Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Weather Synopsis for Sunday night through Tuesday
A flat high pressure maintains its presence over the region and should help to weaken an incoming frontal system as it arrives. The frontal system should slowly spread clouds into the region Sunday night with light to occasionally moderate rain increasing on Monday in the mountains of Washington State. Temperatures will be quite mild with freezing levels above 7000 ft on Sunday night and snow levels on Monday above 7000 ft as well. Winds should increase on Monday, but will remain in the light to moderate range for most locations. You might find moderate to strong winds in exposed locations in the Olympic Mountains by the end of the day on Monday.
Monday night the tail end of the weakening front should shift southward and light to occasionally moderate rain should focus on the west slopes of the central and southern Washington Cascades and Mt. Hood area after midnight. The frontal passage should cool temperatures very slightly over northwest Washington, but not significantly elsewhere.
Westerly flow aloft and at the surface should help maintain very light rain shower activity on Tuesday while the east slopes of the Cascades should experience full sunshine.
Weather Forecast
Hurricane Ridge
| Sunday Night | Mostly clear during the evening with increasing thin high clouds; low clouds increasing after midnight. Mild. Light winds. |
| Monday | Cloudy early with periods of light rain developing during the morning hours and persisting through the day. Mild. Increasing light to moderate winds. |
Mt. Baker
| Sunday Night | Mostly clear with high clouds increasing. Mild. Light winds. |
| Monday | Clouds lowering and thickening in the morning with light rain developing during the late morning or early afternoon hours. Mild. Light winds. |
Washington Pass and Leavenworth
| Sunday Night | Mostly clear with high clouds increasing. Mild. Light winds increasing. |
| Monday | High clouds lowering and thickening with a chance of light rain late in the day. Mild. Increasing generally light winds. |
Stevens and Snoqualmie Pass
| Sunday Night | Mostly clear with high clouds increasing. Mild. Increasing light winds at 5000 ft and light W winds at pass level. |
| Monday | Clouds lowering and thickening in the morning with light rain increasing in the afternoon. Mild. Increasing light winds at 5000 ft and W winds at pass level. |
Mt. Rainier, Crystal and White Pass
| Sunday Night | Mostly clear with high clouds increasing. Mild. Light winds. |
| Monday | Clouds lowering and thickening in the morning with light rain increasing in the afternoon at Paradise with very light precipitation possible at Crystal and White Passes. Mild. Increasing light winds. |
Mt. Hood
| Sunday Night | Mostly clear with high clouds increasing. Mild. Light winds. |
| Monday | Filtered sunshine in the morning with clouds lowering and thickening afternoon. Mild. Light winds becoming moderate. |
Issued: 2:41 PM PDT Sunday, April 21, 2019
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Sunday Evening | Freezing Level | 7500' | 7000' | 8000' | 8500' | 8000' | 7500' | 8000' | 9000' |
| Sunday Night | Freezing Level | 8000' | 6500' | 7000' | 9000' | 8000' | 8000' | 9000' | 9500' |
| Monday Morning | Snow Level | 7500' | 6000' | 6500' | 8000' | 7500' | 7500' | 8500' | 9500' |
| Monday Afternoon | Snow Level | 8000' | 6500' | 7000' | 8500' | 7500' | 8000' | 9000' | 10000' |
