Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Weather Synopsis for Monday night through Saturday
There's a mixed bag of cloud cover and visibility out there as an upper-level trough exits our region and an upper-level ridge moves overhead. On satellite (and web cams) you see the upper portions of volcanoes reaching into the drier air aloft. A few scattered showers remain along the west slopes of the Cascades and Mt. Hood but otherwise, a drying and partial clearing trend should continue through Tuesday morning.
A weak Pacific frontal system should reach the Washington/Oregon coast by late Tuesday afternoon potentially bringing very light rain and snow to the Olympics. After a partly to mostly sunny start to the day for many Cascade locations, this system will spread clouds inland during the afternoon with cloud ceilings lowering late in the day. The associated upper-level trough digs off the California coast Tuesday night and as it does, the frontal band positioned along the coast will weaken significantly as it pushes inland.
Little to no moisture is expected Tuesday night and Wednesday from this weak system but skies will likely remain overcast. Snow/freezing levels will remain on the cool side during this period and no significant winds are expected.
Weather Forecast
Hurricane Ridge
| Monday Night | Partly cloudy. |
| Tuesday | Partly cloudy becoming overcast in the afternoon with a chance of light rain or snow. |
Mt. Baker
| Monday Night | Partly to mostly cloudy becoming mostly clear overnight. |
| Tuesday | Partly to mostly sunny in the morning becoming cloudy in the afternoon. |
Washington Pass and Leavenworth
| Monday Night | Partly to mostly cloudy becoming mostly clear overnight. |
| Tuesday | Partly to mostly sunny in the morning becoming cloudy late in the day. |
Stevens and Snoqualmie Pass
| Monday Night | Cloudy in the evening, becoming partly cloudy overnight. Light west wind in the Passes. |
| Tuesday | Partly to mostly sunny in the morning becoming cloudy in the afternoon. Light east wind in the Passes. |
Mt. Rainier, Crystal and White Pass
| Monday Night | Cloudy in the evening, becoming partly cloudy overnight. |
| Tuesday | Partly to mostly sunny in the morning becoming cloudy in the afternoon. |
Mt. Hood
| Monday Night | Mostly cloudy in the evening, becoming mostly clear overnight. |
| Tuesday | Partly to mostly sunny in the morning becoming cloudy in the afternoon. |
Issued: 1:47 PM PST Monday, December 23, 2019
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Monday Evening | Freezing Level | 1500' | 1500' | 1500' | 2000' | 2000' | 2000' | 2000' | 2500' |
| Monday Night | Freezing Level | 1500' | 1000' | 0' | 1000' | 1000' | 1000' | 1000' | 1500' |
| Tuesday Morning | Freezing Level * | 1500' | 1000' | 0' | 1000' | 1000' | 1000' | 1000' | 1500' |
| Tuesday Afternoon | Freezing Level * | 3000' | 1500' | 1000' | 1500' | 1500' | 2000' | 2000' | 3000' |
| Tuesday Evening | Freezing Level * | 2500' | 1000' | 1000' | 1000' | 1000' | 1500' | 1500' | 2000' |
| Tuesday Night | Snow Level * | 2000' | 1000' | 0' | 0' | 1000' | 1000' | 1500' | 1500' |
| Wednesday Morning | Snow Level * | 2500' | 1500' | 0' | 0' | 1500' | 1500' | 2000' | 2500' |
| Wednesday Afternoon | Snow Level * | 2500' | 1500' | 1000' | 1000' | 1500' | 1500' | 2000' | 2500' |
| Hurricane Ridge | Elevation |
|---|---|
| Monday Evening |
Freezing Level 1500' |
| Monday Night |
Freezing Level 1500' |
| Tuesday Morning |
Freezing Level 1500' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 3000' (Easterly Flow *) |
| Tuesday Evening |
Freezing Level 2500' (Easterly Flow *) |
| Tuesday Night |
