Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Weather Synopsis for Sunday & Monday
A low pressure spinning off the coast of northern California continues to spin very small amounts of moisture into the southern parts of the forecast region (from around I-90 southward). We're expecting up to an inch of snow accumulation with these bands of very light showers. The clockwise (cyclonic) circulation around the low combined with a difference in temperature across the Cascades continues to drive moderate to strong E flow at Cascade Crest level in the southern Cascades. Regions north of I-90 should see slightly below average temperatures for mid-March, but mostly sunny skies. Fraser outflow winds continue to spill cold air into the lowlands, but should gradually decrease Sunday through Monday.
Sunday night, temperatures should be cool with the easterly winds gradually waning. A ridge of high pressure dries out the region with only a few clouds lingering near Mt. Hood.
Monday, the temperatures moderate significantly with sunny skies and temperatures rebounding by late morning to typical temperatures for mid-March. Winds should be generally light.
Weather Forecast
Hurricane Ridge
| Sunday | Sunny. |
Mt. Baker
| Sunday | Sunny. |
Washington Pass and Leavenworth
| Sunday | Sunny in the north. Partly cloudy with a chance of flurries in the south. |
Stevens and Snoqualmie Pass
| Sunday | Partly cloudy with a chance of showers. E winds 10-20 mph through the passes. |
Mt. Rainier, Crystal and White Pass
| Sunday | Partly cloudy with occasional snow showers. |
Mt. Hood
| Sunday | Partly cloudy with occasional snow showers. |
Issued: 7:08 AM PDT Sunday, March 15, 2020
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 * | 2000' | 1000' | 1000' | 1500' | 2000' | 1500' | 1500' | 500' |
| Sunday Afternoon | Freezing Level * | 3000' | 2000' | 2500' | 2500' | 3000' | 3000' | 3000' | 1000' |
| Sunday Evening | Freezing Level * | 3000' | 3000' | 3500' | 2500' | 3000' | 3500' | 3000' | 1000' |
| Sunday Night | Freezing Level * | 3500' | 2000' | 2000' | 1500' | 2000' | 2000' | 2000' | 500' |
| Monday Morning | Freezing Level * | 6000' | 6000' | 4500' | 5000' | 5500' | 6000' | 6000' | 4500' |
| Monday Afternoon | Freezing Level * | 7000' | 6500' | 5500' | 4500' | 6000' | 6500' | 6000' | 4000' |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Morning |
Freezing Level 2000' (Easterly Flow *) |
| Sunday Afternoon |
Freezing Level 3000' (Easterly Flow *) |
| Sunday Evening |
Freezing Level 3000' (Easterly Flow *) |
| Sunday Night |
Freezing Level 3500' (Easterly Flow *) |
| Monday Morning |
Freezing Level 6000' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level 7000' (Easterly Flow *) |
| Mt. Baker | Elevation |
|---|---|
| Sunday Morning |
Freezing Level 1000' (Easterly Flow *) |
| Sunday Afternoon |
Freezing Level 2000' (Easterly Flow *) |
| Sunday Evening |
Freezing Level 3000' (Easterly Flow *) |
| Sunday Night |
Freezing Level 2000' (Easterly Flow *) |
| Monday Morning |
Freezing Level 6000' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level 6500' (Easterly Flow *) |
| Washington Pass | Elevation |
|---|---|
| Sunday Morning |
Freezing Level 1000' (Easterly Flow *) |
| Sunday Afternoon |
Freezing Level 2500' (Easterly Flow *) |
| Sunday Evening |
Freezing Level 3500' (Easterly Flow *) |
| Sunday Night |
Freezing Level 2000' (Easterly Flow *) |
| Monday Morning |
Freezing Level 4500' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level 5500' (Easterly Flow *) |
| Leavenworth | Elevation |
|---|---|
| Sunday Morning |
Freezing Level 1500' (Easterly Flow *) |
| Sunday Afternoon |
Freezing Level 2500' (Easterly Flow *) |
| Sunday Evening |
Freezing Level 2500' (Easterly Flow *) |
| Sunday Night |
Freezing Level 1500' (Easterly Flow *) |
| Monday Morning |
Freezing Level 5000' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level 4500' (Easterly Flow *) |
| Stevens Pass | Elevation |
|---|---|
| Sunday Morning |
Freezing Level 2000' (Easterly Flow *) |
