Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Weather Synopsis for Saturday & Monday
Our atmospheric river event is coming to an end as the frontal boundary, currently stretched out across much of western Washington to the Cascades begins to weaken. A weak wave off the northern California coast will begin to cut-off the seemingly endless moisture source. Before that time, moderate precipitation will continue for the Mt. Baker area, the Cascade Passes and the Mt. Rainer/Crystal area for a good chunk of today. Hurricane Ridge is already nearing the backside of the heaviest precipitation this morning. There were some amazing water amounts over the last 3 days, with 3 - 7 inches WE for the Olympics and west slopes of the Washington Cascades.
Snow levels will be slow to cool today. Milder air that has made its way over to the east slopes of the Cascades will take a bit longer, with snow levels barely dropping through this evening.
An open upper level trough passes through the region later tonight and Sunday. After a mainly dry period Sunday morning, a developing weather system may start to spread light precipitation up from the south Sunday afternoon affecting mainly Mt. Hood and the south Washington Cascades. Depending on the system's track, the Olympics and north Cascades may see some sunshine or at least some filtered sunshine through high clouds for much of the day.
Weather Forecast
Hurricane Ridge
| Saturday | Moderate rain and snow ending this morning and becoming scattered showers with a few sunbreaks. Cooling trend. |
Mt. Baker
| Saturday | Moderate rain and snow ending this afternoon and becoming cloudy with scattered light showers. Cooling trend. |
Washington Pass and Leavenworth
| Saturday | Light to occasionally moderate rain and snow ending mid-day and becoming cloudy with scattered light showers. Gradual cooling trend. |
Stevens and Snoqualmie Pass
| Saturday | Light to moderate rain and snow tapering down during the day. Gradual cooling trend. Variable winds at Pass level become light to moderate westerly in the afternoon. |
Mt. Rainier, Crystal and White Pass
| Saturday | Moderate rain and snow tapering down during the day. Gradual cooling trend. Strong crest-level SW winds. |
Mt. Hood
| Saturday | Cloudy with light to occasionally moderate rain and snow developing late morning. Very strong to extreme alpine winds. Gradual cooling trend. |
Issued: 7:08 AM PST Saturday, December 21, 2019
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Saturday Morning | Snow Level | 3000' | 3000' | 5000' | 5000' | 4500' | 4500' | 5000' | 6500' |
| Saturday Afternoon | Snow Level | 3000' | 3000' | 4500' | 5000' | 4000' | 3500' | 4500' | 6000' |
| Saturday Evening | Snow Level | 3000' | 2500' | 3000' | 4000' | 3000' | 3000' | 3500' | 5000' |
| Saturday Night | Snow Level | 2500' | 2000' | 2000' | 2500' | 2500' | 2500' | 3000' | 3500' |
| Sunday Morning | Freezing Level | 2500' | 2000' | 2000' | 2500' | 2500' | 2500' | 3000' | 3000' |
| Sunday Afternoon | Snow Level | 3500' | 3000' | 3000' | 3500' | 3500' | 3500' | 3500' | 3500' |
