Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Weather Synopsis for Sunday & Friday
A mid-level deck associated with a weak upper trough has spread some clouds from the Olympics to the southwest Cascades early this morning. Any cloud cover will break up quickly and mostly sunny and warm conditions are expected for the mountains today as upper level ridging rebuilds along the West Coast.
The ridge axis will shift inland on Monday as a weak N-S oriented front approaches 130W Monday. We will enjoy another warm and sunny day, but offshore flow gradients will increase during the day with breezy E-SE winds developing especially in the Passes and from Snoquamlie Pass and south to Mt. Hood. Freezing levels should be coolest in the NE Cascades and Stevens Pass area, topping out around 7000 feet, with freezing levels 8000-9000 feet elsewhere.
The weak frontal system will approach the coast Monday night, with light precipitation rotating up from the south and perhaps reaching Mt. Hood before daybreak early Tuesday morning. E-SE winds will increase further Monday night.
Weather Forecast
Olympics
| Sunday | Mostly cloudy this morning, otherwise mostly sunny and warm today. |
| Sunday Night | Mostly clear. |
| Monday | Mostly sunny and warm. |
| Monday Night | Becoming cloudy overnight. |
Washington Cascades near and west of the Crest including Stevens, Snoqualmie and White Passes
| Sunday | Partly to mostly cloudy south and central Cascades this morning, otherwise mostly sunny and warm today. |
| Sunday Night | Mostly clear. |
| Monday | Mostly sunny and warm. Breezy E-SE winds Passes and Cascade crest level from Snoqualmie Pass and south. |
| Monday Night | Becoming cloudy overnight. Moderate E-SE winds Passes and Cascade crest level from Snoqualmie Pass and south. |
East Slopes of the Washington Cascades
| Sunday | Mostly cloudy southeast Cascades this morning, otherwise mostly sunny and warm today. |
| Sunday Night | Mostly clear. |
| Monday | Mostly sunny and warm. Breezy E-SE winds Cascade crest level from Snoqualmie Pass and south. |
| Monday Night | Becoming mostly cloudy overnight. Moderate E-SE winds Cascade crest level from Snoqualmie Pass and south. |
Mt. Hood
| Sunday | Mostly sunny and warm. |
| Sunday Night | Mostly clear. |
| Monday | Mostly sunny and warm. Breezy E-SE winds. |
| Monday Night | Becoming cloudy overnight with a chance of light rain after midnight. Moderate S-SE winds. |
Issued: 7:23 AM PDT Sunday, March 11, 2018
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Sunday Morning | Freezing Level * | 6000' | 5500' | 1000' | ' | ' | 3000' | ' | 5500' |
| Sunday Afternoon | Freezing Level * | 7000' | 7000' | 6500' | ' | ' | 7000' | ' | 8000' |
| Sunday Night | Freezing Level * | 8000' | 7000' | 3000' | ' | ' | 6000' | ' | 8000' |
| Monday Morning | Freezing Level * | 8000' | 7000' | 3000' | ' | ' | 6000' | ' | 8000' |
| Monday Afternoon | Freezing Level * | 9000' | 8500' | 7000' | ' | ' | 8500' | ' | 9000' |
| Monday Night | Freezing Level * | 9000' | 8000' | 5000' | ' | ' | 7500' | ' | 9000' |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Morning |
Freezing Level 6000' (Easterly Flow *) |
| Sunday Afternoon |
Freezing Level 7000' (Easterly Flow *) |
| Sunday Night |
Freezing Level 8000' (Easterly Flow *) |
| Monday Morning |
Freezing Level 8000' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level 9000' (Easterly Flow *) |
| Monday Night |
Freezing Level 9000' (Easterly Flow *) |
| Mt. Baker | Elevation |
|---|---|
| Sunday Morning |
Freezing Level 5500' (Easterly Flow *) |
| Sunday Afternoon |
Freezing Level 7000' (Easterly Flow *) |
| Sunday Night |
