Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Weather Synopsis for Tuesday & Tuesday
.A major winter storm impacts continues to impact the Pacific Northwest on Tuesday with strong winds, heavy rain/snow, 4000-5000 ft snow levels gradually lowering as the slow-moving frontal system moves eastward. Snow levels are lower than originally forecast with most pass locations experiencing snow although Snoqualmie may mix with rain during the morning hours as winds switch from easterly to a subtle westerly direction.
The post-frontal flow will be moist and showers will be continuous and heavy at times Tuesday afternoon, gradually decreasing Tuesday night and Wednesday. The strong jet will keep moderate to strong winds in the forecast Tuesday afternoon before they begin to gradually decrease Tuesday night and Wednesday
Another system approaches offshore from the SW. By Wednesday night, the associated warm front lifts northward across the region bringing wind and some precipitation; it will be followed by a sharp cold front on Thursday bring rain, snow and wind to the region.
Weather Forecast
Hurricane Ridge
| Tuesday | Light to moderate rain and snow. Gradually lowering snow levels. Moderate winds gusting strong. |
Mt. Baker
| Tuesday | Heavy rain and snow in the morning becoming moderate in the afternoon. Snow levels gradually lowering. Moderate winds gusting strong. |
Washington Pass and Leavenworth
| Tuesday | Moderate snow. Slight bump in snow levels early possible southern part, then snow levels gradually lowering. Moderate winds gusting strong. |
Stevens and Snoqualmie Pass
| Tuesday | Moderate to heavy rain and snow. Moderate to strong winds. Snoqualmie will see a slight bump in freezing levels early morning hours creating a rain/snow mix, then gradually lowering snow levels throughout the day. Stevens will remain all snow. |
Mt. Rainier, Crystal and White Pass
| Tuesday | Heavy snow at Paradise; moderate to heavy snow White Pass; moderate to heavy rain and snow at Crystal with a slight break |
Mt. Hood
| Tuesday | Very stormy with heavy rain and snow becoming moderate in the afternoon; strong winds; snow levels gradually lowering. |
Issued: 6:39 AM PST Tuesday, December 18, 2018
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Tuesday Morning | Snow Level | 4500' | 4000' | 3500' | 4000' | 3500' | 4000' | 4000' | 5000' |
| Tuesday Afternoon | Snow Level | 4000' | 3500' | 4000' | 3500' | 3500' | 3500' | 4000' | 4500' |
| Tuesday Evening | Snow Level | 3500' | 3000' | 3500' | 3500' | 3500' | 3500' | 3500' | 4500' |
| Tuesday Night | Snow Level | 3500' | 2500' | 2000' | 3000' | 2500' | 3000' | 3000' | 4000' |
| Wednesday Morning | Snow Level | 3500' | 3000' | 2500' | 3500' | 3000' | 3000' | 3500' | 4000' |
| Wednesday Afternoon | Snow Level | 3500' | 3000' | 3500' | 4000' | 3500' | 3500' | 4000' | 4500' |
| Hurricane Ridge | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 4500' |
| Tuesday Afternoon |
Snow Level 4000' |
| Tuesday Evening |
Snow Level 3500' |
| Tuesday Night |
Snow Level 3500' |
| Wednesday Morning |
Snow Level 3500' |
| Wednesday Afternoon |
Snow Level 3500' |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 4000' |
| Tuesday Afternoon |
Snow Level 3500' |
| Tuesday Evening |
Snow Level 3000' |
| Tuesday Night |
Snow Level 2500' |
| Wednesday Morning |
Snow Level 3000' |
| Wednesday Afternoon |
Snow Level 3000' |
| Washington Pass | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 3500' |
