Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Weather Synopsis for Tuesday & Tuesday
A well-defined N-S oriented and progressive cold front is crossing the Puget sound at 7 AM on Tuesday morning. A band of moderate to heavy precipitation with moderate SSE winds ahead of will pass through the Cascades through 10-11 AM. Snow levels are dropping rapidly with the onset of precipitation and the passes are starting near freezing or below with easterly flow, so this should be a snow event in most areas. A cool upper trough moves in quickly behind the front with strong convective, showery precipitation that has reached the coastline and should fill into the region shortly after the frontal passage with a shift to SW winds. The trough should bring a pulse a sustained period of slightly stronger winds (moderate, potentially strong in places). The trough axis crosses the region on Tuesday evening with winds switching westerly and bringing heavier snow to the Cascade Passes. The snowfall on Tuesday should favor Baker and Paradise, but as winds switch more westerly Tuesday night, the Cascade passes should also get heavy snowfall.
Post-frontal westerly winds should gradually decrease late Tuesday night into Wednesday morning as precipitation also becomes lighter by Wednesday morning. A strong warm front approaches the region from the south and should bring heavy rain and snow along with rising snow levels working northward from Mt. Hood and the southern Washington Cascades spreading into the northern Washington Cascades by the afternoon. Expect substantial warming late in the day for Mt. Hood.
Weather Forecast
Hurricane Ridge
| Tuesday | Moderate snow early becoming moderate snow showers from mid-morning onward. Gradually lowering snow levels. Moderate winds gusting strong. |
Mt. Baker
| Tuesday | Heavy snow. Moderate winds gusting strong. Gradually lowering snow levels. |
Washington Pass and Leavenworth
| Tuesday | Light to occasionally moderate snow becoming snow showers in the afternoon. |
Stevens and Snoqualmie Pass
| Tuesday | Light to moderate snow. E winds at the passes 10-25 becoming variable in the afternoon. Moderate winds at 5000 ft. |
Mt. Rainier, Crystal and White Pass
| Tuesday | Heavy rain/snow at Paradise, moderate rain/snow at Crystal, and light to moderate rain/snow at White Pass. Lowering snow levels. Precipitation becoming more showering in nature in the afternoon. |
Mt. Hood
| Tuesday | Moderate rain and snow. Increasing moderate 5000 ft winds. |
Issued: 7:04 AM PST Tuesday, January 21, 2020
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 * | 3500' | 3500' | 2500' | 2000' | 3000' | 3000' | 3500' | 4000' |
| Tuesday Afternoon | Snow Level | 3000' | 3000' | 3500' | 3000' | 3000' | 3000' | 3500' | 3000' |
| Tuesday Evening | Snow Level | 3000' | 2500' | 2500' | 2500' | 3000' | 2500' | 3000' | 3000' |
| Tuesday Night | Snow Level | 3000' | 2500' | 2500' | 2000' | 2500' | 2500' | 2500' | 2500' |
| Wednesday Morning | Snow Level | 2000' | 2000' | 1500' | 1000' | 2000' | 2000' | 2000' | 2500' |
| Wednesday Afternoon | Snow Level * | 3500' | 2500' | 2500' | 3000' | 3000' | 3000' | 3500' | 5000' |
| Hurricane Ridge | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 3500' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 3000' |
| Tuesday Evening |
Snow Level 3000' |
| Tuesday Night |
Snow Level 3000' |
| Wednesday Morning |
Snow Level 2000' |
| Wednesday Afternoon |
Snow Level 3500' (Easterly Flow *) |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 3500' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 3000' |
| Tuesday Evening |
