Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k
Weather Synopsis for Monday & Wednesday
A high-pressure wedge over the region on Monday morning will be pushed south as a sharp front approaches from the NW during the day on Monday. The front should bring a windy day to the mountains of NW Washington (particularly the North Cascades and Olympics) before spreading rain and snow to those same regions. Monday will be the warmest day our region has experienced in well over a month, but with reasonably dry air in place and cooling associated with the front, snow levels will rapidly lower as moisture arrives.
The frontal rain/snow band will spread across the mountains of Washington State, pushing rain and snow into the Mt. Hood area late in the night. Winds will generally peak in the moderate gusting strong range overnight with low-level winds switching from SSW to W with the frontal passage. Up to close to an inch of snow water equivalent is possible in areas favored by SSW flow, such as Paradise and Mt. Baker, but significant accumulations throughout our forecast region.
W or NW flow behind the front on Tuesday will continue light to moderate rain and snow continuing behind the front and then focusing more on regions of convergence late in the day with a NW flow. Regions of convergence appear to be just south of Snoqualmie Pass and near Stevens Pass. Some areas of convergence are likely to experience moderate to heavy snow. Snow levels will be well below pass level on Tuesday.
Weather Forecast
Hurricane Ridge
| Monday | High clouds lowering and thickening. Increasing light snow (or rain at lower elevations) in the afternoon. Increasing moderate winds. |
Mt. Baker
| Monday | High clouds lowering and thickening. Increasing light snow (or rain at lower elevations) in the afternoon. Increasing moderate winds potentially strong above treeline. |
Washington Pass and Leavenworth
| Monday | High clouds arriving mid-morning, then lowering and thickening. Light snow arriving late in the day in the Washington Pass area, but holding off until evening elsewhere. Moderate winds stronger in the north. Increasing moderate winds, possibly becoming strong above treeline. |
Stevens and Snoqualmie Pass
| Monday | High clouds arriving mid-morning, then lowering and thickening. Increasing light winds with moderate winds above treeline. |
Mt. Rainier, Crystal and White Pass
| Monday | High clouds arriving mid-morning, then lowering and thickening. Increasing light winds with moderate winds above treeline. |
Mt. Hood
| Monday | High clouds arriving late morning, then lowering and thickening. Increasing light winds with moderate winds above treeline. |
Issued: 7:02 AM PDT Monday, March 11, 2019
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Monday Morning | Freezing Level * | 4000' | 2000' | 1500' | 1000' | 2000' | 2000' | 2000' | 2500' |
| Monday Afternoon | Snow Level | 4000' | 3000' | 3500' | 2000' | 3500' | 4000' | 3400' | 5500' |
| Monday Evening | Snow Level | 3000' | 2000' | 3000' | 3000' | 3500' | 4000' | 5000' | 5500' |
| Monday Night | Snow Level | 3000' | 2000' | 2000' | 1500' | 2500' | 2500' | 3000' | 4000' |
| Tuesday Morning | Snow Level | 2000' | 1500' | 2000' | 2000' | 2000' | 2000' | 2000' | 2000' |
| Tuesday Afternoon | Snow Level | 2000' | 1500' | 2500' | 2000' | 2000' | 2000' | 2000' | 2000' |
| Hurricane Ridge | Elevation |
|---|---|
| Monday Morning |
Freezing Level 4000' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 4000' |
| Monday Evening |
Snow Level 3000' |
| Monday Night |
Snow Level 3000' |
| Tuesday Morning |
Snow Level 2000' |
| Tuesday Afternoon |
