Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Weather Synopsis for Saturday night through Monday
The Pacific Northwest sits under weak S flow aloft on Saturday with a trough embedded in a large ridge dominates dominating western Canada. The ridge is causing incoming storms to fizzle and split. Slight instability associated with the trough offshore will produce Isolated and light rain and snow shower activity into the evening hours on Saturday, particularly in the southern Washington Cascades and Olympics.
Most models continue to have a very weak low-pressure center develop east of the Cascades as the embedded weak trough moves onshore. A weakly organized band of clouds and very light rain or snow is expected to lift NE, potentially bringing less than 0.10" of snow water equivalent to parts of the Cascades east slopes and the North Cascades. Meanwhile, Mt. Hood and the Olympics should experience mostly clear weather with temperatures warming relative to Saturday. Sunday night, subtle ridging should enable skies to clear in most areas except possibly the North Cascades where clouds and very light rain or snow flurries may linger.
Temperatures will be mostly diurnally influenced with a gradual increase until Monday morning.
A front associated with a closed low offshore will eject NE on Monday, bringing a rain band into our region on Monday afternoon with mostly light to occasionally moderate rain, high elevation snow, and moderate SE shifting to SW winds, and cooling temperatures.
Weather Forecast
Hurricane Ridge
| Saturday Night | Decreasing clouds early, becoming partly clear. Mild. Light winds. |
| Sunday | Partly sunny. Mild. Light winds. |
Mt. Baker
| Saturday Night | Partly cloudy. Mild. Light winds. |
| Sunday | Partly cloudy with increasing clouds and a chance of light rain or snow late in the day. Mild. Light winds. |
Washington Pass and Leavenworth
| Saturday Night | Increasing clouds with a chance of very light rain or snow after midnight. Mild. Light winds. |
| Sunday | Mostly cloudy with a chance of light rain or snow. Mild. Light winds. |
Stevens and Snoqualmie Pass
| Saturday Night | Increasing clouds after midnight with a slight chance of very light rain or snow. Mild. Light W wind at pass level and at 5000 ft. |
| Sunday | Mostly cloudy with a slight chance of very light rain or snow. Mild. Light W wind at pass level and at 5000 ft. |
Mt. Rainier, Crystal and White Pass
| Saturday Night | Decreasing light convective showers in the evening, then very light rain or snow possible after midnight. Mild. Light winds. |
| Sunday | Cloud cover lingering into the afternoon hours, then gradually clearing. Mild. Light winds. |
Mt. Hood
| Saturday Night | Mostly cloudy with a chance of a very light rain or snow shower. Mild. Light winds. |
| Sunday | Clouds giving way to sunshine. Mild. Light winds. |
Issued: 2:44 PM PDT Saturday, March 23, 2019
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Saturday Evening | Freezing Level | 5000' | 6000' | 6500' | 6500' | 6000' | 6000' | 6000' | 5500' |
| Saturday Night | Freezing Level | 5000' | 5500' | 5500' | 6000' | 5500' | 5000' | 5000' | 5000' |
| Sunday Morning | Freezing Level | 5000' | 5000' | 5000' | 5500' | 4500' | 4500' | 4500' | 4500' |
| Sunday Afternoon | Freezing Level | 5000' | 5000' | 5500' | 5500' | 5000' | 5000' | 5000' | 5500' |
| Sunday Evening | Freezing Level | 5500' | 5000' | 5500' | 5500' | 5500' | 5500' | 5500' | 6500' |
| Sunday Night | Freezing Level * | 5500' | 4500' | 5000' | 5500' | 5000' | 5500' | 5000' | 7000' |
| Monday Morning | Snow Level * | 5000' | 4000' | 4000' | 4500' | 4500' | 5000' | 5000' | 5500' |
| Monday Afternoon | Snow Level * | 5000' | 5500' | 5000' | 4500' | 5000' | 5000' | 5000' | 4500' |
| Hurricane Ridge | Elevation |
|---|---|
| Saturday Evening |
Freezing Level 5000' |
| Saturday Night |
