Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Weather Synopsis for Tuesday night through Sunday
3:15 PM: Updated Snow Levels for east slopes Wednesday
As one upper low weakens over southern B.C. Tuesday night, a secondary low offshore and rotating south will begin to amplify the flow such that the flow aloft turns more southwesterly. A low pressure system currently aimed into California will begin to push northeast along the east slopes of the Cascades and Mt. Hood Tuesday night with increasing light snowfall. As the low digs offshore and flow aloft becomes even more southerly, clouds and snow showers will fill in for the west slopes of the Cascades Wednesday afternoon. The brief period of southerly flow aloft should also temporarily moderate snow levels Wednesday afternoon relative to our extended cool stretch.
An upper level shortwave trough rotating from the upper low parked offshore will push an organized band of showers through Wednesday evening with showers waning after midnight. This will also flip the winds from easterly to westerly at Pass level. The Mt. Baker area may see more moderate snow showers Wednesday night in this SW flow pattern.
The broad upper low will weaken and move inland on Thursday. This will once again mean plenty of showers and clouds, especially in the afternoon for the mountains with cool snow levels.
Weather Forecast
Hurricane Ridge
| Tuesday Night | Partly cloudy. |
| Wednesday | Partly cloudy in the morning, becoming mostly cloudy with a chance of afternoon snow showers. |
Mt. Baker
| Tuesday Night | Mostly cloudy. |
| Wednesday | Partly cloudy in the morning, becoming light snow developing in the afternoon. |
Washington Pass and Leavenworth
| Tuesday Night | Cloudy with light snow developing after midnight. |
| Wednesday | Cloudy with light snow. |
Stevens and Snoqualmie Pass
| Tuesday Night | Partly cloudy in the evening, becoming cloudy after midnight with a chance of light snow. Light to moderate east winds at Pass level. |
| Wednesday | Cloudy with periods of light snow. Light east winds at Pass level becoming west late. |
Mt. Rainier, Crystal and White Pass
| Tuesday Night | Partly cloudy in the evening, becoming cloudy after midnight with a chance of light snow. |
| Wednesday | Cloudy with periods of light snow. |
Mt. Hood
| Tuesday Night | Cloudy with light snow developing after midnight. |
| Wednesday | Light snow. |
Issued: 3:17 PM PST Tuesday, March 5, 2019
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Tuesday Evening | Snow Level * | 500' | 500' | 500' | 500' | 500' | 500' | 500' | 500' |
| Tuesday Night | Snow Level * | 500' | 500' | 500' | 500' | 500' | 500' | 500' | 500' |
| Wednesday Morning | Snow Level * | 500' | 500' | 500' | 500' | 500' | 500' | 500' | 500' |
| Wednesday Afternoon | Snow Level | 2000' | 2000' | 1500' | 1500' | 2000' | 2000' | 2000' | 2000' |
| Wednesday Evening | Snow Level | 2000' | 2000' | 1500' | 1500' | 2000' | 2000' | 2000' | 2000' |
| Wednesday Night | Snow Level | 1000' | 1000' | 1000' | 1000' | 1000' | 1000' | 1000' | 1000' |
| Thursday Morning | Snow Level | 500' | 500' | 500' | 500' | 500' | 500' | 500' | 500' |
| Thursday Afternoon | Snow Level | 1000' | 1000' | 1000' | 1000' | 1000' | 1000' | 1000' | 1000' |
| Hurricane Ridge | Elevation |
|---|---|
| Tuesday Evening |
Snow Level 500' (Easterly Flow *) |
| Tuesday Night |
Snow Level 500' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 500' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 2000' |
| Wednesday Evening |
Snow Level 2000' |