Snow Level 2000' |
| Mt. Baker | Elevation |
|---|---|
| Monday Morning |
Freezing Level 2000' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 3000' |
| Monday Evening |
Snow Level 2000' |
| Monday Night |
Snow Level 2000' |
| Tuesday Morning |
Snow Level 1500' |
| Tuesday Afternoon |
Snow Level 1500' |
| Washington Pass | Elevation |
|---|---|
| Monday Morning |
Freezing Level 1500' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 3500' |
| Monday Evening |
Snow Level 3000' |
| Monday Night |
Snow Level 2000' |
| Tuesday Morning |
Snow Level 2000' |
| Tuesday Afternoon |
Snow Level 2500' |
| Leavenworth | Elevation |
|---|---|
| Monday Morning |
Freezing Level 1000' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 2000' |
| Monday Evening |
Snow Level 3000' |
| Monday Night |
Snow Level 1500' |
| Tuesday Morning |
Snow Level 2000' |
| Tuesday Afternoon |
Snow Level 2000' |
| Stevens Pass | Elevation |
|---|---|
| Monday Morning |
Freezing Level 2000' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 3500' |
| Monday Evening |
Snow Level 3500' |
| Monday Night |
Snow Level 2500' |
| Tuesday Morning |
Snow Level 2000' |
| Tuesday Afternoon |
Snow Level 2000' |
| Snoqualmie Pass | Elevation |
|---|---|
| Monday Morning |
Freezing Level 2000' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 4000' |
| Monday Evening |
Snow Level 4000' |
| Monday Night |
Snow Level 2500' |
| Tuesday Morning |
Snow Level 2000' |
| Tuesday Afternoon |
Snow Level 2000' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Monday Morning |
Freezing Level 2000' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 3400' |
| Monday Evening |
Snow Level 5000' |
| Monday Night |
Snow Level 3000' |
| Tuesday Morning |
Snow Level 2000' |
| Tuesday Afternoon |
Snow Level 2000' |
| Mt. Hood | Elevation |
|---|---|
| Monday Morning |
Freezing Level 2500' (Easterly Flow *) |
| Monday Afternoon |
Snow Level 5500' |
| Monday Evening |
Snow Level 5500' |
| Monday Night |
Snow Level 4000' |
| Tuesday Morning |
Snow Level 2000' |
| Tuesday Afternoon |
Snow Level 2000' |
* 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 | Monday Night | Wednesday | |
|---|---|---|---|
| 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | LT 0.10 | 0.25 - 0.50 | LT 0.10 |
| Mt Baker Ski Area | LT 0.25 | 0.75 -1.00 | LT 0.25 |
| Washington Pass | LT 0.10 | 0.25 - 0.50 | LT 0.10 |
| Leavenworth | 0 | LT 0.25 | LT 0.10 |
| Stevens Pass | 0 | 0.50 - 0.75 | 0.25 |
| Snoqualmie Pass | 0 | 0.50 - 0.75 | 0.50 |
| Mission Ridge | 0 | LT 0.10 | LT 0.10 |
| Crystal Mt | 0 | 0.25 | 0.25 |
| Paradise | 0 | 0.75 -1.00 | 0.50 |
| White Pass | 0 | 0.50 | 0.25 |
| Mt Hood Meadows | 0 | 0.25 - 0.50 | 0.75 -1.00 |
| Timberline | 0 | 0.50 | 0.75 -1.00 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Monday | LT 0.10 |
| Monday Night | 0.25 - 0.50 |
| Wednesday | LT 0.10 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Monday | LT 0.25 |
| Monday Night | 0.75 -1.00 |
| Wednesday | LT 0.25 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Monday | LT 0.10 |
| Monday Night | 0.25 - 0.50 |
| Wednesday | LT 0.10 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Monday | 0 |
| Monday Night | LT 0.25 |
| Wednesday | LT 0.10 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Monday | 0 |
| Monday Night | 0.50 - 0.75 |
| Wednesday | 0.25 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Monday | 0 |
| Monday Night | 0.50 - 0.75 |
| Wednesday | 0.50 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Monday | 0 |
| Monday Night | LT 0.10 |
| Wednesday | LT 0.10 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Monday | 0 |
