Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Weather Synopsis for Monday night through Thursday
We should continue to see very light showers in the North Cascades and Olympics over the next few days as a weak high-pressure ridge holds most of the precipitation off the coast. Drier and warmer air will work in from the south and west nudging freezing levels up in most locations. East of the Cascade crest, cold air is solidly in place. Chilly east flow through the passes should keep temperatures low. The high-pressure ridge will slowly work its way east as a stronger weather system and deep trough approach the Northwest. Winds ought to increase in many locations over the next 24hrs and you may find moderate winds even at lower elevations.
Tuesday looks to be our last "dry" day prior to a major pattern shift. On Wednesday precipitation will spread over the area from west to east as the first of several weather systems impact the Olympics and Cascades. Freezing levels appear low during this first round of precipitation bringing mostly snow to the mountains. There's still a question on timing with the onset of snow. Some weather models do not bring moisture to the mountains until later in the day. This could impact snowfall totals and how much precipitation extends into areas east of the Cascade crest.
Weather Forecast
Hurricane Ridge
| Monday Night | Mostly cloudy. Moderate south winds. |
| Tuesday | Cloudy. Scattered showers possible. Winds increasing in the afternoon. |
Mt. Baker
| Monday Night | Cloudy. Scattered showers possible. Moderate winds. |
| Tuesday | Cloudy. Scattered showers possible. Moderate winds increasing in the afternoon. |
Washington Pass and Leavenworth
| Monday Night | Cloudy. Scattered showers possible near Washington Pass. |
| Tuesday | Cloudy. Scattered showers possible near Washington Pass. Winds increasing in the afternoon. |
Stevens and Snoqualmie Pass
| Monday Night | Cloudy. East flow at pass level. |
| Tuesday | Cloudy. East flow at pass level. |
Mt. Rainier, Crystal and White Pass
| Monday Night | Mostly cloudy. |
| Tuesday | Cloudy. Warming temperatures. |
Mt. Hood
| Monday Night | Cloudy. Winds increasing. |
| Tuesday | Cloudy. Moderate south winds. |
Issued: 1:48 PM PST Monday, December 16, 2019
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Monday Evening | Freezing Level * | 5500' | 4500' | 2500' | 2000' | 3500' | 4000' | 4500' | 5000' |
| Monday Night | Freezing Level * | 6000' | 4500' | 2500' | 2500' | 3500' | 4000' | 4500' | 5000' |
| Tuesday Morning | Freezing Level * | 6000' | 5000' | 2500' | 2500' | 4000' | 5000' | 5500' | 6000' |
| Tuesday Afternoon | Freezing Level * | 5500' | 5000' | 3000' | 2500' | 4500' | 5000' | 6000' | 6000' |
| Tuesday Evening | Freezing Level * | 5000' | 4500' | 2500' | 2500' | 3500' | 4500' | 5000' | 5500' |
| Tuesday Night | Freezing Level * | 5000' | 4500' | 2000' | 2000' | 2500' | 4000' | 4000' | 4500' |
| Wednesday Morning | Snow Level * | 3500' | 3000' | 1500' | 1000' | 2000' | 2500' | 2500' | 2500' |
| Wednesday Afternoon | Snow Level * | 3000' | 2500' | 1500' | 1000' | 2000' | 2000' | 2500' | 3000' |
| Hurricane Ridge | Elevation |
|---|---|
| Monday Evening |
Freezing Level 5500' (Easterly Flow *) |
| Monday Night |
Freezing Level 6000' (Easterly Flow *) |
| Tuesday Morning |
Freezing Level 6000' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 5500' (Easterly Flow *) |
| Tuesday Evening |
Freezing Level 5000' (Easterly Flow *) |
| Tuesday Night |
Freezing Level 5000' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 3500' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 3000' (Easterly Flow *) |
| Mt. Baker | Elevation |
|---|---|
| Monday Evening |
