Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Weather Synopsis for Tuesday night through Sunday
A weak front is causing some light showers this afternoon but has mostly resulted in an increase in cloud cover across much of the region. Scattered light showers should dissipate overnight along the west slopes of the Cascades. Strong winds seen at Cascade crest-level and more generally in the Mt. Hood area and along the east slopes of the Cascades south of Hwy 2 will begin to back off later tonight as a weak upper level ridge moves over the area.
Upper level ridging will once again cause temperature inversions in some, but not all areas as warmer air offshore attempts to work its way inland on Wednesday. Light winds and a still weak February sun will not help mix the lower atmosphere. Above freezing temperatures are most likely to affect elevations above 6000' for the south Washington Cascades and Mt. Hood area on Wednesday. Low level clouds along the west slopes and Passes should give way to sun by Wednesday afternoon, more so for the south Cascades and less so in the north. The Mt. Hood area and along the east slopes of the Cascades should see more sun in general on Wednesday.
Weather Forecast
Hurricane Ridge
| Tuesday Night | Mostly cloudy with a slight chance of showers. |
| Wednesday | Mostly cloudy in the morning becoming partly cloudy to mostly cloudy in the afternoon. |
Mt. Baker
| Tuesday Night | Mostly cloudy with a chance of showers. |
| Wednesday | Mostly cloudy in the morning becoming partly cloudy to mostly cloudy in the afternoon. |
Washington Pass and Leavenworth
| Tuesday Night | Partly to mostly cloudy. A slight chance of showers near Washington Pass. Strong west winds easing overnight. |
| Wednesday | Partly cloudy in the morning becoming partly to mostly sunny in the afternoon. |
Stevens and Snoqualmie Pass
| Tuesday Night | Mostly cloudy with a chance of showers. Strong alpine winds easing overnight. |
| Wednesday | Mostly cloudy in the morning becoming partly sunny in the afternoon. |
Mt. Rainier, Crystal and White Pass
| Tuesday Night | Mostly cloudy with a chance of showers. Strong alpine winds easing overnight. |
| Wednesday | Mostly cloudy in the morning becoming partly to mostly sunny in the afternoon. Warmer upper slopes, cooler lower slopes. |
Mt. Hood
| Tuesday Night | Mostly cloudy with a chance of showers. Strong to extreme winds easing overnight. |
| Wednesday | Mostly cloudy in the morning becoming mostly sunny in the afternoon. Warmer upper slopes, cooler lower slopes. |
Issued: 2:05 PM PST Tuesday, February 11, 2020
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Tuesday Evening | Snow Level | 3500' | 2500' | 2500' | 4000' | 3500' | 3500' | 4000' | 4500' |
| Tuesday Night | Snow Level | 3000' | 2000' | 1500' | 2000' | 2000' | 3000' | 2000' | 4000' |
| Wednesday Morning | Freezing Level | 2500' | 2000' | 1500' | 2000' | 2000' | 3000' | 2500' | 4000' |
| Wednesday Afternoon | Freezing Level | 4500' | 3500' | 4000' | 4000' | 4000' | 4000' | 8000' | 9000' |
| Wednesday Evening | Freezing Level | 5500' | 3000' | 2000' | 4000' | 3000' | 3500' | 6500' | 9000' |
| Wednesday Night | Freezing Level | 5000' | 3000' | 2000' | 4000' | 3000' | 3500' | 6500' | 9000' |
| Thursday Morning | Snow Level | 4000' | 2000' | 2000' | 2500' | 2500' | 2500' | 3000' | 6000' |
| Thursday Afternoon | Snow Level | 3000' | 2500' | 3500' | 3500' | 3000' | 3000' | 3500' | 5000' |
| Hurricane Ridge | Elevation |
|---|---|
| Tuesday Evening |
Snow Level 3500' |
| Tuesday Night |
Snow Level 3000' |
| Wednesday Morning |
