Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Weather Synopsis for Friday night through Thursday
Weak upper level troughing over the area and onshore flow are producing scattered showers and mostly cloudy skies over the region this afternoon. A stacked low pressure system off the Washington/Oregon coastline will rotate a frontal boundary through the Cascades overnight, bringing a few hours of light and steady precipitation as it passes inland.
The upper low will meander further inland on Saturday, keeping clouds and light showers in the forecast. Snow levels will gradually lower through the weekend. Mt. Hood will likely pick up the most snow through Saturday afternoon.
The Pacific Northwest will be on the backside of a broad longwave upper level trough covering most of the country Sunday. General instability overhead will allow some clouds and isolated showers to stick around, but more in the way of sunshine is expected the latter half of the weekend.
Weather Forecast
Hurricane Ridge
| Friday Night | Mostly cloudy with scattered light rain and snow showers. |
| Saturday | Mostly cloudy with scattered light rain and snow showers. |
Mt. Baker
| Friday Night | Mostly cloudy with scattered light rain and snow showers. |
| Saturday | Mostly cloudy with scattered light rain and snow showers in the morning becoming partly sunny in the afternoon. |
Stevens and Snoqualmie Pass
| Friday Night | Mostly cloudy with light rain and snow showers. |
| Saturday | Mostly cloudy with scattered light rain and snow showers. |
Mt. Rainier and Crystal
| Friday Night | Mostly cloudy with light rain and snow showers. |
| Saturday | Mostly cloudy with scattered light rain and snow showers. |
Washington Pass and Leavenworth
| Friday Night | Mostly cloudy with scattered light rain and snow showers. |
| Saturday | Mostly cloudy with scattered light rain and snow showers in the morning. Partial clearing in afternoon for the Washington Pass area. |
Mt. Hood
| Friday Night | Cloudy with light to occasionally moderate rain and snow showers. |
| Saturday | Cloudy with light rain and snow showers. |
Issued: 3:24 PM PST Friday, November 30, 2018
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Friday Evening | Snow Level | 3000' | 3000' | 2500' | 3000' | 3000' | 3000' | 3000' | 3000' |
| Friday Night | Snow Level | 3000' | 2500' | 2500' | 2500' | 2500' | 2500' | 2500' | 2500' |
| Saturday Morning | Snow Level | 2500' | 2000' | 2000' | 2000' | 2000' | 2000' | 1500' | 2000' |
| Saturday Afternoon | Snow Level | 2500' | 2500' | 2500' | 2500' | 2500' | 2500' | 2500' | 3000' |
| Saturday Evening | Snow Level | 2500' | 2500' | 2000' | 2500' | 2000' | 2500' | 2500' | 2500' |
| Saturday Night | Snow Level | 1500' | 1500' | 1000' | 1000' | 1500' | 1500' | 1500' | 2000' |
| Sunday Morning | Snow Level | 1500' | 1000' | 0' | 500' | 1500' | 1500' | 1000' | 2500' |
| Sunday Afternoon | Snow Level | 2000' | 1500' | 1500' | 2000' | 1500' | 2000' | 2000' | 2500' |
| Hurricane Ridge | Elevation |
|---|---|
| Friday Evening |
Snow Level 3000' |
| Friday Night |
Snow Level 3000' |
| Saturday Morning |
Snow Level 2500' |
| Saturday Afternoon |
Snow Level 2500' |
| Saturday Evening |
Snow Level 2500' |
| Saturday Night |
Snow Level 1500' |
| Sunday Morning |
Snow Level 1500' |
| Sunday Afternoon |
Snow Level 2000' |
| Mt. Baker | Elevation |
|---|---|
| Friday Evening |
Snow Level 3000' |
| Friday Night |
