low pressure system forming along the existing frontal boundary will curl toward Vancouver Island on Tuesday. This will bring a burst of wind to the Olympics and northwest Cascades Tuesday morning with the front lifting through the Cascades late morning. Showers should generally become light and scattered in the afternoon as a cooling trend ensues. Locally heavier showers should be seen in the Mt. Baker area.
Scattered showers will continue Tuesday night as another Pacific frontal system approaches the area.
Weather Forecast
Olympics
| Monday | Partly sunny with filtered sunshine and high clouds. Mild. |
| Monday Night | Increasing clouds. Slight chance of rain and snow late tonight. Mild. |
| Tuesday | Light to occasionally moderate rain and snow becoming mostly cloudy with scattered light rain and snow showers in the afternoon. Cooling trend. |
| Tuesday Night | Mostly cloudy with light rain and snow showers. |
Washington Cascades near and west of the Crest including Stevens, Snoqualmie and White Passes
| Monday | Partly sunny with filtered sunshine and high clouds north Cascades. Mostly sunny with periods of high clouds south Cascades. Warm. |
| Monday Night | Increasing clouds. Slight chance of rain and snow late tonight. Mild. |
| Tuesday | Light to occasionally moderate rain and snow becoming mostly cloudy with scattered light rain and snow showers in the afternoon. Showers occasionally moderate Mt. Baker area. Cooling trend. |
| Tuesday Night | Mostly cloudy with scattered light rain and snow showers except occasionally moderate Mt. Baker area. |
East Slopes of the Washington Cascades
| Monday | Partly sunny with filtered sunshine and high clouds north Cascades. Mostly sunny with periods of high clouds south Cascades. Warm. |
| Monday Night | Increasing clouds. Slight chance of rain and snow late tonight. Mild. |
| Tuesday | Light rain and snow becoming partly to mostly cloudy with scattered light rain and snow showers in the afternoon. Cooling trend. |
| Tuesday Night | Partly to mostly cloudy with isolated light rain and snow showers. |
Mt. Hood
| Monday | Mostly sunny with periods of high clouds. Warm. |
| Monday Night | Increasing clouds. Slight chance of rain and snow late tonight. Mild. |
| Tuesday | Light rain and snow becoming mostly cloudy with scattered light rain and snow showers in the afternoon. Cooling trend. |
| Tuesday Night | Partly to mostly cloudy with isolated light rain and snow showers. |
Issued: 8:08 AM PDT Monday, April 9, 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 | Freezing Level | 5000' | 4500' | 4500' | ' | ' | 4000' | ' | 5000' |
| Monday Afternoon | Freezing Level | 9000' | 7000' | 7000' | ' | ' | 8000' | ' | 10000' |
| Monday Night | Freezing Level | 9500' | 8000' | 7500' | ' | ' | 9500' | ' | 10500' |
| Tuesday Morning | Snow Level | 5500' | 6000' | 6000' | ' | ' | 6000' | ' | 7000' |
| Tuesday Afternoon | Snow Level | 4500' | 4500' | 5000' | ' | ' | 4500' | ' | 5500' |
| Tuesday Night | Snow Level | 4000' | 3500' | 3500' | ' | ' | 3500' | ' | 4000' |
| Hurricane Ridge | Elevation |
|---|---|
| Monday Morning |
Freezing Level 5000' |
| Monday Afternoon |
Freezing Level 9000' |
| Monday Night |
Freezing Level 9500' |
| Tuesday Morning |
Snow Level 5500' |
| Tuesday Afternoon |
Snow Level 4500' |
| Tuesday Night |
Snow Level 4000' |
| Mt. Baker | Elevation |
|---|---|
| Monday Morning |
Freezing Level 4500' |
| Monday Afternoon |
Freezing Level 7000' |
| Monday Night |
Freezing Level 8000' |
| Tuesday Morning |
