Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Weather Synopsis for Tuesday night through Wednesday
The ridge of high pressure continues to dominate the weather with the ridge axis just offshore. Expect generally mostly clear skies in the mountains, light alpine winds, and some easterly flow. Tuesday night and Wednesday, the pool of cold air east of the Cascade Crest will diminish as the trough that brought it is now far to the east. The pressure gradient across the Cascades will also weaken and easterly flow through the mountain gaps will lose strength. Meanwhile, cutoff low well offshore heads ESE towards northern California with quiescent weather remaining over our region and the ridge starts breaking down from the north with moisture spilling into British Columbia. The Pacific Northwest is in between. More fog is anticipated Tuesday night and Wednesday with very little wind to mix the atmosphere.
The same pattern continues Wednesday night and Thursday with a low pressure developing west of Vancouver Island. Moisture continues spilling into British Columbia with clouds increasing in northwest Washington state. On Thursday there may be a chance of light drizzle in the mountains. Easterly flow will increase slightly with the approaching trough.
Weather Forecast
Hurricane Ridge
| Tuesday Night | Mostly clear and mild. Some high clouds after midnight. Light to calm winds. |
| Wednesday | Mostly clear, sunny, and warm. Light winds. |
Mt. Baker
| Tuesday Night | Mostly clear and mild. Some high clouds after midnight. Light to calm winds. |
| Wednesday | Mostly clear, sunny, and warm. Light winds. |
Washington Pass and Leavenworth
| Tuesday Night | Mostly clear and cool with a weak inversion. Some high clouds after midnight. Light to calm winds. Light E wind through Washington Pass. |
| Wednesday | Mostly clear, sunny, and warm. Light winds. Multiple freezing levels possible, but inversion weaker. |
Stevens and Snoqualmie Pass
| Tuesday Night | Mostly clear and cool. Some high clouds after midnight. Calm to light alpine winds; gradually decreasing light E winds through the passes. |
| Wednesday | Mostly clear, sunny, and warm. Light winds. Variable or Light E wind through the passes. Light alpine winds. |
Mt. Rainier, Crystal and White Pass
| Tuesday Night | Mostly clear and mild. Some high clouds after midnight. Light to calm winds. E flow may keep White Pass cold. |
| Wednesday | Mostly clear, sunny, and warm. Light winds. Variable or Light E wind through the passes. Light alpine winds. If enough E flow, White Pass will stay cool, but not cold. |
Mt. Hood
| Tuesday Night | Mostly clear and mild. Multiple freezing levels likely. Light to calm winds. |
| Wednesday | Mostly clear, sunny, and warm. Light winds. Variable or Light E wind through the passes. Light alpine winds. |
Issued: 2:44 PM PST Tuesday, January 29, 2019
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Tuesday Evening | Freezing Level * | 9000' | 7000' | 0' | 0' | 8500' | 8500' | 8500' | 9500' |
| Tuesday Night | Freezing Level * | 8500' | 7000' | 0' | 8500' | 8500' | 8500' | 8500' | 9000' |
| Wednesday Morning | Freezing Level * | 8500' | 7000' | 6500' | 7500' | 8000' | 8000' | 8000' | 9000' |
| Wednesday Afternoon | Freezing Level * | 8500' | 7500' | 6500' | 7500' | 8000' | 8500' | 8500' | 9500' |
| Wednesday Evening | Freezing Level * | 9000' | 8000' | 7000' | 8000' | 8000' | 8000' | 9000' | 9500' |
| Wednesday Night | Freezing Level * | 9000' | 7500' | 6000' | 8000' | 8000' | 8000' | 9000' | 9500' |
| Thursday Morning | Freezing Level * | 8500' | 7500' | 6000' | 7000' | 7500' | 8000' | 8000' | 9000' |
| Thursday Afternoon | Freezing Level * | 8000' | 7000' | 7000' | 8000' | 8000' | 8000' | 8500' | 9000' |
| Hurricane Ridge | Elevation |
|---|---|
| Tuesday Evening |
Freezing Level 9000' (Easterly Flow *) |
| Tuesday Night |