Snow Level 2500' |
| Saturday Morning |
Snow Level 2000' |
| Saturday Afternoon |
Snow Level 2500' |
| Saturday Evening |
Snow Level 2500' |
| Saturday Night |
Snow Level 1500' |
| Sunday Morning |
Snow Level 1000' |
| Sunday Afternoon |
Snow Level 1500' |
| Washington Pass | Elevation |
|---|---|
| Friday Evening |
Snow Level 2500' |
| Friday Night |
Snow Level 2500' |
| Saturday Morning |
Snow Level 2000' |
| Saturday Afternoon |
Snow Level 2500' |
| Saturday Evening |
Snow Level 2000' |
| Saturday Night |
Snow Level 1000' |
| Sunday Morning |
Snow Level 0' |
| Sunday Afternoon |
Snow Level 1500' |
| Leavenworth | Elevation |
|---|---|
| Friday Evening |
Snow Level 3000' |
| Friday Night |
Snow Level 2500' |
| Saturday Morning |
Snow Level 2000' |
| Saturday Afternoon |
Snow Level 2500' |
| Saturday Evening |
Snow Level 2500' |
| Saturday Night |
Snow Level 1000' |
| Sunday Morning |
Snow Level 500' |
| Sunday Afternoon |
Snow Level 2000' |
| Stevens Pass | Elevation |
|---|---|
| Friday Evening |
Snow Level 3000' |
| Friday Night |
Snow Level 2500' |
| Saturday Morning |
Snow Level 2000' |
| Saturday Afternoon |
Snow Level 2500' |
| Saturday Evening |
Snow Level 2000' |
| Saturday Night |
Snow Level 1500' |
| Sunday Morning |
Snow Level 1500' |
| Sunday Afternoon |
Snow Level 1500' |
| Snoqualmie Pass | Elevation |
|---|---|
| Friday Evening |
Snow Level 3000' |
| Friday Night |
Snow Level 2500' |
| Saturday Morning |
Snow Level 2000' |
| Saturday Afternoon |
Snow Level 2500' |
| Saturday Evening |
Snow Level 2500' |
| Saturday Night |
Snow Level 1500' |
| Sunday Morning |
Snow Level 1500' |
| Sunday Afternoon |
Snow Level 2000' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Friday Evening |
Snow Level 3000' |
| Friday Night |
Snow Level 2500' |
| Saturday Morning |
Snow Level 1500' |
| Saturday Afternoon |
Snow Level 2500' |
| Saturday Evening |
Snow Level 2500' |
| Saturday Night |
Snow Level 1500' |
| Sunday Morning |
Snow Level 1000' |
| Sunday Afternoon |
Snow Level 2000' |
| Mt. Hood | Elevation |
|---|---|
| Friday Evening |
Snow Level 3000' |
| Friday Night |
Snow Level 2500' |
| Saturday Morning |
Snow Level 2000' |
| Saturday Afternoon |
Snow Level 3000' |
| Saturday Evening |
Snow Level 2500' |
| Saturday Night |
Snow Level 2000' |
| Sunday Morning |
Snow Level 2500' |
| Sunday Afternoon |
Snow Level 2500' |
* 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
| Friday Night | Thursday | Thursday Night | Thursday | |
|---|---|---|---|---|
| 4 pm - 4 am | 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | LT 0.25 | LT 0.10 | LT 0.10 | 0 |
| Mt Baker Ski Area | LT 0.10 | LT 0.10 | LT 0.10 | 0 |
| Washington Pass | LT 0.10 | LT 0.10 | LT 0.10 | 0 |
| Stevens Pass | LT 0.25 | LT 0.10 | LT 0.10 | 0 |
| Snoqualmie Pass | LT 0.25 | LT 0.10 | LT 0.10 | 0 |
| Leavenworth | LT 0.10 | LT 0.25 | LT 0.10 | 0 |
| Mission Ridge | LT 0.10 | LT 0.25 | LT 0.10 | 0 |
| Crystal Mt | LT 0.25 | LT 0.10 | LT 0.10 | 0 |
| Paradise | 0.25 | LT 0.10 | LT 0.10 | 0 |
| White Pass | LT 0.25 | LT 0.10 | LT 0.10 | 0 |
| Mt Hood Meadows | 0.25 - 0.50 | 0.25 - 0.50 | LT 0.10 | LT 0.10 |
| Timberline | 0.50 | 0.50 | LT 0.10 | LT 0.10 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Friday Night | LT 0.25 |
| Thursday | LT 0.10 |
| Thursday Night | LT 0.10 |
| Thursday | 0 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Friday Night | LT 0.10 |
| Thursday | LT 0.10 |