| Hurricane Ridge | Elevation |
|---|---|
| Saturday Morning |
Snow Level 3000' |
| Saturday Afternoon |
Snow Level 3000' |
| Saturday Evening |
Snow Level 3000' |
| Saturday Night |
Snow Level 2500' |
| Sunday Morning |
Freezing Level 2500' |
| Sunday Afternoon |
Snow Level 3500' |
| Mt. Baker | Elevation |
|---|---|
| Saturday Morning |
Snow Level 3000' |
| Saturday Afternoon |
Snow Level 3000' |
| Saturday Evening |
Snow Level 2500' |
| Saturday Night |
Snow Level 2000' |
| Sunday Morning |
Freezing Level 2000' |
| Sunday Afternoon |
Snow Level 3000' |
| Washington Pass | Elevation |
|---|---|
| Saturday Morning |
Snow Level 5000' |
| Saturday Afternoon |
Snow Level 4500' |
| Saturday Evening |
Snow Level 3000' |
| Saturday Night |
Snow Level 2000' |
| Sunday Morning |
Freezing Level 2000' |
| Sunday Afternoon |
Snow Level 3000' |
| Leavenworth | Elevation |
|---|---|
| Saturday Morning |
Snow Level 5000' |
| Saturday Afternoon |
Snow Level 5000' |
| Saturday Evening |
Snow Level 4000' |
| Saturday Night |
Snow Level 2500' |
| Sunday Morning |
Freezing Level 2500' |
| Sunday Afternoon |
Snow Level 3500' |
| Stevens Pass | Elevation |
|---|---|
| Saturday Morning |
Snow Level 4500' |
| Saturday Afternoon |
Snow Level 4000' |
| Saturday Evening |
Snow Level 3000' |
| Saturday Night |
Snow Level 2500' |
| Sunday Morning |
Freezing Level 2500' |
| Sunday Afternoon |
Snow Level 3500' |
| Snoqualmie Pass | Elevation |
|---|---|
| Saturday Morning |
Snow Level 4500' |
| Saturday Afternoon |
Snow Level 3500' |
| Saturday Evening |
Snow Level 3000' |
| Saturday Night |
Snow Level 2500' |
| Sunday Morning |
Freezing Level 2500' |
| Sunday Afternoon |
Snow Level 3500' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Saturday Morning |
Snow Level 5000' |
| Saturday Afternoon |
Snow Level 4500' |
| Saturday Evening |
Snow Level 3500' |
| Saturday Night |
Snow Level 3000' |
| Sunday Morning |
Freezing Level 3000' |
| Sunday Afternoon |
Snow Level 3500' |
| Mt. Hood | Elevation |
|---|---|
| Saturday Morning |
Snow Level 6500' |
| Saturday Afternoon |
Snow Level 6000' |
| Saturday Evening |
Snow Level 5000' |
| Saturday Night |
Snow Level 3500' |
| Sunday Morning |
Freezing Level 3000' |
| Sunday Afternoon |
Snow Level 3500' |
* 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
| Saturday | Saturday Night | Monday | |
|---|---|---|---|
| 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | 0.25 - 0.50 | 0 | 0 |
| Mt Baker Ski Area | 0.75 | 0 | 0 |
| Washington Pass | 0.25 | 0 | 0 |
| Leavenworth | LT 0.25 | 0 | 0 |
| Stevens Pass | 0.25 - 0.50 | LT 0.10 | 0 |
| Snoqualmie Pass | 0.50 - 0.75 | LT 0.10 | LT 0.10 |
| Mission Ridge | LT 0.10 | 0 | LT 0.10 |
| Crystal Mt | 0.75 | LT 0.10 | LT 0.10 |
| Paradise | 0.75 | LT 0.10 | LT 0.10 |
| White Pass | 0.50 - 0.75 | LT 0.10 | LT 0.10 |
| Mt Hood Meadows | 0.25 - 0.50 | LT 0.25 | LT 0.25 |
| Timberline | 0.25 - 0.50 | LT 0.25 | LT 0.25 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Saturday | 0.25 - 0.50 |
| Saturday Night | 0 |
| Monday | 0 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Saturday | 0.75 |