Snow Level 2500' |
| Tuesday Night |
Snow Level 2500' |
| Wednesday Morning |
Snow Level 2000' |
| Wednesday Afternoon |
Snow Level 2500' (Easterly Flow *) |
| Washington Pass | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 2500' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 3500' |
| Tuesday Evening |
Snow Level 2500' |
| Tuesday Night |
Snow Level 2500' |
| Wednesday Morning |
Snow Level 1500' |
| Wednesday Afternoon |
Snow Level 2500' (Easterly Flow *) |
| Leavenworth | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 2000' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 3000' |
| Tuesday Evening |
Snow Level 2500' |
| Tuesday Night |
Snow Level 2000' |
| Wednesday Morning |
Snow Level 1000' |
| Wednesday Afternoon |
Snow Level 3000' (Easterly Flow *) |
| Stevens Pass | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 3000' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 3000' |
| Tuesday Evening |
Snow Level 3000' |
| Tuesday Night |
Snow Level 2500' |
| Wednesday Morning |
Snow Level 2000' |
| Wednesday Afternoon |
Snow Level 3000' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 3000' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 3000' |
| Tuesday Evening |
Snow Level 2500' |
| Tuesday Night |
Snow Level 2500' |
| Wednesday Morning |
Snow Level 2000' |
| Wednesday Afternoon |
Snow Level 3000' (Easterly Flow *) |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 3500' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 3500' |
| Tuesday Evening |
Snow Level 3000' |
| Tuesday Night |
Snow Level 2500' |
| Wednesday Morning |
Snow Level 2000' |
| Wednesday Afternoon |
Snow Level 3500' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 4000' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 3000' |
| Tuesday Evening |
Snow Level 3000' |
| Tuesday Night |
Snow Level 2500' |
| Wednesday Morning |
Snow Level 2500' |
| Wednesday Afternoon |
Snow Level 5000' (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.
Precipitation Forecast
| Tuesday | Tuesday Night | Tuesday | |
|---|---|---|---|
| 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | 0.50 | 0.50 | 0.25 |
| Mt Baker Ski Area | 1.00 | 1.00 | 0.25 |
| Washington Pass | 0.25 - 0.50 | 0.50 - 0.75 | 0.25 |
| Leavenworth | 0.25 | LT 0.25 | LT 0.25 |
| Stevens Pass | 0.25 | 0.50 - 0.75 | 0.25 - 0.50 |
| Snoqualmie Pass | 0.25 - 0.50 | 0.75 -1.00 | 0.50 |
| Mission Ridge | 0.25 | LT 0.10 | LT 0.10 |
| Crystal Mt | 0.50 | 0.25 | LT 0.25 |
| Paradise | 1.00 | 1.00 | 1.00 |
| White Pass | 0.50 | 0.50 | 0.50 |
| Mt Hood Meadows | 0.50 - 0.75 | 0.75 | 1.00 - 1.50 |
| Timberline | 0.50 - 0.75 | 0.75 | 1.50 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Tuesday | 0.50 |
| Tuesday Night | 0.50 |
| Tuesday | 0.25 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Tuesday | 1.00 |
| Tuesday Night | 1.00 |
| Tuesday | 0.25 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Tuesday | 0.25 - 0.50 |
| Tuesday Night | 0.50 - 0.75 |
| Tuesday | 0.25 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Tuesday | 0.25 |
| Tuesday Night | LT 0.25 |
| Tuesday | LT 0.25 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Tuesday | 0.25 |
| Tuesday Night | 0.50 - 0.75 |
| Tuesday | 0.25 - 0.50 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Tuesday | 0.25 - 0.50 |
| Tuesday Night | 0.75 -1.00 |
| Tuesday | 0.50 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Tuesday | 0.25 |
| Tuesday Night | LT 0.10 |
| Tuesday | LT 0.10 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Tuesday | 0.50 |
| Tuesday Night | 0.25 |
| Tuesday | LT 0.25 |
| Paradise | Precipitation Forecast |
