Mountain Weather Forecast
Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Weather Synopsis for Monday night through Wednesday
Remnants of a weak low pressure system will continue to spin scattered showers along the west slopes of the Cascades from I-90 and south to Mt Hood through the evening hours. A broad upper level trough extending from central Canada will stay over our region through Tuesday night. Drier air will filter into the region tonight with clearing skies expected. Tuesday should be a fair weather day with mostly sunny skies and freezing levels rising to 4000-5000' in the afternoon. There may be just enough low-level moisture and instability for some afternoon clouds for the central/south WA Cascades on both sides of the crest.
The forecast becomes more interesting as we head into Wednesday. Surface high pressure over the interior BC will push much colder air into the northeast Cascades and to a lesser extent out the Fraser River Valley Tuesday night. Forecast models have finally come into agreement that warm frontal moisture will begin to push northward from Oregon on Wednesday, spreading light snow northward with an upslope component along the east slopes of the Cascades. While snowfall looks fairly light over the WA Cascades Wednesday, there's the potential for heavier snow near Mt Hood and perhaps the eastern slopes of the Olympics. Offshore flow and moderate to locally strong E-SE winds will increase on Wednesday as well.
Weather Forecast
Olympics
| Monday Night | Partly to mostly cloudy, then mostly clear after midnight. |
| Tuesday |
West North
| Monday Night | Partly to mostly cloudy, then mostly clear after midnight. |
| Tuesday | Mostly sunny. |
West Central
| Monday Night | Mostly cloudy with a chance of light rain and snow showers in the evening, then becoming mostly clear after midnight. |
| Tuesday | Mostly sunny in the morning, then partly to mostly sunny with a few afternoon clouds. |
West South
| Monday Night | Mostly cloudy with a chance of light rain and snow showers in the evening, then becoming mostly clear after midnight. |
| Tuesday | Mostly sunny in the morning, then partly to mostly sunny with a few afternoon clouds.Light and variable winds. |
Stevens Pass
| Monday Night | Mostly cloudy with a slight chance of light rain and snow showers in the evening, then becoming mostly clear after midnight. Light and variable winds. |
| Tuesday | Mostly sunny in the morning, then partly to mostly sunny with a few afternoon clouds.Light and variable winds. |
Snoqualmie Pass
| Monday Night | Mostly cloudy with a chance of light rain and snow showers in the evening, then becoming mostly clear after midnight. Light and variable winds. |
| Tuesday | Mostly sunny in the morning, then partly to mostly sunny with a few afternoon clouds. |
East North
| Monday Night | Partly cloudy, then mostly clear after midnight. |
| Tuesday | Mostly sunny. |
East Central
| Monday Night | Partly to mostly cloudy, then mostly clear after midnight. |
| Tuesday | Mostly sunny in the morning, then partly to mostly sunny with a few afternoon clouds. |
East South
| Monday Night | Partly to mostly cloudy, then mostly clear after midnight. |
| Tuesday | Mostly sunny in the morning, then partly to mostly sunny with a few afternoon clouds. |
Mt. Hood
| Monday Night | Mostly cloudy with a chance of light rain and snow showers in the evening, then becoming mostly clear after midnight. |
| Tuesday | Mostly sunny. |
Issued: 2:05 PM PST Monday, February 12, 2024
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Monday Evening | Snow Level | None' | None' | None' | None' | 3500' | 3500' | None' | 3500' |
| Monday Night | Snow Level | None' | None' | None' | None' | 2000' | 2500' | None' | 3500' |
| Tuesday Morning | Snow Level | None' | None' | None' | None' | 3000' | 3000' | None' | 4000' |
| Tuesday Afternoon | Snow Level | None' | None' | None' | None' | 4500' | 4500' | None' | 5000' |
| Tuesday Evening | Snow Level | None' | None' | None' | None' | 2000' | 2000' | None' | 4000' |
