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Weather Synopsis for Tuesday & Tuesday
Moist W-SW flow will continue to deliver mainly rain to the Cascades and Olympics today and tonight with a relative lull this afternoon (but still not dry). Low level easterly low through the Cascade Passes early this morning is locally suppressing snow levels to around 6000 feet. Snow levels will rise to 7000 feet or higher for all areas this afternoon. SW winds at crest level will stay elevated through the short term.
Another wave moving along the frontal boundary will shift steadier and heavier precipitation back into the area overnight. One last slug of moisture associated with this frontal boundary will develop off the Oregon coast early Wednesday morning and finally shift the entire axis of precipitation east of the Cascades Wednesday evening.
A slow cooling trend should begin on Wednesday with accumulating snows likely in the alpine throughout the day. Snow levels will cool significantly Wednesday night as we transition to showers.
Weather Forecast
Washington Cascades near and west of the crest including Stevens, Snoqualmie, and White Passes
| Tuesday Morning |
Moderate to occasionally heavy rain and snow. Mild. |
| Tuesday Afternoon |
Cloudy with periods of light rain, occasionally moderate southern Cascade volcanoes. Mild. |
| Tuesday Night |
Moderate rain and snow. Mild. |
| Wednesday |
Light to moderate rain and snow, heaviest south Washington Cascades. Slow cooling trend. |
| Wednesday Night |
Light to occasionally moderate rain and snow showers. Cooler. |
Olympics
| Tuesday Morning |
Moderate rain and snow. Mild. |
| Tuesday Afternoon |
Cloudy with periods of light rain. Mild. |
| Tuesday Night |
Light to moderate rain and snow. Mild. |
| Wednesday |
Light rain and snow. Slow cooling trend. |
| Wednesday Night |
Light rain and snow showers. Cooler. |
East slopes of the Washington Cascades
| Tuesday Morning |
Light to moderate rain and snow. Warming trend. |
| Tuesday Afternoon |
Cloudy with periods of light rain. Mild. |
| Tuesday Night |
Light to occasionally moderate rain and snow. Mild. |
| Wednesday |
Light to occasionally moderate rain and snow, heaviest southeast Washington Cascades. |
| Wednesday Night |
Light rain and snow showers. Cooling trend. |
Mt. Hood Area
| Tuesday |
Cloudy with periods of light rain and snow. Mild. |
| Tuesday Night |
Light to occasionally moderate rain and snow. Mild. |
| Wednesday |
Moderate rain and snow. Slow cooling trend. |
| Wednesday Night |
Light to occasionally moderate rain and snow showers. Cooler. |
Issued: 7:30 AM PDT Tuesday, March 14, 2017
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Tuesday Morning | Snow Level * | 7000' | 5500' | 5000' | ' | ' | 6000' | ' | 8000' |
| Tuesday Afternoon - Tuesday Night | Snow Level | 7000' | 7000' | 7000' | ' | ' | 7500' | ' | 8000' |
| Tuesday Night - Wednesday Morning | Snow Level | 6000' | 6000' | 6500' | ' | ' | 6500' | ' | 7500' |
| Wednesday Afternoon | Snow Level | 4000' | 4500' | 5500' | ' | ' | 5500' | ' | 6000' |
| Wednesday Night | Snow Level | 3000' | 3000' | 3000' | ' | ' | 3000' | ' | 4000' |
| Hurricane Ridge | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 7000' (Easterly Flow *) |
| Tuesday Afternoon - Tuesday Night |
Snow Level 7000' |
| Tuesday Night - Wednesday Morning |
Snow Level 6000' |
| Wednesday Afternoon |
Snow Level 4000' |
| Wednesday Night |