| Thursday Night | LT 0.10 |
| Thursday | 0 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Friday Night | LT 0.10 |
| Thursday | LT 0.10 |
| Thursday Night | LT 0.10 |
| Thursday | 0 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Friday Night | LT 0.25 |
| Thursday | LT 0.10 |
| Thursday Night | LT 0.10 |
| Thursday | 0 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Friday Night | LT 0.25 |
| Thursday | LT 0.10 |
| Thursday Night | LT 0.10 |
| Thursday | 0 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Friday Night | LT 0.10 |
| Thursday | LT 0.25 |
| Thursday Night | LT 0.10 |
| Thursday | 0 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Friday Night | LT 0.10 |
| Thursday | LT 0.25 |
| Thursday Night | LT 0.10 |
| Thursday | 0 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Friday Night | LT 0.25 |
| Thursday | LT 0.10 |
| Thursday Night | LT 0.10 |
| Thursday | 0 |
| Paradise | Precipitation Forecast |
|---|---|
| Friday Night | 0.25 |
| Thursday | LT 0.10 |
| Thursday Night | LT 0.10 |
| Thursday | 0 |
| White Pass | Precipitation Forecast |
|---|---|
| Friday Night | LT 0.25 |
| Thursday | LT 0.10 |
| Thursday Night | LT 0.10 |
| Thursday | 0 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Friday Night | 0.25 - 0.50 |
| Thursday | 0.25 - 0.50 |
| Thursday Night | LT 0.10 |
| Thursday | LT 0.10 |
| Timberline | Precipitation Forecast |
|---|---|
| Friday Night | 0.50 |
| Thursday | 0.50 |
| Thursday Night | LT 0.10 |
| Thursday | 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: 3:24 PM PST Friday, November 30, 2018
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Friday Evening | E 5 - 15 | E 0 - 10 | E 5 - 15 | S 0 - 10 | SW 10 - 20 |
| Friday Night | E 0 - 10 | NE 0 - 10 | W 5 - 15 | S 0 - 10 | SW 5 - 15 |
| Saturday Morning | NE 0 - 10 | NE 0 - 10 | W 5 - 15 | VAR 0 - 10 | VAR 0 - 10 |
| Saturday Afternoon | NE 0 - 10 | N 0 - 10 | NW 0 - 10 | NW 0 - 10 | WNW 0 - 10 |
| Hurricane Ridge | Elevation |
|---|---|
| Friday Evening | E 5 - 15 |
| Friday Night | E 0 - 10 |
| Saturday Morning | NE 0 - 10 |
| Saturday Afternoon | NE 0 - 10 |
| Mt. Baker | Elevation |
|---|---|
| Friday Evening | E 0 - 10 |
| Friday Night | NE 0 - 10 |
| Saturday Morning | NE 0 - 10 |
| Saturday Afternoon | N 0 - 10 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Friday Evening | E 5 - 15 |
| Friday Night | W 5 - 15 |
| Saturday Morning | W 5 - 15 |
| Saturday Afternoon | NW 0 - 10 |
| Mt. Rainier | Elevation |
|---|---|
| Friday Evening | S 0 - 10 |
| Friday Night | S 0 - 10 |
| Saturday Morning | VAR 0 - 10 |
| Saturday Afternoon | NW 0 - 10 |
| Mt. Hood | Elevation |
|---|---|
| Friday Evening | SW 10 - 20 |
| Friday Night | SW 5 - 15 |
| Saturday Morning | VAR 0 - 10 |
| Saturday Afternoon | WNW 0 - 10 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Friday Evening | E 5 - 15 |
| Friday Night | E 0 - 10 |
| Saturday Morning | NE 0 - 10 |
| Saturday Afternoon | NE 0 - 10 |
| Mt. Baker | Direction - Speed |
|---|---|
| Friday Evening | E 0 - 10 |
| Friday Night | NE 0 - 10 |
| Saturday Morning | NE 0 - 10 |
| Saturday Afternoon | N 0 - 10 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Friday Evening | E 5 - 15 |
| Friday Night | W 5 - 15 |
| Saturday Morning | W 5 - 15 |
| Saturday Afternoon | NW 0 - 10 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Friday Evening | S 0 - 10 |
| Friday Night | S 0 - 10 |