|---|---|
| Tuesday | 1.00 |
| Tuesday Night | 1.00 |
| Tuesday | 1.00 |
| White Pass | Precipitation Forecast |
|---|---|
| Tuesday | 0.50 |
| Tuesday Night | 0.50 |
| Tuesday | 0.50 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Tuesday | 0.50 - 0.75 |
| Tuesday Night | 0.75 |
| Tuesday | 1.00 - 1.50 |
| Timberline | Precipitation Forecast |
|---|---|
| Tuesday | 0.50 - 0.75 |
| Tuesday Night | 0.75 |
| Tuesday | 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: 7:04 AM PST Tuesday, January 21, 2020
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Tuesday Morning | SSE 20 - 30 | S 20 - 30 | ESE 15 - 25 | S 15 - 25 | WSW 15 - 25 |
| Tuesday Afternoon | S 20 - 30 | S 20 - 30 | SSW 15 - 25 | SSW 15 - 25 | WSW 20 - 30 |
| Tuesday Evening | SW 20 - 30 | S 20 - 30 | WSW 20 - 30 | WSW 15 - 25 | WSW 20 - 30 |
| Tuesday Night | SW 15 - 25 | SW 15 - 25 | WSW 20 - 30 | WSW 15 - 25 | WSW 20 - 30 |
| Wednesday Morning | SSE 10 - 20 | SSE 5 - 15 | WSW 5 - 15 | SW 5 - 15 | WSW 15 - 25 |
| Wednesday Afternoon | SSW 15 - 25 | SE 10 - 20 | S 15 - 25 | SSW 15 - 25 | WSW 20 - 30 |
| Hurricane Ridge | Elevation |
|---|---|
| Tuesday Morning | SSE 20 - 30 |
| Tuesday Afternoon | S 20 - 30 |
| Tuesday Evening | SW 20 - 30 |
| Tuesday Night | SW 15 - 25 |
| Wednesday Morning | SSE 10 - 20 |
| Wednesday Afternoon | SSW 15 - 25 |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Morning | S 20 - 30 |
| Tuesday Afternoon | S 20 - 30 |
| Tuesday Evening | S 20 - 30 |
| Tuesday Night | SW 15 - 25 |
| Wednesday Morning | SSE 5 - 15 |
| Wednesday Afternoon | SE 10 - 20 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Morning | ESE 15 - 25 |
| Tuesday Afternoon | SSW 15 - 25 |
| Tuesday Evening | WSW 20 - 30 |
| Tuesday Night | WSW 20 - 30 |
| Wednesday Morning | WSW 5 - 15 |
| Wednesday Afternoon | S 15 - 25 |
| Mt. Rainier | Elevation |
|---|---|
| Tuesday Morning | S 15 - 25 |
| Tuesday Afternoon | SSW 15 - 25 |
| Tuesday Evening | WSW 15 - 25 |
| Tuesday Night | WSW 15 - 25 |
| Wednesday Morning | SW 5 - 15 |
| Wednesday Afternoon | SSW 15 - 25 |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Morning | WSW 15 - 25 |
| Tuesday Afternoon | WSW 20 - 30 |
| Tuesday Evening | WSW 20 - 30 |
| Tuesday Night | WSW 20 - 30 |
| Wednesday Morning | WSW 15 - 25 |
| Wednesday Afternoon | WSW 20 - 30 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Tuesday Morning | SSE 20 - 30 |
| Tuesday Afternoon | S 20 - 30 |
| Tuesday Evening | SW 20 - 30 |
| Tuesday Night | SW 15 - 25 |
| Wednesday Morning | SSE 10 - 20 |
| Wednesday Afternoon | SSW 15 - 25 |
| Mt. Baker | Direction - Speed |
|---|---|
| Tuesday Morning | S 20 - 30 |
| Tuesday Afternoon | S 20 - 30 |
| Tuesday Evening | S 20 - 30 |
| Tuesday Night | SW 15 - 25 |
| Wednesday Morning | SSE 5 - 15 |
| Wednesday Afternoon | SE 10 - 20 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Tuesday Morning | ESE 15 - 25 |
| Tuesday Afternoon | SSW 15 - 25 |
| Tuesday Evening | WSW 20 - 30 |
| Tuesday Night | WSW 20 - 30 |
| Wednesday Morning | WSW 5 - 15 |
| Wednesday Afternoon | S 15 - 25 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Tuesday Morning | S 15 - 25 |
| Tuesday Afternoon | SSW 15 - 25 |
| Tuesday Evening | WSW 15 - 25 |
| Tuesday Night | WSW 15 - 25 |
| Wednesday Morning | SW 5 - 15 |
| Wednesday Afternoon | SSW 15 - 25 |
| Mt. Hood | Direction - Speed |
|---|---|
| Tuesday Morning | WSW 15 - 25 |
| Tuesday Afternoon | WSW 20 - 30 |
| Tuesday Evening | WSW 20 - 30 |
| Tuesday Night | WSW 20 - 30 |
| Wednesday Morning | WSW 15 - 25 |
| Wednesday 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.
