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 & Sunday
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 flow through the Cascade Passes early this morning locally suppressed snow levels to around 6000 feet. Snow levels have since risen to 7000 feet or higher for all areas this afternoon. SW winds at crest level will stay elevated throughout the short term.
Another wave currently offshore and 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
Olympics
| 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. |
Washington Cascades near and west of the crest including Stevens, Snoqualmie, and White Passes
| 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. |
East slopes of the Washington Cascades
| 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 |
Light to moderate rain and snow. Slow cooling trend. |
| Wednesday Night |
Light to occasionally moderate rain and snow showers. Cooler. |
Issued: 2:33 PM 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 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 | 4500' | 4500' | 5500' | ' | ' | 5500' | ' | 6000' |
| Wednesday Night | Snow Level | 3000' | 3000' | 3000' | ' | ' | 3000' | ' | 4000' |
| Hurricane Ridge | Elevation |
|---|---|
| Tuesday Afternoon - Tuesday Night |
Snow Level 7000' |
| Tuesday Night - Wednesday Morning |
Snow Level 6000' |
| Wednesday Afternoon |
Snow Level 4500' |
| Wednesday Night |
Snow Level 3000' |
| Mt. Baker | Elevation |
|---|---|
| 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 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 Afternoon - Tuesday Night |
Snow Level ' |
| Tuesday Night - Wednesday Morning |
Snow Level ' |
| Wednesday Afternoon |
Snow Level ' |
| Wednesday Night |
Snow Level ' |
| Stevens Pass | Elevation |
|---|---|
| Tuesday Afternoon - Tuesday Night |
Snow Level ' |
| Tuesday Night - Wednesday Morning |
Snow Level ' |
| Wednesday Afternoon |
Snow Level ' |
| Wednesday Night |
Snow Level ' |
| Snoqualmie Pass | Elevation |
|---|---|
| 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 Afternoon - Tuesday Night |
Snow Level ' |
| Tuesday Night - Wednesday Morning |
Snow Level ' |
| Wednesday Afternoon |
Snow Level ' |
| Wednesday Night |
Snow Level ' |
| Mt. Hood | Elevation |
|---|---|
| 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
| Sunday | Sunday | |
|---|---|---|
| Hurricane Ridge | 0.50 - 0.75 | LT 0.25 |
| Mt Baker Ski Area | 0 - 2.00 | 0.75 - 1.00 |
| Washington Pass | 0 - 1.00 | 0 - 0.50 |
| Stevens Pass | 1.00 - 1.50 | 0 - 1.00 |
| Snoqualmie Pass | 0 - 1.50 | 1.00 - 1.50 |
| 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 - 0.50 | 0 - 1.00 |
| Timberline | 0.50 - 0.75 | 0 - 1.50 |
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 Tuesday, March 14, 2017
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Tuesday Afternoon | SSW 15 - 25 | SSW 25 - 35 | 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 20 - 30 |
| Wednesday Afternoon | SW 5 - 15 | SW 10 - 20 | WSW 5 - 15 | --- - | SW 25 - 35 |
| Wednesday Night | WSW 15 - 25 | WSW 15 - 25 | WSW 20 - 30 | --- - | WSW 25 - 35 |
| Hurricane Ridge | Elevation |
|---|---|
| Tuesday Afternoon | SSW 15 - 25 |
| Tuesday Night | SW 15 - 25 |
| Wednesday Morning | S 10 - 20 |
| Wednesday Afternoon | SW 5 - 15 |
| Wednesday Night | WSW 15 - 25 |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Afternoon | SSW 25 - 35 |
| Tuesday Night | SW 20 - 30 |
| Wednesday Morning | SW 5 - 15 |
| Wednesday Afternoon | SW 10 - 20 |
| Wednesday Night | WSW 15 - 25 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Afternoon | SW 20 - 30 |
| Tuesday Night | SW 10 - 20 |
| Wednesday Morning | WSW 5 - 15 |
| Wednesday Afternoon | WSW 5 - 15 |
| Wednesday Night | WSW 20 - 30 |
| Mt. Rainier | Elevation |
|---|---|
| Tuesday Afternoon | --- - |
| Tuesday Night | --- - |
| Wednesday Morning | --- - |
| Wednesday Afternoon | --- - |
| Wednesday Night | --- - |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Afternoon | SW 25 - 35 |
| Tuesday Night | SW 15 - 25 |
| Wednesday Morning | SW 20 - 30 |
| Wednesday Afternoon | SW 25 - 35 |
