Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Weather Synopsis for Sunday night through Wednesday
A weak warm frontal feature is bringing periods of light rain and snow to the region on Sunday. Precipitation should continue into the evening hours for most areas before stalling over the North Cascades where it will dissipate through Monday morning (as it's parent low cuts off and moves southward off the California Coast).
The bigger story is the temperature trend. Areas west of the Cascade Crest have been moderating on Sunday and will continue to do so through Tuesday night. However, east of the Cascade Crest, temperatures are still quite cold with a decreasing E flow should keep the Cascade Passes and E slopes below freezing through mid-morning on Monday. Late Monday morning, we expect a shift to W flow at the passes and sharp warming for Snoqualmie and Stevens Passes and some locations along the E slopes with above freezing temperatures arriving to lower elevations.
Most areas can expect fair weather Monday afternoon through Monday night, although it is possible that some moisture will work into the Baker area ahead of a weak system gradually sagging southeastward toward the Pacific Northwest on Tuesday. By Tuesday, expect light rain with high elevation snow from this system spreading southward and increasing across the northern Washington half of state on Tuesday.
Weather Forecast
Hurricane Ridge
| Sunday Night | Cloudy with a chance of snow flurries, particularly during the evening hours. Becoming partly clear by morning. Gradual warming. |
| Monday | Partly cloudy with a slight chance of a snow flurry or sprinkle. Gradual warming. |
Mt. Baker
| Sunday Night | Cloudy with periods of light snow. Gradual warming. |
| Monday | Cloudy with periods of light rain and snow, particularly in the morning hours. Gradual warming. |
Washington Pass and Leavenworth
| Sunday Night | Mostly cloudy and cool with a chance of very light snow. |
| Monday | Mostly cloudy and gradually warming. Chance of snow flurries, mainly in the morning. |
Stevens and Snoqualmie Pass
| Sunday Night | Mostly cloudy and cool with a chance of very light snow. |
| Monday | Mostly cloudy with a chance of snow flurries in the morning. Light E winds becoming light W winds in the afternoon. Rapidly warming to above freezing temperatures at pass level associated with the wind shift. |
Mt. Rainier, Crystal and White Pass
| Sunday Night | Mostly cloudy and cool with a chance of very light snow. |
| Monday | Mostly cloudy early with a few snow flurries possible, then becoming partly sunny. |
Mt. Hood
| Sunday Night | Periods of very light snow, mainly in the evening then clearing skies. |
| Monday | Mostly sunny. |
Issued: 2:38 PM PST Sunday, December 1, 2019
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Sunday Evening | Snow Level * | 3500' | 2500' | 1500' | 1000' | 2000' | 2500' | 3500' | 2000' |
| Sunday Night | Snow Level * | 4000' | 3000' | 1500' | 1000' | 2500' | 3000' | 4000' | 2000' |
| Monday Morning | Snow Level * | 4500' | 3500' | 2000' | 1000' | 3500' | 3500' | 4000' | 3000' |
| Monday Afternoon | Snow Level * | 5000' | 4000' | 4000' | 3000' | 4500' | 4500' | 5000' | 6000' |
| Monday Evening | Freezing Level * | 5500' | 5000' | 4500' | 4000' | 5000' | 5500' | 5500' | 7000' |
| Monday Night | Freezing Level * | 5500' | 4500' | 3500' | 3000' | 5000' | 5500' | 5000' | 6500' |
| Tuesday Morning | Snow Level * | 5000' | 4000' | 3000' | 3000' | 4500' | 5000' | 5000' | 6000' |
| Tuesday Afternoon | Snow Level * | 5500' | 4500' | 4000' | 4500' | 5500' | 5500' | 5500' | 6000' |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Evening |
Snow Level 3500' (Easterly Flow *) |
| Sunday Night |
Snow Level 4000' (Easterly Flow *) |
| Monday Morning |