| Monday Night | 0.25 |
| Wednesday | 0.25 |
| Paradise | Precipitation Forecast |
|---|---|
| Monday | 0 |
| Monday Night | 0.75 -1.00 |
| Wednesday | 0.50 |
| White Pass | Precipitation Forecast |
|---|---|
| Monday | 0 |
| Monday Night | 0.50 |
| Wednesday | 0.25 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Monday | 0 |
| Monday Night | 0.25 - 0.50 |
| Wednesday | 0.75 -1.00 |
| Timberline | Precipitation Forecast |
|---|---|
| Monday | 0 |
| Monday Night | 0.50 |
| Wednesday | 0.75 -1.00 |
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: 7:02 AM PDT Monday, March 11, 2019
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Monday Morning | SSW 10 - 20 | S 20 - 30 | SSW 10 - 20 | SSW 5 - 15 | SW 5 - 15 |
| Monday Afternoon | SSW 20 - 30 | SSW 20 - 30 | SW 15 - 25 | SSW 10 - 20 | SW 10 - 20 |
| Monday Evening | SSW 20 - 30 | SSW 25 - 35 | SSW 20 - 30 | S 20 - 30 | SW 20 - 30 |
| Monday Night | W 15 - 25 | S 15 - 25 | SSW 15 - 25 | SW 15 - 25 | SW 25 - 35 |
| Tuesday Morning | W 20 - 30 | SW 10 - 20 | WSW 15 - 25 | WSW 20 - 30 | W 25 - 35 |
| Tuesday Afternoon | W 20 - 30 | WSW 15 - 25 | WSW 15 - 25 | WSW 20 - 30 | W 25 - 35 |
| Hurricane Ridge | Elevation |
|---|---|
| Monday Morning | SSW 10 - 20 |
| Monday Afternoon | SSW 20 - 30 |
| Monday Evening | SSW 20 - 30 |
| Monday Night | W 15 - 25 |
| Tuesday Morning | W 20 - 30 |
| Tuesday Afternoon | W 20 - 30 |
| Mt. Baker | Elevation |
|---|---|
| Monday Morning | S 20 - 30 |
| Monday Afternoon | SSW 20 - 30 |
| Monday Evening | SSW 25 - 35 |
| Monday Night | S 15 - 25 |
| Tuesday Morning | SW 10 - 20 |
| Tuesday Afternoon | WSW 15 - 25 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Monday Morning | SSW 10 - 20 |
| Monday Afternoon | SW 15 - 25 |
| Monday Evening | SSW 20 - 30 |
| Monday Night | SSW 15 - 25 |
| Tuesday Morning | WSW 15 - 25 |
| Tuesday Afternoon | WSW 15 - 25 |
| Mt. Rainier | Elevation |
|---|---|
| Monday Morning | SSW 5 - 15 |
| Monday Afternoon | SSW 10 - 20 |
| Monday Evening | S 20 - 30 |
| Monday Night | SW 15 - 25 |
| Tuesday Morning | WSW 20 - 30 |
| Tuesday Afternoon | WSW 20 - 30 |
| Mt. Hood | Elevation |
|---|---|
| Monday Morning | SW 5 - 15 |
| Monday Afternoon | SW 10 - 20 |
| Monday Evening | SW 20 - 30 |
| Monday Night | SW 25 - 35 |
| Tuesday Morning | W 25 - 35 |
| Tuesday Afternoon | W 25 - 35 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Monday Morning | SSW 10 - 20 |
| Monday Afternoon | SSW 20 - 30 |
| Monday Evening | SSW 20 - 30 |
| Monday Night | W 15 - 25 |
| Tuesday Morning | W 20 - 30 |
| Tuesday Afternoon | W 20 - 30 |
| Mt. Baker | Direction - Speed |
|---|---|
| Monday Morning | S 20 - 30 |
| Monday Afternoon | SSW 20 - 30 |
| Monday Evening | SSW 25 - 35 |
| Monday Night | S 15 - 25 |
| Tuesday Morning | SW 10 - 20 |
| Tuesday Afternoon | WSW 15 - 25 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Monday Morning | SSW 10 - 20 |
| Monday Afternoon | SW 15 - 25 |
| Monday Evening | SSW 20 - 30 |
| Monday Night | SSW 15 - 25 |
| Tuesday Morning | WSW 15 - 25 |
| Tuesday Afternoon | WSW 15 - 25 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Monday Morning | SSW 5 - 15 |
| Monday Afternoon | SSW 10 - 20 |
| Monday Evening | S 20 - 30 |
| Monday Night | SW 15 - 25 |
| Tuesday Morning | WSW 20 - 30 |
| Tuesday Afternoon | WSW 20 - 30 |
| Mt. Hood | Direction - Speed |
|---|---|
| Monday Morning | SW 5 - 15 |
| Monday Afternoon | SW 10 - 20 |
| Monday Evening | SW 20 - 30 |
| Monday Night | SW 25 - 35 |
| Tuesday Morning | W 25 - 35 |
| Tuesday Afternoon | W 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.