| Saturday Night | 0 |
| Monday | 0 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Saturday | 0.25 |
| Saturday Night | 0 |
| Monday | 0 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Saturday | LT 0.25 |
| Saturday Night | 0 |
| Monday | 0 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Saturday | 0.25 - 0.50 |
| Saturday Night | LT 0.10 |
| Monday | 0 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Saturday | 0.50 - 0.75 |
| Saturday Night | LT 0.10 |
| Monday | LT 0.10 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Saturday | LT 0.10 |
| Saturday Night | 0 |
| Monday | LT 0.10 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Saturday | 0.75 |
| Saturday Night | LT 0.10 |
| Monday | LT 0.10 |
| Paradise | Precipitation Forecast |
|---|---|
| Saturday | 0.75 |
| Saturday Night | LT 0.10 |
| Monday | LT 0.10 |
| White Pass | Precipitation Forecast |
|---|---|
| Saturday | 0.50 - 0.75 |
| Saturday Night | LT 0.10 |
| Monday | LT 0.10 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Saturday | 0.25 - 0.50 |
| Saturday Night | LT 0.25 |
| Monday | LT 0.25 |
| Timberline | Precipitation Forecast |
|---|---|
| Saturday | 0.25 - 0.50 |
| Saturday Night | LT 0.25 |
| Monday | LT 0.25 |
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: 7:08 AM PST Saturday, December 21, 2019
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Saturday Morning | SW 5 - 15 | SW 0 - 10 | SW 15 - 25 | SW 20 - 30 | SW 20 - 30 |
| Saturday Afternoon | W 0 - 10 | W 0 - 10 | SW 10 - 20 | SW 15 - 25 | SW 15 - 25 |
| Saturday Evening | SW 5 - 15 | W 0 - 10 | W 5 - 15 | W 0 - 10 | W 10 - 20 |
| Saturday Night | SW 0 - 10 | W 0 - 10 | W 5 - 15 | W 0 - 10 | WNW 5 - 15 |
| Sunday Morning | SW 0 - 10 | S 0 - 10 | NW 5 - 15 | NW 0 - 10 | NE 5 - 15 |
| Sunday Afternoon | VAR 0 - 10 | NE 0 - 10 | NW 0 - 10 | NNW 0 - 10 | N 0 - 10 |
| Hurricane Ridge | Elevation |
|---|---|
| Saturday Morning | SW 5 - 15 |
| Saturday Afternoon | W 0 - 10 |
| Saturday Evening | SW 5 - 15 |
| Saturday Night | SW 0 - 10 |
| Sunday Morning | SW 0 - 10 |
| Sunday Afternoon | VAR 0 - 10 |
| Mt. Baker | Elevation |
|---|---|
| Saturday Morning | SW 0 - 10 |
| Saturday Afternoon | W 0 - 10 |
| Saturday Evening | W 0 - 10 |
| Saturday Night | W 0 - 10 |
| Sunday Morning | S 0 - 10 |
| Sunday Afternoon | NE 0 - 10 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Saturday Morning | SW 15 - 25 |
| Saturday Afternoon | SW 10 - 20 |
| Saturday Evening | W 5 - 15 |
| Saturday Night | W 5 - 15 |
| Sunday Morning | NW 5 - 15 |
| Sunday Afternoon | NW 0 - 10 |
| Mt. Rainier | Elevation |
|---|---|
| Saturday Morning | SW 20 - 30 |
| Saturday Afternoon | SW 15 - 25 |
| Saturday Evening | W 0 - 10 |
| Saturday Night | W 0 - 10 |
| Sunday Morning | NW 0 - 10 |
| Sunday Afternoon | NNW 0 - 10 |
| Mt. Hood | Elevation |
|---|---|
| Saturday Morning | SW 20 - 30 |
| Saturday Afternoon | SW 15 - 25 |
| Saturday Evening | W 10 - 20 |
| Saturday Night | WNW 5 - 15 |
| Sunday Morning | NE 5 - 15 |
| Sunday Afternoon | N 0 - 10 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Saturday Morning | SW 5 - 15 |