Freezing Level 8500' (Easterly Flow *) |
| Wednesday Morning |
Freezing Level 8500' (Easterly Flow *) |
| Wednesday Afternoon |
Freezing Level 8500' (Easterly Flow *) |
| Wednesday Evening |
Freezing Level 9000' (Easterly Flow *) |
| Wednesday Night |
Freezing Level 9000' (Easterly Flow *) |
| Thursday Morning |
Freezing Level 8500' (Easterly Flow *) |
| Thursday Afternoon |
Freezing Level 8000' (Easterly Flow *) |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Evening |
Freezing Level 7000' (Easterly Flow *) |
| Tuesday Night |
Freezing Level 7000' (Easterly Flow *) |
| Wednesday Morning |
Freezing Level 7000' (Easterly Flow *) |
| Wednesday Afternoon |
Freezing Level 7500' (Easterly Flow *) |
| Wednesday Evening |
Freezing Level 8000' (Easterly Flow *) |
| Wednesday Night |
Freezing Level 7500' (Easterly Flow *) |
| Thursday Morning |
Freezing Level 7500' (Easterly Flow *) |
| Thursday Afternoon |
Freezing Level 7000' (Easterly Flow *) |
| Washington Pass | Elevation |
|---|---|
| Tuesday Evening |
Freezing Level 0' (Easterly Flow *) |
| Tuesday Night |
Freezing Level 0' (Easterly Flow *) |
| Wednesday Morning |
Freezing Level 6500' (Easterly Flow *) |
| Wednesday Afternoon |
Freezing Level 6500' (Easterly Flow *) |
| Wednesday Evening |
Freezing Level 7000' (Easterly Flow *) |
| Wednesday Night |
Freezing Level 6000' (Easterly Flow *) |
| Thursday Morning |
Freezing Level 6000' (Easterly Flow *) |
| Thursday Afternoon |
Freezing Level 7000' (Easterly Flow *) |
| Leavenworth | Elevation |
|---|---|
| Tuesday Evening |
Freezing Level 0' (Easterly Flow *) |
| Tuesday Night |
Freezing Level 8500' (Easterly Flow *) |
| Wednesday Morning |
Freezing Level 7500' (Easterly Flow *) |
| Wednesday Afternoon |
Freezing Level 7500' (Easterly Flow *) |
| Wednesday Evening |
Freezing Level 8000' (Easterly Flow *) |
| Wednesday Night |
Freezing Level 8000' (Easterly Flow *) |
| Thursday Morning |
Freezing Level 7000' (Easterly Flow *) |
| Thursday Afternoon |
Freezing Level 8000' (Easterly Flow *) |
| Stevens Pass | Elevation |
|---|---|
| Tuesday Evening |
Freezing Level 8500' (Easterly Flow *) |
| Tuesday Night |
Freezing Level 8500' (Easterly Flow *) |
| Wednesday Morning |
Freezing Level 8000' (Easterly Flow *) |
| Wednesday Afternoon |
Freezing Level 8000' (Easterly Flow *) |
| Wednesday Evening |
Freezing Level 8000' (Easterly Flow *) |
| Wednesday Night |
Freezing Level 8000' (Easterly Flow *) |
| Thursday Morning |
Freezing Level 7500' (Easterly Flow *) |
| Thursday Afternoon |
Freezing Level 8000' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Evening |
Freezing Level 8500' (Easterly Flow *) |
| Tuesday Night |
Freezing Level 8500' (Easterly Flow *) |
| Wednesday Morning |
Freezing Level 8000' (Easterly Flow *) |
| Wednesday Afternoon |
Freezing Level 8500' (Easterly Flow *) |
| Wednesday Evening |
Freezing Level 8000' (Easterly Flow *) |
| Wednesday Night |
Freezing Level 8000' (Easterly Flow *) |
| Thursday Morning |
Freezing Level 8000' (Easterly Flow *) |
| Thursday Afternoon |
Freezing Level 8000' (Easterly Flow *) |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Tuesday Evening |
Freezing Level 8500' (Easterly Flow *) |
| Tuesday Night |
Freezing Level 8500' (Easterly Flow *) |
| Wednesday Morning |
Freezing Level 8000' (Easterly Flow *) |
| Wednesday Afternoon |
Freezing Level 8500' (Easterly Flow *) |
| Wednesday Evening |
Freezing Level 9000' (Easterly Flow *) |
| Wednesday Night |
Freezing Level 9000' (Easterly Flow *) |
| Thursday Morning |
Freezing Level 8000' (Easterly Flow *) |
| Thursday Afternoon |
Freezing Level 8500' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Evening |
Freezing Level 9500' (Easterly Flow *) |
| Tuesday Night |
Freezing Level 9000' (Easterly Flow *) |
| Wednesday Morning |
Freezing Level 9000' (Easterly Flow *) |
| Wednesday Afternoon |