| Tuesday Night | Snow Level* | None' | None' | None' | None' | 1500' | 2000' | None' | 3000' |
| Wednesday Morning | Snow Level* | None' | None' | None' | None' | 2000' | 2000' | None' | 3000' |
| Wednesday Afternoon | Snow Level* | None' | None' | None' | None' | 2500' | 2500' | None' | 3000' |
| Hurricane Ridge | Elevation |
|---|---|
| Monday Evening |
Snow Level None' |
| Monday Night |
Snow Level None' |
| Tuesday Morning |
Snow Level None' |
| Tuesday Afternoon |
Snow Level None' |
| Tuesday Evening |
Snow Level None' |
| Tuesday Night |
Snow Level None' (Easterly Flow *) |
| Wednesday Morning |
Snow Level None' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level None' (Easterly Flow *) |
| Mt. Baker | Elevation |
|---|---|
| Monday Evening |
Snow Level None' |
| Monday Night |
Snow Level None' |
| Tuesday Morning |
Snow Level None' |
| Tuesday Afternoon |
Snow Level None' |
| Tuesday Evening |
Snow Level None' |
| Tuesday Night |
Snow Level None' (Easterly Flow *) |
| Wednesday Morning |
Snow Level None' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level None' (Easterly Flow *) |
| Washington Pass | Elevation |
|---|---|
| Monday Evening |
Snow Level None' |
| Monday Night |
Snow Level None' |
| Tuesday Morning |
Snow Level None' |
| Tuesday Afternoon |
Snow Level None' |
| Tuesday Evening |
Snow Level None' |
| Tuesday Night |
Snow Level None' (Easterly Flow *) |
| Wednesday Morning |
Snow Level None' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level None' (Easterly Flow *) |
| Leavenworth | Elevation |
|---|---|
| Monday Evening |
Snow Level None' |
| Monday Night |
Snow Level None' |
| Tuesday Morning |
Snow Level None' |
| Tuesday Afternoon |
Snow Level None' |
| Tuesday Evening |
Snow Level None' |
| Tuesday Night |
Snow Level None' (Easterly Flow *) |
| Wednesday Morning |
Snow Level None' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level None' (Easterly Flow *) |
| Stevens Pass | Elevation |
|---|---|
| Monday Evening |
Snow Level 3500' |
| Monday Night |
Snow Level 2000' |
| Tuesday Morning |
Snow Level 3000' |
| Tuesday Afternoon |
Snow Level 4500' |
| Tuesday Evening |
Snow Level 2000' |
| Tuesday Night |
Snow Level 1500' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 2000' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 2500' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Monday Evening |
Snow Level 3500' |
| Monday Night |
Snow Level 2500' |
| Tuesday Morning |
Snow Level 3000' |
| Tuesday Afternoon |
Snow Level 4500' |
| Tuesday Evening |
Snow Level 2000' |
| Tuesday Night |
Snow Level 2000' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 2000' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 2500' (Easterly Flow *) |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Monday Evening |
Snow Level None' |
| Monday Night |
Snow Level None' |
| Tuesday Morning |
Snow Level None' |
| Tuesday Afternoon |
Snow Level None' |
| Tuesday Evening |
Snow Level None' |
| Tuesday Night |
Snow Level None' (Easterly Flow *) |
| Wednesday Morning |
Snow Level None' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level None' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Monday Evening |
Snow Level 3500' |
| Monday Night |
Snow Level 3500' |
| Tuesday Morning |
Snow Level 4000' |
| Tuesday Afternoon |
Snow Level 5000' |
| Tuesday Evening |
Snow Level 4000' |
| Tuesday Night |
Snow Level 3000' (Easterly Flow *) |
| Wednesday Morning |
Snow Level 3000' (Easterly Flow *) |
| Wednesday Afternoon |
Snow Level 3000' (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
| Monday Night | Tuesday | Tuesday Night | Wednesday | |
|---|---|---|---|---|
| 4 pm - 4 am | 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | 0 | 0 | 0 | 0 |
| Mt Baker Ski Area | 0 | 0 | 0 | 0 |
| Mt. Loop - Barlow Pass | 0 | 0 | 0 | 0 |
| Stevens Pass | 0 | 0 | 0 | LT 0.10 |
| Snoqualmie Pass | LT 0.10 | 0 | 0 | LT 0.10 |
| Crystal Mt | LT 0.10 | 0 | 0 | LT 0.10 |
| Paradise | LT 0.10 | 0 | 0 | LT 0.10 |
| White Pass | LT 0.10 | 0 | 0 | LT 0.10 |