Free Winds at 9000' (mph)
| Mt. Baker | Washington Pass | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Tuesday Morning | SSW 25 - 35 | S 15 - 25 | SW 25 - 35 | WSW 25 - 35 | WSW 35 - 45 |
| Tuesday Afternoon | SSW 35 - 45 | WSW 30 - 40 | WSW 40 - 55 | WSW 35 - 45 | WSW 40 - 55 |
| Tuesday Evening | SSW 35 - 45 | WSW 35 - 45 | WSW 45 - 60 | WSW 35 - 45 | WSW 40 - 55 |
| Tuesday Night | WSW 25 - 35 | WSW 25 - 35 | WSW 35 - 45 | WSW 30 - 40 | W 35 - 45 |
| Wednesday Morning | WSW 15 - 25 | WSW 15 - 25 | WSW 35 - 45 | WSW 30 - 40 | W 35 - 45 |
| Wednesday Afternoon | WSW 25 - 35 | WSW 20 - 30 | WSW 40 - 55 | WSW 30 - 40 | W 35 - 45 |
| Mt. Baker | Direction - Speed |
|---|---|
| Tuesday Morning | SSW 25 - 35 |
| Tuesday Afternoon | SSW 35 - 45 |
| Tuesday Evening | SSW 35 - 45 |
| Tuesday Night | WSW 25 - 35 |
| Wednesday Morning | WSW 15 - 25 |
| Wednesday Afternoon | WSW 25 - 35 |
| Washington Pass | Direction - Speed |
|---|---|
| Tuesday Morning | S 15 - 25 |
| Tuesday Afternoon | WSW 30 - 40 |
| Tuesday Evening | WSW 35 - 45 |
| Tuesday Night | WSW 25 - 35 |
| Wednesday Morning | WSW 15 - 25 |
| Wednesday Afternoon | WSW 20 - 30 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Tuesday Morning | SW 25 - 35 |
| Tuesday Afternoon | WSW 40 - 55 |
| Tuesday Evening | WSW 45 - 60 |
| Tuesday Night | WSW 35 - 45 |
| Wednesday Morning | WSW 35 - 45 |
| Wednesday Afternoon | WSW 40 - 55 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Tuesday Morning | WSW 25 - 35 |
| Tuesday Afternoon | WSW 35 - 45 |
| Tuesday Evening | WSW 35 - 45 |
| Tuesday Night | WSW 30 - 40 |
| Wednesday Morning | WSW 30 - 40 |
| Wednesday Afternoon | WSW 30 - 40 |
| Mt. Hood | Direction - Speed |
|---|---|
| Tuesday Morning | WSW 35 - 45 |
| Tuesday Afternoon | WSW 40 - 55 |
| Tuesday Evening | WSW 40 - 55 |
| Tuesday Night | W 35 - 45 |
| Wednesday Morning | W 35 - 45 |
| Wednesday Afternoon | W 35 - 45 |
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 Jan 20, 2020
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.