Freezing Level 4500' (Easterly Flow *) |
| Monday Night |
Freezing Level 4500' (Easterly Flow *) |
| Tuesday Morning |
Freezing Level 5000' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 5000' (Easterly Flow *) |
| Tuesday Evening |
Freezing Level 4500' (Easterly Flow *) |
| Tuesday Night |
Freezing Level 4500' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 3000' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 2500' (Easterly Flow *) |
| Washington Pass | Elevation |
|---|---|
| Monday Evening |
Freezing Level 2500' (Easterly Flow *) |
| Monday Night |
Freezing Level 2500' (Easterly Flow *) |
| Tuesday Morning |
Freezing Level 2500' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 3000' (Easterly Flow *) |
| Tuesday Evening |
Freezing Level 2500' (Easterly Flow *) |
| Tuesday Night |
Freezing Level 2000' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 1500' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 1500' (Easterly Flow *) |
| Leavenworth | Elevation |
|---|---|
| Monday Evening |
Freezing Level 2000' (Easterly Flow *) |
| Monday Night |
Freezing Level 2500' (Easterly Flow *) |
| Tuesday Morning |
Freezing Level 2500' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 2500' (Easterly Flow *) |
| Tuesday Evening |
Freezing Level 2500' (Easterly Flow *) |
| Tuesday Night |
Freezing Level 2000' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 1000' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 1000' (Easterly Flow *) |
| Stevens Pass | Elevation |
|---|---|
| Monday Evening |
Freezing Level 3500' (Easterly Flow *) |
| Monday Night |
Freezing Level 3500' (Easterly Flow *) |
| Tuesday Morning |
Freezing Level 4000' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 4500' (Easterly Flow *) |
| Tuesday Evening |
Freezing Level 3500' (Easterly Flow *) |
| Tuesday Night |
Freezing Level 2500' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 2000' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 2000' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Monday Evening |
Freezing Level 4000' (Easterly Flow *) |
| Monday Night |
Freezing Level 4000' (Easterly Flow *) |
| Tuesday Morning |
Freezing Level 5000' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 5000' (Easterly Flow *) |
| Tuesday Evening |
Freezing Level 4500' (Easterly Flow *) |
| Tuesday Night |
Freezing Level 4000' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 2500' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 2000' (Easterly Flow *) |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Monday Evening |
Freezing Level 4500' (Easterly Flow *) |
| Monday Night |
Freezing Level 4500' (Easterly Flow *) |
| Tuesday Morning |
Freezing Level 5500' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 6000' (Easterly Flow *) |
| Tuesday Evening |
Freezing Level 5000' (Easterly Flow *) |
| Tuesday Night |
Freezing Level 4000' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 2500' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 2500' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Monday Evening |
Freezing Level 5000' (Easterly Flow *) |
| Monday Night |
Freezing Level 5000' (Easterly Flow *) |
| Tuesday Morning |
Freezing Level 6000' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 6000' (Easterly Flow *) |
| Tuesday Evening |
Freezing Level 5500' (Easterly Flow *) |
| Tuesday Night |
Freezing Level 4500' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 2500' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 3000' (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
| Monday Night | Thursday | Thursday Night | Thursday | |
|---|---|---|---|---|
| 4 pm - 4 am | 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | 0 | LT 0.10 | LT 0.10 | LT 0.25 |