| Sunday Afternoon |
Freezing Level 3000' (Easterly Flow *) |
| Sunday Evening |
Freezing Level 3000' (Easterly Flow *) |
| Sunday Night |
Freezing Level 2000' (Easterly Flow *) |
| Monday Morning |
Freezing Level 5500' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level 6000' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Sunday Morning |
Freezing Level 1500' (Easterly Flow *) |
| Sunday Afternoon |
Freezing Level 3000' (Easterly Flow *) |
| Sunday Evening |
Freezing Level 3500' (Easterly Flow *) |
| Sunday Night |
Freezing Level 2000' (Easterly Flow *) |
| Monday Morning |
Freezing Level 6000' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level 6500' (Easterly Flow *) |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Sunday Morning |
Freezing Level 1500' (Easterly Flow *) |
| Sunday Afternoon |
Freezing Level 3000' (Easterly Flow *) |
| Sunday Evening |
Freezing Level 3000' (Easterly Flow *) |
| Sunday Night |
Freezing Level 2000' (Easterly Flow *) |
| Monday Morning |
Freezing Level 6000' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level 6000' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Sunday Morning |
Freezing Level 500' (Easterly Flow *) |
| Sunday Afternoon |
Freezing Level 1000' (Easterly Flow *) |
| Sunday Evening |
Freezing Level 1000' (Easterly Flow *) |
| Sunday Night |
Freezing Level 500' (Easterly Flow *) |
| Monday Morning |
Freezing Level 4500' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level 4000' (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
| Sunday | Sunday Night | Monday | |
|---|---|---|---|
| 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | 0 | 0 | 0 |
| Mt Baker Ski Area | 0 | 0 | 0 |
| Washington Pass | 0 | 0 | 0 |
| Leavenworth | 0 | 0 | 0 |
| Stevens Pass | 0 | 0 | 0 |
| Snoqualmie Pass | 0 | 0 | 0 |
| Mission Ridge | LT 0.10 | 0 | 0 |
| Crystal Mt | LT 0.10 | 0 | 0 |
| Paradise | LT 0.10 | 0 | 0 |
| White Pass | LT 0.10 | 0 | 0 |
| Mt Hood Meadows | LT 0.10 | LT 0.10 | 0 |
| Timberline | LT 0.10 | LT 0.10 | 0 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Sunday | 0 |
| Sunday Night | 0 |
| Monday | 0 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Sunday | 0 |
| Sunday Night | 0 |
| Monday | 0 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Sunday | 0 |
| Sunday Night | 0 |
| Monday | 0 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Sunday | 0 |
| Sunday Night | 0 |
| Monday | 0 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Sunday | 0 |
| Sunday Night | 0 |
| Monday | 0 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Sunday | 0 |
| Sunday Night | 0 |
| Monday | 0 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Sunday | LT 0.10 |
| Sunday Night | 0 |
| Monday | 0 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Sunday | LT 0.10 |
| Sunday Night | 0 |
| Monday | 0 |
| Paradise | Precipitation Forecast |
|---|---|
| Sunday | LT 0.10 |
| Sunday Night | 0 |
| Monday | 0 |
| White Pass | Precipitation Forecast |
|---|---|
| Sunday | LT 0.10 |
| Sunday Night | 0 |
| Monday | 0 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Sunday | LT 0.10 |
| Sunday Night | LT 0.10 |
| Monday | 0 |
| Timberline | Precipitation Forecast |
|---|---|
| Sunday | LT 0.10 |
| Sunday Night | LT 0.10 |
| Monday | 0 |
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: 7:08 AM PDT Sunday, March 15, 2020
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Sunday Morning | ENE 10 - 20 | ENE 5 - 15 | ENE 10 - 20 | ESE 10 - 20 | ENE 15 - 25 |
| Sunday Afternoon | ENE 5 - 15 | ENE 5 - 15 | E 10 - 20 | E 5 - 15 | E 10 - 20 |
| Sunday Evening | NE 5 - 15 | ENE 5 - 15 | E 10 - 20 | E 10 - 20 | E 20 - 30 |
| Sunday Night | ENE 5 - 15 | ENE 5 - 15 | E 10 - 20 | E 10 - 20 | E 15 - 25 |
| Monday Morning | NE 5 - 15 | E 5 - 15 | E 5 - 15 | ENE 5 - 15 | E 15 - 25 |
| Monday Afternoon | NNW 0 - 10 | E 0 - 10 | E 0 - 10 | ENE 0 - 10 | E 10 - 20 |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Morning | ENE 10 - 20 |
| Sunday Afternoon | ENE 5 - 15 |
