Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Weather Synopsis for Thursday & Wednesday
A cold closed upper trough slides down Vancouver Island on Thursday bringing unseasonably cold early March weather. A band of light to moderate snow producing light snow in the lowlands will move through the central and north Cascades throughout the morning. Squally snow showers producing brief periods of heavier snowfall activity will increase during the afternoon and evening hours in many mountain locations. WSW flow peaks during the morning hours and gradually decreases later in the day, becoming westerly overnight enhancing orographic activity in the Cascades. As the upper-level trough moves onshore during the evening hours it should enhance snow shower activity with convergence likely developing. Snow levels should remain near sea-level Thursday morning with a slight diurnal increase in snow level by the afternoon and cooling overnight.
Snow shower activity will decrease late Thursday night into Friday morning as the upper trough shifts east of the Cascades, bringing a drying upper-level NNE flow while low-level flow remains light westerly, keeping moisture, clouds, and flurries banked against the west slopes of the Cascades on Friday with the east slopes generally drying out. Snow levels will once again rise above sea-level with diurnal warming, peaking between 500 and 1500 ft.
Weather Forecast
Hurricane Ridge
| Thursday | Light snow shower activity increasing throughout the day. Light winds. |
Mt. Baker
| Thursday | Cloudy with snow flurries in the morning, then light snow in the afternoon. Light winds. |
Washington Pass and Leavenworth
| Thursday | Cloudy with snow flurries in the morning, then light snow in the afternoon. Light winds. |
Stevens and Snoqualmie Pass
| Thursday | Increasing light snow with some heavier squalls after 10 AM. Decreasing light to moderate winds at 5000 ft. Light winds gusting moderate at pass level. |
Mt. Rainier, Crystal and White Pass
| Thursday | Increasing light snow with some heavier squalls . |
Mt. Hood
| Thursday | Increasing snow showers, heaviest toward the end of the day. Moderate winds. |
Issued: 6:59 AM PST Thursday, March 7, 2019
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Thursday Morning | Snow Level | 500' | 0' | 0' | 0' | 0' | 0' | 0' | 500' |
| Thursday Afternoon | Snow Level | 1500' | 1000' | 1000' | 1000' | 1000' | 1000' | 1000' | 1500' |
| Thursday Evening | Snow Level | 1000' | 1000' | 500' | 1000' | 1000' | 1000' | 1000' | 1500' |
| Thursday Night | Snow Level | 500' | 0' | 0' | 0' | 0' | 0' | 0' | 0' |
| Friday Morning | Snow Level | 0' | 0' | 0' | 0' | 0' | 0' | 0' | 0' |
| Friday Afternoon | Snow Level | 1500' | 1000' | 1000' | 500' | 1000' | 1000' | 1000' | 1000' |
| Hurricane Ridge | Elevation |
|---|---|
| Thursday Morning |
Snow Level 500' |
| Thursday Afternoon |
Snow Level 1500' |
| Thursday Evening |
Snow Level 1000' |
| Thursday Night |
Snow Level 500' |
| Friday Morning |
Snow Level 0' |
| Friday Afternoon |
Snow Level 1500' |
| Mt. Baker | Elevation |
|---|---|