Snow Level 2000' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 2500' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 2500' (Easterly Flow *) |
| Mt. Baker | Elevation |
|---|---|
| Monday Evening |
Freezing Level 1500' |
| Monday Night |
Freezing Level 1000' |
| Tuesday Morning |
Freezing Level 1000' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 1500' (Easterly Flow *) |
| Tuesday Evening |
Freezing Level 1000' (Easterly Flow *) |
| Tuesday Night |
Snow Level 1000' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 1500' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 1500' (Easterly Flow *) |
| Washington Pass | Elevation |
|---|---|
| Monday Evening |
Freezing Level 1500' |
| Monday Night |
Freezing Level 0' |
| Tuesday Morning |
Freezing Level 0' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 1000' (Easterly Flow *) |
| Tuesday Evening |
Freezing Level 1000' (Easterly Flow *) |
| Tuesday Night |
Snow Level 0' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 0' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 1000' (Easterly Flow *) |
| Leavenworth | Elevation |
|---|---|
| Monday Evening |
Freezing Level 2000' |
| Monday Night |
Freezing Level 1000' |
| Tuesday Morning |
Freezing Level 1000' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 1500' (Easterly Flow *) |
| Tuesday Evening |
Freezing Level 1000' (Easterly Flow *) |
| Tuesday Night |
Snow Level 0' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 0' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 1000' (Easterly Flow *) |
| Stevens Pass | Elevation |
|---|---|
| Monday Evening |
Freezing Level 2000' |
| Monday Night |
Freezing Level 1000' |
| Tuesday Morning |
Freezing Level 1000' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 1500' (Easterly Flow *) |
| Tuesday Evening |
Freezing Level 1000' (Easterly Flow *) |
| Tuesday Night |
Snow Level 1000' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 1500' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 1500' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Monday Evening |
Freezing Level 2000' |
| Monday Night |
Freezing Level 1000' |
| Tuesday Morning |
Freezing Level 1000' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 2000' (Easterly Flow *) |
| Tuesday Evening |
Freezing Level 1500' (Easterly Flow *) |
| Tuesday Night |
Snow Level 1000' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 1500' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 1500' (Easterly Flow *) |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Monday Evening |
Freezing Level 2000' |
| Monday Night |
Freezing Level 1000' |
| Tuesday Morning |
Freezing Level 1000' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 2000' (Easterly Flow *) |
| Tuesday Evening |
Freezing Level 1500' (Easterly Flow *) |
| Tuesday Night |
Snow Level 1500' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 2000' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 2000' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Monday Evening |
Freezing Level 2500' |
| Monday Night |
Freezing Level 1500' |
| Tuesday Morning |
Freezing Level 1500' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 3000' (Easterly Flow *) |
| Tuesday Evening |
Freezing Level 2000' (Easterly Flow *) |
| Tuesday Night |
Snow Level 1500' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 2500' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 2500' (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
| Monday Night | Saturday | Saturday Night | Saturday | |
|---|---|---|---|---|
| 4 pm - 4 am | 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | 0 | LT 0.10 | LT 0.10 | LT 0.10 |
