Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Weather Synopsis for Sunday night through Sunday
Warm frontal moisture from a wet and mild system with a subtropical tap has reached the Olympic Peninsula late this afternoon. Precipitation from this system will mainly impact the Olympics and North Cascades until the associated frontal boundary pushes through late Monday night. Mt. Baker will pick up the most precipitation from this event over the next 2 days.
Snow levels will rise tonight and again on Monday. Precipitation should start out as a light wintry mix with some freezing rain at Stevens and Snoqualmie Passes before transitioning to light rain Monday morning. Areas along the west slopes of the Cascades will see mostly rain from this event below 7000'. Washington Pass will hold onto colder air longer and this system should produce mainly snowfall for that area while areas further south along the east slopes will also eventually transition to rain.
As the front passes through the Cascades Tuesday, cooler air will filter into the region and the precipitation will become showery in nature.
Weather Forecast
Hurricane Ridge
| Sunday Night | Light rain and snow. Warming trend. |
| Monday | Rain. Warmer. Windy. |
Mt. Baker
| Sunday Night | Light rain and snow. Warming trend. |
| Monday | Rain and snow. Warmer. Windy. |
Stevens and Snoqualmie Pass
| Sunday Night | Patchy light snow or freezing rain developing. Slow warming trend. |
| Monday | Occasional light freezing rain becoming periods of light rain first at Snoqualmie in the morning and then closer to mid-day for Stevens. Warming trend. |
Mt. Rainier and Crystal
| Sunday Night | Light rain and snow developing. Warming trend. |
| Monday | Periods of light rain. Warmer. |
Washington Pass and Leavenworth
| Sunday Night | Light snow developing overnight. |
| Monday | Light snow Washington Pass area. Periods of light snow or freezing rain Leavenworth becoming periods of light rain around mid-day. |
Mt. Hood
| Sunday Night | Cloudy with light rain possible late tonight. Warming trend. |
| Monday | Periods of light rain. Warmer. |
Issued: 4:58 PM PST Sunday, November 25, 2018
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Sunday Evening | Snow Level * | 7000' | 4500' | 3500' | 2000' | 3000' | 3000' | 6000' | 6000' |
| Sunday Night | Snow Level * | 8000' | 6500' | 4000' | 2000' | 4500' | 6000' | 7500' | 8000' |
| Monday Morning | Snow Level * | 8500' | 8000' | 4500' | 6000' | 7000' | 7000' | 8000' | 8500' |
| Monday Afternoon | Snow Level * | 8500' | 8000' | 4500' | 7000' | 7000' | 8000' | 8500' | 8500' |
| Monday Evening | Snow Level * | 8500' | 7500' | 5000' | 6000' | 6000' | 7500' | 7500' | 9000' |
| Monday Night | Snow Level * | 8000' | 7000' | 4500' | 5000' | 4500' | 7000' | 7000' | 7500' |
| Tuesday Morning | Snow Level * | 6500' | 6500' | 4000' | 7000' | 4000' | 4500' | 7000' | 7500' |
| Tuesday Afternoon | Snow Level | 5500' | 5500' | 5000' | 5500' | 5500' | 5500' | 6000' | 6500' |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Evening |
Snow Level 7000' (Easterly Flow *) |
| Sunday Night |
Snow Level 8000' (Easterly Flow *) |
| Monday Morning |
Snow Level 8500' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 8500' (Easterly Flow *) |
| Monday Evening |
Snow Level 8500' (Easterly Flow *) |
| Monday Night |
Snow Level 8000' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 6500' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 5500' |
| Mt. Baker | Elevation |
|---|---|
| Sunday Evening |
Snow Level 4500' (Easterly Flow *) |
| Sunday Night |
Snow Level 6500' (Easterly Flow *) |
| Monday Morning |