Freezing Level 2500' |
| Wednesday Afternoon |
Freezing Level 4500' |
| Wednesday Evening |
Freezing Level 5500' |
| Wednesday Night |
Freezing Level 5000' |
| Thursday Morning |
Snow Level 4000' |
| Thursday Afternoon |
Snow Level 3000' |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Evening |
Snow Level 2500' |
| Tuesday Night |
Snow Level 2000' |
| Wednesday Morning |
Freezing Level 2000' |
| Wednesday Afternoon |
Freezing Level 3500' |
| Wednesday Evening |
Freezing Level 3000' |
| Wednesday Night |
Freezing Level 3000' |
| Thursday Morning |
Snow Level 2000' |
| Thursday Afternoon |
Snow Level 2500' |
| Washington Pass | Elevation |
|---|---|
| Tuesday Evening |
Snow Level 2500' |
| Tuesday Night |
Snow Level 1500' |
| Wednesday Morning |
Freezing Level 1500' |
| Wednesday Afternoon |
Freezing Level 4000' |
| Wednesday Evening |
Freezing Level 2000' |
| Wednesday Night |
Freezing Level 2000' |
| Thursday Morning |
Snow Level 2000' |
| Thursday Afternoon |
Snow Level 3500' |
| Leavenworth | Elevation |
|---|---|
| Tuesday Evening |
Snow Level 4000' |
| Tuesday Night |
Snow Level 2000' |
| Wednesday Morning |
Freezing Level 2000' |
| Wednesday Afternoon |
Freezing Level 4000' |
| Wednesday Evening |
Freezing Level 4000' |
| Wednesday Night |
Freezing Level 4000' |
| Thursday Morning |
Snow Level 2500' |
| Thursday Afternoon |
Snow Level 3500' |
| Stevens Pass | Elevation |
|---|---|
| Tuesday Evening |
Snow Level 3500' |
| Tuesday Night |
Snow Level 2000' |
| Wednesday Morning |
Freezing Level 2000' |
| Wednesday Afternoon |
Freezing Level 4000' |
| Wednesday Evening |
Freezing Level 3000' |
| Wednesday Night |
Freezing Level 3000' |
| Thursday Morning |
Snow Level 2500' |
| Thursday Afternoon |
Snow Level 3000' |
| Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Evening |
Snow Level 3500' |
| Tuesday Night |
Snow Level 3000' |
| Wednesday Morning |
Freezing Level 3000' |
| Wednesday Afternoon |
Freezing Level 4000' |
| Wednesday Evening |
Freezing Level 3500' |
| Wednesday Night |
Freezing Level 3500' |
| Thursday Morning |
Snow Level 2500' |
| Thursday Afternoon |
Snow Level 3000' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Tuesday Evening |
Snow Level 4000' |
| Tuesday Night |
Snow Level 2000' |
| Wednesday Morning |
Freezing Level 2500' |
| Wednesday Afternoon |
Freezing Level 8000' |
| Wednesday Evening |
Freezing Level 6500' |
| Wednesday Night |
Freezing Level 6500' |
| Thursday Morning |
Snow Level 3000' |
| Thursday Afternoon |
Snow Level 3500' |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Evening |
Snow Level 4500' |
| Tuesday Night |
Snow Level 4000' |
| Wednesday Morning |
Freezing Level 4000' |
| Wednesday Afternoon |
Freezing Level 9000' |
| Wednesday Evening |
Freezing Level 9000' |
| Wednesday Night |
Freezing Level 9000' |
| Thursday Morning |
Snow Level 6000' |
| Thursday 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
| Tuesday Night | Sunday | Sunday Night | Sunday | |
|---|---|---|---|---|
| 4 pm - 4 am | 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | 0 | 0 | 0 | LT 0.25 |
| Mt Baker Ski Area | LT 0.10 | 0 | 0 | 0.50 |
| Washington Pass | 0 | 0 | 0 | LT 0.25 |
| Leavenworth | 0 | 0 | 0 | 0 |
| Stevens Pass | LT 0.10 | 0 | 0 | LT 0.25 |
| Snoqualmie Pass | LT 0.10 | 0 | 0 | LT 0.25 |
| Mission Ridge | 0 | 0 | 0 | LT 0.10 |
| Crystal Mt | LT 0.10 | 0 | 0 | LT 0.10 |
| Paradise | LT 0.10 | 0 | 0 | 0.25 |
| White Pass | LT 0.10 | 0 | 0 | LT 0.10 |
| Mt Hood Meadows | LT 0.10 | 0 | 0 | LT 0.10 |
| Timberline | LT 0.10 | 0 | 0 | LT 0.10 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Tuesday Night | 0 |