| Washington Pass | 0 | 0 | 0 | LT 0.10 |
| Mission Ridge | 0 | 0 | 0 | LT 0.10 |
| Salmon la Sac - Gallagher Head | 0 | 0 | 0 | LT 0.10 |
| Tieton River - Darland Mt. | 0 | 0 | 0 | LT 0.25 |
| Mt Hood Meadows | LT 0.10 | 0 | 0 | 0.50 |
| Timberline | LT 0.10 | 0 | 0 | 0.50 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Monday Night | 0 |
| Tuesday | 0 |
| Tuesday Night | 0 |
| Wednesday | 0 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Monday Night | 0 |
| Tuesday | 0 |
| Tuesday Night | 0 |
| Wednesday | 0 |
| Mt. Loop - Barlow Pass | Precipitation Forecast |
|---|---|
| Monday Night | 0 |
| Tuesday | 0 |
| Tuesday Night | 0 |
| Wednesday | 0 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Monday Night | 0 |
| Tuesday | 0 |
| Tuesday Night | 0 |
| Wednesday | LT 0.10 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Monday Night | LT 0.10 |
| Tuesday | 0 |
| Tuesday Night | 0 |
| Wednesday | LT 0.10 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Monday Night | LT 0.10 |
| Tuesday | 0 |
| Tuesday Night | 0 |
| Wednesday | LT 0.10 |
| Paradise | Precipitation Forecast |
|---|---|
| Monday Night | LT 0.10 |
| Tuesday | 0 |
| Tuesday Night | 0 |
| Wednesday | LT 0.10 |
| White Pass | Precipitation Forecast |
|---|---|
| Monday Night | LT 0.10 |
| Tuesday | 0 |
| Tuesday Night | 0 |
| Wednesday | LT 0.10 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Monday Night | 0 |
| Tuesday | 0 |
| Tuesday Night | 0 |
| Wednesday | LT 0.10 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Monday Night | 0 |
| Tuesday | 0 |
| Tuesday Night | 0 |
| Wednesday | LT 0.10 |
| Salmon la Sac - Gallagher Head | Precipitation Forecast |
|---|---|
| Monday Night | 0 |
| Tuesday | 0 |
| Tuesday Night | 0 |
| Wednesday | LT 0.10 |
| Tieton River - Darland Mt. | Precipitation Forecast |
|---|---|
| Monday Night | 0 |
| Tuesday | 0 |
| Tuesday Night | 0 |
| Wednesday | LT 0.25 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Monday Night | LT 0.10 |
| Tuesday | 0 |
| Tuesday Night | 0 |
| Wednesday | 0.50 |
| Timberline | Precipitation Forecast |
|---|---|
| Monday Night | LT 0.10 |
| Tuesday | 0 |
| Tuesday Night | 0 |
| Wednesday | 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: 2:05 PM PST Monday, February 12, 2024
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Monday Evening | --- None - None | --- None - None | --- None - None | --- None - None | W None - None |
| Monday Night | --- None - None | --- None - None | --- None - None | --- None - None | SW None - None |
| Tuesday Morning | --- None - None | --- None - None | --- None - None | --- None - None | VAR None - None |
| Tuesday Afternoon | --- None - None | --- None - None | --- None - None | --- None - None | SW None - None |
| Hurricane Ridge | Elevation |
|---|---|
| Monday Evening | --- None - None |
| Monday Night | --- None - None |
| Tuesday Morning | --- None - None |
| Tuesday Afternoon | --- None - None |
| Mt. Baker | Elevation |
|---|---|
| Monday Evening | --- None - None |
| Monday Night | --- None - None |
| Tuesday Morning | --- None - None |
| Tuesday Afternoon | --- None - None |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Monday Evening | --- None - None |
| Monday Night | --- None - None |
| Tuesday Morning | --- None - None |
| Tuesday Afternoon | --- None - None |
| Mt. Rainier | Elevation |
|---|---|
| Monday Evening | --- None - None |
| Monday Night | --- None - None |
| Tuesday Morning | --- None - None |
| Tuesday Afternoon | --- None - None |
| Mt. Hood | Elevation |
|---|---|
| Monday Evening | W None - None |
| Monday Night | SW None - None |
| Tuesday Morning | VAR None - None |
| Tuesday Afternoon | SW None - None |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Monday Evening | --- None - None |
| Monday Night | --- None - None |
| Tuesday Morning | --- None - None |
| Tuesday Afternoon | --- None - None |
| Mt. Baker | Direction - Speed |
|---|---|
| Monday Evening | --- None - None |
| Monday Night | --- None - None |
| Tuesday Morning | --- None - None |