Snow Level 3000' |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 5500' (Easterly Flow *) |
| Tuesday Afternoon - Tuesday Night |
Snow Level 7000' |
| Tuesday Night - Wednesday Morning |
Snow Level 6000' |
| Wednesday Afternoon |
Snow Level 4500' |
| Wednesday Night |
Snow Level 3000' |
| Washington Pass | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 5000' (Easterly Flow *) |
| Tuesday Afternoon - Tuesday Night |
Snow Level 7000' |
| Tuesday Night - Wednesday Morning |
Snow Level 6500' |
| Wednesday Afternoon |
Snow Level 5500' |
| Wednesday Night |
Snow Level 3000' |
| Leavenworth | Elevation |
|---|---|
| Tuesday Morning |
Snow Level ' (Easterly Flow *) |
| Tuesday Afternoon - Tuesday Night |
Snow Level ' |
| Tuesday Night - Wednesday Morning |
Snow Level ' |
| Wednesday Afternoon |
Snow Level ' |
| Wednesday Night |
Snow Level ' |
| Stevens Pass | Elevation |
|---|---|
| Tuesday Morning |
Snow Level ' (Easterly Flow *) |
| Tuesday Afternoon - Tuesday Night |
Snow Level ' |
| Tuesday Night - Wednesday Morning |
Snow Level ' |
| Wednesday Afternoon |
Snow Level ' |
| Wednesday Night |
Snow Level ' |
| Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 6000' (Easterly Flow *) |
| Tuesday Afternoon - Tuesday Night |
Snow Level 7500' |
| Tuesday Night - Wednesday Morning |
Snow Level 6500' |
| Wednesday Afternoon |
Snow Level 5500' |
| Wednesday Night |
Snow Level 3000' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Tuesday Morning |
Snow Level ' (Easterly Flow *) |
| Tuesday Afternoon - Tuesday Night |
Snow Level ' |
| Tuesday Night - Wednesday Morning |
Snow Level ' |
| Wednesday Afternoon |
Snow Level ' |
| Wednesday Night |
Snow Level ' |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 8000' (Easterly Flow *) |
| Tuesday Afternoon - Tuesday Night |
Snow Level 8000' |
| Tuesday Night - Wednesday Morning |
Snow Level 7500' |
| Wednesday Afternoon |
Snow Level 6000' |
| Wednesday 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
| Tuesday | Tuesday | |
|---|---|---|
| Hurricane Ridge | 0.50 - 0.75 | LT 0.25 |
| Mt Baker Ski Area | 1.00 - 1.50 | 0.75 - 1.00 |
| Washington Pass | 0.75 - 1.00 | 0 - 0.50 |
| Stevens Pass | 1.00 - 1.50 | 0.75 - 1.00 |
| Snoqualmie Pass | 0 - 1.50 | 0 - 1.00 |
| Mission Ridge | 0.25 - 0.50 | LT 0.25 |
| Crystal Mt | 1.00 - 1.50 | 0.75 - 1.00 |
| Paradise | 2.00 - 3.00 | 0 - 1.50 |
| White Pass | 0 - 2.00 | 0 - 1.00 |
| Mt Hood Meadows | 0 - 1.00 | 0 - 1.50 |
| Timberline | 1.00 - 1.50 | 0 - 2.00 |
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: 7:30 AM PDT Tuesday, March 14, 2017
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Tuesday Morning | S 20 - 30 | SE 10 - 20 | SE 10 - 20 | --- - | SW 25 - 35 |
| Tuesday Afternoon | SSW 20 - 30 | SSW 15 - 30 | SW 20 - 30 | --- - | SW 25 - 35 |
| Tuesday Night | SW 15 - 25 | SW 20 - 30 | SW 10 - 20 | --- - | SW 15 - 25 |
| Wednesday Morning | S 10 - 20 | SW 5 - 15 | WSW 5 - 15 | --- - | SW 15 - 25 |
| Wednesday Afternoon - Wednesday Night | SW 5 - 15 | SW 10 - 20 | WSW 5 - 15 | --- - | SW 25 - 35 |
| Hurricane Ridge | Elevation |
|---|---|
| Tuesday Morning | S 20 - 30 |
| Tuesday Afternoon | SSW 20 - 30 |
| Tuesday Night | SW 15 - 25 |
| Wednesday Morning | S 10 - 20 |
| Wednesday Afternoon - Wednesday Night | SW 5 - 15 |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Morning | SE 10 - 20 |
| Tuesday Afternoon | SSW 15 - 30 |
| Tuesday Night | SW 20 - 30 |
| Wednesday Morning | SW 5 - 15 |