Snow Level 8000' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 8000' (Easterly Flow *) |
| Monday Evening |
Snow Level 7500' (Easterly Flow *) |
| Monday Night |
Snow Level 7000' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 6500' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 5500' |
| Washington Pass | Elevation |
|---|---|
| Sunday Evening |
Snow Level 3500' (Easterly Flow *) |
| Sunday Night |
Snow Level 4000' (Easterly Flow *) |
| Monday Morning |
Snow Level 4500' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 4500' (Easterly Flow *) |
| Monday Evening |
Snow Level 5000' (Easterly Flow *) |
| Monday Night |
Snow Level 4500' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 4000' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 5000' |
| Leavenworth | Elevation |
|---|---|
| Sunday Evening |
Snow Level 2000' (Easterly Flow *) |
| Sunday Night |
Snow Level 2000' (Easterly Flow *) |
| Monday Morning |
Snow Level 6000' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 7000' (Easterly Flow *) |
| Monday Evening |
Snow Level 6000' (Easterly Flow *) |
| Monday Night |
Snow Level 5000' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 7000' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 5500' |
| Stevens Pass | Elevation |
|---|---|
| Sunday Evening |
Snow Level 3000' (Easterly Flow *) |
| Sunday Night |
Snow Level 4500' (Easterly Flow *) |
| Monday Morning |
Snow Level 7000' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 7000' (Easterly Flow *) |
| Monday Evening |
Snow Level 6000' (Easterly Flow *) |
| Monday Night |
Snow Level 4500' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 4000' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 5500' |
| Snoqualmie Pass | Elevation |
|---|---|
| Sunday Evening |
Snow Level 3000' (Easterly Flow *) |
| Sunday Night |
Snow Level 6000' (Easterly Flow *) |
| Monday Morning |
Snow Level 7000' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 8000' (Easterly Flow *) |
| Monday Evening |
Snow Level 7500' (Easterly Flow *) |
| Monday Night |
Snow Level 7000' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 4500' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 5500' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Sunday Evening |
Snow Level 6000' (Easterly Flow *) |
| Sunday Night |
Snow Level 7500' (Easterly Flow *) |
| Monday Morning |
Snow Level 8000' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 8500' (Easterly Flow *) |
| Monday Evening |
Snow Level 7500' (Easterly Flow *) |
| Monday Night |
Snow Level 7000' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 7000' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 6000' |
| Mt. Hood | Elevation |
|---|---|
| Sunday Evening |
Snow Level 6000' (Easterly Flow *) |
| Sunday Night |
Snow Level 8000' (Easterly Flow *) |
| Monday Morning |
Snow Level 8500' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 8500' (Easterly Flow *) |
| Monday Evening |
Snow Level 9000' (Easterly Flow *) |
| Monday Night |
Snow Level 7500' (Easterly Flow *) |
| Tuesday Morning |
Snow Level 7500' (Easterly Flow *) |
| Tuesday Afternoon |
Snow Level 6500' |
* 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 Night | Sunday | Sunday Night | Sunday | |
|---|---|---|---|---|
| 4 pm - 4 am | 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | LT 0.25 | 0.25 - 0.50 | 0.75 -1.00 | LT 0.25 |
| Mt Baker Ski Area | 0.25 | 1.00 | 2.50 | 1.00 |
| Washington Pass | LT 0.10 | 0.25 | 0.25 - 0.50 | 0.50 - 0.75 |
| Stevens Pass | LT 0.10 | 0.25 | 0.25 - 0.50 | 0.50 - 0.75 |
| Snoqualmie Pass | LT 0.10 | 0.25 | 0.50 - 0.75 | 0.75 -1.00 |