| Tuesday Afternoon |
Snow Level 4000' |
| Tuesday Evening |
Snow Level 3500' |
| Tuesday Night |
Snow Level 2000' |
| Wednesday Morning |
Snow Level 2500' |
| Wednesday Afternoon |
Snow Level 3500' |
| Leavenworth | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 4000' |
| Tuesday Afternoon |
Snow Level 3500' |
| Tuesday Evening |
Snow Level 3500' |
| Tuesday Night |
Snow Level 3000' |
| Wednesday Morning |
Snow Level 3500' |
| Wednesday Afternoon |
Snow Level 4000' |
| Stevens Pass | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 3500' |
| Tuesday Afternoon |
Snow Level 3500' |
| Tuesday Evening |
Snow Level 3500' |
| Tuesday Night |
Snow Level 2500' |
| Wednesday Morning |
Snow Level 3000' |
| Wednesday Afternoon |
Snow Level 3500' |
| Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 4000' |
| Tuesday Afternoon |
Snow Level 3500' |
| Tuesday Evening |
Snow Level 3500' |
| Tuesday Night |
Snow Level 3000' |
| Wednesday Morning |
Snow Level 3000' |
| Wednesday Afternoon |
Snow Level 3500' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 4000' |
| Tuesday Afternoon |
Snow Level 4000' |
| Tuesday Evening |
Snow Level 3500' |
| Tuesday Night |
Snow Level 3000' |
| Wednesday Morning |
Snow Level 3500' |
| Wednesday Afternoon |
Snow Level 4000' |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Morning |
Snow Level 5000' |
| Tuesday Afternoon |
Snow Level 4500' |
| Tuesday Evening |
Snow Level 4500' |
| Tuesday Night |
Snow Level 4000' |
| Wednesday Morning |
Snow Level 4000' |
| Wednesday Afternoon |
Snow Level 4500' |
* 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
| Tuesday | Tuesday Night | Tuesday | |
|---|---|---|---|
| 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | 0.50 - 0.75 | 0.25 | LT 0.10 |
| Mt Baker Ski Area | 1.00 | 0.50 - 0.75 | 0.25 - 0.50 |
| Washington Pass | 0.75 | 0.50 | LT 0.25 |
| Leavenworth | 0.25 | 0.25 | LT 0.10 |
| Stevens Pass | 0.75 -1.00 | 0.50 - 0.75 | 0.25 |
| Snoqualmie Pass | 1.00 - 1.50 | 0.50 - 0.75 | LT 0.25 |
| Mission Ridge | 0.50 - 0.75 | 0.25 | 0 |
| Crystal Mt | 0.75 | 0.25 | LT 0.10 |
| Paradise | 1.50 | 1.00 | 0.25 |
| White Pass | 1.00 | 0.50 | LT 0.10 |
| Mt Hood Meadows | 2.00 | 0.75 | LT 0.10 |
| Timberline | 2.50 | 0.75 -1.00 | LT 0.10 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Tuesday | 0.50 - 0.75 |
| Tuesday Night | 0.25 |
| Tuesday | LT 0.10 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Tuesday | 1.00 |
| Tuesday Night | 0.50 - 0.75 |
| Tuesday | 0.25 - 0.50 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Tuesday | 0.75 |
| Tuesday Night | 0.50 |
| Tuesday | LT 0.25 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Tuesday | 0.25 |
| Tuesday Night | 0.25 |
| Tuesday | LT 0.10 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Tuesday | 0.75 -1.00 |
| Tuesday Night | 0.50 - 0.75 |
| Tuesday | 0.25 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Tuesday | 1.00 - 1.50 |
| Tuesday Night | 0.50 - 0.75 |
| Tuesday | LT 0.25 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Tuesday | 0.50 - 0.75 |
| Tuesday Night | 0.25 |
| Tuesday | 0 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Tuesday | 0.75 |
| Tuesday Night | 0.25 |
| Tuesday | LT 0.10 |
| Paradise | Precipitation Forecast |
|---|---|
| Tuesday | 1.50 |
| Tuesday Night | 1.00 |
| Tuesday | 0.25 |
| White Pass | Precipitation Forecast |
|---|---|
| Tuesday | 1.00 |
| Tuesday Night | 0.50 |
