Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Weather Synopsis for Thursday & Friday
A short-wave trough exits the region Thursday with one band of weakly organized light rain and snow showers passing across the region during the morning hours on a moderate S-SW flow. Most areas will experience light precipitation tapering off during the day from south to north from mid-morning onward. With easterly gradients weak and little cool air remaining east of the Cascade Crest, Snoqualmie pass has made it over the freezing mark as of Thursday morning, while Stevens Pass hover around the freezing mark. Both passes are expected to warm slightly through the day.
A high pressure will begin building Thursday afternoon, bringing a gradual clearing trend and continued rising snow/freezing levels as it continues to amplify and drift slightly eastward through the day on Saturday. The ridge will divert incoming systems south to California or north into British Columbia. The Olympics may get brushed with some very light moisture from a warm front passing offshore Thursday evening and another north-bound low offshore on Saturday.
The high pressure will re-invigorate the off-shore gradient. Moderate E wind through the passes will be expected from Thursday night onwards and will increase slightly Friday night.
Weather Forecast
Hurricane Ridge
| Thursday | Decreasing light rain and snow showers. Moderate and gusty winds. |
Mt. Baker
| Thursday | Light to moderate rain showers in the morning, decreasing in the afternoon. Cloudy late in the day. Moderate and gusty winds. |
Washington Pass and Leavenworth
| Thursday | Light rain or snow showers in the morning, tapering off in the afternoon with high overcast skies. Temperatures gradually rising. |
Stevens and Snoqualmie Pass
| Thursday | Rain showers at Snoqualmie pass ending in the early afternoon. A mix of rain and snow showers at Stevens pass decreaing by early afternoon. Gradual warming trend. Light east wind at low levels. Moderate alpine winds. |
Mt. Rainier, Crystal and White Pass
| Thursday | Light rain and snow showers decreasing and ending by early afternoon. High clouds with sun breaks possible late. Moderate winds. |
Mt. Hood
| Thursday | Light rain and snow showers ending early. High clouds giving way to sunshine by late afternoon. |
Issued: 6:55 AM PST Thursday, January 10, 2019
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Thursday Morning | Snow Level * | 4500' | 4500' | 4000' | 4500' | 4500' | 4500' | 4500' | 4500' |
| Thursday Afternoon | Snow Level * | 5000' | 4500' | 4500' | 4500' | 4500' | 4500' | 4500' | 5000' |
| Thursday Evening | Snow Level * | 5000' | 4500' | 4000' | 4500' | 4500' | 5500' | 5000' | 5500' |
| Thursday Night | Snow Level * | 5500' | 4500' | 3000' | 3000' | 3000' | 4500' | 4500' | 5500' |
| Friday Morning | Freezing Level * | 7000' | 5500' | 3500' | 3500' | 4000' | 6000' | 6000' | 6500' |
| Friday Afternoon | Freezing Level * | 7500' | 7500' | 4500' | 4000' | 5000' | 7000' | 7000' | 7500' |
| Hurricane Ridge | Elevation |
|---|---|
| Thursday Morning |
Snow Level 4500' (Easterly Flow *) |
| Thursday Afternoon |
Snow Level 5000' (Easterly Flow *) |
| Thursday Evening |
Snow Level 5000' (Easterly Flow *) |
| Thursday Night |
Snow Level 5500' (Easterly Flow *) |