Freezing Level 9500' (Easterly Flow *) |
| Wednesday Evening |
Freezing Level 9500' (Easterly Flow *) |
| Wednesday Night |
Freezing Level 9500' (Easterly Flow *) |
| Thursday Morning |
Freezing Level 9000' (Easterly Flow *) |
| Thursday Afternoon |
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
| Tuesday Night | Wednesday | Wednesday 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 |
| Washington Pass | 0 | 0 | 0 | 0 |
| Leavenworth | 0 | 0 | 0 | 0 |
| Stevens Pass | 0 | 0 | 0 | 0 |
| Snoqualmie Pass | 0 | 0 | 0 | 0 |
| Mission Ridge | 0 | 0 | 0 | 0 |
| Crystal Mt | 0 | 0 | 0 | 0 |
| Paradise | 0 | 0 | 0 | 0 |
| White Pass | 0 | 0 | 0 | 0 |
| Mt Hood Meadows | 0 | 0 | 0 | 0 |
| Timberline | 0 | 0 | 0 | 0 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Tuesday Night | 0 |
| Wednesday | 0 |
| Wednesday Night | 0 |
| Wednesday | 0 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Tuesday Night | 0 |
| Wednesday | 0 |
| Wednesday Night | 0 |
| Wednesday | 0 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Tuesday Night | 0 |
| Wednesday | 0 |
| Wednesday Night | 0 |
| Wednesday | 0 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Tuesday Night | 0 |
| Wednesday | 0 |
| Wednesday Night | 0 |
| Wednesday | 0 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Tuesday Night | 0 |
| Wednesday | 0 |
| Wednesday Night | 0 |
| Wednesday | 0 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Tuesday Night | 0 |
| Wednesday | 0 |
| Wednesday Night | 0 |
| Wednesday | 0 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Tuesday Night | 0 |
| Wednesday | 0 |
| Wednesday Night | 0 |
| Wednesday | 0 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Tuesday Night | 0 |
| Wednesday | 0 |
| Wednesday Night | 0 |
| Wednesday | 0 |
| Paradise | Precipitation Forecast |
|---|---|
| Tuesday Night | 0 |
| Wednesday | 0 |
| Wednesday Night | 0 |
| Wednesday | 0 |
| White Pass | Precipitation Forecast |
|---|---|
| Tuesday Night | 0 |
| Wednesday | 0 |
| Wednesday Night | 0 |
| Wednesday | 0 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Tuesday Night | 0 |
| Wednesday | 0 |
| Wednesday Night | 0 |
| Wednesday | 0 |
| Timberline | Precipitation Forecast |
|---|---|
| Tuesday Night | 0 |
| Wednesday | 0 |
| Wednesday Night | 0 |
| Wednesday | 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: 2:44 PM PST Tuesday, January 29, 2019
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Tuesday Evening | W 0 - 10 | SW 0 - 10 | VAR 0 - 10 | VAR 0 - 10 | SE 0 - 10 |
| Tuesday Night | WSW 5 - 15 | WSW 0 - 10 | W 0 - 10 | VAR 0 - 10 | SSE 0 - 10 |
| Wednesday Morning | WSW 0 - 10 | WSW 0 - 10 | W 5 - 15 | W 0 - 10 | WSW 0 - 10 |
| Wednesday Afternoon | WSW 5 - 15 | SW 5 - 15 | W 5 - 15 | W 0 - 10 | W 0 - 10 |
| Hurricane Ridge | Elevation |
|---|---|
| Tuesday Evening | W 0 - 10 |
| Tuesday Night | WSW 5 - 15 |
| Wednesday Morning | WSW 0 - 10 |
| Wednesday Afternoon | WSW 5 - 15 |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Evening | SW 0 - 10 |
| Tuesday Night | WSW 0 - 10 |
| Wednesday Morning | WSW 0 - 10 |
| Wednesday Afternoon | SW 5 - 15 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Evening | VAR 0 - 10 |
| Tuesday Night | W 0 - 10 |
| Wednesday Morning | W 5 - 15 |
| Wednesday Afternoon | W 5 - 15 |
| Mt. Rainier | Elevation |
|---|---|
| Tuesday Evening | VAR 0 - 10 |
| Tuesday Night | VAR 0 - 10 |
| Wednesday Morning | W 0 - 10 |
| Wednesday Afternoon | W 0 - 10 |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Evening | SE 0 - 10 |
| Tuesday Night | SSE 0 - 10 |
| Wednesday Morning | WSW 0 - 10 |
| Wednesday Afternoon | W 0 - 10 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Tuesday Evening | W 0 - 10 |
| Tuesday Night | WSW 5 - 15 |
| Wednesday Morning | WSW 0 - 10 |
| Wednesday Afternoon | WSW 5 - 15 |
| Mt. Baker | Direction - Speed |