| Tuesday | LT 0.10 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Tuesday | 2.00 |
| Tuesday Night | 0.75 |
| Tuesday | LT 0.10 |
| Timberline | Precipitation Forecast |
|---|---|
| Tuesday | 2.50 |
| Tuesday Night | 0.75 -1.00 |
| Tuesday | 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: 6:39 AM PST Tuesday, December 18, 2018
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Tuesday Morning | SW 20 - 30 | SSW 20 - 30 | SW 25 - 35 | SSW 25 - 35 | SW 50 - 70 |
| Tuesday Afternoon | SW 30 - 45 | SW 25 - 35 | WSW 30 - 45 | SW 25 - 35 | WSW 35 - 50 |
| Tuesday Evening | WSW 30 - 45 | WSW 25 - 35 | WSW 30 - 45 | WSW 25 - 35 | WSW 35 - 50 |
| Tuesday Night | WSW 30 - 45 | WSW 25 - 35 | WSW 30 - 45 | WSW 25 - 35 | WSW 35 - 50 |
| Wednesday Morning | SW 15 - 25 | SW 20 - 30 | SW 25 - 35 | SW 15 - 25 | WSW 20 - 30 |
| Wednesday Afternoon | S 5 - 15 | S 10 - 20 | SSW 10 - 20 | S 5 - 15 | SSE 15 - 25 |
| Hurricane Ridge | Elevation |
|---|---|
| Tuesday Morning | SW 20 - 30 |
| Tuesday Afternoon | SW 30 - 45 |
| Tuesday Evening | WSW 30 - 45 |
| Tuesday Night | WSW 30 - 45 |
| Wednesday Morning | SW 15 - 25 |
| Wednesday Afternoon | S 5 - 15 |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Morning | SSW 20 - 30 |
| Tuesday Afternoon | SW 25 - 35 |
| Tuesday Evening | WSW 25 - 35 |
| Tuesday Night | WSW 25 - 35 |
| Wednesday Morning | SW 20 - 30 |
| Wednesday Afternoon | S 10 - 20 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Morning | SW 25 - 35 |
| Tuesday Afternoon | WSW 30 - 45 |
| Tuesday Evening | WSW 30 - 45 |
| Tuesday Night | WSW 30 - 45 |
| Wednesday Morning | SW 25 - 35 |
| Wednesday Afternoon | SSW 10 - 20 |
| Mt. Rainier | Elevation |
|---|---|
| Tuesday Morning | SSW 25 - 35 |
| Tuesday Afternoon | SW 25 - 35 |
| Tuesday Evening | WSW 25 - 35 |
| Tuesday Night | WSW 25 - 35 |
| Wednesday Morning | SW 15 - 25 |
| Wednesday Afternoon | S 5 - 15 |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Morning | SW 50 - 70 |
| Tuesday Afternoon | WSW 35 - 50 |
| Tuesday Evening | WSW 35 - 50 |
| Tuesday Night | WSW 35 - 50 |
| Wednesday Morning | WSW 20 - 30 |
| Wednesday Afternoon | SSE 15 - 25 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Tuesday Morning | SW 20 - 30 |
| Tuesday Afternoon | SW 30 - 45 |
| Tuesday Evening | WSW 30 - 45 |
| Tuesday Night | WSW 30 - 45 |
| Wednesday Morning | SW 15 - 25 |
| Wednesday Afternoon | S 5 - 15 |
| Mt. Baker | Direction - Speed |
|---|---|
| Tuesday Morning | SSW 20 - 30 |
| Tuesday Afternoon | SW 25 - 35 |
| Tuesday Evening | WSW 25 - 35 |
| Tuesday Night | WSW 25 - 35 |
| Wednesday Morning | SW 20 - 30 |
| Wednesday Afternoon | S 10 - 20 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Tuesday Morning | SW 25 - 35 |
| Tuesday Afternoon | WSW 30 - 45 |
| Tuesday Evening | WSW 30 - 45 |
| Tuesday Night | WSW 30 - 45 |
| Wednesday Morning | SW 25 - 35 |
| Wednesday Afternoon | SSW 10 - 20 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Tuesday Morning | SSW 25 - 35 |
| Tuesday Afternoon | SW 25 - 35 |
| Tuesday Evening | WSW 25 - 35 |
| Tuesday Night | WSW 25 - 35 |
| Wednesday Morning | SW 15 - 25 |
| Wednesday Afternoon | S 5 - 15 |
| Mt. Hood | Direction - Speed |
|---|---|
| Tuesday Morning | SW 50 - 70 |
| Tuesday Afternoon | WSW 35 - 50 |
| Tuesday Evening | WSW 35 - 50 |
| Tuesday Night | WSW 35 - 50 |
| Wednesday Morning | WSW 20 - 30 |
| Wednesday Afternoon | SSE 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.