| Sunday Evening | NE 5 - 15 |
| Sunday Night | ENE 5 - 15 |
| Monday Morning | NE 5 - 15 |
| Monday Afternoon | NNW 0 - 10 |
| Mt. Baker | Elevation |
|---|---|
| Sunday Morning | ENE 5 - 15 |
| Sunday Afternoon | ENE 5 - 15 |
| Sunday Evening | ENE 5 - 15 |
| Sunday Night | ENE 5 - 15 |
| Monday Morning | E 5 - 15 |
| Monday Afternoon | E 0 - 10 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Sunday Morning | ENE 10 - 20 |
| Sunday Afternoon | E 10 - 20 |
| Sunday Evening | E 10 - 20 |
| Sunday Night | E 10 - 20 |
| Monday Morning | E 5 - 15 |
| Monday Afternoon | E 0 - 10 |
| Mt. Rainier | Elevation |
|---|---|
| Sunday Morning | ESE 10 - 20 |
| Sunday Afternoon | E 5 - 15 |
| Sunday Evening | E 10 - 20 |
| Sunday Night | E 10 - 20 |
| Monday Morning | ENE 5 - 15 |
| Monday Afternoon | ENE 0 - 10 |
| Mt. Hood | Elevation |
|---|---|
| Sunday Morning | ENE 15 - 25 |
| Sunday Afternoon | E 10 - 20 |
| Sunday Evening | E 20 - 30 |
| Sunday Night | E 15 - 25 |
| Monday Morning | E 15 - 25 |
| Monday Afternoon | E 10 - 20 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Sunday Morning | ENE 10 - 20 |
| Sunday Afternoon | ENE 5 - 15 |
| Sunday Evening | NE 5 - 15 |
| Sunday Night | ENE 5 - 15 |
| Monday Morning | NE 5 - 15 |
| Monday Afternoon | NNW 0 - 10 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Morning | ENE 5 - 15 |
| Sunday Afternoon | ENE 5 - 15 |
| Sunday Evening | ENE 5 - 15 |
| Sunday Night | ENE 5 - 15 |
| Monday Morning | E 5 - 15 |
| Monday Afternoon | E 0 - 10 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Morning | ENE 10 - 20 |
| Sunday Afternoon | E 10 - 20 |
| Sunday Evening | E 10 - 20 |
| Sunday Night | E 10 - 20 |
| Monday Morning | E 5 - 15 |
| Monday Afternoon | E 0 - 10 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Morning | ESE 10 - 20 |
| Sunday Afternoon | E 5 - 15 |
| Sunday Evening | E 10 - 20 |
| Sunday Night | E 10 - 20 |
| Monday Morning | ENE 5 - 15 |
| Monday Afternoon | ENE 0 - 10 |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Morning | ENE 15 - 25 |
| Sunday Afternoon | E 10 - 20 |
| Sunday Evening | E 20 - 30 |
| Sunday Night | E 15 - 25 |
| Monday Morning | E 15 - 25 |
| Monday Afternoon | E 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 Morning | E 15 - 25 | E 25 - 35 | E 25 - 35 | E 25 - 35 | E 15 - 25 |
| Sunday Afternoon | E 15 - 25 | E 20 - 30 | E 25 - 35 | E 25 - 35 | SE 15 - 25 |
| Sunday Evening | E 10 - 20 | E 15 - 25 | E 35 - 45 | E 30 - 40 | SE 15 - 25 |
| Sunday Night | VAR 0 - 10 | VAR 0 - 10 | E 15 - 25 | ESE 15 - 25 | ENE 15 - 25 |
| Monday Morning | NE 5 - 15 | NNE 5 - 15 | ENE 10 - 20 | E 10 - 20 | E 40 - 50 |
| Monday Afternoon | ENE 5 - 15 | NNW 5 - 15 | E 5 - 15 | E 10 - 20 | E 25 - 35 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Morning | E 15 - 25 |
| Sunday Afternoon | E 15 - 25 |
| Sunday Evening | E 10 - 20 |
| Sunday Night | VAR 0 - 10 |
| Monday Morning | NE 5 - 15 |
| Monday Afternoon | ENE 5 - 15 |
| Washington Pass | Direction - Speed |
|---|---|
| Sunday Morning | E 25 - 35 |
| Sunday Afternoon | E 20 - 30 |
| Sunday Evening | E 15 - 25 |
| Sunday Night | VAR 0 - 10 |
| Monday Morning | NNE 5 - 15 |
| Monday Afternoon | NNW 5 - 15 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Morning | E 25 - 35 |
| Sunday Afternoon | E 25 - 35 |
| Sunday Evening | E 35 - 45 |
| Sunday Night | E 15 - 25 |
| Monday Morning | ENE 10 - 20 |
| Monday Afternoon | E 5 - 15 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Morning | E 25 - 35 |
| Sunday Afternoon | E 25 - 35 |
| Sunday Evening | E 30 - 40 |
| Sunday Night | ESE 15 - 25 |
| Monday Morning | E 10 - 20 |
| Monday Afternoon | E 10 - 20 |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Morning | E 15 - 25 |
| Sunday Afternoon | SE 15 - 25 |
| Sunday Evening | SE 15 - 25 |
| Sunday Night | ENE 15 - 25 |
| Monday Morning | E 40 - 50 |
| Monday Afternoon | E 25 - 35 |
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 14, 2020
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