Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Weather Synopsis for Sunday & Tuesday
A compact but potent low and trough combination passed through the region during the early morning hours on Sunday, bringing a strong southerly and then westerly wind surge to parts of the Pacific Northwest. This feature has passed northward into British Columbia, leaving the upper trough moving into the area during the day. This will bring W-SW flow and snow shower activity along with moderate and gusty winds (nothing like what passed through during the early morning hours). The heaviest snow showers will be north of Stevens Pass today, with another wave of more organized snow shower activity developing over the south Cascades late in the day.
The upper trough will remain over the area Sunday night and Monday morning with very gradually decreasing snow showers mostly confined to the west slopes of the Cascades. A shortwave upper-level ridge will generally cut off precipitation by Monday evening. Fair and clearing skies can be expected Monday night. Pass-level winds will shift easterly Monday night and will be moderate with strong gusts by Tuesday morning
A mature low spins some 600 miles off the N. California on Tuesday, spreading light to moderate snow on a southerly flow. At this time it appears that the heaviest precipitation will be across the Olympic Mountains. Strong easterly flow can be expected through the Cascade Passes.
Weather Forecast
Hurricane Ridge
| Sunday | Light snow showers, decreasing slightly during the day. Moderate winds decreasing. |
Mt. Baker
| Sunday | Moderate snow becoming light snow showers by late morning. 5-9" of snow likely during the day. Moderate winds with strong gusts early; then moderate winds decreasing throughout the day. |
Washington Pass and Leavenworth
| Sunday | Light snow becoming decreasing light snow showers by late morning. Areas further north and closer to the crest will see 2-4" of snow accumulation. Moderate and gusty winds. |
Stevens and Snoqualmie Pass
| Sunday | Light snow showers, decreasing in the afternoon. 2-4" of accumulation likely. Moderate and gusty winds. |
Mt. Rainier, Crystal and White Pass
| Sunday | Light snow showers, possibly heaviest late in the day. 3-6" of accumulation likely at Paradise with lesser amounts at Crystal and White pass. Moderate and gusty winds. |
Mt. Hood
| Sunday | Light snow showers becoming light to moderate in the afternoon. 4-6" of accumulation likely. Moderate winds with strong gusts. |
Issued: 6:44 AM PST Sunday, January 6, 2019
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Sunday Morning | Snow Level | 2000' | 2500' | 2500' | 2500' | 2500' | 2000' | 2000' | 2000' |
| Sunday Afternoon | Snow Level | 2000' | 1500' | 2000' | 2000' | 2000' | 2000' | 2000' | 2000' |
| Sunday Evening | Snow Level | 1000' | 1000' | 500' | 1000' | 1000' | 1000' | 1000' | 1500' |
| Sunday Night | Snow Level | 1000' | 1000' | 0' | 1000' | 1000' | 1000' | 1000' | 1000' |
| Monday Morning | Snow Level | 1500' | 1000' | 500' | 1500' | 1000' | 1500' | 1500' | 2000' |
| Monday Afternoon | Snow Level | 1000' | 500' | 0' | 1000' | 500' | 1000' | 1000' | 2000' |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Morning |
Snow Level 2000' |
| Sunday Afternoon |
Snow Level 2000' |
| Sunday Evening |
Snow Level 1000' |
| Sunday Night |
Snow Level 1000' |
| Monday Morning |
Snow Level 1500' |
| Monday Afternoon |
Snow Level 1000' |
| Mt. Baker | Elevation |
|---|---|
| Sunday Morning |
Snow Level 2500' |
| Sunday Afternoon |
Snow Level 1500' |
| Sunday Evening |
Snow Level 1000' |
| Sunday Night |
Snow Level 1000' |
| Monday Morning |
Snow Level 1000' |
| Monday Afternoon |
Snow Level 500' |
| Washington Pass | Elevation |
|---|---|
| Sunday Morning |
Snow Level 2500' |
| Sunday Afternoon |
Snow Level 2000' |
| Sunday Evening |
Snow Level 500' |
| Sunday Night |
Snow Level 0' |
| Monday Morning |
Snow Level 500' |
| Monday Afternoon |
Snow Level 0' |
| Leavenworth | Elevation |
|---|---|
| Sunday Morning |
Snow Level 2500' |
| Sunday Afternoon |
Snow Level 2000' |
| Sunday Evening |
