Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Weather Synopsis for Monday & Friday
A weak trough will exit the area this morning bringing decreasing rain and snow showers on a split SW flow. The heaviest showers will be on the windward slopes of the North Cascades (Mt. Baker) and the Olympics.
Although many areas will become dry in the afternoon, cloud cover will remain ahead of a stronger frontal system impacting western Washington and Oregon late in the day, spreading rain and snow along with increasing winds to the Olympics. Overnight and Tuesday, the front produces moderate to heavy rain, high elevation snow and very strong wind along with warming temperatures to the Cascades and Olympics from Monday night until the frontal passage during the mid to late morning hours on Tuesday when temperatures peak. Moderate rain and snow along with moderate to strong crest-level winds will continue in the post-frontal regime.
Most pass locations will experience a changeover from snow to rain and then back to snow later Tuesday or Tuesday night as temperatures gradually cool.
Weather Forecast
Hurricane Ridge
| Monday | Light rain and snow showers. Moderate winds, becoming strong by evening. Steady temperatures. |
Mt. Baker
| Monday | Light to moderate rain and snow showers. Moderate winds, increasing late in the day. Steady temperatures. |
Washington Pass and Leavenworth
| Monday | Light rain and snow showers in the morning, decreasing in the afternoon. Moderate winds, increasing late in the day. |
Stevens and Snoqualmie Pass
| Monday | Light rain and snow showers in the morning, ending in the afternoon. Moderate winds, increasing late in the day. |
Mt. Rainier, Crystal and White Pass
| Monday | Light rain and snow showers in the morning, decreasing in the afternoon. Moderate winds, increasing late in the day. |
Mt. Hood
| Monday | Light rain and snow showers in the morning ending by afternoon with clouds remaining overhead. Moderate winds. |
Issued: 6:49 AM PST Monday, December 17, 2018
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Monday Morning | Snow Level | 4000' | 3500' | 3000' | 3500' | 3500' | 3500' | 3500' | 4000' |
| Monday Afternoon | Snow Level | 4000' | 3500' | 3500' | 4000' | 4000' | 4000' | 4000' | 4000' |
| Monday Evening | Snow Level * | 3500' | 3500' | 3500' | 3500' | 3500' | 3500' | 4000' | 4000' |
| Monday Night | Snow Level * | 5000' | 3500' | 3500' | 4000' | 3500' | 4000' | 4500' | 5500' |
| Tuesday Morning | Snow Level | 5000' | 4500' | 4500' | 4500' | 4500' | 4500' | 5000' | 6500' |
| Tuesday Afternoon | Snow Level | 4000' | 4000' | 4000' | 4500' | 4000' | 4500' | 4500' | 5500' |
| Hurricane Ridge | Elevation |
|---|---|
| Monday Morning |
Snow Level 4000' |
| Monday Afternoon |
Snow Level 4000' |
| Monday Evening |
Snow Level 3500' (Easterly Flow *) |
| Monday Night |
Snow Level 5000' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 5000' |
| Tuesday Afternoon |
Snow Level 4000' |
| Mt. Baker | Elevation |
|---|---|
| Monday Morning |
Snow Level 3500' |
| Monday Afternoon |
Snow Level 3500' |
| Monday Evening |
Snow Level 3500' (Easterly Flow *) |
| Monday Night |
Snow Level 3500' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 4500' |
| Tuesday Afternoon |
Snow Level 4000' |
| Washington Pass | Elevation |
|---|---|
| Monday Morning |
Snow Level 3000' |
| Monday Afternoon |
Snow Level 3500' |
| Monday Evening |
Snow Level 3500' (Easterly Flow *) |
| Monday Night |
Snow Level 3500' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 4500' |
| Tuesday Afternoon |
Snow Level 4000' |
| Leavenworth | Elevation |
|---|---|
| Monday Morning |
Snow Level 3500' |
| Monday Afternoon |
Snow Level 4000' |
| Monday Evening |
Snow Level 3500' (Easterly Flow *) |
| Monday Night |
Snow Level 4000' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 4500' |
| Tuesday Afternoon |
Snow Level 4500' |
| Stevens Pass | Elevation |
|---|---|
| Monday Morning |
Snow Level 3500' |
| Monday Afternoon |
Snow Level 4000' |
| Monday Evening |