Snow Level 6000' |
| Tuesday Afternoon |
Snow Level 4500' |
| Tuesday Night |
Snow Level 3500' |
| Washington Pass | Elevation |
|---|---|
| Monday Morning |
Freezing Level 4500' |
| Monday Afternoon |
Freezing Level 7000' |
| Monday Night |
Freezing Level 7500' |
| Tuesday Morning |
Snow Level 6000' |
| Tuesday Afternoon |
Snow Level 5000' |
| Tuesday Night |
Snow Level 3500' |
| Leavenworth | Elevation |
|---|---|
| Monday Morning |
Freezing Level ' |
| Monday Afternoon |
Freezing Level ' |
| Monday Night |
Freezing Level ' |
| Tuesday Morning |
Snow Level ' |
| Tuesday Afternoon |
Snow Level ' |
| Tuesday Night |
Snow Level ' |
| Stevens Pass | Elevation |
|---|---|
| Monday Morning |
Freezing Level ' |
| Monday Afternoon |
Freezing Level ' |
| Monday Night |
Freezing Level ' |
| Tuesday Morning |
Snow Level ' |
| Tuesday Afternoon |
Snow Level ' |
| Tuesday Night |
Snow Level ' |
| Snoqualmie Pass | Elevation |
|---|---|
| Monday Morning |
Freezing Level 4000' |
| Monday Afternoon |
Freezing Level 8000' |
| Monday Night |
Freezing Level 9500' |
| Tuesday Morning |
Snow Level 6000' |
| Tuesday Afternoon |
Snow Level 4500' |
| Tuesday Night |
Snow Level 3500' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Monday Morning |
Freezing Level ' |
| Monday Afternoon |
Freezing Level ' |
| Monday Night |
Freezing Level ' |
| Tuesday Morning |
Snow Level ' |
| Tuesday Afternoon |
Snow Level ' |
| Tuesday Night |
Snow Level ' |
| Mt. Hood | Elevation |
|---|---|
| Monday Morning |
Freezing Level 5000' |
| Monday Afternoon |
Freezing Level 10000' |
| Monday Night |
Freezing Level 10500' |
| Tuesday Morning |
Snow Level 7000' |
| Tuesday Afternoon |
Snow Level 5500' |
| Tuesday 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
| Wednesday | Wednesday | |
|---|---|---|
| Hurricane Ridge | LT 0.10 | 0 - 0.50 |
| Mt Baker Ski Area | LT 0.10 | 1.00 - 1.50 |
| Washington Pass | LT 0.10 | LT 0.25 |
| Stevens Pass | LT 0.10 | 0.25 - 0.50 |
| Snoqualmie Pass | LT 0.10 | 0 - 0.50 |
| Mission Ridge | LT 0.10 | LT 0.10 |
| Crystal Mt | LT 0.10 | LT 0.25 |
| Paradise | LT 0.10 | 0 - 0.75 |
| White Pass | LT 0.10 | LT 0.25 |
| Mt Hood Meadows | LT 0.10 | LT 0.25 |
| Timberline | LT 0.10 | 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: 8:08 AM PDT Monday, April 9, 2018
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Monday Morning | VAR 0 - 10 | VAR 0 - 10 | VAR 0 - 10 | --- - | VAR 0 - 10 |
| Monday Afternoon | SE 5 - 15 | SE 0 - 10 | SE 0 - 10 | --- - | SE 5 - 15 |
| Monday Night | SSE 15 - 25 | SE 10 - 20 | SE 15 - 25 | --- - | SE 10 - 20 |
| Tuesday Morning | S 30 - 50 | SSE 30 - 50 | SE 15 - 25 | --- - | SW 15 - 25 |
| Tuesday Afternoon | SSW 25 - 35 | SW 15 - 25 | SW 15 - 25 | --- - | SW 15 - 25 |
| Tuesday Night | S 15 - 30 | S 15 - 25 | S 15 - 25 | --- - | SW 20 - 30 |
| Hurricane Ridge | Elevation |
|---|---|
| Monday Morning | VAR 0 - 10 |
| Monday Afternoon | SE 5 - 15 |
| Monday Night | SSE 15 - 25 |
| Tuesday Morning | S 30 - 50 |
| Tuesday Afternoon | SSW 25 - 35 |
| Tuesday Night | S 15 - 30 |
| Mt. Baker | Elevation |
|---|---|
| Monday Morning | VAR 0 - 10 |
| Monday Afternoon | SE 0 - 10 |
| Monday Night | SE 10 - 20 |
| Tuesday Morning | SSE 30 - 50 |
| Tuesday Afternoon | SW 15 - 25 |
| Tuesday Night | S 15 - 25 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Monday Morning | VAR 0 - 10 |
| Monday Afternoon | SE 0 - 10 |
| Monday Night | SE 15 - 25 |
| Tuesday Morning | SE 15 - 25 |
| Tuesday Afternoon | SW 15 - 25 |