| Monday Evening | Snow Level | 8000' | 7500' | 8000' | 9000' | 8500' | 8500' | 9000' | 10000' |
| Monday Night | Snow Level | 7500' | 6000' | 7000' | 8000' | 7000' | 7500' | 8500' | 9500' |
| Tuesday Morning | Snow Level | 6500' | 6000' | 6000' | 7000' | 6500' | 7000' | 8000' | 9000' |
| Tuesday Afternoon | Snow Level | 5000' | 5500' | 6500' | 7000' | 6500' | 6500' | 8000' | 9500' |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Evening |
Freezing Level 7500' |
| Sunday Night |
Freezing Level 8000' |
| Monday Morning |
Snow Level 7500' |
| Monday Afternoon |
Snow Level 8000' |
| Monday Evening |
Snow Level 8000' |
| Monday Night |
Snow Level 7500' |
| Tuesday Morning |
Snow Level 6500' |
| Tuesday Afternoon |
Snow Level 5000' |
| Mt. Baker | Elevation |
|---|---|
| Sunday Evening |
Freezing Level 7000' |
| Sunday Night |
Freezing Level 6500' |
| Monday Morning |
Snow Level 6000' |
| Monday Afternoon |
Snow Level 6500' |
| Monday Evening |
Snow Level 7500' |
| Monday Night |
Snow Level 6000' |
| Tuesday Morning |
Snow Level 6000' |
| Tuesday Afternoon |
Snow Level 5500' |
| Washington Pass | Elevation |
|---|---|
| Sunday Evening |
Freezing Level 8000' |
| Sunday Night |
Freezing Level 7000' |
| Monday Morning |
Snow Level 6500' |
| Monday Afternoon |
Snow Level 7000' |
| Monday Evening |
Snow Level 8000' |
| Monday Night |
Snow Level 7000' |
| Tuesday Morning |
Snow Level 6000' |
| Tuesday Afternoon |
Snow Level 6500' |
| Leavenworth | Elevation |
|---|---|
| Sunday Evening |
Freezing Level 8500' |
| Sunday Night |
Freezing Level 9000' |
| Monday Morning |
Snow Level 8000' |
| Monday Afternoon |
Snow Level 8500' |
| Monday Evening |
Snow Level 9000' |
| Monday Night |
Snow Level 8000' |
| Tuesday Morning |
Snow Level 7000' |
| Tuesday Afternoon |
Snow Level 7000' |
| Stevens Pass | Elevation |
|---|---|
| Sunday Evening |
Freezing Level 8000' |
| Sunday Night |
Freezing Level 8000' |
| Monday Morning |
Snow Level 7500' |
| Monday Afternoon |
Snow Level 7500' |
| Monday Evening |
Snow Level 8500' |
| Monday Night |
Snow Level 7000' |
| Tuesday Morning |
Snow Level 6500' |
| Tuesday Afternoon |
Snow Level 6500' |
| Snoqualmie Pass | Elevation |
|---|---|
| Sunday Evening |
Freezing Level 7500' |
| Sunday Night |
Freezing Level 8000' |
| Monday Morning |
Snow Level 7500' |
| Monday Afternoon |
Snow Level 8000' |
| Monday Evening |
Snow Level 8500' |
| Monday Night |
Snow Level 7500' |
| Tuesday Morning |
Snow Level 7000' |
| Tuesday Afternoon |
Snow Level 6500' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Sunday Evening |
Freezing Level 8000' |
| Sunday Night |
Freezing Level 9000' |
| Monday Morning |
Snow Level 8500' |
| Monday Afternoon |
Snow Level 9000' |
| Monday Evening |
Snow Level 9000' |
| Monday Night |
Snow Level 8500' |
| Tuesday Morning |
Snow Level 8000' |
| Tuesday Afternoon |
Snow Level 8000' |
| Mt. Hood | Elevation |
|---|---|
| Sunday Evening |
Freezing Level 9000' |
| Sunday Night |
Freezing Level 9500' |
| Monday Morning |
Snow Level 9500' |
| Monday Afternoon |
Snow Level 10000' |
| Monday Evening |
Snow Level 10000' |
| Monday Night |
Snow Level 9500' |
| Tuesday Morning |
Snow Level 9000' |
| Tuesday Afternoon |
Snow Level 9500' |
* 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 Night | Tuesday | Tuesday Night | Tuesday | |
|---|---|---|---|---|
| 4 pm - 4 am | 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | 0 | LT 0.25 | LT 0.10 | 0 |
| Mt Baker Ski Area | 0 | LT 0.25 | LT 0.25 | LT 0.10 |