|---|---|
| Tuesday Evening | SW 0 - 10 |
| Tuesday Night | WSW 0 - 10 |
| Wednesday Morning | WSW 0 - 10 |
| Wednesday Afternoon | SW 5 - 15 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Tuesday Evening | VAR 0 - 10 |
| Tuesday Night | W 0 - 10 |
| Wednesday Morning | W 5 - 15 |
| Wednesday Afternoon | W 5 - 15 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Tuesday Evening | VAR 0 - 10 |
| Tuesday Night | VAR 0 - 10 |
| Wednesday Morning | W 0 - 10 |
| Wednesday Afternoon | W 0 - 10 |
| Mt. Hood | Direction - Speed |
|---|---|
| Tuesday Evening | SE 0 - 10 |
| Tuesday Night | SSE 0 - 10 |
| Wednesday Morning | WSW 0 - 10 |
| Wednesday Afternoon | W 0 - 10 |
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 | |
|---|---|---|---|---|---|
| Tuesday Evening | W 15 - 25 | W 10 - 20 | NW 15 - 25 | NW 15 - 25 | NW 10 - 20 |
| Tuesday Night | W 25 - 35 | W 20 - 30 | WNW 20 - 30 | WNW 15 - 25 | WNW 10 - 20 |
| Wednesday Morning | W 20 - 30 | W 20 - 30 | NW 25 - 35 | NW 20 - 30 | NW 10 - 20 |
| Wednesday Afternoon | W 20 - 30 | W 20 - 30 | WNW 25 - 35 | WNW 20 - 30 | NW 10 - 20 |
| Mt. Baker | Direction - Speed |
|---|---|
| Tuesday Evening | W 15 - 25 |
| Tuesday Night | W 25 - 35 |
| Wednesday Morning | W 20 - 30 |
| Wednesday Afternoon | W 20 - 30 |
| Washington Pass | Direction - Speed |
|---|---|
| Tuesday Evening | W 10 - 20 |
| Tuesday Night | W 20 - 30 |
| Wednesday Morning | W 20 - 30 |
| Wednesday Afternoon | W 20 - 30 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Tuesday Evening | NW 15 - 25 |
| Tuesday Night | WNW 20 - 30 |
| Wednesday Morning | NW 25 - 35 |
| Wednesday Afternoon | WNW 25 - 35 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Tuesday Evening | NW 15 - 25 |
| Tuesday Night | WNW 15 - 25 |
| Wednesday Morning | NW 20 - 30 |
| Wednesday Afternoon | WNW 20 - 30 |
| Mt. Hood | Direction - Speed |
|---|---|
| Tuesday Evening | NW 10 - 20 |
| Tuesday Night | WNW 10 - 20 |
| Wednesday Morning | NW 10 - 20 |
| Wednesday Afternoon | NW 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 PST Tuesday, January 29, 2019
Extended Weather Synopsis for Wednesday night through Wednesday
The low and associated trough dig in offshore Thursday night with southwest winds out ahead bringing rain and high elevation snow into our region, likely favoring the Olympics and volcanoes. The southwest flow continues through Friday with cooling over the Pacific Northwest and continued shower activity. The stronger chunk of energy splits south to California during the day Friday with a trough over the Pacific northwest Friday night and westerly flow on Saturday sustaining the cool shower activity.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Thursday Night | Snow Level | 4500' - 5500' | 6000' - 7000' | 7000' - 8000' | * |
| Friday | Snow Level | 4000' - 5000' | 4500' - 5500' | 5000' - 6000' | * |
| Friday Night | Snow Level | 3500' - 4500' | 3500' - 4500' | 4000' - 5000' | |
| Saturday | Snow Level | 2500' - 3500' | 3000' - 4000' | 4500' - 5500' |
| Mt. Baker | Elevation |
|---|---|
| Thursday Night |
Snow Level 4500' - 5500' (Easterly Flow *) |
| Friday |
Snow Level 4000' - 5000' (Easterly Flow *) |
| Friday Night |
Snow Level 3500' - 4500' |
| Saturday |
Snow Level 2500' - 3500' |
| Snoqualmie Pass | Elevation |
|---|---|
| Thursday Night |
Snow Level 6000' - 7000' (Easterly Flow *) |
| Friday |
Snow Level 4500' - 5500' (Easterly Flow *) |
| Friday Night |
Snow Level 3500' - 4500' |
| Saturday |
Snow Level 3000' - 4000' |
| Mt. Hood | Elevation |
|---|---|
| Thursday Night |
Snow Level 7000' - 8000' (Easterly Flow *) |
| Friday |
Snow Level 5000' - 6000' (Easterly Flow *) |
| Friday Night |
Snow Level 4000' - 5000' |
| Saturday |
Snow Level 4500' - 5500' |
* 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 Jan 29, 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.