| Friday Morning |
Freezing Level 7000' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 7500' (Easterly Flow *) |
| Mt. Baker | Elevation |
|---|---|
| Thursday Morning |
Snow Level 4500' (Easterly Flow *) |
| Thursday Afternoon |
Snow Level 4500' (Easterly Flow *) |
| Thursday Evening |
Snow Level 4500' (Easterly Flow *) |
| Thursday Night |
Snow Level 4500' (Easterly Flow *) |
| Friday Morning |
Freezing Level 5500' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 7500' (Easterly Flow *) |
| Washington Pass | Elevation |
|---|---|
| Thursday Morning |
Snow Level 4000' (Easterly Flow *) |
| Thursday Afternoon |
Snow Level 4500' (Easterly Flow *) |
| Thursday Evening |
Snow Level 4000' (Easterly Flow *) |
| Thursday Night |
Snow Level 3000' (Easterly Flow *) |
| Friday Morning |
Freezing Level 3500' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 4500' (Easterly Flow *) |
| Leavenworth | Elevation |
|---|---|
| Thursday Morning |
Snow Level 4500' (Easterly Flow *) |
| Thursday Afternoon |
Snow Level 4500' (Easterly Flow *) |
| Thursday Evening |
Snow Level 4500' (Easterly Flow *) |
| Thursday Night |
Snow Level 3000' (Easterly Flow *) |
| Friday Morning |
Freezing Level 3500' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 4000' (Easterly Flow *) |
| Stevens Pass | Elevation |
|---|---|
| Thursday Morning |
Snow Level 4500' (Easterly Flow *) |
| Thursday Afternoon |
Snow Level 4500' (Easterly Flow *) |
| Thursday Evening |
Snow Level 4500' (Easterly Flow *) |
| Thursday Night |
Snow Level 3000' (Easterly Flow *) |
| Friday Morning |
Freezing Level 4000' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 5000' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Thursday Morning |
Snow Level 4500' (Easterly Flow *) |
| Thursday Afternoon |
Snow Level 4500' (Easterly Flow *) |
| Thursday Evening |
Snow Level 5500' (Easterly Flow *) |
| Thursday Night |
Snow Level 4500' (Easterly Flow *) |
| Friday Morning |
Freezing Level 6000' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 7000' (Easterly Flow *) |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Thursday Morning |
Snow Level 4500' (Easterly Flow *) |
| Thursday Afternoon |
Snow Level 4500' (Easterly Flow *) |
| Thursday Evening |
Snow Level 5000' (Easterly Flow *) |
| Thursday Night |
Snow Level 4500' (Easterly Flow *) |
| Friday Morning |
Freezing Level 6000' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 7000' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Thursday Morning |
Snow Level 4500' (Easterly Flow *) |
| Thursday Afternoon |
Snow Level 5000' (Easterly Flow *) |
| Thursday Evening |
Snow Level 5500' (Easterly Flow *) |
| Thursday Night |
Snow Level 5500' (Easterly Flow *) |
| Friday Morning |
Freezing Level 6500' (Easterly Flow *) |
| Friday Afternoon |
Freezing Level 7500' (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
| Thursday | Thursday Night | Friday | |
|---|---|---|---|
| 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | LT 0.10 | LT 0.10 | 0 |
| Mt Baker Ski Area | 0.50 | LT 0.10 | 0 |
| Washington Pass | LT 0.25 | 0 | 0 |
| Leavenworth | 0 | 0 | 0 |
| Stevens Pass | LT 0.25 | 0 | 0 |
| Snoqualmie Pass | LT 0.10 | 0 | 0 |
| Mission Ridge | 0 | 0 | 0 |
| Crystal Mt | LT 0.10 | 0 | 0 |