Freezing Level 7000' (Easterly Flow *) |
| Monday Morning |
Freezing Level 7000' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level 8500' (Easterly Flow *) |
| Monday Night |
Freezing Level 8000' (Easterly Flow *) |
| Washington Pass | Elevation |
|---|---|
| Sunday Morning |
Freezing Level 1000' (Easterly Flow *) |
| Sunday Afternoon |
Freezing Level 6500' (Easterly Flow *) |
| Sunday Night |
Freezing Level 3000' (Easterly Flow *) |
| Monday Morning |
Freezing Level 3000' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level 7000' (Easterly Flow *) |
| Monday Night |
Freezing Level 5000' (Easterly Flow *) |
| Leavenworth | Elevation |
|---|---|
| Sunday Morning |
Freezing Level ' (Easterly Flow *) |
| Sunday Afternoon |
Freezing Level ' (Easterly Flow *) |
| Sunday Night |
Freezing Level ' (Easterly Flow *) |
| Monday Morning |
Freezing Level ' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level ' (Easterly Flow *) |
| Monday Night |
Freezing Level ' (Easterly Flow *) |
| Stevens Pass | Elevation |
|---|---|
| Sunday Morning |
Freezing Level ' (Easterly Flow *) |
| Sunday Afternoon |
Freezing Level ' (Easterly Flow *) |
| Sunday Night |
Freezing Level ' (Easterly Flow *) |
| Monday Morning |
Freezing Level ' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level ' (Easterly Flow *) |
| Monday Night |
Freezing Level ' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Sunday Morning |
Freezing Level 3000' (Easterly Flow *) |
| Sunday Afternoon |
Freezing Level 7000' (Easterly Flow *) |
| Sunday Night |
Freezing Level 6000' (Easterly Flow *) |
| Monday Morning |
Freezing Level 6000' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level 8500' (Easterly Flow *) |
| Monday Night |
Freezing Level 7500' (Easterly Flow *) |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Sunday Morning |
Freezing Level ' (Easterly Flow *) |
| Sunday Afternoon |
Freezing Level ' (Easterly Flow *) |
| Sunday Night |
Freezing Level ' (Easterly Flow *) |
| Monday Morning |
Freezing Level ' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level ' (Easterly Flow *) |
| Monday Night |
Freezing Level ' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Sunday Morning |
Freezing Level 5500' (Easterly Flow *) |
| Sunday Afternoon |
Freezing Level 8000' (Easterly Flow *) |
| Sunday Night |
Freezing Level 8000' (Easterly Flow *) |
| Monday Morning |
Freezing Level 8000' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level 9000' (Easterly Flow *) |
| Monday Night |
Freezing Level 9000' (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
| Friday | Friday | |
|---|---|---|
| Hurricane Ridge | LT 0.10 | LT 0.10 |
| Mt Baker Ski Area | LT 0.10 | LT 0.10 |
| Washington Pass | LT 0.10 | LT 0.10 |
| Stevens Pass | LT 0.10 | LT 0.10 |
| Snoqualmie Pass | LT 0.10 | LT 0.10 |
| Mission Ridge | LT 0.10 | LT 0.10 |
| Crystal Mt | LT 0.10 | LT 0.10 |
| Paradise | LT 0.10 | LT 0.10 |
| White Pass | LT 0.10 | LT 0.10 |
| Mt Hood Meadows | LT 0.10 | LT 0.10 |
| Timberline | LT 0.10 | 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: 7:23 AM PDT Sunday, March 11, 2018
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Sunday Morning | SE 0 - 10 | E 0 - 10 | ESE 5 - 15 | --- - | E 0 - 10 |
| Sunday Afternoon | SE 0 - 10 | SE 5 - 15 | ESE 5 - 15 | --- - | E 5 - 15 |
| Sunday Night | SE 5 - 15 | ESE 5 - 15 | ESE 10 - 20 | --- - | ESE 10 - 20 |
| Monday | SE 10 - 20 | ESE 10 - 20 | ESE 15 - 25 | --- - | ESE 15 - 25 |
| Monday Night | SE 15 - 25 | E 15 - 25 | ESE 20 - 35 | --- - | ESE 20 - 30 |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Morning | SE 0 - 10 |
| Sunday Afternoon | SE 0 - 10 |
| Sunday Night | SE 5 - 15 |