| Wednesday Night |
Snow Level 1000' |
| Thursday Morning |
Snow Level 500' |
| Thursday Afternoon |
Snow Level 1000' |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Evening |
Snow Level 500' (Easterly Flow *) |
| Tuesday Night |
Snow Level 500' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 500' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 2000' |
| Wednesday Evening |
Snow Level 2000' |
| Wednesday Night |
Snow Level 1000' |
| Thursday Morning |
Snow Level 500' |
| Thursday Afternoon |
Snow Level 1000' |
| Washington Pass | Elevation |
|---|---|
| Tuesday Evening |
Snow Level 500' (Easterly Flow *) |
| Tuesday Night |
Snow Level 500' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 500' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 1500' |
| Wednesday Evening |
Snow Level 1500' |
| Wednesday Night |
Snow Level 1000' |
| Thursday Morning |
Snow Level 500' |
| Thursday Afternoon |
Snow Level 1000' |
| Leavenworth | Elevation |
|---|---|
| Tuesday Evening |
Snow Level 500' (Easterly Flow *) |
| Tuesday Night |
Snow Level 500' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 500' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 1500' |
| Wednesday Evening |
Snow Level 1500' |
| Wednesday Night |
Snow Level 1000' |
| Thursday Morning |
Snow Level 500' |
| Thursday Afternoon |
Snow Level 1000' |
| Stevens Pass | Elevation |
|---|---|
| Tuesday Evening |
Snow Level 500' (Easterly Flow *) |
| Tuesday Night |
Snow Level 500' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 500' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 2000' |
| Wednesday Evening |
Snow Level 2000' |
| Wednesday Night |
Snow Level 1000' |
| Thursday Morning |
Snow Level 500' |
| Thursday Afternoon |
Snow Level 1000' |
| Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Evening |
Snow Level 500' (Easterly Flow *) |
| Tuesday Night |
Snow Level 500' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 500' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 2000' |
| Wednesday Evening |
Snow Level 2000' |
| Wednesday Night |
Snow Level 1000' |
| Thursday Morning |
Snow Level 500' |
| Thursday Afternoon |
Snow Level 1000' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Tuesday Evening |
Snow Level 500' (Easterly Flow *) |
| Tuesday Night |
Snow Level 500' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 500' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 2000' |
| Wednesday Evening |
Snow Level 2000' |
| Wednesday Night |
Snow Level 1000' |
| Thursday Morning |
Snow Level 500' |
| Thursday Afternoon |
Snow Level 1000' |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Evening |
Snow Level 500' (Easterly Flow *) |
| Tuesday Night |
Snow Level 500' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 500' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 2000' |
| Wednesday Evening |
Snow Level 2000' |
| Wednesday Night |
Snow Level 1000' |
| Thursday Morning |
Snow Level 500' |
| Thursday Afternoon |
Snow Level 1000' |
* 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 Night | Sunday | Sunday Night | Sunday | |
|---|---|---|---|---|
| 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 0.10 |
| Mt Baker Ski Area | 0 | LT 0.25 | 0.25 | LT 0.25 |
| Washington Pass | 0 | LT 0.25 | LT 0.10 | LT 0.10 |
| Leavenworth | LT 0.10 | LT 0.25 | LT 0.10 | 0 |
| Stevens Pass | 0 | LT 0.25 | LT 0.25 | LT 0.25 |
| Snoqualmie Pass | 0 | LT 0.25 | LT 0.25 | 0.25 |
| Mission Ridge | LT 0.10 | LT 0.25 | LT 0.10 | LT 0.10 |
| Crystal Mt | 0 | LT 0.25 | LT 0.10 | LT 0.10 |