| Paradise | LT 0.25 | 0 | 0 |
| White Pass | LT 0.25 | 0 | 0 |
| Mt Hood Meadows | LT 0.10 | 0 | 0 |
| Timberline | LT 0.10 | 0 | 0 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Thursday | LT 0.10 |
| Thursday Night | LT 0.10 |
| Friday | 0 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Thursday | 0.50 |
| Thursday Night | LT 0.10 |
| Friday | 0 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Thursday | LT 0.25 |
| Thursday Night | 0 |
| Friday | 0 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Thursday | 0 |
| Thursday Night | 0 |
| Friday | 0 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Thursday | LT 0.25 |
| Thursday Night | 0 |
| Friday | 0 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Thursday | LT 0.10 |
| Thursday Night | 0 |
| Friday | 0 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Thursday | 0 |
| Thursday Night | 0 |
| Friday | 0 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Thursday | LT 0.10 |
| Thursday Night | 0 |
| Friday | 0 |
| Paradise | Precipitation Forecast |
|---|---|
| Thursday | LT 0.25 |
| Thursday Night | 0 |
| Friday | 0 |
| White Pass | Precipitation Forecast |
|---|---|
| Thursday | LT 0.25 |
| Thursday Night | 0 |
| Friday | 0 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Thursday | LT 0.10 |
| Thursday Night | 0 |
| Friday | 0 |
| Timberline | Precipitation Forecast |
|---|---|
| Thursday | LT 0.10 |
| Thursday Night | 0 |
| Friday | 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: 6:55 AM PST Thursday, January 10, 2019
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Thursday Morning | S 15 - 25 | S 10 - 20 | SW 10 - 20 | SSW 10 - 20 | SSW 15 - 25 |
| Thursday Afternoon | SSE 20 - 30 | SSE 15 - 25 | SE 10 - 20 | SSE 10 - 20 | SE 10 - 20 |
| Thursday Evening | S 20 - 30 | SE 15 - 25 | ESE 5 - 15 | ESE 5 - 15 | ESE 10 - 20 |
| Thursday Night | SSE 20 - 30 | ESE 10 - 20 | ESE 10 - 20 | ESE 5 - 15 | ESE 10 - 20 |
| Friday Morning | SSE 10 - 20 | E 5 - 15 | ESE 10 - 20 | ESE 10 - 20 | ESE 20 - 30 |
| Friday Afternoon | ESE 10 - 20 | E 5 - 15 | E 10 - 20 | E 10 - 20 | ESE 10 - 20 |
| Hurricane Ridge | Elevation |
|---|---|
| Thursday Morning | S 15 - 25 |
| Thursday Afternoon | SSE 20 - 30 |
| Thursday Evening | S 20 - 30 |
| Thursday Night | SSE 20 - 30 |
| Friday Morning | SSE 10 - 20 |
| Friday Afternoon | ESE 10 - 20 |
| Mt. Baker | Elevation |
|---|---|
| Thursday Morning | S 10 - 20 |
| Thursday Afternoon | SSE 15 - 25 |
| Thursday Evening | SE 15 - 25 |
| Thursday Night | ESE 10 - 20 |
| Friday Morning | E 5 - 15 |
| Friday Afternoon | E 5 - 15 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Thursday Morning | SW 10 - 20 |
| Thursday Afternoon | SE 10 - 20 |
| Thursday Evening | ESE 5 - 15 |
| Thursday Night | ESE 10 - 20 |
| Friday Morning | ESE 10 - 20 |
| Friday Afternoon | E 10 - 20 |
| Mt. Rainier | Elevation |
|---|---|
| Thursday Morning | SSW 10 - 20 |
| Thursday Afternoon | SSE 10 - 20 |
| Thursday Evening | ESE 5 - 15 |
| Thursday Night | ESE 5 - 15 |
| Friday Morning | ESE 10 - 20 |
| Friday Afternoon | E 10 - 20 |
| Mt. Hood | Elevation |
|---|---|
| Thursday Morning | SSW 15 - 25 |
| Thursday Afternoon | SE 10 - 20 |
| Thursday Evening | ESE 10 - 20 |
| Thursday Night | ESE 10 - 20 |
| Friday Morning | ESE 20 - 30 |