Snow Level 4500' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 5000' (Easterly Flow *) |
| Monday Evening |
Freezing Level 5500' (Easterly Flow *) |
| Monday Night |
Freezing Level 5500' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 5000' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 5500' (Easterly Flow *) |
| Mt. Baker | Elevation |
|---|---|
| Sunday Evening |
Snow Level 2500' (Easterly Flow *) |
| Sunday Night |
Snow Level 3000' (Easterly Flow *) |
| Monday Morning |
Snow Level 3500' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 4000' (Easterly Flow *) |
| Monday Evening |
Freezing Level 5000' (Easterly Flow *) |
| Monday Night |
Freezing Level 4500' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 4000' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 4500' (Easterly Flow *) |
| Washington Pass | Elevation |
|---|---|
| Sunday Evening |
Snow Level 1500' (Easterly Flow *) |
| Sunday Night |
Snow Level 1500' (Easterly Flow *) |
| Monday Morning |
Snow Level 2000' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 4000' (Easterly Flow *) |
| Monday Evening |
Freezing Level 4500' (Easterly Flow *) |
| Monday Night |
Freezing Level 3500' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 3000' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 4000' (Easterly Flow *) |
| Leavenworth | Elevation |
|---|---|
| Sunday Evening |
Snow Level 1000' (Easterly Flow *) |
| Sunday Night |
Snow Level 1000' (Easterly Flow *) |
| Monday Morning |
Snow Level 1000' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 3000' (Easterly Flow *) |
| Monday Evening |
Freezing Level 4000' (Easterly Flow *) |
| Monday Night |
Freezing Level 3000' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 3000' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 4500' (Easterly Flow *) |
| Stevens Pass | Elevation |
|---|---|
| Sunday Evening |
Snow Level 2000' (Easterly Flow *) |
| Sunday Night |
Snow Level 2500' (Easterly Flow *) |
| Monday Morning |
Snow Level 3500' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 4500' (Easterly Flow *) |
| Monday Evening |
Freezing Level 5000' (Easterly Flow *) |
| Monday Night |
Freezing Level 5000' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 4500' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 5500' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Sunday Evening |
Snow Level 2500' (Easterly Flow *) |
| Sunday Night |
Snow Level 3000' (Easterly Flow *) |
| Monday Morning |
Snow Level 3500' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 4500' (Easterly Flow *) |
| Monday Evening |
Freezing Level 5500' (Easterly Flow *) |
| Monday Night |
Freezing Level 5500' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 5000' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 5500' (Easterly Flow *) |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Sunday Evening |
Snow Level 3500' (Easterly Flow *) |
| Sunday Night |
Snow Level 4000' (Easterly Flow *) |
| Monday Morning |
Snow Level 4000' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 5000' (Easterly Flow *) |
| Monday Evening |
Freezing Level 5500' (Easterly Flow *) |
| Monday Night |
Freezing Level 5000' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 5000' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 5500' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Sunday Evening |
Snow Level 2000' (Easterly Flow *) |
| Sunday Night |
Snow Level 2000' (Easterly Flow *) |
| Monday Morning |
Snow Level 3000' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 6000' (Easterly Flow *) |
| Monday Evening |
Freezing Level 7000' (Easterly Flow *) |
| Monday Night |
Freezing Level 6500' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 6000' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 6000' (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