| Sunday | 0 |
| Sunday Night | 0 |
| Sunday | LT 0.25 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Tuesday Night | LT 0.10 |
| Sunday | 0 |
| Sunday Night | 0 |
| Sunday | 0.50 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Tuesday Night | 0 |
| Sunday | 0 |
| Sunday Night | 0 |
| Sunday | LT 0.25 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Tuesday Night | 0 |
| Sunday | 0 |
| Sunday Night | 0 |
| Sunday | 0 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Tuesday Night | LT 0.10 |
| Sunday | 0 |
| Sunday Night | 0 |
| Sunday | LT 0.25 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Tuesday Night | LT 0.10 |
| Sunday | 0 |
| Sunday Night | 0 |
| Sunday | LT 0.25 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Tuesday Night | 0 |
| Sunday | 0 |
| Sunday Night | 0 |
| Sunday | LT 0.10 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Tuesday Night | LT 0.10 |
| Sunday | 0 |
| Sunday Night | 0 |
| Sunday | LT 0.10 |
| Paradise | Precipitation Forecast |
|---|---|
| Tuesday Night | LT 0.10 |
| Sunday | 0 |
| Sunday Night | 0 |
| Sunday | 0.25 |
| White Pass | Precipitation Forecast |
|---|---|
| Tuesday Night | LT 0.10 |
| Sunday | 0 |
| Sunday Night | 0 |
| Sunday | LT 0.10 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Tuesday Night | LT 0.10 |
| Sunday | 0 |
| Sunday Night | 0 |
| Sunday | LT 0.10 |
| Timberline | Precipitation Forecast |
|---|---|
| Tuesday Night | LT 0.10 |
| Sunday | 0 |
| Sunday Night | 0 |
| Sunday | LT 0.10 |
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: 2:05 PM PST Tuesday, February 11, 2020
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Tuesday Evening | W 0 - 10 | W 0 - 10 | WNW 10 - 20 | WNW 10 - 20 | WNW 15 - 25 |
| Tuesday Night | VAR 0 - 10 | VAR 0 - 10 | WNW 5 - 15 | W 0 - 10 | WNW 10 - 20 |
| Wednesday Morning | VAR 0 - 10 | SW 0 - 10 | WNW 0 - 10 | NW 0 - 10 | W 0 - 10 |
| Wednesday Afternoon | W 0 - 10 | SW 0 - 10 | W 0 - 10 | NW 0 - 10 | W 0 - 10 |
| Hurricane Ridge | Elevation |
|---|---|
| Tuesday Evening | W 0 - 10 |
| Tuesday Night | VAR 0 - 10 |
| Wednesday Morning | VAR 0 - 10 |
| Wednesday Afternoon | W 0 - 10 |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Evening | W 0 - 10 |
| Tuesday Night | VAR 0 - 10 |
| Wednesday Morning | SW 0 - 10 |
| Wednesday Afternoon | SW 0 - 10 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Evening | WNW 10 - 20 |
| Tuesday Night | WNW 5 - 15 |
| Wednesday Morning | WNW 0 - 10 |
| Wednesday Afternoon | W 0 - 10 |
| Mt. Rainier | Elevation |
|---|---|
| Tuesday Evening | WNW 10 - 20 |
| Tuesday Night | W 0 - 10 |
| Wednesday Morning | NW 0 - 10 |
| Wednesday Afternoon | NW 0 - 10 |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Evening | WNW 15 - 25 |
| Tuesday Night | WNW 10 - 20 |
| Wednesday Morning | W 0 - 10 |
| Wednesday Afternoon | W 0 - 10 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Tuesday Evening | W 0 - 10 |
| Tuesday Night | VAR 0 - 10 |
| Wednesday Morning | VAR 0 - 10 |
| Wednesday Afternoon | W 0 - 10 |
| Mt. Baker | Direction - Speed |
|---|---|
| Tuesday Evening | W 0 - 10 |
| Tuesday Night | VAR 0 - 10 |
| Wednesday Morning | SW 0 - 10 |
| Wednesday Afternoon | SW 0 - 10 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Tuesday Evening | WNW 10 - 20 |
| Tuesday Night | WNW 5 - 15 |
| Wednesday Morning | WNW 0 - 10 |
| Wednesday Afternoon | W 0 - 10 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Tuesday Evening | WNW 10 - 20 |
| Tuesday Night | W 0 - 10 |
| Wednesday Morning | NW 0 - 10 |
| Wednesday Afternoon | NW 0 - 10 |