| Friday Afternoon | ESE 10 - 20 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Thursday Morning | S 15 - 25 |
| Thursday Afternoon | SSE 20 - 30 |
| Thursday Evening | S 20 - 30 |
| Thursday Night | SSE 20 - 30 |
| Friday Morning | SSE 10 - 20 |
| Friday Afternoon | ESE 10 - 20 |
| Mt. Baker | Direction - Speed |
|---|---|
| Thursday Morning | S 10 - 20 |
| Thursday Afternoon | SSE 15 - 25 |
| Thursday Evening | SE 15 - 25 |
| Thursday Night | ESE 10 - 20 |
| Friday Morning | E 5 - 15 |
| Friday Afternoon | E 5 - 15 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Thursday Morning | SW 10 - 20 |
| Thursday Afternoon | SE 10 - 20 |
| Thursday Evening | ESE 5 - 15 |
| Thursday Night | ESE 10 - 20 |
| Friday Morning | ESE 10 - 20 |
| Friday Afternoon | E 10 - 20 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Thursday Morning | SSW 10 - 20 |
| Thursday Afternoon | SSE 10 - 20 |
| Thursday Evening | ESE 5 - 15 |
| Thursday Night | ESE 5 - 15 |
| Friday Morning | ESE 10 - 20 |
| Friday Afternoon | E 10 - 20 |
| Mt. Hood | Direction - Speed |
|---|---|
| Thursday Morning | SSW 15 - 25 |
| Thursday Afternoon | SE 10 - 20 |
| Thursday Evening | ESE 10 - 20 |
| Thursday Night | ESE 10 - 20 |
| Friday Morning | ESE 20 - 30 |
| Friday Afternoon | ESE 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.
Free Winds at 9000' (mph)
| Mt. Baker | Washington Pass | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Thursday Morning | SSW 25 - 35 | SSW 30 - 45 | SW 25 - 35 | SW 20 - 30 | SW 20 - 30 |
| Thursday Afternoon | SSW 20 - 30 | SSE 15 - 25 | SSW 20 - 30 | SSW 20 - 30 | SSW 20 - 30 |
| Thursday Evening | S 20 - 30 | SSW 15 - 25 | SSW 20 - 30 | S 20 - 30 | S 20 - 30 |
| Thursday Night | S 25 - 35 | S 15 - 25 | S 20 - 30 | S 20 - 30 | S 20 - 30 |
| Friday Morning | S 20 - 30 | S 15 - 25 | SSE 15 - 25 | SSE 20 - 30 | SSE 20 - 30 |
| Friday Afternoon | S 15 - 25 | S 10 - 20 | S 15 - 25 | S 15 - 25 | S 15 - 25 |
| Mt. Baker | Direction - Speed |
|---|---|
| Thursday Morning | SSW 25 - 35 |
| Thursday Afternoon | SSW 20 - 30 |
| Thursday Evening | S 20 - 30 |
| Thursday Night | S 25 - 35 |
| Friday Morning | S 20 - 30 |
| Friday Afternoon | S 15 - 25 |
| Washington Pass | Direction - Speed |
|---|---|
| Thursday Morning | SSW 30 - 45 |
| Thursday Afternoon | SSE 15 - 25 |
| Thursday Evening | SSW 15 - 25 |
| Thursday Night | S 15 - 25 |
| Friday Morning | S 15 - 25 |
| Friday Afternoon | S 10 - 20 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Thursday Morning | SW 25 - 35 |
| Thursday Afternoon | SSW 20 - 30 |
| Thursday Evening | SSW 20 - 30 |
| Thursday Night | S 20 - 30 |
| Friday Morning | SSE 15 - 25 |
| Friday Afternoon | S 15 - 25 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Thursday Morning | SW 20 - 30 |
| Thursday Afternoon | SSW 20 - 30 |
| Thursday Evening | S 20 - 30 |
| Thursday Night | S 20 - 30 |
| Friday Morning | SSE 20 - 30 |
| Friday Afternoon | S 15 - 25 |
| Mt. Hood | Direction - Speed |
|---|---|
| Thursday Morning | SW 20 - 30 |
| Thursday Afternoon | SSW 20 - 30 |
| Thursday Evening | S 20 - 30 |
| Thursday Night | S 20 - 30 |
| Friday Morning | SSE 20 - 30 |
| Friday 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 Jan 9, 2019
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