| Saturday Afternoon | W 0 - 10 |
| Saturday Evening | SW 5 - 15 |
| Saturday Night | SW 0 - 10 |
| Sunday Morning | SW 0 - 10 |
| Sunday Afternoon | VAR 0 - 10 |
| Mt. Baker | Direction - Speed |
|---|---|
| Saturday Morning | SW 0 - 10 |
| Saturday Afternoon | W 0 - 10 |
| Saturday Evening | W 0 - 10 |
| Saturday Night | W 0 - 10 |
| Sunday Morning | S 0 - 10 |
| Sunday Afternoon | NE 0 - 10 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Saturday Morning | SW 15 - 25 |
| Saturday Afternoon | SW 10 - 20 |
| Saturday Evening | W 5 - 15 |
| Saturday Night | W 5 - 15 |
| Sunday Morning | NW 5 - 15 |
| Sunday Afternoon | NW 0 - 10 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Saturday Morning | SW 20 - 30 |
| Saturday Afternoon | SW 15 - 25 |
| Saturday Evening | W 0 - 10 |
| Saturday Night | W 0 - 10 |
| Sunday Morning | NW 0 - 10 |
| Sunday Afternoon | NNW 0 - 10 |
| Mt. Hood | Direction - Speed |
|---|---|
| Saturday Morning | SW 20 - 30 |
| Saturday Afternoon | SW 15 - 25 |
| Saturday Evening | W 10 - 20 |
| Saturday Night | WNW 5 - 15 |
| Sunday Morning | NE 5 - 15 |
| Sunday Afternoon | N 0 - 10 |
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 | |
|---|---|---|---|---|---|
| Saturday Morning | SW 20 - 30 | SW 20 - 30 | SW 30 - 40 | SW 50 - 60 | SW 60 - 80 |
| Saturday Afternoon | W 10 - 20 | SW 10 - 20 | SW 25 - 35 | SW 40 - 50 | SW 50 - 70 |
| Saturday Evening | W 5 - 15 | SW 5 - 15 | W 15 - 25 | SW 20 - 30 | SW 25 - 35 |
| Saturday Night | W 10 - 20 | W 5 - 15 | W 10 - 20 | W 15 - 25 | SW 20 - 30 |
| Sunday Morning | SW 0 - 10 | SW 0 - 10 | SW 5 - 15 | SW 0 - 10 | SW 10 - 20 |
| Sunday Afternoon | S 0 - 10 | S 0 - 10 | S 5 - 15 | S 10 - 20 | S 15 - 25 |
| Mt. Baker | Direction - Speed |
|---|---|
| Saturday Morning | SW 20 - 30 |
| Saturday Afternoon | W 10 - 20 |
| Saturday Evening | W 5 - 15 |
| Saturday Night | W 10 - 20 |
| Sunday Morning | SW 0 - 10 |
| Sunday Afternoon | S 0 - 10 |
| Washington Pass | Direction - Speed |
|---|---|
| Saturday Morning | SW 20 - 30 |
| Saturday Afternoon | SW 10 - 20 |
| Saturday Evening | SW 5 - 15 |
| Saturday Night | W 5 - 15 |
| Sunday Morning | SW 0 - 10 |
| Sunday Afternoon | S 0 - 10 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Saturday Morning | SW 30 - 40 |
| Saturday Afternoon | SW 25 - 35 |
| Saturday Evening | W 15 - 25 |
| Saturday Night | W 10 - 20 |
| Sunday Morning | SW 5 - 15 |
| Sunday Afternoon | S 5 - 15 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Saturday Morning | SW 50 - 60 |
| Saturday Afternoon | SW 40 - 50 |
| Saturday Evening | SW 20 - 30 |
| Saturday Night | W 15 - 25 |
| Sunday Morning | SW 0 - 10 |
| Sunday Afternoon | S 10 - 20 |
| Mt. Hood | Direction - Speed |
|---|---|
| Saturday Morning | SW 60 - 80 |
| Saturday Afternoon | SW 50 - 70 |
| Saturday Evening | SW 25 - 35 |
| Saturday Night | SW 20 - 30 |
| Sunday Morning | SW 10 - 20 |
| Sunday Afternoon | S 15 - 25 |
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 Dec 20, 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.