Freezing Level 5000' |
| Sunday Morning |
Freezing Level 5000' |
| Sunday Afternoon |
Freezing Level 5000' |
| Sunday Evening |
Freezing Level 5500' |
| Sunday Night |
Freezing Level 5500' (Easterly Flow *) |
| Monday Morning |
Snow Level 5000' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 5000' (Easterly Flow *) |
| Mt. Baker | Elevation |
|---|---|
| Saturday Evening |
Freezing Level 6000' |
| Saturday Night |
Freezing Level 5500' |
| Sunday Morning |
Freezing Level 5000' |
| Sunday Afternoon |
Freezing Level 5000' |
| Sunday Evening |
Freezing Level 5000' |
| Sunday Night |
Freezing Level 4500' (Easterly Flow *) |
| Monday Morning |
Snow Level 4000' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 5500' (Easterly Flow *) |
| Washington Pass | Elevation |
|---|---|
| Saturday Evening |
Freezing Level 6500' |
| Saturday Night |
Freezing Level 5500' |
| Sunday Morning |
Freezing Level 5000' |
| Sunday Afternoon |
Freezing Level 5500' |
| Sunday Evening |
Freezing Level 5500' |
| Sunday Night |
Freezing Level 5000' (Easterly Flow *) |
| Monday Morning |
Snow Level 4000' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 5000' (Easterly Flow *) |
| Leavenworth | Elevation |
|---|---|
| Saturday Evening |
Freezing Level 6500' |
| Saturday Night |
Freezing Level 6000' |
| Sunday Morning |
Freezing Level 5500' |
| Sunday Afternoon |
Freezing Level 5500' |
| Sunday Evening |
Freezing Level 5500' |
| Sunday Night |
Freezing Level 5500' (Easterly Flow *) |
| Monday Morning |
Snow Level 4500' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 4500' (Easterly Flow *) |
| Stevens Pass | Elevation |
|---|---|
| Saturday Evening |
Freezing Level 6000' |
| Saturday Night |
Freezing Level 5500' |
| Sunday Morning |
Freezing Level 4500' |
| Sunday Afternoon |
Freezing Level 5000' |
| Sunday Evening |
Freezing Level 5500' |
| Sunday Night |
Freezing Level 5000' (Easterly Flow *) |
| Monday Morning |
Snow Level 4500' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 5000' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Saturday Evening |
Freezing Level 6000' |
| Saturday Night |
Freezing Level 5000' |
| Sunday Morning |
Freezing Level 4500' |
| Sunday Afternoon |
Freezing Level 5000' |
| Sunday Evening |
Freezing Level 5500' |
| Sunday Night |
Freezing Level 5500' (Easterly Flow *) |
| Monday Morning |
Snow Level 5000' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 5000' (Easterly Flow *) |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Saturday Evening |
Freezing Level 6000' |
| Saturday Night |
Freezing Level 5000' |
| Sunday Morning |
Freezing Level 4500' |
| Sunday Afternoon |
Freezing Level 5000' |
| Sunday Evening |
Freezing Level 5500' |
| Sunday Night |
Freezing Level 5000' (Easterly Flow *) |
| Monday Morning |
Snow Level 5000' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 5000' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Saturday Evening |
Freezing Level 5500' |
| Saturday Night |
Freezing Level 5000' |
| Sunday Morning |
Freezing Level 4500' |
| Sunday Afternoon |
Freezing Level 5500' |
| Sunday Evening |
Freezing Level 6500' |
| Sunday Night |
Freezing Level 7000' (Easterly Flow *) |
| Monday Morning |
Snow Level 5500' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 4500' (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
| Saturday Night | Monday | Monday Night | Monday | |
|---|---|---|---|---|
| 4 pm - 4 am | 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | LT 0.10 | 0 | 0 | LT 0.25 |
| Mt Baker Ski Area | 0 | 0 | 0 | 0.25 |
| Washington Pass | 0 | LT 0.10 | LT 0.10 | LT 0.10 |
| Leavenworth | 0 | 0 | 0 | LT 0.10 |
| Stevens Pass | 0 | 0 | 0 | LT 0.25 |
| Snoqualmie Pass | 0 | 0 | 0 | LT 0.25 |
| Mission Ridge | 0 | LT 0.10 | 0 | LT 0.25 |
| Crystal Mt | 0 | 0 | 0 | LT 0.25 |
| Paradise | LT 0.10 | 0 | 0 | 0.25 |
| White Pass | LT 0.10 | 0 | 0 | LT 0.25 |