| Paradise | 0 | LT 0.25 | LT 0.25 | 0.25 |
| White Pass | LT 0.10 | LT 0.25 | LT 0.25 | LT 0.25 |
| Mt Hood Meadows | LT 0.10 | LT 0.25 | LT 0.25 | 0.25 |
| Timberline | LT 0.25 | 0.25 | 0.25 | 0.25 - 0.50 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Tuesday Night | 0 |
| Sunday | LT 0.10 |
| Sunday Night | LT 0.10 |
| Sunday | LT 0.10 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Tuesday Night | 0 |
| Sunday | LT 0.25 |
| Sunday Night | 0.25 |
| Sunday | LT 0.25 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Tuesday Night | 0 |
| Sunday | LT 0.25 |
| Sunday Night | LT 0.10 |
| Sunday | LT 0.10 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Tuesday Night | LT 0.10 |
| Sunday | LT 0.25 |
| Sunday Night | LT 0.10 |
| Sunday | 0 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Tuesday Night | 0 |
| Sunday | LT 0.25 |
| Sunday Night | LT 0.25 |
| Sunday | LT 0.25 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Tuesday Night | 0 |
| Sunday | LT 0.25 |
| Sunday Night | LT 0.25 |
| Sunday | 0.25 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Tuesday Night | LT 0.10 |
| Sunday | LT 0.25 |
| Sunday Night | LT 0.10 |
| Sunday | LT 0.10 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Tuesday Night | 0 |
| Sunday | LT 0.25 |
| Sunday Night | LT 0.10 |
| Sunday | LT 0.10 |
| Paradise | Precipitation Forecast |
|---|---|
| Tuesday Night | 0 |
| Sunday | LT 0.25 |
| Sunday Night | LT 0.25 |
| Sunday | 0.25 |
| White Pass | Precipitation Forecast |
|---|---|
| Tuesday Night | LT 0.10 |
| Sunday | LT 0.25 |
| Sunday Night | LT 0.25 |
| Sunday | LT 0.25 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Tuesday Night | LT 0.10 |
| Sunday | LT 0.25 |
| Sunday Night | LT 0.25 |
| Sunday | 0.25 |
| Timberline | Precipitation Forecast |
|---|---|
| Tuesday Night | LT 0.25 |
| Sunday | 0.25 |
| Sunday Night | 0.25 |
| Sunday | 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: 3:17 PM PST Tuesday, March 5, 2019
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Tuesday Evening | E 0 - 10 | E 0 - 10 | E 10 - 20 | E 5 - 15 | E 5 - 15 |
| Tuesday Night | E 0 - 10 | ENE 0 - 10 | E 5 - 15 | E 5 - 15 | E 5 - 15 |
| Wednesday Morning | E 0 - 10 | E 0 - 10 | E 5 - 15 | E 5 - 15 | E 0 - 10 |
| Wednesday Afternoon | VAR 0 - 10 | SW 0 - 10 | E 0 - 10 | E 0 - 10 | SW 0 - 10 |
| Hurricane Ridge | Elevation |
|---|---|
| Tuesday Evening | E 0 - 10 |
| Tuesday Night | E 0 - 10 |
| Wednesday Morning | E 0 - 10 |
| Wednesday Afternoon | VAR 0 - 10 |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Evening | E 0 - 10 |
| Tuesday Night | ENE 0 - 10 |
| Wednesday Morning | E 0 - 10 |
| Wednesday Afternoon | SW 0 - 10 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Evening | E 10 - 20 |
| Tuesday Night | E 5 - 15 |
| Wednesday Morning | E 5 - 15 |
| Wednesday Afternoon | E 0 - 10 |
| Mt. Rainier | Elevation |
|---|---|
| Tuesday Evening | E 5 - 15 |
| Tuesday Night | E 5 - 15 |
| Wednesday Morning | E 5 - 15 |
| Wednesday Afternoon | E 0 - 10 |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Evening | E 5 - 15 |
| Tuesday Night | E 5 - 15 |
| Wednesday Morning | E 0 - 10 |
| Wednesday Afternoon | SW 0 - 10 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Tuesday Evening | E 0 - 10 |
| Tuesday Night | E 0 - 10 |
| Wednesday Morning | E 0 - 10 |
| Wednesday Afternoon | VAR 0 - 10 |
| Mt. Baker | Direction - Speed |
|---|---|
| Tuesday Evening | E 0 - 10 |
| Tuesday Night | ENE 0 - 10 |
| Wednesday Morning | E 0 - 10 |