| Leavenworth | LT 0.10 | LT 0.10 | 0.25 | LT 0.25 |
| Mission Ridge | LT 0.10 | LT 0.10 | 0.25 | 0.25 - 0.50 |
| Crystal Mt | LT 0.10 | LT 0.10 | 0.75 | 0.50 - 0.75 |
| Paradise | LT 0.10 | LT 0.25 | 0.50 | 0.75 |
| White Pass | LT 0.10 | LT 0.10 | 0.25 | 0.25 - 0.50 |
| Mt Hood Meadows | 0 | LT 0.10 | LT 0.10 | 0.75 |
| Timberline | 0 | LT 0.10 | LT 0.10 | 1.00 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Sunday Night | LT 0.25 |
| Sunday | 0.25 - 0.50 |
| Sunday Night | 0.75 -1.00 |
| Sunday | LT 0.25 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Sunday Night | 0.25 |
| Sunday | 1.00 |
| Sunday Night | 2.50 |
| Sunday | 1.00 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Sunday Night | LT 0.10 |
| Sunday | 0.25 |
| Sunday Night | 0.25 - 0.50 |
| Sunday | 0.50 - 0.75 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Sunday Night | LT 0.10 |
| Sunday | 0.25 |
| Sunday Night | 0.25 - 0.50 |
| Sunday | 0.50 - 0.75 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Sunday Night | LT 0.10 |
| Sunday | 0.25 |
| Sunday Night | 0.50 - 0.75 |
| Sunday | 0.75 -1.00 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Sunday Night | LT 0.10 |
| Sunday | LT 0.10 |
| Sunday Night | 0.25 |
| Sunday | LT 0.25 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Sunday Night | LT 0.10 |
| Sunday | LT 0.10 |
| Sunday Night | 0.25 |
| Sunday | 0.25 - 0.50 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Sunday Night | LT 0.10 |
| Sunday | LT 0.10 |
| Sunday Night | 0.75 |
| Sunday | 0.50 - 0.75 |
| Paradise | Precipitation Forecast |
|---|---|
| Sunday Night | LT 0.10 |
| Sunday | LT 0.25 |
| Sunday Night | 0.50 |
| Sunday | 0.75 |
| White Pass | Precipitation Forecast |
|---|---|
| Sunday Night | LT 0.10 |
| Sunday | LT 0.10 |
| Sunday Night | 0.25 |
| Sunday | 0.25 - 0.50 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Sunday | LT 0.10 |
| Sunday Night | LT 0.10 |
| Sunday | 0.75 |
| Timberline | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Sunday | LT 0.10 |
| Sunday Night | LT 0.10 |
| Sunday | 1.00 |
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: 4:58 PM PST Sunday, November 25, 2018
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Sunday Evening | SSE 15 - 25 | SSE 15 - 30 | ESE 10 - 20 | SE 5 - 15 | SSW 5 - 15 |
| Sunday Night | S 20 - 30 | SE 15 - 30 | ESE 10 - 20 | SE 10 - 20 | S 10 - 20 |
| Monday Morning | S 25 - 35 | SSE 20 - 30 | SE 10 - 20 | SSE 10 - 20 | SSW 10 - 20 |
| Monday Afternoon | S 30 - 40 | SSE 25 - 40 | SE 15 - 25 | S 15 - 25 | SSW 10 - 20 |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Evening | SSE 15 - 25 |
| Sunday Night | S 20 - 30 |
| Monday Morning | S 25 - 35 |
| Monday Afternoon | S 30 - 40 |
| Mt. Baker | Elevation |
|---|---|
| Sunday Evening | SSE 15 - 30 |
| Sunday Night | SE 15 - 30 |
| Monday Morning | SSE 20 - 30 |
| Monday Afternoon | SSE 25 - 40 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Sunday Evening | ESE 10 - 20 |
| Sunday Night | ESE 10 - 20 |
| Monday Morning | SE 10 - 20 |
| Monday Afternoon | SE 15 - 25 |
| Mt. Rainier | Elevation |
|---|---|
| Sunday Evening | SE 5 - 15 |
| Sunday Night | SE 10 - 20 |
| Monday Morning | SSE 10 - 20 |
| Monday Afternoon | S 15 - 25 |
| Mt. Hood | Elevation |
|---|---|
| Sunday Evening | SSW 5 - 15 |
| Sunday Night | S 10 - 20 |
| Monday Morning | SSW 10 - 20 |
| Monday Afternoon | SSW 10 - 20 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Sunday Evening | SSE 15 - 25 |
| Sunday Night | S 20 - 30 |
| Monday Morning | S 25 - 35 |
| Monday Afternoon | S 30 - 40 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Evening | SSE 15 - 30 |
| Sunday Night | SE 15 - 30 |
