Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Weather Synopsis for Wednesday & Tuesday
We're expecting relatively quiet weather in the short term as we enter a drier period between storms.
A weak front passed through the Cascades around 4 AM. A modest convergence zone formed instantly behind the front and should continue to shift southward from Stevens Pass to Snoqualmie between 7 and 10 AM, but it shouldn't bring more than an inch or so of snow above 3500 ft. Scattered very light snow showers continue and should gradually end in most locations by late morning. Snow levels should lower slightly to near Snoqualmie Pass level behind the front as cooler air pushes in from the WNW. Clouds should continue to give way to sunshine in many areas with clouds lingering longer west of the Cascade Crest and particularly in the central Washington Cascades.
Alpine winds in the strong range, particularly east of the Cascade Crest, should gradually decrease into the moderate range by the afternoon.
Flow switches from W to WNW as an offshore ridge builds with a trough to our east. This drying upper-level flow pattern continues to push trapped low-level moisture into the region, banking low-level clouds against the Cascades as very weak perturbations of the flow pattern produce some periods of very light snow showers or very weak convergence through Thursday. Most areas will experience a mix of clouds and sunshine west of the Cascade Crest with sunshine further east.
Weather Forecast
Hurricane Ridge
| Wednesday | Partly cloudy skies early giving way to sunshine by mid-morning. Cooler. |
Mt. Baker
| Wednesday | Cloudy with light snow showers, then becoming mostly cloudy in the afternoon with isolated snow flurries and some sun breaks. Cooler. |
Washington Pass and Leavenworth
| Wednesday | Mostly cloudy skies with snow flurries possible near the Cascade Crest; mostly sunny skies further east. Strong alpine winds in the morning decreasing to moderate by afternoon. |
Stevens and Snoqualmie Pass
| Wednesday | A convergence zone continues to shift southward from near Stevens Pass at 7 AM toward Snoqualmie. Snow levels drop from 3500 ft to 3000 ft by the late morning hours (probably lowering to pass level after convergence moves through). Light to moderate W winds through the Passes. |
Mt. Rainier, Crystal and White Pass
| Wednesday | Very light snow showers should taper through the morning hours with increasing sun breaks. Expect partly to mostly cloudy skies in the afternoon. |
Mt. Hood
| Wednesday | Very light snow showers during the morning hours, then clouds giving way to sunshine from late morning onwards. |
Issued: 7:09 AM PDT Wednesday, March 11, 2020
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Wednesday Morning | Snow Level | 2000' | 2000' | 2500' | 4000' | 3500' | 3500' | 3500' | 4500' |
| Wednesday Afternoon | Snow Level | 2500' | 2000' | 3000' | 3500' | 3000' | 3000' | 3000' | 3500' |
| Wednesday Evening | Freezing Level | 3000' | 2000' | 2500' | 3500' | 2500' | 3000' | 3500' | 4000' |
| Wednesday Night | Freezing Level | 2000' | 1000' | 1000' | 1500' | 1500' | 1500' | 2500' | 2500' |
| Thursday Morning | Freezing Level | 1500' | 500' | 500' | 1500' | 1000' | 1500' | 2000' | 2000' |