| Wednesday Night | WSW 25 - 35 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Tuesday Afternoon | SSW 15 - 25 |
| Tuesday Night | SW 15 - 25 |
| Wednesday Morning | S 10 - 20 |
| Wednesday Afternoon | SW 5 - 15 |
| Wednesday Night | WSW 15 - 25 |
| Mt. Baker | Direction - Speed |
|---|---|
| Tuesday Afternoon | SSW 25 - 35 |
| Tuesday Night | SW 20 - 30 |
| Wednesday Morning | SW 5 - 15 |
| Wednesday Afternoon | SW 10 - 20 |
| Wednesday Night | WSW 15 - 25 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Tuesday Afternoon | SW 20 - 30 |
| Tuesday Night | SW 10 - 20 |
| Wednesday Morning | WSW 5 - 15 |
| Wednesday Afternoon | WSW 5 - 15 |
| Wednesday Night | WSW 20 - 30 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Tuesday Afternoon | --- - |
| Tuesday Night | --- - |
| Wednesday Morning | --- - |
| Wednesday Afternoon | --- - |
| Wednesday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Tuesday Afternoon | SW 25 - 35 |
| Tuesday Night | SW 15 - 25 |
| Wednesday Morning | SW 20 - 30 |
| Wednesday Afternoon | SW 25 - 35 |
| Wednesday Night | WSW 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 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 Afternoon | SW 35 - 45 |
| Tuesday Night | SW 30 - 40 |
| Wednesday | SW 25 - 35 |
| Wednesday Night | SW 20 - 30 |
| Washington Pass | Direction - Speed |
|---|---|
| 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 Afternoon | SW 35 - 45 |
| Tuesday Night | SW 30 - 40 |
| Wednesday | SW 25 - 35 |
| Wednesday Night | SW 30 - 40 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Tuesday Afternoon | --- - |
| Tuesday Night | --- - |
| Wednesday | --- - |
| Wednesday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| 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.
Issued: 2:33 PM PDT Tuesday, March 14, 2017
Extended Weather Synopsis for Sunday night through Sunday
A weak front will brush the area on Thursday, mainly clipping the Olympics and north Cascades with light rain and snow and with spottier precipitation further south in the Washington Cascades. Mt. Hood will be on the southern periphery of the clouds and may squeak out some sunshine on Thursday. The front should lift north Thursday night leading to an overall drying and partial clearing trend.
A developing low pressure system will quickly advance from off the Oregon Coast to the NW tip of the Olympic Peninsula Friday night. The details will surely change but the track and strength of this system look eerily similar to the low pressure system from last Thursday and Thursday night. The precipitation shield should quickly spread over the area Friday afternoon with a quick ramp up in snow levels, precipitation intensity and winds Friday night into Saturday morning. The trailing cold front should sweep through during the day on Saturday.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Thursday - Thursday Night | Snow Level | 2000' - 3000' | 2500' - 3500' | 3000' - 4000' | |
| Friday | Snow Level | 3000' - 4000' | 3000' - 4000' | 5500' - 6500' | |
| Saturday Afternoon | Snow Level | 3000' - 4000' | 3000' - 4000' | 3500' - 4500' | |
| Friday Night - Saturday Morning | Snow Level | 6000' - 7000' | 6000' - 7000' | 7000' - 8000' | * |
| Mt. Baker | Elevation |
|---|---|
| Thursday - Thursday Night |
Snow Level 2000' - 3000' |
| Friday |
Snow Level 3000' - 4000' |
| Saturday Afternoon |
Snow Level 3000' - 4000' |
| Friday Night - Saturday Morning |
Snow Level 6000' - 7000' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Thursday - Thursday Night |
Snow Level 2500' - 3500' |
| Friday |
Snow Level 3000' - 4000' |
| Saturday Afternoon |
Snow Level 3000' - 4000' |
| Friday Night - Saturday Morning |
Snow Level 6000' - 7000' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Thursday - Thursday Night |
Snow Level 3000' - 4000' |
| Friday |
Snow Level 5500' - 6500' |
| Saturday Afternoon |
Snow Level 3500' - 4500' |
| Friday Night - Saturday Morning |
Snow Level 7000' - 8000' (Easterly Flow *) |
* 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 Mar 14, 2017
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