Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Weather Synopsis for Sunday night through Wednesday
Strong high pressure will remain anchored over the Inland NW, blocking weather systems from reaching the area through at least Tuesday.
High freezing levels and mostly clear skies will continue through Monday afternoon with a few important caveats. Constant light to moderate easterly flow will cause locally cooler temperatures in and around the Cascade Passes. Temperature inversions like the one seen this afternoon at Washington Pass stations with temperatures near 40 degrees at ridgetop (6700 ft) and a chilly 25 degrees at Pass level (5400 ft) will be common. Temperatures for areas further west of the Cascade crest like Paradise, Mt. Baker and Hurricane Ridge will continue in the 40s to even 50s through Monday. Areas of low clouds should be confined to the lower slopes on the east side of the Cascades.
The ridge will begin to shift east and be undercut by an open trough entering central California Monday night and Tuesday. This should allow for freezing levels to first begin lowering in the south Washington Cascades and Mt. Hood area late Monday afternoon. High clouds will spread northward Monday night, with a mix of high and mid clouds and steadily decreasing freezing levels for all areas on Tuesday.
Weather Forecast
Hurricane Ridge
| Sunday Night | Mostly clear and mild. |
| Monday | Mostly sunny and mild. |
Mt. Baker
| Sunday Night | Mostly clear and mild. |
| Monday | Mostly sunny and mild. |
Washington Pass and Leavenworth
| Sunday Night | Mostly clear and mild upper slopes. Cooler with low clouds lower slopes and valleys. |
| Monday | Mostly sunny and mild upper slopes. Cooler with low clouds lower slopes and valleys. |
Stevens and Snoqualmie Pass
| Sunday Night | Mostly clear and mild upper slopes. Cooler with areas of low clouds and fog forming overnight at Pass level. Light to moderate easterly flow at Pass level, stronger gusts western approaches. |
| Monday | Mostly sunny and mild upper slopes. Cooler with areas of low clouds and fog at Pass level in the morning, also becoming mostly sunny. Light to moderate easterly flow at Pass level, stronger gusts western approaches. |
Mt. Rainier, Crystal and White Pass
| Sunday Night | Mostly clear. Mild Mt. Rainier and Crystal Mt area, cooler White Pass area. Areas of low clouds and fog forming overnight at White Pass with breezy E-SE winds. |
| Monday | Mostly sunny. Mild Mt. Rainier and Crystal Mt area, cooler White Pass area. Areas of low clouds and fog White Pass in the morning, also becoming mostly sunny with breezy E-SE winds. |
Mt. Hood
| Sunday Night | Mostly clear and mild upper slopes. Cooler mid-mountain where exposed to cool E-SE winds. |
| Monday | Mostly sunny and mild in the morning with a slight cooling trend in the afternoon. Cooler mid-mountain where exposed to cool E-SE winds. |
Issued: 2:16 PM PST Sunday, January 13, 2019
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Sunday Evening | Freezing Level * | 9500' | 9000' | 9000' | 9000' | 9000' | 9500' | 9500' | 10000' |
| Sunday Night | Freezing Level * | 9500' | 9000' | 9000' | 9000' | 9000' | 9500' | 9500' | 10000' |
| Monday Morning | Freezing Level * | 9500' | 9000' | 9000' | 9000' | 9000' | 9500' | 9500' | 10000' |
| Monday Afternoon | Freezing Level * | 9500' | 9000' | 9000' | 9000' | 9000' | 9500' | 9000' | 7500' |
| Monday Evening | Freezing Level * | 8000' | 8000' | 7500' | 7500' | 7500' | 7500' | 7000' | 5000' |
| Monday Night | Freezing Level * | 8000' | 8000' | 3000' | 4000' | 4000' | 5000' | 6000' | 3000' |
| Tuesday Morning | Freezing Level * | 6500' | 6500' | 3000' | 4000' | 4000' | 5000' | 4500' | 3000' |
| Tuesday Afternoon | Freezing Level * | 6500' | 6500' | 4000' | 4000' | 4000' | 5000' | 4500' | 4000' |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Evening |
Freezing Level 9500' (Easterly Flow *) |
| Sunday Night |
Freezing Level 9500' (Easterly Flow *) |
| Monday Morning |
Freezing Level 9500' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level 9500' (Easterly Flow *) |
| Monday Evening |
Freezing Level 8000' (Easterly Flow *) |
| Monday Night |
Freezing Level 8000' (Easterly Flow *) |
| Tuesday Morning |
Freezing Level 6500' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 6500' (Easterly Flow *) |
| Mt. Baker | Elevation |