| Thursday Morning |
Snow Level 0' |
| Thursday Afternoon |
Snow Level 1000' |
| Thursday Evening |
Snow Level 1000' |
| Thursday Night |
Snow Level 0' |
| Friday Morning |
Snow Level 0' |
| Friday Afternoon |
Snow Level 1000' |
| Washington Pass | Elevation |
|---|---|
| Thursday Morning |
Snow Level 0' |
| Thursday Afternoon |
Snow Level 1000' |
| Thursday Evening |
Snow Level 500' |
| Thursday Night |
Snow Level 0' |
| Friday Morning |
Snow Level 0' |
| Friday Afternoon |
Snow Level 1000' |
| Leavenworth | Elevation |
|---|---|
| Thursday Morning |
Snow Level 0' |
| Thursday Afternoon |
Snow Level 1000' |
| Thursday Evening |
Snow Level 1000' |
| Thursday Night |
Snow Level 0' |
| Friday Morning |
Snow Level 0' |
| Friday Afternoon |
Snow Level 500' |
| Stevens Pass | Elevation |
|---|---|
| Thursday Morning |
Snow Level 0' |
| Thursday Afternoon |
Snow Level 1000' |
| Thursday Evening |
Snow Level 1000' |
| Thursday Night |
Snow Level 0' |
| Friday Morning |
Snow Level 0' |
| Friday Afternoon |
Snow Level 1000' |
| Snoqualmie Pass | Elevation |
|---|---|
| Thursday Morning |
Snow Level 0' |
| Thursday Afternoon |
Snow Level 1000' |
| Thursday Evening |
Snow Level 1000' |
| Thursday Night |
Snow Level 0' |
| Friday Morning |
Snow Level 0' |
| Friday Afternoon |
Snow Level 1000' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Thursday Morning |
Snow Level 0' |
| Thursday Afternoon |
Snow Level 1000' |
| Thursday Evening |
Snow Level 1000' |
| Thursday Night |
Snow Level 0' |
| Friday Morning |
Snow Level 0' |
| Friday Afternoon |
Snow Level 1000' |
| Mt. Hood | Elevation |
|---|---|
| Thursday Morning |
Snow Level 500' |
| Thursday Afternoon |
Snow Level 1500' |
| Thursday Evening |
Snow Level 1500' |
| Thursday Night |
Snow Level 0' |
| Friday Morning |
Snow Level 0' |
| Friday Afternoon |
Snow Level 1000' |
* 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 | Thursday Night | Wednesday | |
|---|---|---|---|
| 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | 0.25 | LT 0.25 | 0 |
| Mt Baker Ski Area | LT 0.25 | LT 0.10 | LT 0.10 |
| Washington Pass | LT 0.10 | LT 0.10 | LT 0.10 |
| Leavenworth | 0 | 0 | 0 |
| Stevens Pass | LT 0.25 | 0.25 - 0.50 | LT 0.10 |
| Snoqualmie Pass | 0.25 - 0.50 | 0.25 - 0.50 | LT 0.10 |
| Mission Ridge | LT 0.10 | LT 0.10 | LT 0.10 |
| Crystal Mt | LT 0.25 | LT 0.10 | LT 0.10 |
| Paradise | 0.25 - 0.50 | 0.25 | 0 |
| White Pass | LT 0.25 | LT 0.25 | 0 |
| Mt Hood Meadows | 0.25 - 0.50 | 0.25 - 0.50 | 0.25 - 0.50 |
| Timberline | 0.50 | 0.25 - 0.50 | 0.25 - 0.50 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Thursday | 0.25 |
| Thursday Night | LT 0.25 |
| Wednesday | 0 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Thursday | LT 0.25 |
| Thursday Night | LT 0.10 |
| Wednesday | LT 0.10 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Thursday | LT 0.10 |
| Thursday Night | LT 0.10 |
| Wednesday | LT 0.10 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Thursday | 0 |
| Thursday Night | 0 |
| Wednesday | 0 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Thursday | LT 0.25 |