| Thursday Afternoon | Freezing Level | 2500' | 2500' | 3000' | 3500' | 3000' | 3000' | 4000' | 4000' |
| Hurricane Ridge | Elevation |
|---|---|
| Wednesday Morning |
Snow Level 2000' |
| Wednesday Afternoon |
Snow Level 2500' |
| Wednesday Evening |
Freezing Level 3000' |
| Wednesday Night |
Freezing Level 2000' |
| Thursday Morning |
Freezing Level 1500' |
| Thursday Afternoon |
Freezing Level 2500' |
| Mt. Baker | Elevation |
|---|---|
| Wednesday Morning |
Snow Level 2000' |
| Wednesday Afternoon |
Snow Level 2000' |
| Wednesday Evening |
Freezing Level 2000' |
| Wednesday Night |
Freezing Level 1000' |
| Thursday Morning |
Freezing Level 500' |
| Thursday Afternoon |
Freezing Level 2500' |
| Washington Pass | Elevation |
|---|---|
| Wednesday Morning |
Snow Level 2500' |
| Wednesday Afternoon |
Snow Level 3000' |
| Wednesday Evening |
Freezing Level 2500' |
| Wednesday Night |
Freezing Level 1000' |
| Thursday Morning |
Freezing Level 500' |
| Thursday Afternoon |
Freezing Level 3000' |
| Leavenworth | Elevation |
|---|---|
| Wednesday Morning |
Snow Level 4000' |
| Wednesday Afternoon |
Snow Level 3500' |
| Wednesday Evening |
Freezing Level 3500' |
| Wednesday Night |
Freezing Level 1500' |
| Thursday Morning |
Freezing Level 1500' |
| Thursday Afternoon |
Freezing Level 3500' |
| Stevens Pass | Elevation |
|---|---|
| Wednesday Morning |
Snow Level 3500' |
| Wednesday Afternoon |
Snow Level 3000' |
| Wednesday Evening |
Freezing Level 2500' |
| Wednesday Night |
Freezing Level 1500' |
| Thursday Morning |
Freezing Level 1000' |
| Thursday Afternoon |
Freezing Level 3000' |
| Snoqualmie Pass | Elevation |
|---|---|
| Wednesday Morning |
Snow Level 3500' |
| Wednesday Afternoon |
Snow Level 3000' |
| Wednesday Evening |
Freezing Level 3000' |
| Wednesday Night |
Freezing Level 1500' |
| Thursday Morning |
Freezing Level 1500' |
| Thursday Afternoon |
Freezing Level 3000' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Wednesday Morning |
Snow Level 3500' |
| Wednesday Afternoon |
Snow Level 3000' |
| Wednesday Evening |
Freezing Level 3500' |
| Wednesday Night |
Freezing Level 2500' |
| Thursday Morning |
Freezing Level 2000' |
| Thursday Afternoon |
Freezing Level 4000' |
| Mt. Hood | Elevation |
|---|---|
| Wednesday Morning |
Snow Level 4500' |
| Wednesday Afternoon |
Snow Level 3500' |
| Wednesday Evening |
Freezing Level 4000' |
| Wednesday Night |
Freezing Level 2500' |
| Thursday Morning |
Freezing Level 2000' |
| Thursday Afternoon |
Freezing 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
| Wednesday | Wednesday Night | Tuesday | |
|---|---|---|---|
| 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | 0 | 0 | 0 |
| Mt Baker Ski Area | LT 0.10 | 0 | LT 0.10 |
| Washington Pass | LT 0.10 | 0 | 0 |
| Leavenworth | LT 0.10 | 0 | 0 |
| Stevens Pass | LT 0.10 | LT 0.10 | 0 |
| Snoqualmie Pass | LT 0.10 | LT 0.10 | LT 0.10 |
| Mission Ridge | 0 | 0 | 0 |
| Crystal Mt | LT 0.10 | 0 | 0 |
| Paradise | LT 0.10 | 0 | 0 |
| White Pass | LT 0.10 | 0 | 0 |
| Mt Hood Meadows | LT 0.10 | 0 | 0 |
| Timberline | LT 0.10 | 0 | 0 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Wednesday | 0 |
| Wednesday Night | 0 |