| Mt Baker Ski Area | 0 | 0 | 0 | LT 0.10 |
| Washington Pass | 0 | 0 | 0 | LT 0.10 |
| Leavenworth | 0 | 0 | 0 | LT 0.10 |
| Stevens Pass | 0 | 0 | 0 | LT 0.10 |
| Snoqualmie Pass | 0 | 0 | 0 | LT 0.10 |
| Mission Ridge | 0 | 0 | 0 | LT 0.10 |
| Crystal Mt | 0 | 0 | 0 | LT 0.10 |
| Paradise | 0 | 0 | 0 | LT 0.10 |
| White Pass | 0 | 0 | 0 | LT 0.10 |
| Mt Hood Meadows | 0 | 0 | 0 | LT 0.10 |
| Timberline | 0 | 0 | 0 | LT 0.10 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Monday Night | 0 |
| Saturday | LT 0.10 |
| Saturday Night | LT 0.10 |
| Saturday | LT 0.10 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Monday Night | 0 |
| Saturday | 0 |
| Saturday Night | 0 |
| Saturday | LT 0.10 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Monday Night | 0 |
| Saturday | 0 |
| Saturday Night | 0 |
| Saturday | LT 0.10 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Monday Night | 0 |
| Saturday | 0 |
| Saturday Night | 0 |
| Saturday | LT 0.10 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Monday Night | 0 |
| Saturday | 0 |
| Saturday Night | 0 |
| Saturday | LT 0.10 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Monday Night | 0 |
| Saturday | 0 |
| Saturday Night | 0 |
| Saturday | LT 0.10 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Monday Night | 0 |
| Saturday | 0 |
| Saturday Night | 0 |
| Saturday | LT 0.10 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Monday Night | 0 |
| Saturday | 0 |
| Saturday Night | 0 |
| Saturday | LT 0.10 |
| Paradise | Precipitation Forecast |
|---|---|
| Monday Night | 0 |
| Saturday | 0 |
| Saturday Night | 0 |
| Saturday | LT 0.10 |
| White Pass | Precipitation Forecast |
|---|---|
| Monday Night | 0 |
| Saturday | 0 |
| Saturday Night | 0 |
| Saturday | LT 0.10 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Monday Night | 0 |
| Saturday | 0 |
| Saturday Night | 0 |
| Saturday | LT 0.10 |
| Timberline | Precipitation Forecast |
|---|---|
| Monday Night | 0 |
| Saturday | 0 |
| Saturday Night | 0 |
| Saturday | LT 0.10 |
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: 1:47 PM PST Monday, December 23, 2019
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Monday Evening | SW 0 - 10 | SW 0 - 10 | W 0 - 10 | W 0 - 10 | W 5 - 15 |
| Monday Night | SW 5 - 15 | SW 0 - 10 | W 0 - 10 | W 0 - 10 | W 0 - 10 |
| Tuesday Morning | SW 5 - 15 | SW 0 - 10 | W 0 - 10 | W 0 - 10 | W 0 - 10 |
| Tuesday Afternoon | S 10 - 20 | SW 0 - 10 | W 0 - 10 | W 0 - 10 | W 5 - 15 |
| Hurricane Ridge | Elevation |
|---|---|
| Monday Evening | SW 0 - 10 |
| Monday Night | SW 5 - 15 |
| Tuesday Morning | SW 5 - 15 |
| Tuesday Afternoon | S 10 - 20 |
| Mt. Baker | Elevation |
|---|---|
| Monday Evening | SW 0 - 10 |
| Monday Night | SW 0 - 10 |
| Tuesday Morning | SW 0 - 10 |
| Tuesday Afternoon | SW 0 - 10 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Monday Evening | W 0 - 10 |
| Monday Night | W 0 - 10 |
| Tuesday Morning | W 0 - 10 |
| Tuesday Afternoon | W 0 - 10 |
| Mt. Rainier | Elevation |
|---|---|
| Monday Evening | W 0 - 10 |
| Monday Night | W 0 - 10 |
| Tuesday Morning | W 0 - 10 |
| Tuesday Afternoon | W 0 - 10 |
| Mt. Hood | Elevation |
|---|---|
| Monday Evening | W 5 - 15 |
| Monday Night | W 0 - 10 |
| Tuesday Morning | W 0 - 10 |
| Tuesday Afternoon | W 5 - 15 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Monday Evening | SW 0 - 10 |
| Monday Night | SW 5 - 15 |
| Tuesday Morning | SW 5 - 15 |
| Tuesday Afternoon | S 10 - 20 |
| Mt. Baker | Direction - Speed |
|---|---|
| Monday Evening | SW 0 - 10 |
| Monday Night | SW 0 - 10 |
| Tuesday Morning | SW 0 - 10 |
| Tuesday Afternoon | SW 0 - 10 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Monday Evening | W 0 - 10 |