Snow Level 1000' |
| Sunday Night |
Snow Level 1000' |
| Monday Morning |
Snow Level 1500' |
| Monday Afternoon |
Snow Level 1000' |
| Stevens Pass | Elevation |
|---|---|
| Sunday Morning |
Snow Level 2500' |
| Sunday Afternoon |
Snow Level 2000' |
| Sunday Evening |
Snow Level 1000' |
| Sunday Night |
Snow Level 1000' |
| Monday Morning |
Snow Level 1000' |
| Monday Afternoon |
Snow Level 500' |
| Snoqualmie Pass | Elevation |
|---|---|
| Sunday Morning |
Snow Level 2000' |
| Sunday Afternoon |
Snow Level 2000' |
| Sunday Evening |
Snow Level 1000' |
| Sunday Night |
Snow Level 1000' |
| Monday Morning |
Snow Level 1500' |
| Monday Afternoon |
Snow Level 1000' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Sunday Morning |
Snow Level 2000' |
| Sunday Afternoon |
Snow Level 2000' |
| Sunday Evening |
Snow Level 1000' |
| Sunday Night |
Snow Level 1000' |
| Monday Morning |
Snow Level 1500' |
| Monday Afternoon |
Snow Level 1000' |
| Mt. Hood | Elevation |
|---|---|
| Sunday Morning |
Snow Level 2000' |
| Sunday Afternoon |
Snow Level 2000' |
| Sunday Evening |
Snow Level 1500' |
| Sunday Night |
Snow Level 1000' |
| Monday Morning |
Snow Level 2000' |
| Monday Afternoon |
Snow Level 2000' |
* 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 | Sunday Night | Tuesday | |
|---|---|---|---|
| 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | 0.25 - 0.50 | LT 0.25 | LT 0.10 |
| Mt Baker Ski Area | 0.75 | 0.50 | LT 0.25 |
| Washington Pass | 0.25 | LT 0.25 | LT 0.10 |
| Leavenworth | LT 0.10 | LT 0.10 | 0 |
| Stevens Pass | 0.25 - 0.50 | 0.25 | LT 0.25 |
| Snoqualmie Pass | 0.25 | 0.25 | 0.25 |
| Mission Ridge | LT 0.10 | LT 0.10 | LT 0.10 |
| Crystal Mt | LT 0.25 | LT 0.25 | LT 0.10 |
| Paradise | 0.25 - 0.50 | 0.50 | LT 0.25 |
| White Pass | 0.25 | 0.25 - 0.50 | 0.25 |
| Mt Hood Meadows | 0.25 - 0.50 | 0.50 | 0.25 |
| Timberline | 0.25 - 0.50 | 0.50 | 0.25 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Sunday | 0.25 - 0.50 |
| Sunday Night | LT 0.25 |
| Tuesday | LT 0.10 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Sunday | 0.75 |
| Sunday Night | 0.50 |
| Tuesday | LT 0.25 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Sunday | 0.25 |
| Sunday Night | LT 0.25 |
| Tuesday | LT 0.10 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Sunday | LT 0.10 |
| Sunday Night | LT 0.10 |
| Tuesday | 0 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Sunday | 0.25 - 0.50 |
| Sunday Night | 0.25 |
| Tuesday | LT 0.25 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Sunday | 0.25 |
| Sunday Night | 0.25 |
| Tuesday | 0.25 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Sunday | LT 0.10 |
| Sunday Night | LT 0.10 |
| Tuesday | LT 0.10 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Sunday | LT 0.25 |
| Sunday Night | LT 0.25 |
| Tuesday | LT 0.10 |
| Paradise | Precipitation Forecast |
|---|---|
| Sunday | 0.25 - 0.50 |
| Sunday Night | 0.50 |
| Tuesday | LT 0.25 |
| White Pass | Precipitation Forecast |
|---|---|
| Sunday | 0.25 |
| Sunday Night | 0.25 - 0.50 |
| Tuesday | 0.25 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Sunday | 0.25 - 0.50 |
| Sunday Night | 0.50 |
| Tuesday | 0.25 |
| Timberline | Precipitation Forecast |
|---|---|
| Sunday | 0.25 - 0.50 |
| Sunday Night | 0.50 |
| Tuesday | 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: 6:44 AM PST Sunday, January 6, 2019
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Sunday Morning | SW 20 - 30 | SW 20 - 30 | WSW 15 - 25 | SW 10 - 20 | SSW 15 - 25 |
| Sunday Afternoon | WSW 10 - 20 | SSW 10 - 20 | VAR 0 - 10 | VAR 0 - 10 | WSW 20 - 30 |
| Sunday Evening | WSW 15 - 25 | SW 10 - 20 | WSW 10 - 20 | WSW 10 - 20 | WSW 30 - 45 |
| Sunday Night | W 20 - 30 | SW 15 - 25 | WSW 15 - 25 | WSW 15 - 25 | WSW 20 - 30 |
| Monday Morning | WSW 15 - 25 | WSW 10 - 20 | WSW 15 - 25 | WSW 10 - 20 | WSW 15 - 25 |
| Monday Afternoon | W 5 - 15 | SW 5 - 15 | W 10 - 20 | WSW 5 - 15 | SSW 5 - 15 |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Morning | SW 20 - 30 |
| Sunday Afternoon | WSW 10 - 20 |
| Sunday Evening | WSW 15 - 25 |