| Washington Pass | 0 | LT 0.10 | LT 0.10 | LT 0.10 |
| Leavenworth | 0 | 0 | 0 | 0 |
| Stevens Pass | 0 | LT 0.10 | 0.25 - 0.50 | LT 0.10 |
| Snoqualmie Pass | 0 | LT 0.10 | 0.25 - 0.50 | LT 0.10 |
| Mission Ridge | 0 | 0 | 0 | LT 0.10 |
| Crystal Mt | 0 | 0 | LT 0.10 | LT 0.10 |
| Paradise | 0 | LT 0.10 | 0.50 - 0.75 | LT 0.25 |
| White Pass | 0 | 0 | LT 0.25 | LT 0.25 |
| Mt Hood Meadows | 0 | 0 | 0.25 | LT 0.25 |
| Timberline | 0 | 0 | 0.25 | LT 0.25 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Tuesday | LT 0.25 |
| Tuesday Night | LT 0.10 |
| Tuesday | 0 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Tuesday | LT 0.25 |
| Tuesday Night | LT 0.25 |
| Tuesday | LT 0.10 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Tuesday | LT 0.10 |
| Tuesday Night | LT 0.10 |
| Tuesday | LT 0.10 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Tuesday | 0 |
| Tuesday Night | 0 |
| Tuesday | 0 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Tuesday | LT 0.10 |
| Tuesday Night | 0.25 - 0.50 |
| Tuesday | LT 0.10 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Tuesday | LT 0.10 |
| Tuesday Night | 0.25 - 0.50 |
| Tuesday | LT 0.10 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Tuesday | 0 |
| Tuesday Night | 0 |
| Tuesday | LT 0.10 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Tuesday | 0 |
| Tuesday Night | LT 0.10 |
| Tuesday | LT 0.10 |
| Paradise | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Tuesday | LT 0.10 |
| Tuesday Night | 0.50 - 0.75 |
| Tuesday | LT 0.25 |
| White Pass | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Tuesday | 0 |
| Tuesday Night | LT 0.25 |
| Tuesday | LT 0.25 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Tuesday | 0 |
| Tuesday Night | 0.25 |
| Tuesday | LT 0.25 |
| Timberline | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Tuesday | 0 |
| Tuesday Night | 0.25 |
| Tuesday | 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: 2:41 PM PDT Sunday, April 21, 2019
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Sunday Evening | SSW 0 - 10 | SW 0 - 10 | W 5 - 15 | W 0 - 10 | WSW 5 - 15 |
| Sunday Night | SSW 5 - 15 | SSW 5 - 15 | WSW 5 - 15 | W 0 - 10 | W 5 - 15 |
| Monday Morning | SSW 10 - 20 | SSW 5 - 15 | SW 5 - 15 | WSW 5 - 15 | WSW 10 - 20 |
| Monday Afternoon | SW 15 - 25 | SE 10 - 20 | SW 10 - 20 | SSW 5 - 15 | WSW 15 - 25 |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Evening | SSW 0 - 10 |
| Sunday Night | SSW 5 - 15 |
| Monday Morning | SSW 10 - 20 |
| Monday Afternoon | SW 15 - 25 |
| Mt. Baker | Elevation |
|---|---|
| Sunday Evening | SW 0 - 10 |
| Sunday Night | SSW 5 - 15 |
| Monday Morning | SSW 5 - 15 |
| Monday Afternoon | SE 10 - 20 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Sunday Evening | W 5 - 15 |
| Sunday Night | WSW 5 - 15 |
| Monday Morning | SW 5 - 15 |
| Monday Afternoon | SW 10 - 20 |
| Mt. Rainier | Elevation |
|---|---|
| Sunday Evening | W 0 - 10 |
| Sunday Night | W 0 - 10 |
| Monday Morning | WSW 5 - 15 |
| Monday Afternoon | SSW 5 - 15 |
| Mt. Hood | Elevation |
|---|---|
| Sunday Evening | WSW 5 - 15 |
| Sunday Night | W 5 - 15 |
| Monday Morning | WSW 10 - 20 |
| Monday Afternoon | WSW 15 - 25 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Sunday Evening | SSW 0 - 10 |
| Sunday Night | SSW 5 - 15 |
| Monday Morning | SSW 10 - 20 |
| Monday Afternoon | SW 15 - 25 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Evening | SW 0 - 10 |
| Sunday Night | SSW 5 - 15 |
