Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Weather Synopsis for Thursday night through Monday
In the wake of a weak occluded front passing through the Cascades this afternoon, a Puget sound convergence zone should form this evening and be directed toward the central Cascades including Stevens and Snoqualmie Passes. This convergence band should shift to the south Thursday night toward Paradise/Crystal area before tapering off Friday morning. Besides the central and south Washington Cascades, light to moderate post-frontal showers will continue in earnest for the Mt. Hood area tonight.
Upper level ridging will build overhead on Friday, trapping leftover low clouds and moisture from about Snoqualmie Pass and south to Mt. Hood on the west side of the Cascades. Partial clearing for the north Cascades, Olympics and east slopes of the Cascades should allow cumulus clouds to bubble up but then flatten out in the afternoon creating mostly cloudy skies.
Dry conditions are likely Friday night ahead of the next Pacific frontal system which should arrive at daybreak on Saturday. Snow levels will drop with the onset of precipitation as the system works inland during the day with windy conditions developing as well.
Weather Forecast
Hurricane Ridge
| Thursday Night | Light rain and snow showers. |
| Friday | Partly cloudy in the morning becoming cloudy in the afternoon. |
Mt. Baker
| Thursday Night | Light rain and snow showers in the evening, becoming partly to mostly cloudy after midnight. |
| Friday | Partly cloudy in the morning becoming mostly cloudy in the afternoon. |
Washington Pass and Leavenworth
| Thursday Night | Scattered light rain and snow showers in the evening, becoming partly to mostly cloudy after midnight. |
| Friday | Partly cloudy in the morning becoming mostly cloudy in the afternoon. |
Stevens and Snoqualmie Pass
| Thursday Night | Light to occasionally moderate rain and snow showers, tapering down late tonight. Showers heaviest near a Puget Sound Convergence zone. Light to moderate west winds at Pass level. |
| Friday | Cloudy with a chance of light rain or snow in the morning becoming mostly cloudy in the afternoon. Light west wind in the Passes. |
Mt. Rainier, Crystal and White Pass
| Thursday Night | Light to occasionally moderate rain and snow showers, heaviest Paradise area. |
| Friday | Cloudy with periods of light rain or snow in the morning becoming mostly cloudy in the afternoon. |
Mt. Hood
| Thursday Night | Light to moderate rain and snow showers. Winds tapering down late. |
| Friday | Cloudy with a chance of light rain or snow in the morning becoming mostly cloudy in the afternoon. |
Issued: 2:33 PM PDT Thursday, April 11, 2019
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Thursday Evening | Snow Level | 5000' | 4000' | 4500' | 4500' | 5000' | 5000' | 5000' | 5000' |
| Thursday Night | Snow Level | 4000' | 3500' | 3500' | 4000' | 4500' | 4500' | 4500' | 4500' |
| Friday Morning | Snow Level | 4000' | 3500' | 3500' | 4000' | 4500' | 4500' | 4500' | 4500' |
| Friday Afternoon | Snow Level | 5000' | 5000' | 6000' | 6000' | 5000' | 5000' | 5500' | 6000' |
| Friday Evening | Freezing Level | 5500' | 4500' | 5000' | 5000' | 5000' | 5000' | 5500' | 6000' |
| Friday Night | Freezing Level | 6000' | 4000' | 4000' | 4000' | 4500' | 4500' | 5500' | 6000' |
| Saturday Morning | Snow Level | 3500' | 3500' | 4000' | 4000' | 4000' | 4000' | 4000' | 6000' |
| Saturday Afternoon | Snow Level | 4000' | 3500' | 4500' | 4500' | 4500' | 4500' | 4500' | 5000' |