| Mt. Hood | Direction - Speed |
|---|---|
| Tuesday Evening | WNW 15 - 25 |
| Tuesday Night | WNW 10 - 20 |
| Wednesday Morning | W 0 - 10 |
| Wednesday Afternoon | W 0 - 10 |
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 | |
|---|---|---|---|---|---|
| Tuesday Evening | NW 15 - 25 | NW 25 - 35 | NW 45 - 55 | NW 40 - 50 | NW 50 - 60 |
| Tuesday Night | NW 15 - 25 | NW 15 - 25 | NW 25 - 35 | NW 30 - 40 | NW 30 - 40 |
| Wednesday Morning | NW 15 - 25 | NW 15 - 25 | NNW 20 - 30 | NW 15 - 25 | NNW 20 - 30 |
| Wednesday Afternoon | NW 20 - 30 | WNW 10 - 20 | NW 20 - 30 | NW 15 - 25 | NNW 15 - 25 |
| Mt. Baker | Direction - Speed |
|---|---|
| Tuesday Evening | NW 15 - 25 |
| Tuesday Night | NW 15 - 25 |
| Wednesday Morning | NW 15 - 25 |
| Wednesday Afternoon | NW 20 - 30 |
| Washington Pass | Direction - Speed |
|---|---|
| Tuesday Evening | NW 25 - 35 |
| Tuesday Night | NW 15 - 25 |
| Wednesday Morning | NW 15 - 25 |
| Wednesday Afternoon | WNW 10 - 20 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Tuesday Evening | NW 45 - 55 |
| Tuesday Night | NW 25 - 35 |
| Wednesday Morning | NNW 20 - 30 |
| Wednesday Afternoon | NW 20 - 30 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Tuesday Evening | NW 40 - 50 |
| Tuesday Night | NW 30 - 40 |
| Wednesday Morning | NW 15 - 25 |
| Wednesday Afternoon | NW 15 - 25 |
| Mt. Hood | Direction - Speed |
|---|---|
| Tuesday Evening | NW 50 - 60 |
| Tuesday Night | NW 30 - 40 |
| Wednesday Morning | NNW 20 - 30 |
| Wednesday Afternoon | NNW 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: 2:05 PM PST Tuesday, February 11, 2020
Extended Weather Synopsis for Sunday night through Sunday
A Puget Sound Convergence Zone may form quickly Thursday evening behind the cold front but it will be the trailing upper level shortwave that really invigorates showers along the west slopes of the Cascades and to a lesser extent the Olympics and Mt. Hood area. Showers and cool snow levels should pile up moderate new snow accumulations for these areas through mid-day Friday. Showers should become lighter and more scattered in the afternoon.
The weather pattern is active over the holiday weekend but the storm track is far from settled. It's unclear if a developing low pressure system spreads warm frontal precipitation inland Friday night and Saturday, or if the low curls toward Vancouver Island Saturday, waiting to deliver significant precipitation until Saturday night. Stay tuned as we get closer to the weekend.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Thursday Night | Snow Level | 1500' - 2500' | 2000' - 3000' | 3000' - 4000' | |
| Friday | Snow Level | 1500' - 2500' | 1500' - 2500' | 2000' - 3000' | |
| Friday Night | Snow Level | 2000' - 3000' | 1500' - 2500' | 1500' - 2500' | |
| Saturday | Snow Level | 2000' - 3000' | 2500' - 3500' | 2500' - 3500' |
| Mt. Baker | Elevation |
|---|---|
| Thursday Night |
Snow Level 1500' - 2500' |
| Friday |
Snow Level 1500' - 2500' |
| Friday Night |
Snow Level 2000' - 3000' |
| Saturday |
Snow Level 2000' - 3000' |
| Snoqualmie Pass | Elevation |
|---|---|
| Thursday Night |
Snow Level 2000' - 3000' |
| Friday |
Snow Level 1500' - 2500' |
| Friday Night |
Snow Level 1500' - 2500' |
| Saturday |
Snow Level 2500' - 3500' |
| Mt. Hood | Elevation |
|---|---|
| Thursday Night |
Snow Level 3000' - 4000' |
| Friday |
Snow Level 2000' - 3000' |
| Friday Night |
Snow Level 1500' - 2500' |
| Saturday |
Snow Level 2500' - 3500' |
* 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 Feb 11, 2020
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