| Tuesday | 0 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Wednesday | LT 0.10 |
| Wednesday Night | 0 |
| Tuesday | LT 0.10 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Wednesday | LT 0.10 |
| Wednesday Night | 0 |
| Tuesday | 0 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Wednesday | LT 0.10 |
| Wednesday Night | 0 |
| Tuesday | 0 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Wednesday | LT 0.10 |
| Wednesday Night | LT 0.10 |
| Tuesday | 0 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Wednesday | LT 0.10 |
| Wednesday Night | LT 0.10 |
| Tuesday | LT 0.10 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Wednesday | 0 |
| Wednesday Night | 0 |
| Tuesday | 0 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Wednesday | LT 0.10 |
| Wednesday Night | 0 |
| Tuesday | 0 |
| Paradise | Precipitation Forecast |
|---|---|
| Wednesday | LT 0.10 |
| Wednesday Night | 0 |
| Tuesday | 0 |
| White Pass | Precipitation Forecast |
|---|---|
| Wednesday | LT 0.10 |
| Wednesday Night | 0 |
| Tuesday | 0 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Wednesday | LT 0.10 |
| Wednesday Night | 0 |
| Tuesday | 0 |
| Timberline | Precipitation Forecast |
|---|---|
| Wednesday | LT 0.10 |
| Wednesday Night | 0 |
| Tuesday | 0 |
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: 7:09 AM PDT Wednesday, March 11, 2020
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Wednesday Morning | W 5 - 15 | WSW 10 - 20 | W 10 - 20 | W 10 - 20 | W 15 - 25 |
| Wednesday Afternoon | W 5 - 15 | W 10 - 20 | W 10 - 20 | W 5 - 15 | W 15 - 25 |
| Wednesday Evening | W 5 - 15 | W 55 - 15 | WNW 5 - 15 | WNW 0 - 10 | W 10 - 20 |
| Wednesday Night | W 5 - 15 | W 0 - 10 | W 5 - 15 | W 0 - 10 | WNW 5 - 15 |
| Thursday Morning | VAR 0 - 10 | W 0 - 10 | WNW 0 - 10 | NW 0 - 10 | NW 0 - 10 |
| Thursday Afternoon | W 0 - 10 | WSW 0 - 10 | W 0 - 10 | W 0 - 10 | W 5 - 15 |
| Hurricane Ridge | Elevation |
|---|---|
| Wednesday Morning | W 5 - 15 |
| Wednesday Afternoon | W 5 - 15 |
| Wednesday Evening | W 5 - 15 |
| Wednesday Night | W 5 - 15 |
| Thursday Morning | VAR 0 - 10 |
| Thursday Afternoon | W 0 - 10 |
| Mt. Baker | Elevation |
|---|---|
| Wednesday Morning | WSW 10 - 20 |
| Wednesday Afternoon | W 10 - 20 |
| Wednesday Evening | W 55 - 15 |
| Wednesday Night | W 0 - 10 |
| Thursday Morning | W 0 - 10 |
| Thursday Afternoon | WSW 0 - 10 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Wednesday Morning | W 10 - 20 |
| Wednesday Afternoon | W 10 - 20 |
| Wednesday Evening | WNW 5 - 15 |
| Wednesday Night | W 5 - 15 |
| Thursday Morning | WNW 0 - 10 |
| Thursday Afternoon | W 0 - 10 |
| Mt. Rainier | Elevation |
|---|---|
| Wednesday Morning | W 10 - 20 |
| Wednesday Afternoon | W 5 - 15 |
| Wednesday Evening | WNW 0 - 10 |
| Wednesday Night | W 0 - 10 |
| Thursday Morning | NW 0 - 10 |
| Thursday Afternoon | W 0 - 10 |
| Mt. Hood | Elevation |
|---|---|
| Wednesday Morning | W 15 - 25 |
| Wednesday Afternoon | W 15 - 25 |
| Wednesday Evening | W 10 - 20 |
| Wednesday Night | WNW 5 - 15 |
| Thursday Morning | NW 0 - 10 |
| Thursday Afternoon | W 5 - 15 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Wednesday Morning | W 5 - 15 |
| Wednesday Afternoon | W 5 - 15 |