| Hurricane Ridge | Elevation |
|---|---|
| Thursday Evening |
Snow Level 5000' |
| Thursday Night |
Snow Level 4000' |
| Friday Morning |
Snow Level 4000' |
| Friday Afternoon |
Snow Level 5000' |
| Friday Evening |
Freezing Level 5500' |
| Friday Night |
Freezing Level 6000' |
| Saturday Morning |
Snow Level 3500' |
| Saturday Afternoon |
Snow Level 4000' |
| Mt. Baker | Elevation |
|---|---|
| Thursday Evening |
Snow Level 4000' |
| Thursday Night |
Snow Level 3500' |
| Friday Morning |
Snow Level 3500' |
| Friday Afternoon |
Snow Level 5000' |
| Friday Evening |
Freezing Level 4500' |
| Friday Night |
Freezing Level 4000' |
| Saturday Morning |
Snow Level 3500' |
| Saturday Afternoon |
Snow Level 3500' |
| Washington Pass | Elevation |
|---|---|
| Thursday Evening |
Snow Level 4500' |
| Thursday Night |
Snow Level 3500' |
| Friday Morning |
Snow Level 3500' |
| Friday Afternoon |
Snow Level 6000' |
| Friday Evening |
Freezing Level 5000' |
| Friday Night |
Freezing Level 4000' |
| Saturday Morning |
Snow Level 4000' |
| Saturday Afternoon |
Snow Level 4500' |
| Leavenworth | Elevation |
|---|---|
| Thursday Evening |
Snow Level 4500' |
| Thursday Night |
Snow Level 4000' |
| Friday Morning |
Snow Level 4000' |
| Friday Afternoon |
Snow Level 6000' |
| Friday Evening |
Freezing Level 5000' |
| Friday Night |
Freezing Level 4000' |
| Saturday Morning |
Snow Level 4000' |
| Saturday Afternoon |
Snow Level 4500' |
| Stevens Pass | Elevation |
|---|---|
| Thursday Evening |
Snow Level 5000' |
| Thursday Night |
Snow Level 4500' |
| Friday Morning |
Snow Level 4500' |
| Friday Afternoon |
Snow Level 5000' |
| Friday Evening |
Freezing Level 5000' |
| Friday Night |
Freezing Level 4500' |
| Saturday Morning |
Snow Level 4000' |
| Saturday Afternoon |
Snow Level 4500' |
| Snoqualmie Pass | Elevation |
|---|---|
| Thursday Evening |
Snow Level 5000' |
| Thursday Night |
Snow Level 4500' |
| Friday Morning |
Snow Level 4500' |
| Friday Afternoon |
Snow Level 5000' |
| Friday Evening |
Freezing Level 5000' |
| Friday Night |
Freezing Level 4500' |
| Saturday Morning |
Snow Level 4000' |
| Saturday Afternoon |
Snow Level 4500' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Thursday Evening |
Snow Level 5000' |
| Thursday Night |
Snow Level 4500' |
| Friday Morning |
Snow Level 4500' |
| Friday Afternoon |
Snow Level 5500' |
| Friday Evening |
Freezing Level 5500' |
| Friday Night |
Freezing Level 5500' |
| Saturday Morning |
Snow Level 4000' |
| Saturday Afternoon |
Snow Level 4500' |
| Mt. Hood | Elevation |
|---|---|
| Thursday Evening |
Snow Level 5000' |
| Thursday Night |
Snow Level 4500' |
| Friday Morning |
Snow Level 4500' |
| Friday Afternoon |
Snow Level 6000' |
| Friday Evening |
Freezing Level 6000' |
| Friday Night |
Freezing Level 6000' |
| Saturday Morning |
Snow Level 6000' |
| Saturday Afternoon |
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 Night | Monday | Monday Night | Monday | |
|---|---|---|---|---|
| 4 pm - 4 am | 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | LT 0.25 | 0 | LT 0.10 | 0.25 |
| Mt Baker Ski Area | 0.25 | LT 0.10 | LT 0.10 | 0.50 |
| Washington Pass | LT 0.10 | 0 | 0 | LT 0.25 |
| Leavenworth | LT 0.10 | 0 | 0 | LT 0.10 |
| Stevens Pass | 0.25 - 0.50 | LT 0.10 | 0 | 0.25 |
| Snoqualmie Pass | 0.50 - 0.75 | LT 0.10 | 0 | 0.25 - 0.50 |
| Mission Ridge | LT 0.10 | 0 | 0 | LT 0.10 |
| Crystal Mt | 0.25 - 0.50 | LT 0.10 | 0 | LT 0.25 |
| Paradise | 0.75 | LT 0.10 | 0 | 0.50 |