| Wednesday Afternoon | SW 0 - 10 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Tuesday Evening | E 10 - 20 |
| Tuesday Night | E 5 - 15 |
| Wednesday Morning | E 5 - 15 |
| Wednesday Afternoon | E 0 - 10 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Tuesday Evening | E 5 - 15 |
| Tuesday Night | E 5 - 15 |
| Wednesday Morning | E 5 - 15 |
| Wednesday Afternoon | E 0 - 10 |
| Mt. Hood | Direction - Speed |
|---|---|
| Tuesday Evening | E 5 - 15 |
| Tuesday Night | E 5 - 15 |
| Wednesday Morning | E 0 - 10 |
| Wednesday Afternoon | SW 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 | |
|---|---|---|---|---|---|
| Tuesday Evening | S 10 - 20 | SE 15 - 25 | S 10 - 20 | S 10 - 20 | S 15 - 25 |
| Tuesday Night | SSE 10 - 20 | SE 15 - 25 | SE 10 - 20 | S 10 - 20 | SW 15 - 25 |
| Wednesday Morning | SE 10 - 20 | SE 20 - 30 | SE 15 - 25 | S 10 - 20 | SW 20 - 30 |
| Wednesday Afternoon | SE 10 - 20 | S 15 - 25 | SSW 15 - 25 | SW 15 - 25 | SW 20 - 30 |
| Mt. Baker | Direction - Speed |
|---|---|
| Tuesday Evening | S 10 - 20 |
| Tuesday Night | SSE 10 - 20 |
| Wednesday Morning | SE 10 - 20 |
| Wednesday Afternoon | SE 10 - 20 |
| Washington Pass | Direction - Speed |
|---|---|
| Tuesday Evening | SE 15 - 25 |
| Tuesday Night | SE 15 - 25 |
| Wednesday Morning | SE 20 - 30 |
| Wednesday Afternoon | S 15 - 25 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Tuesday Evening | S 10 - 20 |
| Tuesday Night | SE 10 - 20 |
| Wednesday Morning | SE 15 - 25 |
| Wednesday Afternoon | SSW 15 - 25 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Tuesday Evening | S 10 - 20 |
| Tuesday Night | S 10 - 20 |
| Wednesday Morning | S 10 - 20 |
| Wednesday Afternoon | SW 15 - 25 |
| Mt. Hood | Direction - Speed |
|---|---|
| Tuesday Evening | S 15 - 25 |
| Tuesday Night | SW 15 - 25 |
| Wednesday Morning | SW 20 - 30 |
| Wednesday Afternoon | SW 20 - 30 |
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: 3:17 PM PST Tuesday, March 5, 2019
Extended Weather Synopsis for Sunday night through Sunday
As the low moves inland on Friday, the Pacific Northwest will be on the backside of the upper level trough with onshore flow at the surface. This should translate to plenty of leftover clouds and scattered snow showers for the west slopes of the Cascades and Olympics and somewhat clearer skies further east of the Cascade crest. Saturday looks slightly warmer with isolated afternoon mountain showers as upper level ridge builds upstream of our area over B.C.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Thursday Night | Snow Level | 0' - 500' | 0' - 500' | 0' - 500' | |
| Friday | Snow Level | 500' - 1500' | 500' - 1500' | 1000' - 2000' | |
| Friday Night | Snow Level | 0' - 1000' | 0' - 1000' | 0' - 1000' | |
| Saturday | Snow Level | 1500' - 2500' | 1500' - 2500' | 1500' - 2500' |
| Mt. Baker | Elevation |
|---|---|
| Thursday Night |
Snow Level 0' - 500' |
| Friday |
Snow Level 500' - 1500' |
| Friday Night |
Snow Level 0' - 1000' |
| Saturday |
Snow Level 1500' - 2500' |
| Snoqualmie Pass | Elevation |
|---|---|
| Thursday Night |
Snow Level 0' - 500' |
| Friday |
Snow Level 500' - 1500' |
| Friday Night |
Snow Level 0' - 1000' |
| Saturday |
Snow Level 1500' - 2500' |
| Mt. Hood | Elevation |
|---|---|
| Thursday Night |
Snow Level 0' - 500' |
| Friday |
Snow Level 1000' - 2000' |
| Friday Night |
Snow Level 0' - 1000' |
| Saturday |
Snow Level 1500' - 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.
Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Previous forecast from Mar 5, 2019
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