| Tuesday Night | S 15 - 25 |
| Mt. Rainier | Elevation |
|---|---|
| Monday Morning | --- - |
| Monday Afternoon | --- - |
| Monday Night | --- - |
| Tuesday Morning | --- - |
| Tuesday Afternoon | --- - |
| Tuesday Night | --- - |
| Mt. Hood | Elevation |
|---|---|
| Monday Morning | VAR 0 - 10 |
| Monday Afternoon | SE 5 - 15 |
| Monday Night | SE 10 - 20 |
| Tuesday Morning | SW 15 - 25 |
| Tuesday Afternoon | SW 15 - 25 |
| Tuesday Night | SW 20 - 30 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Monday Morning | VAR 0 - 10 |
| Monday Afternoon | SE 5 - 15 |
| Monday Night | SSE 15 - 25 |
| Tuesday Morning | S 30 - 50 |
| Tuesday Afternoon | SSW 25 - 35 |
| Tuesday Night | S 15 - 30 |
| Mt. Baker | Direction - Speed |
|---|---|
| Monday Morning | VAR 0 - 10 |
| Monday Afternoon | SE 0 - 10 |
| Monday Night | SE 10 - 20 |
| Tuesday Morning | SSE 30 - 50 |
| Tuesday Afternoon | SW 15 - 25 |
| Tuesday Night | S 15 - 25 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Monday Morning | VAR 0 - 10 |
| Monday Afternoon | SE 0 - 10 |
| Monday Night | SE 15 - 25 |
| Tuesday Morning | SE 15 - 25 |
| Tuesday Afternoon | SW 15 - 25 |
| Tuesday Night | S 15 - 25 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Monday Morning | --- - |
| Monday Afternoon | --- - |
| Monday Night | --- - |
| Tuesday Morning | --- - |
| Tuesday Afternoon | --- - |
| Tuesday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Monday Morning | VAR 0 - 10 |
| Monday Afternoon | SE 5 - 15 |
| Monday Night | SE 10 - 20 |
| Tuesday Morning | SW 15 - 25 |
| Tuesday Afternoon | SW 15 - 25 |
| Tuesday Night | SW 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 | |
|---|---|---|---|---|---|
| Monday Morning | W 5 - 15 | W 0 - 10 | W 15 - 25 | --- - | WSW 10 - 20 |
| Monday Afternoon | SW 10 - 20 | SW 10 - 20 | SW 15 - 25 | --- - | SW 15 - 25 |
| Monday Night | S 25 - 35 | S 15 - 25 | S 25 - 35 | --- - | SSW 25 - 35 |
| Tuesday Morning | S 40 - 50 | SSW 20 - 30 | SSW 25 - 35 | --- - | SW 45 - 55 |
| Tuesday Afternoon | SW 20 - 30 | SW 25 - 35 | SW 30 - 40 | --- - | SW 40 - 50 |
| Tuesday Night | SW 25 - 35 | SW 20 - 30 | SW 25 - 35 | --- - | SW 30 - 40 |
| Mt. Baker | Direction - Speed |
|---|---|
| Monday Morning | W 5 - 15 |
| Monday Afternoon | SW 10 - 20 |
| Monday Night | S 25 - 35 |
| Tuesday Morning | S 40 - 50 |
| Tuesday Afternoon | SW 20 - 30 |
| Tuesday Night | SW 25 - 35 |
| Washington Pass | Direction - Speed |
|---|---|
| Monday Morning | W 0 - 10 |
| Monday Afternoon | SW 10 - 20 |
| Monday Night | S 15 - 25 |
| Tuesday Morning | SSW 20 - 30 |
| Tuesday Afternoon | SW 25 - 35 |
| Tuesday Night | SW 20 - 30 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Monday Morning | W 15 - 25 |
| Monday Afternoon | SW 15 - 25 |
| Monday Night | S 25 - 35 |
| Tuesday Morning | SSW 25 - 35 |
| Tuesday Afternoon | SW 30 - 40 |
| Tuesday Night | SW 25 - 35 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Monday Morning | --- - |
| Monday Afternoon | --- - |
| Monday Night | --- - |
| Tuesday Morning | --- - |
| Tuesday Afternoon | --- - |
| Tuesday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Monday Morning | WSW 10 - 20 |
| Monday Afternoon | SW 15 - 25 |
| Monday Night | SSW 25 - 35 |
| Tuesday Morning | SW 45 - 55 |
| Tuesday Afternoon | SW 40 - 50 |
| Tuesday Night | SW 30 - 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.
Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Previous forecast from Apr 6, 2018
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