| White Pass | 0.25 - 0.50 | LT 0.10 | 0 | LT 0.25 |
| Mt Hood Meadows | 0.75 -1.00 | LT 0.10 | 0 | 0.25 |
| Timberline | 1.00 | LT 0.25 | 0 | 0.25 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Thursday Night | LT 0.25 |
| Monday | 0 |
| Monday Night | LT 0.10 |
| Monday | 0.25 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Thursday Night | 0.25 |
| Monday | LT 0.10 |
| Monday Night | LT 0.10 |
| Monday | 0.50 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Thursday Night | LT 0.10 |
| Monday | 0 |
| Monday Night | 0 |
| Monday | LT 0.25 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Thursday Night | LT 0.10 |
| Monday | 0 |
| Monday Night | 0 |
| Monday | LT 0.10 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Thursday Night | 0.25 - 0.50 |
| Monday | LT 0.10 |
| Monday Night | 0 |
| Monday | 0.25 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Thursday Night | 0.50 - 0.75 |
| Monday | LT 0.10 |
| Monday Night | 0 |
| Monday | 0.25 - 0.50 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Thursday Night | LT 0.10 |
| Monday | 0 |
| Monday Night | 0 |
| Monday | LT 0.10 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Thursday Night | 0.25 - 0.50 |
| Monday | LT 0.10 |
| Monday Night | 0 |
| Monday | LT 0.25 |
| Paradise | Precipitation Forecast |
|---|---|
| Thursday Night | 0.75 |
| Monday | LT 0.10 |
| Monday Night | 0 |
| Monday | 0.50 |
| White Pass | Precipitation Forecast |
|---|---|
| Thursday Night | 0.25 - 0.50 |
| Monday | LT 0.10 |
| Monday Night | 0 |
| Monday | LT 0.25 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Thursday Night | 0.75 -1.00 |
| Monday | LT 0.10 |
| Monday Night | 0 |
| Monday | 0.25 |
| Timberline | Precipitation Forecast |
|---|---|
| Thursday Night | 1.00 |
| Monday | LT 0.25 |
| Monday Night | 0 |
| Monday | 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: 2:33 PM PDT Thursday, April 11, 2019
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Thursday Evening | WNW 5 - 15 | NW 0 - 10 | W 10 - 20 | W 10 - 20 | W 20 - 30 |
| Thursday Night | NW 5 - 15 | N 0 - 10 | NW 10 - 20 | NW 5 - 15 | WNW 15 - 25 |
| Friday Morning | VAR 0 - 10 | VAR 0 - 10 | WNW 5 - 15 | WNW 0 - 10 | WNW 10 - 20 |
| Friday Afternoon | SW 5 - 15 | SW 0 - 10 | W 5 - 15 | W 5 - 15 | W 10 - 20 |
| Hurricane Ridge | Elevation |
|---|---|
| Thursday Evening | WNW 5 - 15 |
| Thursday Night | NW 5 - 15 |
| Friday Morning | VAR 0 - 10 |
| Friday Afternoon | SW 5 - 15 |
| Mt. Baker | Elevation |
|---|---|
| Thursday Evening | NW 0 - 10 |
| Thursday Night | N 0 - 10 |
| Friday Morning | VAR 0 - 10 |
| Friday Afternoon | SW 0 - 10 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Thursday Evening | W 10 - 20 |
| Thursday Night | NW 10 - 20 |
| Friday Morning | WNW 5 - 15 |
| Friday Afternoon | W 5 - 15 |
| Mt. Rainier | Elevation |
|---|---|
| Thursday Evening | W 10 - 20 |
| Thursday Night | NW 5 - 15 |
| Friday Morning | WNW 0 - 10 |
| Friday Afternoon | W 5 - 15 |
| Mt. Hood | Elevation |
|---|---|
| Thursday Evening | W 20 - 30 |
| Thursday Night | WNW 15 - 25 |
| Friday Morning | WNW 10 - 20 |
| Friday Afternoon | W 10 - 20 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Thursday Evening | WNW 5 - 15 |
| Thursday Night | NW 5 - 15 |
| Friday Morning | VAR 0 - 10 |
| Friday Afternoon | SW 5 - 15 |
| Mt. Baker | Direction - Speed |
|---|---|
| Thursday Evening | NW 0 - 10 |
| Thursday Night | N 0 - 10 |
| Friday Morning | VAR 0 - 10 |
| Friday Afternoon | SW 0 - 10 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Thursday Evening | W 10 - 20 |