| Monday Morning | SSW 5 - 15 |
| Monday Afternoon | SE 10 - 20 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Evening | W 5 - 15 |
| Sunday Night | WSW 5 - 15 |
| Monday Morning | SW 5 - 15 |
| Monday Afternoon | SW 10 - 20 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Evening | W 0 - 10 |
| Sunday Night | W 0 - 10 |
| Monday Morning | WSW 5 - 15 |
| Monday Afternoon | SSW 5 - 15 |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Evening | WSW 5 - 15 |
| Sunday Night | W 5 - 15 |
| Monday Morning | WSW 10 - 20 |
| Monday Afternoon | WSW 15 - 25 |
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 Evening | WSW 15 - 25 | WSW 10 - 20 | W 15 - 25 | W 15 - 25 | WNW 10 - 20 |
| Sunday Night | WSW 15 - 25 | WSW 10 - 20 | W 15 - 25 | W 15 - 25 | W 15 - 25 |
| Monday Morning | SW 25 - 35 | WSW 15 - 25 | W 20 - 30 | W 20 - 30 | WNW 20 - 30 |
| Monday Afternoon | WSW 25 - 35 | WSW 25 - 35 | WSW 25 - 35 | W 30 - 45 | W 25 - 35 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Evening | WSW 15 - 25 |
| Sunday Night | WSW 15 - 25 |
| Monday Morning | SW 25 - 35 |
| Monday Afternoon | WSW 25 - 35 |
| Washington Pass | Direction - Speed |
|---|---|
| Sunday Evening | WSW 10 - 20 |
| Sunday Night | WSW 10 - 20 |
| Monday Morning | WSW 15 - 25 |
| Monday Afternoon | WSW 25 - 35 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Evening | W 15 - 25 |
| Sunday Night | W 15 - 25 |
| Monday Morning | W 20 - 30 |
| Monday Afternoon | WSW 25 - 35 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Evening | W 15 - 25 |
| Sunday Night | W 15 - 25 |
| Monday Morning | W 20 - 30 |
| Monday Afternoon | W 30 - 45 |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Evening | WNW 10 - 20 |
| Sunday Night | W 15 - 25 |
| Monday Morning | WNW 20 - 30 |
| Monday Afternoon | 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.
Issued: 2:41 PM PDT Sunday, April 21, 2019
Extended Weather Synopsis for Tuesday night through Tuesday
Tuesday night, W flow continues, but very light drizzle activity along the W slopes of the Cascades should end. Wednesday through Thursday, subtle ridging builds over the western US, bringing generally fair, warm, and mostly sunny conditions to the region.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Tuesday Night | Snow Level | 4500' - 5500' | 4500' - 6500' | 9000' - 10000' | |
| Wednesday | Freezing Level | 4000' - 5000' | 4500' - 6500' | 8500' - 9500' | |
| Wednesday Night | Freezing Level | 5500' - 6500' | 700' - 8000' | 9500' - 10500' | |
| Thursday | Freezing Level | 6000' - 7000' | 7500' - 8500' | 10000' - 11000' |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Night |
Snow Level 4500' - 5500' |
| Wednesday |
Freezing Level 4000' - 5000' |
| Wednesday Night |
Freezing Level 5500' - 6500' |
| Thursday |
Freezing Level 6000' - 7000' |
| Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Night |
Snow Level 4500' - 6500' |
| Wednesday |
Freezing Level 4500' - 6500' |
| Wednesday Night |
Freezing Level 700' - 8000' |
| Thursday |
Freezing Level 7500' - 8500' |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Night |
Snow Level 9000' - 10000' |
| Wednesday |
Freezing Level 8500' - 9500' |
| Wednesday Night |
Freezing Level 9500' - 10500' |
| Thursday |
Freezing Level 10000' - 11000' |
* 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.
Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Previous forecast from Apr 20, 2019
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