| Monday Morning | SSE 20 - 30 |
| Monday Afternoon | SSE 25 - 40 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Evening | ESE 10 - 20 |
| Sunday Night | ESE 10 - 20 |
| Monday Morning | SE 10 - 20 |
| Monday Afternoon | SE 15 - 25 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Evening | SE 5 - 15 |
| Sunday Night | SE 10 - 20 |
| Monday Morning | SSE 10 - 20 |
| Monday Afternoon | S 15 - 25 |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Evening | SSW 5 - 15 |
| Sunday Night | S 10 - 20 |
| Monday Morning | SSW 10 - 20 |
| Monday Afternoon | SSW 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 | |
|---|---|---|---|---|---|
| Sunday Evening | SW 20 - 30 | SW 20 - 30 | SW 20 - 30 | SW 15 - 25 | SW 10 - 20 |
| Sunday Night | SW 30 - 40 | SW 25 - 35 | SW 30 - 40 | SW 30 - 40 | SW 20 - 30 |
| Monday Morning | SW 35 - 45 | SW 30 - 40 | SW 30 - 40 | SW 30 - 40 | SW 25 - 35 |
| Monday Afternoon | SW 50 - 60 | SW 40 - 50 | SW 40 - 50 | SW 40 - 50 | SW 35 - 45 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Evening | SW 20 - 30 |
| Sunday Night | SW 30 - 40 |
| Monday Morning | SW 35 - 45 |
| Monday Afternoon | SW 50 - 60 |
| Washington Pass | Direction - Speed |
|---|---|
| Sunday Evening | SW 20 - 30 |
| Sunday Night | SW 25 - 35 |
| Monday Morning | SW 30 - 40 |
| Monday Afternoon | SW 40 - 50 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Evening | SW 20 - 30 |
| Sunday Night | SW 30 - 40 |
| Monday Morning | SW 30 - 40 |
| Monday Afternoon | SW 40 - 50 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Evening | SW 15 - 25 |
| Sunday Night | SW 30 - 40 |
| Monday Morning | SW 30 - 40 |
| Monday Afternoon | SW 40 - 50 |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Evening | SW 10 - 20 |
| Sunday Night | SW 20 - 30 |
| Monday Morning | SW 25 - 35 |
| Monday Afternoon | SW 35 - 45 |
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: 4:58 PM PST Sunday, November 25, 2018
Extended Weather Synopsis for Sunday night through Sunday
Post-frontal showers should diminish Tuesday night.
A weak trough will approach the area Wednesday and Wednesday night with relatively cooler snow levels. Shower activity generally looks scattered and there may be a dry window Wednesday night.
The jet stream will be aimed into Northern California on Thursday. As a result, a developing low pressure system will be steered south of our area, leaving us with disorganized showers in the longwave upper level trough. Snow levels will gradually lower at the end of the week.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Tuesday Night | Snow Level | 4000' - 5000' | 4500' - 5500' | 4500' - 5500' | |
| Wednesday | Snow Level | 4000' - 5000' | 4000' - 5000' | 4500' - 5500' | |
| Wednesday Night | Snow Level | 3000' - 4000' | 3500' - 4500' | 4500' - 5500' | |
| Thursday | Snow Level | 3000' - 4000' | 3500' - 4500' | 4000' - 5000' |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Night |
Snow Level 4000' - 5000' |
| Wednesday |
Snow Level 4000' - 5000' |
| Wednesday Night |
Snow Level 3000' - 4000' |
| Thursday |
Snow Level 3000' - 4000' |
| Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Night |
Snow Level 4500' - 5500' |
| Wednesday |
Snow Level 4000' - 5000' |
| Wednesday Night |
Snow Level 3500' - 4500' |
| Thursday |
Snow Level 3500' - 4500' |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Night |
Snow Level 4500' - 5500' |
| Wednesday |
Snow Level 4500' - 5500' |
| Wednesday Night |
Snow Level 4500' - 5500' |
| Thursday |
Snow Level 4000' - 5000' |
* 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 24, 2018
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