Free Winds at 9000' (mph)
| Mt. Baker | Washington Pass | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Tuesday Morning | SW 30 - 45 | SSW 30 - 45 | WSW 40 - 55 | WSW 45 - 65 | WSW 75 - 95 |
| Tuesday Afternoon | SW 40 - 60 | SW 35 - 50 | WSW 50 - 70 | WSW 55 - 75 | WSW 60 - 80 |
| Tuesday Evening | WSW 40 - 60 | WSW 35 - 50 | WSW 50 - 70 | WSW 50 - 70 | WSW 55 - 75 |
| Tuesday Night | WSW 40 - 60 | WSW 45 - 65 | WSW 45 - 65 | WSW 45 - 65 | WSW 50 - 70 |
| Wednesday Morning | WSW 30 - 45 | WSW 35 - 50 | WSW 30 - 45 | WSW 35 - 50 | WSW 35 - 50 |
| Wednesday Afternoon | SW 15 - 25 | SW 15 - 25 | SW 30 - 45 | SW 35 - 50 | SW 55 - 75 |
| Mt. Baker | Direction - Speed |
|---|---|
| Tuesday Morning | SW 30 - 45 |
| Tuesday Afternoon | SW 40 - 60 |
| Tuesday Evening | WSW 40 - 60 |
| Tuesday Night | WSW 40 - 60 |
| Wednesday Morning | WSW 30 - 45 |
| Wednesday Afternoon | SW 15 - 25 |
| Washington Pass | Direction - Speed |
|---|---|
| Tuesday Morning | SSW 30 - 45 |
| Tuesday Afternoon | SW 35 - 50 |
| Tuesday Evening | WSW 35 - 50 |
| Tuesday Night | WSW 45 - 65 |
| Wednesday Morning | WSW 35 - 50 |
| Wednesday Afternoon | SW 15 - 25 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Tuesday Morning | WSW 40 - 55 |
| Tuesday Afternoon | WSW 50 - 70 |
| Tuesday Evening | WSW 50 - 70 |
| Tuesday Night | WSW 45 - 65 |
| Wednesday Morning | WSW 30 - 45 |
| Wednesday Afternoon | SW 30 - 45 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Tuesday Morning | WSW 45 - 65 |
| Tuesday Afternoon | WSW 55 - 75 |
| Tuesday Evening | WSW 50 - 70 |
| Tuesday Night | WSW 45 - 65 |
| Wednesday Morning | WSW 35 - 50 |
| Wednesday Afternoon | SW 35 - 50 |
| Mt. Hood | Direction - Speed |
|---|---|
| Tuesday Morning | WSW 75 - 95 |
| Tuesday Afternoon | WSW 60 - 80 |
| Tuesday Evening | WSW 55 - 75 |
| Tuesday Night | WSW 50 - 70 |
| Wednesday Morning | WSW 35 - 50 |
| Wednesday Afternoon | SW 55 - 75 |
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 17, 2018
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