| Mt Baker Ski Area | LT 0.10 | LT 0.10 | LT 0.10 | 0.50 |
| Washington Pass | LT 0.10 | LT 0.10 | LT 0.10 | LT 0.25 |
| Leavenworth | 0 | 0 | 0 | LT 0.10 |
| Stevens Pass | 0 | 0 | 0 | 0.25 |
| Snoqualmie Pass | 0 | 0 | 0 | 0.25 - 0.50 |
| Mission Ridge | 0 | 0 | 0 | LT 0.10 |
| Crystal Mt | 0 | 0 | 0 | 0.25 - 0.50 |
| Paradise | 0 | 0 | 0 | 0.50 |
| White Pass | 0 | 0 | 0 | 0.25 |
| Mt Hood Meadows | 0 | 0 | 0 | 0.25 - 0.50 |
| Timberline | 0 | 0 | 0 | 0.25 - 0.50 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Monday Night | 0 |
| Thursday | LT 0.10 |
| Thursday Night | LT 0.10 |
| Thursday | LT 0.25 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Monday Night | LT 0.10 |
| Thursday | LT 0.10 |
| Thursday Night | LT 0.10 |
| Thursday | 0.50 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Monday Night | LT 0.10 |
| Thursday | LT 0.10 |
| Thursday Night | LT 0.10 |
| Thursday | LT 0.25 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Monday Night | 0 |
| Thursday | 0 |
| Thursday Night | 0 |
| Thursday | LT 0.10 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Monday Night | 0 |
| Thursday | 0 |
| Thursday Night | 0 |
| Thursday | 0.25 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Monday Night | 0 |
| Thursday | 0 |
| Thursday Night | 0 |
| Thursday | 0.25 - 0.50 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Monday Night | 0 |
| Thursday | 0 |
| Thursday Night | 0 |
| Thursday | LT 0.10 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Monday Night | 0 |
| Thursday | 0 |
| Thursday Night | 0 |
| Thursday | 0.25 - 0.50 |
| Paradise | Precipitation Forecast |
|---|---|
| Monday Night | 0 |
| Thursday | 0 |
| Thursday Night | 0 |
| Thursday | 0.50 |
| White Pass | Precipitation Forecast |
|---|---|
| Monday Night | 0 |
| Thursday | 0 |
| Thursday Night | 0 |
| Thursday | 0.25 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Monday Night | 0 |
| Thursday | 0 |
| Thursday Night | 0 |
| Thursday | 0.25 - 0.50 |
| Timberline | Precipitation Forecast |
|---|---|
| Monday Night | 0 |
| Thursday | 0 |
| Thursday Night | 0 |
| Thursday | 0.25 - 0.50 |
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: 1:48 PM PST Monday, December 16, 2019
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Monday Evening | SSW 10 - 20 | S 10 - 20 | SW 5 - 15 | SSW 5 - 15 | S 5 - 15 |
| Monday Night | S 10 - 20 | S 10 - 20 | S 5 - 15 | S 5 - 15 | S 10 - 20 |
| Tuesday Morning | SSW 10 - 20 | S 10 - 20 | SSE 5 - 15 | S 5 - 15 | S 10 - 20 |
| Tuesday Afternoon | SSW 15 - 25 | SSW 15 - 25 | S 5 - 15 | S 5 - 15 | S 10 - 20 |
| Hurricane Ridge | Elevation |
|---|---|
| Monday Evening | SSW 10 - 20 |
| Monday Night | S 10 - 20 |
| Tuesday Morning | SSW 10 - 20 |
| Tuesday Afternoon | SSW 15 - 25 |
| Mt. Baker | Elevation |
|---|---|
| Monday Evening | S 10 - 20 |
| Monday Night | S 10 - 20 |
| Tuesday Morning | S 10 - 20 |
| Tuesday Afternoon | SSW 15 - 25 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Monday Evening | SW 5 - 15 |
| Monday Night | S 5 - 15 |
| Tuesday Morning | SSE 5 - 15 |
| Tuesday Afternoon | S 5 - 15 |
| Mt. Rainier | Elevation |
|---|---|
| Monday Evening | SSW 5 - 15 |
| Monday Night | S 5 - 15 |
| Tuesday Morning | S 5 - 15 |
| Tuesday Afternoon | S 5 - 15 |
| Mt. Hood | Elevation |
|---|---|
| Monday Evening | S 5 - 15 |
| Monday Night | S 10 - 20 |
| Tuesday Morning | S 10 - 20 |
| Tuesday Afternoon | S 10 - 20 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Monday Evening | SSW 10 - 20 |
| Monday Night | S 10 - 20 |
| Tuesday Morning | SSW 10 - 20 |
| Tuesday Afternoon | SSW 15 - 25 |
| Mt. Baker | Direction - Speed |
|---|---|
| Monday Evening | S 10 - 20 |