| Thursday Night | 0.25 - 0.50 |
| Wednesday | LT 0.10 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Thursday | 0.25 - 0.50 |
| Thursday Night | 0.25 - 0.50 |
| Wednesday | LT 0.10 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Thursday | LT 0.10 |
| Thursday Night | LT 0.10 |
| Wednesday | LT 0.10 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Thursday | LT 0.25 |
| Thursday Night | LT 0.10 |
| Wednesday | LT 0.10 |
| Paradise | Precipitation Forecast |
|---|---|
| Thursday | 0.25 - 0.50 |
| Thursday Night | 0.25 |
| Wednesday | 0 |
| White Pass | Precipitation Forecast |
|---|---|
| Thursday | LT 0.25 |
| Thursday Night | LT 0.25 |
| Wednesday | 0 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Thursday | 0.25 - 0.50 |
| Thursday Night | 0.25 - 0.50 |
| Wednesday | 0.25 - 0.50 |
| Timberline | Precipitation Forecast |
|---|---|
| Thursday | 0.50 |
| Thursday Night | 0.25 - 0.50 |
| Wednesday | 0.25 - 0.50 |
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: 6:59 AM PST Thursday, March 7, 2019
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Thursday Morning | WSW 0 - 10 | SW 0 - 10 | WSW 15 - 25 | WSW 15 - 25 | WSW 20 - 30 |
| Thursday Afternoon | WSW 5 - 15 | SW 5 - 15 | WSW 10 - 20 | SW 10 - 20 | WSW 15 - 25 |
| Thursday Evening | W 5 - 15 | SSW 5 - 15 | WSW 10 - 20 | WSW 5 - 15 | WSW 10 - 20 |
| Thursday Night | W 5 - 15 | VAR 0 - 10 | W 5 - 15 | WSW 5 - 15 | WSW 10 - 20 |
| Friday Morning | VAR 0 - 10 | S 0 - 10 | WSW 5 - 15 | WSW 5 - 15 | WSW 10 - 20 |
| Friday Afternoon | VAR 0 - 10 | WSW 5 - 15 | W 5 - 15 | WSW 5 - 15 | WSW 10 - 20 |
| Hurricane Ridge | Elevation |
|---|---|
| Thursday Morning | WSW 0 - 10 |
| Thursday Afternoon | WSW 5 - 15 |
| Thursday Evening | W 5 - 15 |
| Thursday Night | W 5 - 15 |
| Friday Morning | VAR 0 - 10 |
| Friday Afternoon | VAR 0 - 10 |
| Mt. Baker | Elevation |
|---|---|
| Thursday Morning | SW 0 - 10 |
| Thursday Afternoon | SW 5 - 15 |
| Thursday Evening | SSW 5 - 15 |
| Thursday Night | VAR 0 - 10 |
| Friday Morning | S 0 - 10 |
| Friday Afternoon | WSW 5 - 15 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Thursday Morning | WSW 15 - 25 |
| Thursday Afternoon | WSW 10 - 20 |
| Thursday Evening | WSW 10 - 20 |
| Thursday Night | W 5 - 15 |
| Friday Morning | WSW 5 - 15 |
| Friday Afternoon | W 5 - 15 |
| Mt. Rainier | Elevation |
|---|---|
| Thursday Morning | WSW 15 - 25 |
| Thursday Afternoon | SW 10 - 20 |
| Thursday Evening | WSW 5 - 15 |
| Thursday Night | WSW 5 - 15 |
| Friday Morning | WSW 5 - 15 |
| Friday Afternoon | WSW 5 - 15 |
| Mt. Hood | Elevation |
|---|---|
| Thursday Morning | WSW 20 - 30 |
| Thursday Afternoon | WSW 15 - 25 |
| Thursday Evening | WSW 10 - 20 |
| Thursday Night | WSW 10 - 20 |
| Friday Morning | WSW 10 - 20 |
| Friday Afternoon | WSW 10 - 20 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Thursday Morning | WSW 0 - 10 |
| Thursday Afternoon | WSW 5 - 15 |
| Thursday Evening | W 5 - 15 |
| Thursday Night | W 5 - 15 |
| Friday Morning | VAR 0 - 10 |
| Friday Afternoon | VAR 0 - 10 |
| Mt. Baker | Direction - Speed |