| Thursday Night | NW 10 - 20 |
| Friday Morning | WNW 5 - 15 |
| Friday Afternoon | W 5 - 15 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Thursday Evening | W 10 - 20 |
| Thursday Night | NW 5 - 15 |
| Friday Morning | WNW 0 - 10 |
| Friday Afternoon | W 5 - 15 |
| Mt. Hood | Direction - Speed |
|---|---|
| Thursday Evening | W 20 - 30 |
| Thursday Night | WNW 15 - 25 |
| Friday Morning | WNW 10 - 20 |
| Friday Afternoon | W 10 - 20 |
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 | |
|---|---|---|---|---|---|
| Thursday Evening | W 5 - 15 | W 5 - 15 | NW 20 - 30 | WNW 20 - 30 | WNW 25 - 35 |
| Thursday Night | NW 0 - 10 | NW 5 - 15 | NW 15 - 25 | NW 15 - 25 | NW 15 - 25 |
| Friday Morning | NW 5 - 15 | NW 0 - 10 | NW 15 - 25 | NW 15 - 25 | NW 15 - 25 |
| Friday Afternoon | W 10 - 20 | NW 5 - 15 | NW 15 - 25 | NW 15 - 25 | NW 15 - 25 |
| Mt. Baker | Direction - Speed |
|---|---|
| Thursday Evening | W 5 - 15 |
| Thursday Night | NW 0 - 10 |
| Friday Morning | NW 5 - 15 |
| Friday Afternoon | W 10 - 20 |
| Washington Pass | Direction - Speed |
|---|---|
| Thursday Evening | W 5 - 15 |
| Thursday Night | NW 5 - 15 |
| Friday Morning | NW 0 - 10 |
| Friday Afternoon | NW 5 - 15 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Thursday Evening | NW 20 - 30 |
| Thursday Night | NW 15 - 25 |
| Friday Morning | NW 15 - 25 |
| Friday Afternoon | NW 15 - 25 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Thursday Evening | WNW 20 - 30 |
| Thursday Night | NW 15 - 25 |
| Friday Morning | NW 15 - 25 |
| Friday Afternoon | NW 15 - 25 |
| Mt. Hood | Direction - Speed |
|---|---|
| Thursday Evening | WNW 25 - 35 |
| Thursday Night | NW 15 - 25 |
| Friday Morning | NW 15 - 25 |
| Friday Afternoon | NW 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.
Issued: 2:33 PM PDT Thursday, April 11, 2019
Extended Weather Synopsis for Monday night through Monday
Post-frontal shower and rapid cooling will make for significant snow shower accumulations along the west slopes of the Cascades and Mt. Hood Saturday night and Sunday with another convergence zone potentially racking up locally higher snowfall totals. Showers should continue on a cool and showery Sunday before tapering Sunday night. Another system will approach the area on Monday, tracking south toward the south Washington Cascades and Mt. Hood.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Saturday Night | Snow Level | 1500' - 2500' | 1500' - 2500' | 2000' - 3000' | |
| Sunday | Snow Level | 2500' - 3500' | 2500' - 3500' | 3000' - 4000' | |
| Sunday Night | Snow Level | 1500' - 2500' | 2000' - 3000' | 2500' - 3500' | |
| Monday | Snow Level | 3500' - 4500' | 3500' - 4500' | 4000' - 5000' |
| Mt. Baker | Elevation |
|---|---|
| Saturday Night |
Snow Level 1500' - 2500' |
| Sunday |
Snow Level 2500' - 3500' |
| Sunday Night |
Snow Level 1500' - 2500' |
| Monday |
Snow Level 3500' - 4500' |
| Snoqualmie Pass | Elevation |
|---|---|
| Saturday Night |
Snow Level 1500' - 2500' |
| Sunday |
Snow Level 2500' - 3500' |
| Sunday Night |
Snow Level 2000' - 3000' |
| Monday |
Snow Level 3500' - 4500' |
| Mt. Hood | Elevation |
|---|---|
| Saturday Night |
Snow Level 2000' - 3000' |
| Sunday |
Snow Level 3000' - 4000' |
| Sunday Night |
Snow Level 2500' - 3500' |
| Monday |
Snow Level 4000' - 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.
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 11, 2019
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