| Wednesday Afternoon - Wednesday Night | SW 10 - 20 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Morning | SE 10 - 20 |
| Tuesday Afternoon | SW 20 - 30 |
| Tuesday Night | SW 10 - 20 |
| Wednesday Morning | WSW 5 - 15 |
| Wednesday Afternoon - Wednesday Night | WSW 5 - 15 |
| Mt. Rainier | Elevation |
|---|---|
| Tuesday Morning | --- - |
| Tuesday Afternoon | --- - |
| Tuesday Night | --- - |
| Wednesday Morning | --- - |
| Wednesday Afternoon - Wednesday Night | --- - |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Morning | SW 25 - 35 |
| Tuesday Afternoon | SW 25 - 35 |
| Tuesday Night | SW 15 - 25 |
| Wednesday Morning | SW 15 - 25 |
| Wednesday Afternoon - Wednesday Night | SW 25 - 35 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Tuesday Morning | S 20 - 30 |
| Tuesday Afternoon | SSW 20 - 30 |
| Tuesday Night | SW 15 - 25 |
| Wednesday Morning | S 10 - 20 |
| Wednesday Afternoon - Wednesday Night | SW 5 - 15 |
| Mt. Baker | Direction - Speed |
|---|---|
| Tuesday Morning | SE 10 - 20 |
| Tuesday Afternoon | SSW 15 - 30 |
| Tuesday Night | SW 20 - 30 |
| Wednesday Morning | SW 5 - 15 |
| Wednesday Afternoon - Wednesday Night | SW 10 - 20 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Tuesday Morning | SE 10 - 20 |
| Tuesday Afternoon | SW 20 - 30 |
| Tuesday Night | SW 10 - 20 |
| Wednesday Morning | WSW 5 - 15 |
| Wednesday Afternoon - Wednesday Night | WSW 5 - 15 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Tuesday Morning | --- - |
| Tuesday Afternoon | --- - |
| Tuesday Night | --- - |
| Wednesday Morning | --- - |
| Wednesday Afternoon - Wednesday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Tuesday Morning | SW 25 - 35 |
| Tuesday Afternoon | SW 25 - 35 |
| Tuesday Night | SW 15 - 25 |
| Wednesday Morning | SW 15 - 25 |
| Wednesday Afternoon - Wednesday Night | SW 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 | |
|---|---|---|---|---|---|
| Tuesday Morning | SW 40 - 50 | SW 50 - 60 | SW 55 - 65 | --- - | SW 50 - 60 |
| Tuesday Afternoon | SW 35 - 45 | SW 40 - 50 | SW 35 - 45 | --- - | SW 40 - 50 |
| Tuesday Night | SW 30 - 40 | SW 30 - 40 | SW 30 - 40 | --- - | SW 45 - 55 |
| Wednesday | SW 25 - 35 | SW 25 - 35 | SW 25 - 35 | --- - | SW 40 - 50 |
| Wednesday Night | SW 20 - 30 | SW 30 - 40 | SW 30 - 40 | --- - | SW 45 - 55 |
| Mt. Baker | Direction - Speed |
|---|---|
| Tuesday Morning | SW 40 - 50 |
| Tuesday Afternoon | SW 35 - 45 |
| Tuesday Night | SW 30 - 40 |
| Wednesday | SW 25 - 35 |
| Wednesday Night | SW 20 - 30 |
| Washington Pass | Direction - Speed |
|---|---|
| Tuesday Morning | SW 50 - 60 |
| Tuesday Afternoon | SW 40 - 50 |
| Tuesday Night | SW 30 - 40 |
| Wednesday | SW 25 - 35 |
| Wednesday Night | SW 30 - 40 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Tuesday Morning | SW 55 - 65 |
| Tuesday Afternoon | SW 35 - 45 |
| Tuesday Night | SW 30 - 40 |
| Wednesday | SW 25 - 35 |
| Wednesday Night | SW 30 - 40 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Tuesday Morning | --- - |
| Tuesday Afternoon | --- - |
| Tuesday Night | --- - |
| Wednesday | --- - |
| Wednesday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Tuesday Morning | SW 50 - 60 |
| Tuesday Afternoon | SW 40 - 50 |
| Tuesday Night | SW 45 - 55 |
| Wednesday | SW 40 - 50 |
| Wednesday Night | SW 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 13, 2017
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