| Sunday Night | Wednesday | Wednesday Night | Wednesday | |
|---|---|---|---|---|
| 4 pm - 4 am | 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | 0 | 0 | 0 | 0 |
| Mt Baker Ski Area | LT 0.10 | LT 0.10 | 0 | LT 0.25 |
| Washington Pass | LT 0.10 | 0 | 0 | 0 |
| Leavenworth | LT 0.10 | 0 | 0 | 0 |
| Stevens Pass | LT 0.10 | 0 | 0 | 0 |
| Snoqualmie Pass | LT 0.10 | 0 | 0 | 0 |
| Mission Ridge | LT 0.10 | 0 | 0 | 0 |
| Crystal Mt | LT 0.10 | 0 | 0 | 0 |
| Paradise | LT 0.10 | 0 | 0 | 0 |
| White Pass | 0 | 0 | 0 | 0 |
| Mt Hood Meadows | LT 0.10 | 0 | 0 | 0 |
| Timberline | LT 0.10 | 0 | 0 | 0 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Wednesday | 0 |
| Wednesday Night | 0 |
| Wednesday | 0 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Sunday Night | LT 0.10 |
| Wednesday | LT 0.10 |
| Wednesday Night | 0 |
| Wednesday | LT 0.25 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Sunday Night | LT 0.10 |
| Wednesday | 0 |
| Wednesday Night | 0 |
| Wednesday | 0 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Sunday Night | LT 0.10 |
| Wednesday | 0 |
| Wednesday Night | 0 |
| Wednesday | 0 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Sunday Night | LT 0.10 |
| Wednesday | 0 |
| Wednesday Night | 0 |
| Wednesday | 0 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Sunday Night | LT 0.10 |
| Wednesday | 0 |
| Wednesday Night | 0 |
| Wednesday | 0 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Sunday Night | LT 0.10 |
| Wednesday | 0 |
| Wednesday Night | 0 |
| Wednesday | 0 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Sunday Night | LT 0.10 |
| Wednesday | 0 |
| Wednesday Night | 0 |
| Wednesday | 0 |
| Paradise | Precipitation Forecast |
|---|---|
| Sunday Night | LT 0.10 |
| Wednesday | 0 |
| Wednesday Night | 0 |
| Wednesday | 0 |
| White Pass | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Wednesday | 0 |
| Wednesday Night | 0 |
| Wednesday | 0 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Sunday Night | LT 0.10 |
| Wednesday | 0 |
| Wednesday Night | 0 |
| Wednesday | 0 |
| Timberline | Precipitation Forecast |
|---|---|
| Sunday Night | LT 0.10 |
| Wednesday | 0 |
| Wednesday Night | 0 |
| Wednesday | 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: 2:38 PM PST Sunday, December 1, 2019
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Sunday Evening | SW 0 - 10 | S 5 - 15 | SSW 0 - 10 | SSW 0 - 10 | S 5 - 15 |
| Sunday Night | SW 5 - 15 | SW 5 - 15 | WSW 5 - 15 | WSW 5 - 15 | SW 5 - 15 |
| Monday Morning | WSW 5 - 15 | SW 5 - 15 | WSW 10 - 20 | WSW 5 - 15 | W 0 - 10 |
| Monday Afternoon | W 5 - 15 | SW 10 - 20 | W 10 - 20 | W 5 - 15 | WNW 5 - 15 |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Evening | SW 0 - 10 |
| Sunday Night | SW 5 - 15 |
| Monday Morning | WSW 5 - 15 |
| Monday Afternoon | W 5 - 15 |
| Mt. Baker | Elevation |
|---|---|
| Sunday Evening | S 5 - 15 |
| Sunday Night | SW 5 - 15 |
| Monday Morning | SW 5 - 15 |
| Monday Afternoon | SW 10 - 20 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Sunday Evening | SSW 0 - 10 |
| Sunday Night | WSW 5 - 15 |
| Monday Morning | WSW 10 - 20 |
| Monday Afternoon | W 10 - 20 |
| Mt. Rainier | Elevation |
|---|---|
| Sunday Evening | SSW 0 - 10 |
| Sunday Night | WSW 5 - 15 |
| Monday Morning | WSW 5 - 15 |
| Monday Afternoon | W 5 - 15 |
| Mt. Hood | Elevation |
|---|---|
| Sunday Evening | S 5 - 15 |
| Sunday Night | SW 5 - 15 |
| Monday Morning | W 0 - 10 |
| Monday Afternoon | WNW 5 - 15 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Sunday Evening | SW 0 - 10 |
| Sunday Night | SW 5 - 15 |
| Monday Morning | WSW 5 - 15 |
| Monday Afternoon | W 5 - 15 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Evening | S 5 - 15 |
| Sunday Night | SW 5 - 15 |
| Monday Morning | SW 5 - 15 |