Snow Level 3500' (Easterly Flow *) |
| Monday Night |
Snow Level 3500' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 4500' |
| Tuesday Afternoon |
Snow Level 4000' |
| Snoqualmie Pass | Elevation |
|---|---|
| Monday Morning |
Snow Level 3500' |
| Monday Afternoon |
Snow Level 4000' |
| Monday Evening |
Snow Level 3500' (Easterly Flow *) |
| Monday Night |
Snow Level 4000' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 4500' |
| Tuesday Afternoon |
Snow Level 4500' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Monday Morning |
Snow Level 3500' |
| Monday Afternoon |
Snow Level 4000' |
| Monday Evening |
Snow Level 4000' (Easterly Flow *) |
| Monday Night |
Snow Level 4500' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 5000' |
| Tuesday Afternoon |
Snow Level 4500' |
| Mt. Hood | Elevation |
|---|---|
| Monday Morning |
Snow Level 4000' |
| Monday Afternoon |
Snow Level 4000' |
| Monday Evening |
Snow Level 4000' (Easterly Flow *) |
| Monday Night |
Snow Level 5500' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 6500' |
| Tuesday Afternoon |
Snow Level 5500' |
* 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 | Monday Night | Friday | |
|---|---|---|---|
| 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | 0.25 | 0.50 - 0.75 | 0.25 |
| Mt Baker Ski Area | 0.50 - 0.75 | 2.00 | 1.00 |
| Washington Pass | LT 0.25 | 1.00 | 1.00 |
| Leavenworth | 0 | 0.50 | 0.25 - 0.50 |
| Stevens Pass | LT 0.10 | 0.50 | 0.50 |
| Snoqualmie Pass | LT 0.10 | 1.00 - 1.50 | 1.00 |
| Mission Ridge | 0 | 1.00 | 0.25 |
| Crystal Mt | LT 0.10 | 1.50 - 2.00 | 0.75 |
| Paradise | LT 0.10 | 2.00 | 1.50 |
| White Pass | LT 0.10 | 1.00 | 1.00 - 1.50 |
| Mt Hood Meadows | LT 0.10 | 1.00 | 1.00 - 1.50 |
| Timberline | LT 0.10 | 1.00 | 1.50 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Monday | 0.25 |
| Monday Night | 0.50 - 0.75 |
| Friday | 0.25 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Monday | 0.50 - 0.75 |
| Monday Night | 2.00 |
| Friday | 1.00 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Monday | LT 0.25 |
| Monday Night | 1.00 |
| Friday | 1.00 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Monday | 0 |
| Monday Night | 0.50 |
| Friday | 0.25 - 0.50 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Monday | LT 0.10 |
| Monday Night | 0.50 |
| Friday | 0.50 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Monday | LT 0.10 |
| Monday Night | 1.00 - 1.50 |
| Friday | 1.00 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Monday | 0 |
| Monday Night | 1.00 |
| Friday | 0.25 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Monday | LT 0.10 |
| Monday Night | 1.50 - 2.00 |
| Friday | 0.75 |
| Paradise | Precipitation Forecast |
|---|---|
| Monday | LT 0.10 |
| Monday Night | 2.00 |
| Friday | 1.50 |
| White Pass | Precipitation Forecast |
|---|---|
| Monday | LT 0.10 |
| Monday Night | 1.00 |
| Friday | 1.00 - 1.50 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Monday | LT 0.10 |
| Monday Night | 1.00 |
| Friday | 1.00 - 1.50 |
| Timberline | Precipitation Forecast |
|---|---|
| Monday | LT 0.10 |
| Monday Night | 1.00 |
| Friday | 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: 6:49 AM PST Monday, December 17, 2018
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Monday Morning | S 15 - 25 | S 15 - 25 | SW 15 - 25 | S 15 - 25 | S 15 - 25 |
| Monday Afternoon | S 30 - 45 | S 25 - 35 | SSE 25 - 35 | SSE 25 - 35 | S 25 - 35 |
| Monday Evening | S 45 - 65 | SE 35 - 50 | SE 30 - 45 | SSE 35 - 50 | SSE 40 - 60 |
| Monday Night | SE 25 - 35 | SSW 25 - 35 | SSW 35 - 50 | SSW 35 - 50 | SSW 40 - 60 |
| Tuesday Morning | SW 20 - 30 | S 20 - 30 | SW 20 - 30 | SW 20 - 30 | SW 40 - 60 |
| Tuesday Afternoon | SW 25 - 35 | SW 20 - 30 | WSW 30 - 45 | WSW 30 - 45 | WSW 40 - 60 |
| Hurricane Ridge | Elevation |
|---|---|
| Monday Morning | S 15 - 25 |
| Monday Afternoon | S 30 - 45 |
| Monday Evening | S 45 - 65 |
| Monday Night | SE 25 - 35 |
| Tuesday Morning | SW 20 - 30 |
| Tuesday Afternoon | SW 25 - 35 |
| Mt. Baker | Elevation |