| Saturday Morning | VAR 0 - 10 |
| Saturday Afternoon | NW 0 - 10 |
| Mt. Hood | Direction - Speed |
|---|---|
| Friday Evening | SW 10 - 20 |
| Friday Night | SW 5 - 15 |
| Saturday Morning | VAR 0 - 10 |
| Saturday Afternoon | WNW 0 - 10 |
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 | |
|---|---|---|---|---|---|
| Friday Evening | SE 0 - 10 | SE 5 - 15 | S 10 - 20 | SW 15 - 30 | WSW 25 - 35 |
| Friday Night | ESE 0 - 10 | SE 0 - 10 | SW 5 - 15 | SW 10 - 20 | SW 15 - 25 |
| Saturday Morning | NE 0 - 10 | ESE 0 - 10 | N 5 - 15 | WNW 0 - 10 | SW 5 - 15 |
| Saturday Afternoon | NE 0 - 10 | E 0 - 10 | NE 0 - 10 | NW 0 - 10 | NW 5 - 15 |
| Mt. Baker | Direction - Speed |
|---|---|
| Friday Evening | SE 0 - 10 |
| Friday Night | ESE 0 - 10 |
| Saturday Morning | NE 0 - 10 |
| Saturday Afternoon | NE 0 - 10 |
| Washington Pass | Direction - Speed |
|---|---|
| Friday Evening | SE 5 - 15 |
| Friday Night | SE 0 - 10 |
| Saturday Morning | ESE 0 - 10 |
| Saturday Afternoon | E 0 - 10 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Friday Evening | S 10 - 20 |
| Friday Night | SW 5 - 15 |
| Saturday Morning | N 5 - 15 |
| Saturday Afternoon | NE 0 - 10 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Friday Evening | SW 15 - 30 |
| Friday Night | SW 10 - 20 |
| Saturday Morning | WNW 0 - 10 |
| Saturday Afternoon | NW 0 - 10 |
| Mt. Hood | Direction - Speed |
|---|---|
| Friday Evening | WSW 25 - 35 |
| Friday Night | SW 15 - 25 |
| Saturday Morning | SW 5 - 15 |
| Saturday Afternoon | NW 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.
Issued: 3:24 PM PST Friday, November 30, 2018
Extended Weather Synopsis for Thursday night through Thursday
Split flow offshore will keep a slow moving low pressure system well south of us as it impacts California. The Pacific Northwest will remain high and dry through most of next week. However, surface high pressure creeping south from British Columbia will push in some of the coldest air of the season beginning early next week. Offshore flow will also ramp up during the week, with easterly winds increasing.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Sunday Night | Freezing Level | 1000' - 200' | 1000' - 2000' | 1500' - 2500' | * |
| Monday | Freezing Level | 1500' - 2500' | 1000' - 2000' | 1000' - 2000' | * |
| Monday Night | Freezing Level | 1000' - 2000' | 500' - 1500' | 500' - 1500' | * |
| Tuesday | Freezing Level | 2000' - 3000' | 500' - 1500' | 500' - 1500' | * |
| Mt. Baker | Elevation |
|---|---|
| Sunday Night |
Freezing Level 1000' - 200' (Easterly Flow *) |
| Monday |
Freezing Level 1500' - 2500' (Easterly Flow *) |
| Monday Night |
Freezing Level 1000' - 2000' (Easterly Flow *) |
| Tuesday |
Freezing Level 2000' - 3000' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Sunday Night |
Freezing Level 1000' - 2000' (Easterly Flow *) |
| Monday |
Freezing Level 1000' - 2000' (Easterly Flow *) |
| Monday Night |
Freezing Level 500' - 1500' (Easterly Flow *) |
| Tuesday |
Freezing Level 500' - 1500' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Sunday Night |
Freezing Level 1500' - 2500' (Easterly Flow *) |
| Monday |
Freezing Level 1000' - 2000' (Easterly Flow *) |
| Monday Night |
Freezing Level 500' - 1500' (Easterly Flow *) |
| Tuesday |
Freezing Level 500' - 1500' (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 29, 2018
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