| Monday | SE 10 - 20 |
| Monday Night | SE 15 - 25 |
| Mt. Baker | Elevation |
|---|---|
| Sunday Morning | E 0 - 10 |
| Sunday Afternoon | SE 5 - 15 |
| Sunday Night | ESE 5 - 15 |
| Monday | ESE 10 - 20 |
| Monday Night | E 15 - 25 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Sunday Morning | ESE 5 - 15 |
| Sunday Afternoon | ESE 5 - 15 |
| Sunday Night | ESE 10 - 20 |
| Monday | ESE 15 - 25 |
| Monday Night | ESE 20 - 35 |
| Mt. Rainier | Elevation |
|---|---|
| Sunday Morning | --- - |
| Sunday Afternoon | --- - |
| Sunday Night | --- - |
| Monday | --- - |
| Monday Night | --- - |
| Mt. Hood | Elevation |
|---|---|
| Sunday Morning | E 0 - 10 |
| Sunday Afternoon | E 5 - 15 |
| Sunday Night | ESE 10 - 20 |
| Monday | ESE 15 - 25 |
| Monday Night | ESE 20 - 30 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Sunday Morning | SE 0 - 10 |
| Sunday Afternoon | SE 0 - 10 |
| Sunday Night | SE 5 - 15 |
| Monday | SE 10 - 20 |
| Monday Night | SE 15 - 25 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Morning | E 0 - 10 |
| Sunday Afternoon | SE 5 - 15 |
| Sunday Night | ESE 5 - 15 |
| Monday | ESE 10 - 20 |
| Monday Night | E 15 - 25 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Morning | ESE 5 - 15 |
| Sunday Afternoon | ESE 5 - 15 |
| Sunday Night | ESE 10 - 20 |
| Monday | ESE 15 - 25 |
| Monday Night | ESE 20 - 35 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Morning | --- - |
| Sunday Afternoon | --- - |
| Sunday Night | --- - |
| Monday | --- - |
| Monday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Morning | E 0 - 10 |
| Sunday Afternoon | E 5 - 15 |
| Sunday Night | ESE 10 - 20 |
| Monday | ESE 15 - 25 |
| Monday Night | ESE 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.
Free Winds at 9000' (mph)
| Mt. Baker | Washington Pass | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Sunday Morning | S 10 - 20 | S 5 - 15 | S 10 - 20 | --- - | SW 10 - 20 |
| Sunday Afternoon | S 5 - 15 | S 5 - 15 | S 5 - 15 | --- - | S 10 - 20 |
| Sunday Night | S 10 - 20 | S 5 - 15 | SSE 10 - 20 | --- - | SSE 10 - 20 |
| Monday Morning | SSE 10 - 20 | S 10 - 20 | SSE 10 - 20 | --- - | SSE 15 - 25 |
| Monday Afternoon | SE 10 - 20 | SSE 15 - 25 | SE 15 - 25 | --- - | SE 20 - 30 |
| Monday Night | S 20 - 30 | SSE 25 - 35 | SSE 35 - 45 | --- - | S 45 - 55 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Morning | S 10 - 20 |
| Sunday Afternoon | S 5 - 15 |
| Sunday Night | S 10 - 20 |
| Monday Morning | SSE 10 - 20 |
| Monday Afternoon | SE 10 - 20 |
| Monday Night | S 20 - 30 |
| Washington Pass | Direction - Speed |
|---|---|
| Sunday Morning | S 5 - 15 |
| Sunday Afternoon | S 5 - 15 |
| Sunday Night | S 5 - 15 |
| Monday Morning | S 10 - 20 |
| Monday Afternoon | SSE 15 - 25 |
| Monday Night | SSE 25 - 35 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Morning | S 10 - 20 |
| Sunday Afternoon | S 5 - 15 |
| Sunday Night | SSE 10 - 20 |
| Monday Morning | SSE 10 - 20 |
| Monday Afternoon | SE 15 - 25 |
| Monday Night | SSE 35 - 45 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Morning | --- - |
| Sunday Afternoon | --- - |
| Sunday Night | --- - |
| Monday Morning | --- - |
| Monday Afternoon | --- - |
| Monday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Morning | SW 10 - 20 |
| Sunday Afternoon | S 10 - 20 |
| Sunday Night | SSE 10 - 20 |
| Monday Morning | SSE 15 - 25 |
| Monday Afternoon | SE 20 - 30 |
| Monday Night | S 45 - 55 |
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.
Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Previous forecast from Mar 10, 2018
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