|---|---|
| Thursday Morning | SW 0 - 10 |
| Thursday Afternoon | SW 5 - 15 |
| Thursday Evening | SSW 5 - 15 |
| Thursday Night | VAR 0 - 10 |
| Friday Morning | S 0 - 10 |
| Friday Afternoon | WSW 5 - 15 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Thursday Morning | WSW 15 - 25 |
| Thursday Afternoon | WSW 10 - 20 |
| Thursday Evening | WSW 10 - 20 |
| Thursday Night | W 5 - 15 |
| Friday Morning | WSW 5 - 15 |
| Friday Afternoon | W 5 - 15 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Thursday Morning | WSW 15 - 25 |
| Thursday Afternoon | SW 10 - 20 |
| Thursday Evening | WSW 5 - 15 |
| Thursday Night | WSW 5 - 15 |
| Friday Morning | WSW 5 - 15 |
| Friday Afternoon | WSW 5 - 15 |
| Mt. Hood | Direction - Speed |
|---|---|
| Thursday Morning | WSW 20 - 30 |
| Thursday Afternoon | WSW 15 - 25 |
| Thursday Evening | WSW 10 - 20 |
| Thursday Night | WSW 10 - 20 |
| Friday Morning | WSW 10 - 20 |
| Friday Afternoon | WSW 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 Morning | WSW 10 - 20 | WSW 15 - 25 | SW 25 - 35 | WSW 30 - 45 | WSW 35 - 50 |
| Thursday Afternoon | SW 10 - 20 | WSW 10 - 20 | WSW 25 - 35 | WSW 25 - 35 | WSW 30 - 45 |
| Thursday Evening | WSW 5 - 15 | WSW 10 - 20 | WSW 20 - 30 | WSW 20 - 30 | WSW 25 - 35 |
| Thursday Night | SW 5 - 15 | W 10 - 20 | W 15 - 25 | W 15 - 25 | W 20 - 30 |
| Friday Morning | W 5 - 15 | WNW 10 - 20 | WNW 10 - 20 | WNW 15 - 25 | W 15 - 25 |
| Friday Afternoon | W 5 - 15 | WNW 5 - 15 | WNW 5 - 15 | WSW 10 - 20 | WSW 20 - 30 |
| Mt. Baker | Direction - Speed |
|---|---|
| Thursday Morning | WSW 10 - 20 |
| Thursday Afternoon | SW 10 - 20 |
| Thursday Evening | WSW 5 - 15 |
| Thursday Night | SW 5 - 15 |
| Friday Morning | W 5 - 15 |
| Friday Afternoon | W 5 - 15 |
| Washington Pass | Direction - Speed |
|---|---|
| Thursday Morning | WSW 15 - 25 |
| Thursday Afternoon | WSW 10 - 20 |
| Thursday Evening | WSW 10 - 20 |
| Thursday Night | W 10 - 20 |
| Friday Morning | WNW 10 - 20 |
| Friday Afternoon | WNW 5 - 15 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Thursday Morning | SW 25 - 35 |
| Thursday Afternoon | WSW 25 - 35 |
| Thursday Evening | WSW 20 - 30 |
| Thursday Night | W 15 - 25 |
| Friday Morning | WNW 10 - 20 |
| Friday Afternoon | WNW 5 - 15 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Thursday Morning | WSW 30 - 45 |
| Thursday Afternoon | WSW 25 - 35 |
| Thursday Evening | WSW 20 - 30 |
| Thursday Night | W 15 - 25 |
| Friday Morning | WNW 15 - 25 |
| Friday Afternoon | WSW 10 - 20 |
| Mt. Hood | Direction - Speed |
|---|---|
| Thursday Morning | WSW 35 - 50 |
| Thursday Afternoon | WSW 30 - 45 |
| Thursday Evening | WSW 25 - 35 |
| Thursday Night | W 20 - 30 |
| Friday Morning | W 15 - 25 |
| Friday Afternoon | WSW 20 - 30 |
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 5, 2019
The NWAC program is administered by the USDA-Forest Service and operates from the National Weather Service Forecast Office in Seattle. NWAC services are made possible by important collaboration and support from a wide variety of federal, state and private cooperators.