|---|---|
| Monday Morning | S 15 - 25 |
| Monday Afternoon | S 25 - 35 |
| Monday Evening | SE 35 - 50 |
| Monday Night | SSW 25 - 35 |
| Tuesday Morning | S 20 - 30 |
| Tuesday Afternoon | SW 20 - 30 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Monday Morning | SW 15 - 25 |
| Monday Afternoon | SSE 25 - 35 |
| Monday Evening | SE 30 - 45 |
| Monday Night | SSW 35 - 50 |
| Tuesday Morning | SW 20 - 30 |
| Tuesday Afternoon | WSW 30 - 45 |
| Mt. Rainier | Elevation |
|---|---|
| Monday Morning | S 15 - 25 |
| Monday Afternoon | SSE 25 - 35 |
| Monday Evening | SSE 35 - 50 |
| Monday Night | SSW 35 - 50 |
| Tuesday Morning | SW 20 - 30 |
| Tuesday Afternoon | WSW 30 - 45 |
| Mt. Hood | Elevation |
|---|---|
| Monday Morning | S 15 - 25 |
| Monday Afternoon | S 25 - 35 |
| Monday Evening | SSE 40 - 60 |
| Monday Night | SSW 40 - 60 |
| Tuesday Morning | SW 40 - 60 |
| Tuesday Afternoon | WSW 40 - 60 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Monday Morning | S 15 - 25 |
| Monday Afternoon | S 30 - 45 |
| Monday Evening | S 45 - 65 |
| Monday Night | SE 25 - 35 |
| Tuesday Morning | SW 20 - 30 |
| Tuesday Afternoon | SW 25 - 35 |
| Mt. Baker | Direction - Speed |
|---|---|
| Monday Morning | S 15 - 25 |
| Monday Afternoon | S 25 - 35 |
| Monday Evening | SE 35 - 50 |
| Monday Night | SSW 25 - 35 |
| Tuesday Morning | S 20 - 30 |
| Tuesday Afternoon | SW 20 - 30 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Monday Morning | SW 15 - 25 |
| Monday Afternoon | SSE 25 - 35 |
| Monday Evening | SE 30 - 45 |
| Monday Night | SSW 35 - 50 |
| Tuesday Morning | SW 20 - 30 |
| Tuesday Afternoon | WSW 30 - 45 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Monday Morning | S 15 - 25 |
| Monday Afternoon | SSE 25 - 35 |
| Monday Evening | SSE 35 - 50 |
| Monday Night | SSW 35 - 50 |
| Tuesday Morning | SW 20 - 30 |
| Tuesday Afternoon | WSW 30 - 45 |
| Mt. Hood | Direction - Speed |
|---|---|
| Monday Morning | S 15 - 25 |
| Monday Afternoon | S 25 - 35 |
| Monday Evening | SSE 40 - 60 |
| Monday Night | SSW 40 - 60 |
| Tuesday Morning | SW 40 - 60 |
| Tuesday Afternoon | WSW 40 - 60 |
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 Morning | SSW 25 - 35 | SW 30 - 45 | SW 30 - 45 | SW 30 - 45 | SW 30 - 45 |
| Monday Afternoon | SSW 30 - 45 | SSW 20 - 30 | SW 25 - 35 | SW 25 - 35 | SW 30 - 45 |
| Monday Evening | S 50 - 70 | SSW 35 - 50 | SW 45 - 65 | SW 50 - 70 | WSW 55 - 75 |
| Monday Night | SW 45 - 65 | SW 35 - 50 | SW 60 - 80 | SW 65 - 85 | SW 60 - 80 |
| Tuesday Morning | SW 35 - 50 | SW 35 - 50 | WSW 40 - 60 | WSW 45 - 65 | WSW 65 - 85 |
| Tuesday Afternoon | WSW 40 - 60 | WSW 30 - 45 | WSW 50 - 70 | WSW 50 - 70 | WSW 60 - 80 |
| Mt. Baker | Direction - Speed |
|---|---|
| Monday Morning | SSW 25 - 35 |
| Monday Afternoon | SSW 30 - 45 |
| Monday Evening | S 50 - 70 |
| Monday Night | SW 45 - 65 |
| Tuesday Morning | SW 35 - 50 |
| Tuesday Afternoon | WSW 40 - 60 |
| Washington Pass | Direction - Speed |
|---|---|
| Monday Morning | SW 30 - 45 |
| Monday Afternoon | SSW 20 - 30 |
| Monday Evening | SSW 35 - 50 |
| Monday Night | SW 35 - 50 |
| Tuesday Morning | SW 35 - 50 |
| Tuesday Afternoon | WSW 30 - 45 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Monday Morning | SW 30 - 45 |
| Monday Afternoon | SW 25 - 35 |
| Monday Evening | SW 45 - 65 |
| Monday Night | SW 60 - 80 |
| Tuesday Morning | WSW 40 - 60 |
| Tuesday Afternoon | WSW 50 - 70 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Monday Morning | SW 30 - 45 |
| Monday Afternoon | SW 25 - 35 |
| Monday Evening | SW 50 - 70 |
| Monday Night | SW 65 - 85 |
| Tuesday Morning | WSW 45 - 65 |
| Tuesday Afternoon | WSW 50 - 70 |
| Mt. Hood | Direction - Speed |
|---|---|
| Monday Morning | SW 30 - 45 |
| Monday Afternoon | SW 30 - 45 |
| Monday Evening | WSW 55 - 75 |
| Monday Night | SW 60 - 80 |
| Tuesday Morning | WSW 65 - 85 |
| Tuesday Afternoon | WSW 60 - 80 |
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 16, 2018
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