| Sunday Night | W 20 - 30 |
| Monday Morning | WSW 15 - 25 |
| Monday Afternoon | W 5 - 15 |
| Mt. Baker | Elevation |
|---|---|
| Sunday Morning | SW 20 - 30 |
| Sunday Afternoon | SSW 10 - 20 |
| Sunday Evening | SW 10 - 20 |
| Sunday Night | SW 15 - 25 |
| Monday Morning | WSW 10 - 20 |
| Monday Afternoon | SW 5 - 15 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Sunday Morning | WSW 15 - 25 |
| Sunday Afternoon | VAR 0 - 10 |
| Sunday Evening | WSW 10 - 20 |
| Sunday Night | WSW 15 - 25 |
| Monday Morning | WSW 15 - 25 |
| Monday Afternoon | W 10 - 20 |
| Mt. Rainier | Elevation |
|---|---|
| Sunday Morning | SW 10 - 20 |
| Sunday Afternoon | VAR 0 - 10 |
| Sunday Evening | WSW 10 - 20 |
| Sunday Night | WSW 15 - 25 |
| Monday Morning | WSW 10 - 20 |
| Monday Afternoon | WSW 5 - 15 |
| Mt. Hood | Elevation |
|---|---|
| Sunday Morning | SSW 15 - 25 |
| Sunday Afternoon | WSW 20 - 30 |
| Sunday Evening | WSW 30 - 45 |
| Sunday Night | WSW 20 - 30 |
| Monday Morning | WSW 15 - 25 |
| Monday Afternoon | SSW 5 - 15 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Sunday Morning | SW 20 - 30 |
| Sunday Afternoon | WSW 10 - 20 |
| Sunday Evening | WSW 15 - 25 |
| Sunday Night | W 20 - 30 |
| Monday Morning | WSW 15 - 25 |
| Monday Afternoon | W 5 - 15 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Morning | SW 20 - 30 |
| Sunday Afternoon | SSW 10 - 20 |
| Sunday Evening | SW 10 - 20 |
| Sunday Night | SW 15 - 25 |
| Monday Morning | WSW 10 - 20 |
| Monday Afternoon | SW 5 - 15 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Morning | WSW 15 - 25 |
| Sunday Afternoon | VAR 0 - 10 |
| Sunday Evening | WSW 10 - 20 |
| Sunday Night | WSW 15 - 25 |
| Monday Morning | WSW 15 - 25 |
| Monday Afternoon | W 10 - 20 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Morning | SW 10 - 20 |
| Sunday Afternoon | VAR 0 - 10 |
| Sunday Evening | WSW 10 - 20 |
| Sunday Night | WSW 15 - 25 |
| Monday Morning | WSW 10 - 20 |
| Monday Afternoon | WSW 5 - 15 |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Morning | SSW 15 - 25 |
| Sunday Afternoon | WSW 20 - 30 |
| Sunday Evening | WSW 30 - 45 |
| Sunday Night | WSW 20 - 30 |
| Monday Morning | WSW 15 - 25 |
| Monday Afternoon | SSW 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 Morning | WSW 35 - 50 | WSW 40 - 60 | WSW 35 - 50 | WSW 30 - 45 | SW 25 - 35 |
| Sunday Afternoon | SW 20 - 30 | SW 20 - 30 | SW 15 - 25 | SW 20 - 30 | SW 35 - 50 |
| Sunday Evening | WSW 15 - 25 | WSW 10 - 20 | W 10 - 20 | W 20 - 30 | W 35 - 50 |
| Sunday Night | WSW 25 - 35 | WSW 35 - 50 | W 30 - 45 | W 30 - 45 | W 30 - 45 |
| Monday Morning | WSW 25 - 35 | WSW 35 - 50 | WSW 30 - 45 | WSW 30 - 45 | WSW 25 - 35 |
| Monday Afternoon | WSW 20 - 30 | WSW 20 - 30 | W 30 - 45 | W 25 - 35 | WSW 25 - 35 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Morning | WSW 35 - 50 |
| Sunday Afternoon | SW 20 - 30 |
| Sunday Evening | WSW 15 - 25 |
| Sunday Night | WSW 25 - 35 |
| Monday Morning | WSW 25 - 35 |
| Monday Afternoon | WSW 20 - 30 |
| Washington Pass | Direction - Speed |
|---|---|
| Sunday Morning | WSW 40 - 60 |
| Sunday Afternoon | SW 20 - 30 |
| Sunday Evening | WSW 10 - 20 |
| Sunday Night | WSW 35 - 50 |
| Monday Morning | WSW 35 - 50 |
| Monday Afternoon | WSW 20 - 30 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Morning | WSW 35 - 50 |
| Sunday Afternoon | SW 15 - 25 |
| Sunday Evening | W 10 - 20 |
| Sunday Night | W 30 - 45 |
| Monday Morning | WSW 30 - 45 |
| Monday Afternoon | W 30 - 45 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Morning | WSW 30 - 45 |
| Sunday Afternoon | SW 20 - 30 |
| Sunday Evening | W 20 - 30 |
| Sunday Night | W 30 - 45 |
| Monday Morning | WSW 30 - 45 |
| Monday Afternoon | W 25 - 35 |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Morning | SW 25 - 35 |
| Sunday Afternoon | SW 35 - 50 |
| Sunday Evening | W 35 - 50 |
| Sunday Night | W 30 - 45 |
| Monday Morning | WSW 25 - 35 |
| Monday Afternoon | WSW 25 - 35 |
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 5, 2019
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