| Mt Hood Meadows | 0 | 0 | 0 | 0.25 |
| Timberline | 0 | 0 | 0 | 0.25 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Saturday Night | LT 0.10 |
| Monday | 0 |
| Monday Night | 0 |
| Monday | LT 0.25 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Saturday Night | 0 |
| Monday | 0 |
| Monday Night | 0 |
| Monday | 0.25 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Saturday Night | 0 |
| Monday | LT 0.10 |
| Monday Night | LT 0.10 |
| Monday | LT 0.10 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Saturday Night | 0 |
| Monday | 0 |
| Monday Night | 0 |
| Monday | LT 0.10 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Saturday Night | 0 |
| Monday | 0 |
| Monday Night | 0 |
| Monday | LT 0.25 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Saturday Night | 0 |
| Monday | 0 |
| Monday Night | 0 |
| Monday | LT 0.25 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Saturday Night | 0 |
| Monday | LT 0.10 |
| Monday Night | 0 |
| Monday | LT 0.25 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Saturday Night | 0 |
| Monday | 0 |
| Monday Night | 0 |
| Monday | LT 0.25 |
| Paradise | Precipitation Forecast |
|---|---|
| Saturday Night | LT 0.10 |
| Monday | 0 |
| Monday Night | 0 |
| Monday | 0.25 |
| White Pass | Precipitation Forecast |
|---|---|
| Saturday Night | LT 0.10 |
| Monday | 0 |
| Monday Night | 0 |
| Monday | LT 0.25 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Saturday Night | 0 |
| Monday | 0 |
| Monday Night | 0 |
| Monday | 0.25 |
| Timberline | Precipitation Forecast |
|---|---|
| Saturday Night | 0 |
| Monday | 0 |
| Monday Night | 0 |
| Monday | 0.25 |
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: 2:44 PM PDT Saturday, March 23, 2019
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Saturday Evening | VAR 0 - 10 | W 0 - 10 | W 5 - 15 | W 5 - 15 | W 10 - 20 |
| Saturday Night | VAR 0 - 10 | VAR 0 - 10 | W 5 - 15 | W 5 - 15 | W 10 - 20 |
| Sunday Morning | VAR 0 - 10 | W 5 - 15 | W 5 - 15 | W 5 - 15 | WSW 5 - 15 |
| Sunday Afternoon | VAR 0 - 10 | WSW 0 - 10 | W 5 - 15 | WSW 5 - 15 | SW 5 - 15 |
| Hurricane Ridge | Elevation |
|---|---|
| Saturday Evening | VAR 0 - 10 |
| Saturday Night | VAR 0 - 10 |
| Sunday Morning | VAR 0 - 10 |
| Sunday Afternoon | VAR 0 - 10 |
| Mt. Baker | Elevation |
|---|---|
| Saturday Evening | W 0 - 10 |
| Saturday Night | VAR 0 - 10 |
| Sunday Morning | W 5 - 15 |
| Sunday Afternoon | WSW 0 - 10 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Saturday Evening | W 5 - 15 |
| Saturday Night | W 5 - 15 |
| Sunday Morning | W 5 - 15 |
| Sunday Afternoon | W 5 - 15 |
| Mt. Rainier | Elevation |
|---|---|
| Saturday Evening | W 5 - 15 |
| Saturday Night | W 5 - 15 |
| Sunday Morning | W 5 - 15 |
| Sunday Afternoon | WSW 5 - 15 |
| Mt. Hood | Elevation |
|---|---|
| Saturday Evening | W 10 - 20 |
| Saturday Night | W 10 - 20 |
| Sunday Morning | WSW 5 - 15 |
| Sunday Afternoon | SW 5 - 15 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Saturday Evening | VAR 0 - 10 |
| Saturday Night | VAR 0 - 10 |
| Sunday Morning | VAR 0 - 10 |
| Sunday Afternoon | VAR 0 - 10 |
| Mt. Baker | Direction - Speed |
|---|---|
| Saturday Evening | W 0 - 10 |
| Saturday Night | VAR 0 - 10 |
| Sunday Morning | W 5 - 15 |
| Sunday Afternoon | WSW 0 - 10 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Saturday Evening | W 5 - 15 |
| Saturday Night | W 5 - 15 |
| Sunday Morning | W 5 - 15 |
| Sunday Afternoon | W 5 - 15 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Saturday Evening | W 5 - 15 |
| Saturday Night | W 5 - 15 |
| Sunday Morning | W 5 - 15 |
| Sunday Afternoon | WSW 5 - 15 |
| Mt. Hood | Direction - Speed |
|---|---|
| Saturday Evening | W 10 - 20 |
| Saturday Night | W 10 - 20 |
| Sunday Morning | WSW 5 - 15 |
| Sunday Afternoon | SW 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.