| Monday Night | W 0 - 10 |
| Tuesday Morning | W 0 - 10 |
| Tuesday Afternoon | W 0 - 10 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Monday Evening | W 0 - 10 |
| Monday Night | W 0 - 10 |
| Tuesday Morning | W 0 - 10 |
| Tuesday Afternoon | W 0 - 10 |
| Mt. Hood | Direction - Speed |
|---|---|
| Monday Evening | W 5 - 15 |
| Monday Night | W 0 - 10 |
| Tuesday Morning | W 0 - 10 |
| Tuesday 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 | |
|---|---|---|---|---|---|
| Monday Evening | W 0 - 10 | SW 0 - 10 | WNW 0 - 10 | NW 0 - 10 | NW 0 - 10 |
| Monday Night | SW 5 - 15 | SW 5 - 15 | SW 10 - 20 | W 5 - 15 | W 0 - 10 |
| Tuesday Morning | W 10 - 20 | W 5 - 15 | W 10 - 20 | W 10 - 20 | W 5 - 15 |
| Tuesday Afternoon | WNW 10 - 20 | W 5 - 15 | NW 10 - 20 | NW 10 - 20 | W 10 - 20 |
| Mt. Baker | Direction - Speed |
|---|---|
| Monday Evening | W 0 - 10 |
| Monday Night | SW 5 - 15 |
| Tuesday Morning | W 10 - 20 |
| Tuesday Afternoon | WNW 10 - 20 |
| Washington Pass | Direction - Speed |
|---|---|
| Monday Evening | SW 0 - 10 |
| Monday Night | SW 5 - 15 |
| Tuesday Morning | W 5 - 15 |
| Tuesday Afternoon | W 5 - 15 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Monday Evening | WNW 0 - 10 |
| Monday Night | SW 10 - 20 |
| Tuesday Morning | W 10 - 20 |
| Tuesday Afternoon | NW 10 - 20 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Monday Evening | NW 0 - 10 |
| Monday Night | W 5 - 15 |
| Tuesday Morning | W 10 - 20 |
| Tuesday Afternoon | NW 10 - 20 |
| Mt. Hood | Direction - Speed |
|---|---|
| Monday Evening | NW 0 - 10 |
| Monday Night | W 0 - 10 |
| Tuesday Morning | W 5 - 15 |
| Tuesday Afternoon | W 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.
Issued: 1:47 PM PST Monday, December 23, 2019
Extended Weather Synopsis for Saturday night through Saturday
A stronger upper level ridge will move over the area Wednesday night and Thursday for continued fair weather. The ridge will begin to break down as a frontal system approaches the area in NW flow aloft. By splitting the difference between the main operational weather models, light precipitation may spread into the Olympics and the north Cascades Thursday night and Friday before the upper-level ridge rebuilds and shunts precipitation to our north. While the long range forecast does not look completely dry, it's hard to pick out the next big storm with any confidence in the next 7 days.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Wednesday Night | Freezing Level | 0' - 1000' | 0' - 1000' | 500' - 1500' | * |
| Thursday | Freezing Level | 1000' - 2000' | 1500' - 2500' | 2500' - 3500' | |
| Thursday Night | Freezing Level | 1000' - 2000' | 1500' - 25000' | 3000' - 4000' | |
| Friday | Snow Level | 1500' - 2500' | 2500' - 3500' | 4000' - 5000' |
| Mt. Baker | Elevation |
|---|---|
| Wednesday Night |
Freezing Level 0' - 1000' (Easterly Flow *) |
| Thursday |
Freezing Level 1000' - 2000' |
| Thursday Night |
Freezing Level 1000' - 2000' |
| Friday |
Snow Level 1500' - 2500' |
| Snoqualmie Pass | Elevation |
|---|---|
| Wednesday Night |
Freezing Level 0' - 1000' (Easterly Flow *) |
| Thursday |
Freezing Level 1500' - 2500' |
| Thursday Night |
Freezing Level 1500' - 25000' |
| Friday |
Snow Level 2500' - 3500' |
| Mt. Hood | Elevation |
|---|---|
| Wednesday Night |
Freezing Level 500' - 1500' (Easterly Flow *) |
| Thursday |
Freezing Level 2500' - 3500' |
| Thursday Night |
Freezing Level 3000' - 4000' |
| Friday |
Snow Level 4000' - 5000' |
* 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 Dec 23, 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.