| Wednesday Evening | W 5 - 15 |
| Wednesday Night | W 5 - 15 |
| Thursday Morning | VAR 0 - 10 |
| Thursday Afternoon | W 0 - 10 |
| Mt. Baker | Direction - Speed |
|---|---|
| Wednesday Morning | WSW 10 - 20 |
| Wednesday Afternoon | W 10 - 20 |
| Wednesday Evening | W 55 - 15 |
| Wednesday Night | W 0 - 10 |
| Thursday Morning | W 0 - 10 |
| Thursday Afternoon | WSW 0 - 10 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Wednesday Morning | W 10 - 20 |
| Wednesday Afternoon | W 10 - 20 |
| Wednesday Evening | WNW 5 - 15 |
| Wednesday Night | W 5 - 15 |
| Thursday Morning | WNW 0 - 10 |
| Thursday Afternoon | W 0 - 10 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Wednesday Morning | W 10 - 20 |
| Wednesday Afternoon | W 5 - 15 |
| Wednesday Evening | WNW 0 - 10 |
| Wednesday Night | W 0 - 10 |
| Thursday Morning | NW 0 - 10 |
| Thursday Afternoon | W 0 - 10 |
| Mt. Hood | Direction - Speed |
|---|---|
| Wednesday Morning | W 15 - 25 |
| Wednesday Afternoon | W 15 - 25 |
| Wednesday Evening | W 10 - 20 |
| Wednesday Night | WNW 5 - 15 |
| Thursday Morning | NW 0 - 10 |
| Thursday Afternoon | W 5 - 15 |
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 | |
|---|---|---|---|---|---|
| Wednesday Morning | W 20 - 30 | W 30 - 40 | W 40 - 60 | WNW 35 - 45 | NW 40 - 50 |
| Wednesday Afternoon | W 15 - 25 | W 15 - 25 | WNW 40 - 50 | WNW 35 - 45 | WNW 40 - 50 |
| Wednesday Evening | W 20 - 30 | WNW 15 - 25 | WNW 35 - 45 | WNW 35 - 45 | NW 40 - 50 |
| Wednesday Night | W 15 - 25 | WNW 10 - 20 | WNW 35 - 45 | WNW 30 - 40 | NW 35 - 45 |
| Thursday Morning | WNW 20 - 30 | WNW 10 - 20 | NW 30 - 40 | NW 25 - 35 | NW 25 - 35 |
| Thursday Afternoon | W 20 - 30 | W 10 - 20 | WNW 25 - 35 | WNW 25 - 35 | NW 25 - 35 |
| Mt. Baker | Direction - Speed |
|---|---|
| Wednesday Morning | W 20 - 30 |
| Wednesday Afternoon | W 15 - 25 |
| Wednesday Evening | W 20 - 30 |
| Wednesday Night | W 15 - 25 |
| Thursday Morning | WNW 20 - 30 |
| Thursday Afternoon | W 20 - 30 |
| Washington Pass | Direction - Speed |
|---|---|
| Wednesday Morning | W 30 - 40 |
| Wednesday Afternoon | W 15 - 25 |
| Wednesday Evening | WNW 15 - 25 |
| Wednesday Night | WNW 10 - 20 |
| Thursday Morning | WNW 10 - 20 |
| Thursday Afternoon | W 10 - 20 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Wednesday Morning | W 40 - 60 |
| Wednesday Afternoon | WNW 40 - 50 |
| Wednesday Evening | WNW 35 - 45 |
| Wednesday Night | WNW 35 - 45 |
| Thursday Morning | NW 30 - 40 |
| Thursday Afternoon | WNW 25 - 35 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Wednesday Morning | WNW 35 - 45 |
| Wednesday Afternoon | WNW 35 - 45 |
| Wednesday Evening | WNW 35 - 45 |
| Wednesday Night | WNW 30 - 40 |
| Thursday Morning | NW 25 - 35 |
| Thursday Afternoon | WNW 25 - 35 |
| Mt. Hood | Direction - Speed |
|---|---|
| Wednesday Morning | NW 40 - 50 |
| Wednesday Afternoon | WNW 40 - 50 |
| Wednesday Evening | NW 40 - 50 |
| Wednesday Night | NW 35 - 45 |
| Thursday Morning | NW 25 - 35 |
| Thursday Afternoon | NW 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.
Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Previous forecast from Mar 10, 2020
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