| Monday Night | S 10 - 20 |
| Tuesday Morning | S 10 - 20 |
| Tuesday Afternoon | SSW 15 - 25 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Monday Evening | SW 5 - 15 |
| Monday Night | S 5 - 15 |
| Tuesday Morning | SSE 5 - 15 |
| Tuesday Afternoon | S 5 - 15 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Monday Evening | SSW 5 - 15 |
| Monday Night | S 5 - 15 |
| Tuesday Morning | S 5 - 15 |
| Tuesday Afternoon | S 5 - 15 |
| Mt. Hood | Direction - Speed |
|---|---|
| Monday Evening | S 5 - 15 |
| Monday Night | S 10 - 20 |
| Tuesday Morning | S 10 - 20 |
| Tuesday Afternoon | S 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 | |
|---|---|---|---|---|---|
| Monday Evening | WSW 25 - 35 | WSW 30 - 40 | WSW 20 - 30 | SW 20 - 30 | SW 20 - 30 |
| Monday Night | SW 30 - 40 | SW 30 - 40 | SW 25 - 35 | SW 25 - 35 | SW 25 - 35 |
| Tuesday Morning | SW 35 - 45 | SW 35 - 45 | SW 30 - 40 | SW 30 - 40 | SW 25 - 35 |
| Tuesday Afternoon | SW 40 - 55 | SW 40 - 55 | SW 35 - 45 | SW 35 - 45 | SW 30 - 40 |
| Mt. Baker | Direction - Speed |
|---|---|
| Monday Evening | WSW 25 - 35 |
| Monday Night | SW 30 - 40 |
| Tuesday Morning | SW 35 - 45 |
| Tuesday Afternoon | SW 40 - 55 |
| Washington Pass | Direction - Speed |
|---|---|
| Monday Evening | WSW 30 - 40 |
| Monday Night | SW 30 - 40 |
| Tuesday Morning | SW 35 - 45 |
| Tuesday Afternoon | SW 40 - 55 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Monday Evening | WSW 20 - 30 |
| Monday Night | SW 25 - 35 |
| Tuesday Morning | SW 30 - 40 |
| Tuesday Afternoon | SW 35 - 45 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Monday Evening | SW 20 - 30 |
| Monday Night | SW 25 - 35 |
| Tuesday Morning | SW 30 - 40 |
| Tuesday Afternoon | SW 35 - 45 |
| Mt. Hood | Direction - Speed |
|---|---|
| Monday Evening | SW 20 - 30 |
| Monday Night | SW 25 - 35 |
| Tuesday Morning | SW 25 - 35 |
| Tuesday Afternoon | SW 30 - 40 |
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: 1:48 PM PST Monday, December 16, 2019
Extended Weather Synopsis for Thursday night through Thursday
The active weather pattern beginning Wednesday should continue into the weekend. A strong stream moisture appears to impact the region Thursday through Saturday. Weather models continue to agree on the general weather pattern but diverge on specifics such as snow level and available water. Keep these storms on your mind as we head through the week.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Wednesday Night | Snow Level | 2000' - 3500' | 2000' - 3500' | 3000' - 4000' | * |
| Thursday | Snow Level | 2000' - 3500' | 2000' - 3500' | 3500' - 5000' | * |
| Thursday Night | Snow Level | 2500' - 3500' | 2500' - 4000' | 4500' - 6000' | * |
| Friday | Snow Level | 3000' - 4500' | 3000' - 4500' | 4500' - 6000' |
| Mt. Baker | Elevation |
|---|---|
| Wednesday Night |
Snow Level 2000' - 3500' (Easterly Flow *) |
| Thursday |
Snow Level 2000' - 3500' (Easterly Flow *) |
| Thursday Night |
Snow Level 2500' - 3500' (Easterly Flow *) |
| Friday |
Snow Level 3000' - 4500' |
| Snoqualmie Pass | Elevation |
|---|---|
| Wednesday Night |
Snow Level 2000' - 3500' (Easterly Flow *) |
| Thursday |
Snow Level 2000' - 3500' (Easterly Flow *) |
| Thursday Night |
Snow Level 2500' - 4000' (Easterly Flow *) |
| Friday |
Snow Level 3000' - 4500' |
| Mt. Hood | Elevation |
|---|---|
| Wednesday Night |
Snow Level 3000' - 4000' (Easterly Flow *) |
| Thursday |
Snow Level 3500' - 5000' (Easterly Flow *) |
| Thursday Night |
Snow Level 4500' - 6000' (Easterly Flow *) |
| Friday |
Snow Level 4500' - 6000' |
* 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 Dec 16, 2019
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