| Tuesday Afternoon | --- None - None |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Monday Evening | --- None - None |
| Monday Night | --- None - None |
| Tuesday Morning | --- None - None |
| Tuesday Afternoon | --- None - None |
| Mt. Rainier | Direction - Speed |
|---|---|
| Monday Evening | --- None - None |
| Monday Night | --- None - None |
| Tuesday Morning | --- None - None |
| Tuesday Afternoon | --- None - None |
| Mt. Hood | Direction - Speed |
|---|---|
| Monday Evening | W None - None |
| Monday Night | SW None - None |
| Tuesday Morning | VAR None - None |
| Tuesday Afternoon | SW None - None |
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 Evening | --- None - None | --- None - None | --- None - None | --- None - None | --- None - None |
| Monday Night | --- None - None | --- None - None | --- None - None | --- None - None | --- None - None |
| Tuesday Morning | --- None - None | --- None - None | --- None - None | --- None - None | --- None - None |
| Tuesday Afternoon | --- None - None | --- None - None | --- None - None | --- None - None | --- None - None |
| Mt. Baker | Direction - Speed |
|---|---|
| Monday Evening | --- None - None |
| Monday Night | --- None - None |
| Tuesday Morning | --- None - None |
| Tuesday Afternoon | --- None - None |
| Washington Pass | Direction - Speed |
|---|---|
| Monday Evening | --- None - None |
| Monday Night | --- None - None |
| Tuesday Morning | --- None - None |
| Tuesday Afternoon | --- None - None |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Monday Evening | --- None - None |
| Monday Night | --- None - None |
| Tuesday Morning | --- None - None |
| Tuesday Afternoon | --- None - None |
| Mt. Rainier | Direction - Speed |
|---|---|
| Monday Evening | --- None - None |
| Monday Night | --- None - None |
| Tuesday Morning | --- None - None |
| Tuesday Afternoon | --- None - None |
| Mt. Hood | Direction - Speed |
|---|---|
| Monday Evening | --- None - None |
| Monday Night | --- None - None |
| Tuesday Morning | --- None - None |
| Tuesday Afternoon | --- None - None |
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: 2:05 PM PST Monday, February 12, 2024
Extended Weather Synopsis for Wednesday night through Friday
The general pattern over the extended shows waves of warm frontal precipitation advancing northward Wednesday night through Friday. It's unclear how long cold air stays entrenched over the Cascades. Mt Hood seems likely to be the benefactor for heavier precipitation in this pattern. There will likely be periods of mixed precipitation as temperatures gradually warm along the west slopes of the Cascades heading into the weekend.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Wednesday Night | Snow Level | None' - None' | None' - None' | None' - None' | * |
| Thursday | Snow Level | None' - None' | None' - None' | None' - None' | * |
| Thursday Night | Snow Level | None' - None' | None' - None' | None' - None' | * |
| Friday | Snow Level | None' - None' | None' - None' | None' - None' | * |
| Mt. Baker | Elevation |
|---|---|
| Wednesday Night |
Snow Level None' - None' (Easterly Flow *) |
| Thursday |
Snow Level None' - None' (Easterly Flow *) |
| Thursday Night |
Snow Level None' - None' (Easterly Flow *) |
| Friday |
Snow Level None' - None' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Wednesday Night |
Snow Level None' - None' (Easterly Flow *) |
| Thursday |
Snow Level None' - None' (Easterly Flow *) |
| Thursday Night |
Snow Level None' - None' (Easterly Flow *) |
| Friday |
Snow Level None' - None' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Wednesday Night |
Snow Level None' - None' (Easterly Flow *) |
| Thursday |
Snow Level None' - None' (Easterly Flow *) |
| Thursday Night |
Snow Level None' - None' (Easterly Flow *) |
| Friday |
Snow Level None' - None' (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.
Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Previous forecast from Feb. 12, 2024
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.