Free Winds at 9000' (mph)
| Mt. Baker | Washington Pass | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Saturday Evening | SSE 5 - 15 | ESE 5 - 15 | VAR 0 - 10 | NW 5 - 15 | W 5 - 15 |
| Saturday Night | VAR 0 - 10 | N 5 - 15 | WNW 5 - 15 | NW 5 - 15 | W 5 - 15 |
| Sunday Morning | ENE 5 - 15 | E 5 - 15 | VAR 0 - 10 | SW 5 - 15 | SW 5 - 15 |
| Sunday Afternoon | ESE 0 - 10 | SSE 0 - 10 | SW 5 - 15 | SSW 5 - 15 | SSW 10 - 20 |
| Mt. Baker | Direction - Speed |
|---|---|
| Saturday Evening | SSE 5 - 15 |
| Saturday Night | VAR 0 - 10 |
| Sunday Morning | ENE 5 - 15 |
| Sunday Afternoon | ESE 0 - 10 |
| Washington Pass | Direction - Speed |
|---|---|
| Saturday Evening | ESE 5 - 15 |
| Saturday Night | N 5 - 15 |
| Sunday Morning | E 5 - 15 |
| Sunday Afternoon | SSE 0 - 10 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Saturday Evening | VAR 0 - 10 |
| Saturday Night | WNW 5 - 15 |
| Sunday Morning | VAR 0 - 10 |
| Sunday Afternoon | SW 5 - 15 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Saturday Evening | NW 5 - 15 |
| Saturday Night | NW 5 - 15 |
| Sunday Morning | SW 5 - 15 |
| Sunday Afternoon | SSW 5 - 15 |
| Mt. Hood | Direction - Speed |
|---|---|
| Saturday Evening | W 5 - 15 |
| Saturday Night | W 5 - 15 |
| Sunday Morning | SW 5 - 15 |
| Sunday 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.
Issued: 2:44 PM PDT Saturday, March 23, 2019
Extended Weather Synopsis for Monday night through Monday
SW flow will bring light post-frontal snow showers to some areas with snow levels lowering toward pass level. The Mt. Baker area is favored for snow accumulation. Tuesday might bring some continued light post-frontal snow showers in some areas, but the main energy of the closed low will be heading for California. With cool temperatures in place, expect snow shower activity to increase in the afternoon. By late Wednesday, the closed low may bring some moisture into our region or we may dry out.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Monday Night | Snow Level | 3000' - 5000' | 3000' - 4000' | 2500' - 4500' | |
| Tuesday | Snow Level | 2000' - 3000' | 2000' - 3000' | 2000' - 3000' | |
| Tuesday Night | Snow Level | 2000' - 3000' | 2500' - 3500' | 2500' - 4500' | |
| Wednesday | Snow Level | 2500' - 3500' | 2000' - 4000' | 2500' - 4500' |
| Mt. Baker | Elevation |
|---|---|
| Monday Night |
Snow Level 3000' - 5000' |
| Tuesday |
Snow Level 2000' - 3000' |
| Tuesday Night |
Snow Level 2000' - 3000' |
| Wednesday |
Snow Level 2500' - 3500' |
| Snoqualmie Pass | Elevation |
|---|---|
| Monday Night |
Snow Level 3000' - 4000' |
| Tuesday |
Snow Level 2000' - 3000' |
| Tuesday Night |
Snow Level 2500' - 3500' |
| Wednesday |
Snow Level 2000' - 4000' |
| Mt. Hood | Elevation |
|---|---|
| Monday Night |
Snow Level 2500' - 4500' |
| Tuesday |
Snow Level 2000' - 3000' |
| Tuesday Night |
Snow Level 2500' - 4500' |
| Wednesday |
Snow Level 2500' - 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.
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 23, 2019
The NWAC program is administered by the USDA-Forest Service and operates from the National Weather Service Forecast Office in Seattle. NWAC services are made possible by important collaboration and support from a wide variety of federal, state and private cooperators.