Free Winds at 9000' (mph)
| Mt. Baker | Washington Pass | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Monday Morning | SW 25 - 35 | SW 20 - 30 | WSW 20 - 30 | WSW 15 - 25 | WSW 10 - 20 |
| Monday Afternoon | SW 40 - 60 | SW 35 - 50 | SW 35 - 50 | SW 30 - 45 | WSW 20 - 30 |
| Monday Evening | SW 25 - 35 | SW 35 - 50 | SW 40 - 60 | SW 40 - 60 | SW 35 - 50 |
| Monday Night | SW 15 - 25 | SW 20 - 30 | SW 30 - 45 | SW 35 - 50 | SW 40 - 60 |
| Tuesday Morning | WSW 10 - 20 | WSW 10 - 20 | WSW 20 - 30 | WSW 30 - 45 | WSW 30 - 45 |
| Tuesday Afternoon | W 15 - 25 | W 20 - 30 | WNW 30 - 45 | W 30 - 45 | W 35 - 50 |
| Mt. Baker | Direction - Speed |
|---|---|
| Monday Morning | SW 25 - 35 |
| Monday Afternoon | SW 40 - 60 |
| Monday Evening | SW 25 - 35 |
| Monday Night | SW 15 - 25 |
| Tuesday Morning | WSW 10 - 20 |
| Tuesday Afternoon | W 15 - 25 |
| Washington Pass | Direction - Speed |
|---|---|
| Monday Morning | SW 20 - 30 |
| Monday Afternoon | SW 35 - 50 |
| Monday Evening | SW 35 - 50 |
| Monday Night | SW 20 - 30 |
| Tuesday Morning | WSW 10 - 20 |
| Tuesday Afternoon | W 20 - 30 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Monday Morning | WSW 20 - 30 |
| Monday Afternoon | SW 35 - 50 |
| Monday Evening | SW 40 - 60 |
| Monday Night | SW 30 - 45 |
| Tuesday Morning | WSW 20 - 30 |
| Tuesday Afternoon | WNW 30 - 45 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Monday Morning | WSW 15 - 25 |
| Monday Afternoon | SW 30 - 45 |
| Monday Evening | SW 40 - 60 |
| Monday Night | SW 35 - 50 |
| Tuesday Morning | WSW 30 - 45 |
| Tuesday Afternoon | W 30 - 45 |
| Mt. Hood | Direction - Speed |
|---|---|
| Monday Morning | WSW 10 - 20 |
| Monday Afternoon | WSW 20 - 30 |
| Monday Evening | SW 35 - 50 |
| Monday Night | SW 40 - 60 |
| Tuesday Morning | WSW 30 - 45 |
| Tuesday Afternoon | W 35 - 50 |
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, 2019
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