| Monday Afternoon | SW 10 - 20 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Evening | SSW 0 - 10 |
| Sunday Night | WSW 5 - 15 |
| Monday Morning | WSW 10 - 20 |
| Monday Afternoon | W 10 - 20 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Evening | SSW 0 - 10 |
| Sunday Night | WSW 5 - 15 |
| Monday Morning | WSW 5 - 15 |
| Monday Afternoon | W 5 - 15 |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Evening | S 5 - 15 |
| Sunday Night | SW 5 - 15 |
| Monday Morning | W 0 - 10 |
| Monday Afternoon | WNW 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 | |
|---|---|---|---|---|---|
| Sunday Evening | WSW 20 - 30 | WSW 15 - 25 | WSW 20 - 30 | WSW 15 - 25 | SW 20 - 30 |
| Sunday Night | W 20 - 30 | W 25 - 35 | W 25 - 35 | W 20 - 30 | W 15 - 25 |
| Monday Morning | W 20 - 30 | W 25 - 35 | W 30 - 40 | W 25 - 35 | W 10 - 20 |
| Monday Afternoon | W 25 - 35 | W 25 - 35 | W 30 - 40 | W 25 - 35 | W 15 - 25 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Evening | WSW 20 - 30 |
| Sunday Night | W 20 - 30 |
| Monday Morning | W 20 - 30 |
| Monday Afternoon | W 25 - 35 |
| Washington Pass | Direction - Speed |
|---|---|
| Sunday Evening | WSW 15 - 25 |
| Sunday Night | W 25 - 35 |
| Monday Morning | W 25 - 35 |
| Monday Afternoon | W 25 - 35 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Evening | WSW 20 - 30 |
| Sunday Night | W 25 - 35 |
| Monday Morning | W 30 - 40 |
| Monday Afternoon | W 30 - 40 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Evening | WSW 15 - 25 |
| Sunday Night | W 20 - 30 |
| Monday Morning | W 25 - 35 |
| Monday Afternoon | W 25 - 35 |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Evening | SW 20 - 30 |
| Sunday Night | W 15 - 25 |
| Monday Morning | W 10 - 20 |
| Monday Afternoon | W 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.
Issued: 2:38 PM PST Sunday, December 1, 2019
Extended Weather Synopsis for Wednesday night through Wednesday
Tuesday night and Wednesday, the weak frontal system continues pushing southward into the region, but subtle ridging forces the main energy and moisture to stay north in British Columbia.
The subtle ridging persists Wednesday night as any weak post-frontal activity ends. On Thursday, winds increase as flow shifts southerly, E flow picks up, and light rain/snow may lift across the region ahead of a more powerful system slated to arrive on Friday.
Snow/freezing levels remain above the seasonal norm throughout the extended forecast period.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Tuesday Night | Snow Level | 4000' - 5000' | 5000' - 6000' | 5500' - 6500' | * |
| Wednesday | Snow Level | 3500' - 4500' | 4500' - 5500' | 5500' - 6500' | * |
| Wednesday Night | Snow Level | 3000' - 4000' | 4000' - 5000' | 5000' - 6000' | * |
| Thursday | Snow Level | 3500' - 4500' | 4000' - 5000' | 5000' - 6000' | * |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Night |
Snow Level 4000' - 5000' (Easterly Flow *) |
| Wednesday |
Snow Level 3500' - 4500' (Easterly Flow *) |
| Wednesday Night |
Snow Level 3000' - 4000' (Easterly Flow *) |
| Thursday |
Snow Level 3500' - 4500' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Night |
Snow Level 5000' - 6000' (Easterly Flow *) |
| Wednesday |
Snow Level 4500' - 5500' (Easterly Flow *) |
| Wednesday Night |
Snow Level 4000' - 5000' (Easterly Flow *) |
| Thursday |
Snow Level 4000' - 5000' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Night |
Snow Level 5500' - 6500' (Easterly Flow *) |
| Wednesday |
Snow Level 5500' - 6500' (Easterly Flow *) |
| Wednesday Night |
Snow Level 5000' - 6000' (Easterly Flow *) |
| Thursday |
Snow Level 5000' - 6000' (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.
Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Previous forecast from Nov 30, 2019
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