|---|---|
| Sunday Evening |
Freezing Level 9000' (Easterly Flow *) |
| Sunday Night |
Freezing Level 9000' (Easterly Flow *) |
| Monday Morning |
Freezing Level 9000' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level 9000' (Easterly Flow *) |
| Monday Evening |
Freezing Level 8000' (Easterly Flow *) |
| Monday Night |
Freezing Level 8000' (Easterly Flow *) |
| Tuesday Morning |
Freezing Level 6500' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 6500' (Easterly Flow *) |
| Washington Pass | Elevation |
|---|---|
| Sunday Evening |
Freezing Level 9000' (Easterly Flow *) |
| Sunday Night |
Freezing Level 9000' (Easterly Flow *) |
| Monday Morning |
Freezing Level 9000' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level 9000' (Easterly Flow *) |
| Monday Evening |
Freezing Level 7500' (Easterly Flow *) |
| Monday Night |
Freezing Level 3000' (Easterly Flow *) |
| Tuesday Morning |
Freezing Level 3000' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 4000' (Easterly Flow *) |
| Leavenworth | Elevation |
|---|---|
| Sunday Evening |
Freezing Level 9000' (Easterly Flow *) |
| Sunday Night |
Freezing Level 9000' (Easterly Flow *) |
| Monday Morning |
Freezing Level 9000' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level 9000' (Easterly Flow *) |
| Monday Evening |
Freezing Level 7500' (Easterly Flow *) |
| Monday Night |
Freezing Level 4000' (Easterly Flow *) |
| Tuesday Morning |
Freezing Level 4000' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 4000' (Easterly Flow *) |
| Stevens Pass | Elevation |
|---|---|
| Sunday Evening |
Freezing Level 9000' (Easterly Flow *) |
| Sunday Night |
Freezing Level 9000' (Easterly Flow *) |
| Monday Morning |
Freezing Level 9000' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level 9000' (Easterly Flow *) |
| Monday Evening |
Freezing Level 7500' (Easterly Flow *) |
| Monday Night |
Freezing Level 4000' (Easterly Flow *) |
| Tuesday Morning |
Freezing Level 4000' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 4000' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Sunday Evening |
Freezing Level 9500' (Easterly Flow *) |
| Sunday Night |
Freezing Level 9500' (Easterly Flow *) |
| Monday Morning |
Freezing Level 9500' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level 9500' (Easterly Flow *) |
| Monday Evening |
Freezing Level 7500' (Easterly Flow *) |
| Monday Night |
Freezing Level 5000' (Easterly Flow *) |
| Tuesday Morning |
Freezing Level 5000' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 5000' (Easterly Flow *) |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Sunday Evening |
Freezing Level 9500' (Easterly Flow *) |
| Sunday Night |
Freezing Level 9500' (Easterly Flow *) |
| Monday Morning |
Freezing Level 9500' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level 9000' (Easterly Flow *) |
| Monday Evening |
Freezing Level 7000' (Easterly Flow *) |
| Monday Night |
Freezing Level 6000' (Easterly Flow *) |
| Tuesday Morning |
Freezing Level 4500' (Easterly Flow *) |
| Tuesday Afternoon |
Freezing Level 4500' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Sunday Evening |
Freezing Level 10000' (Easterly Flow *) |
| Sunday Night |
Freezing Level 10000' (Easterly Flow *) |
| Monday Morning |
Freezing Level 10000' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level 7500' (Easterly Flow *) |
| Monday Evening |
Freezing Level 5000' (Easterly Flow *) |
| Monday Night |
Freezing Level 3000' (Easterly Flow *) |
| Tuesday Morning |
Freezing Level 3000' (Easterly Flow *) |
| Tuesday 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 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 |
|---|---|
| Sunday Night | 0 |
| Wednesday | 0 |
| Wednesday Night | 0 |
| Wednesday | 0 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Wednesday | 0 |
| Wednesday Night | 0 |
| Wednesday | 0 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Wednesday | 0 |
| Wednesday Night | 0 |
| Wednesday | 0 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Wednesday | 0 |
| Wednesday Night | 0 |
| Wednesday | 0 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Wednesday | 0 |
| Wednesday Night | 0 |
| Wednesday | 0 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Wednesday | 0 |
| Wednesday Night | 0 |
| Wednesday | 0 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Wednesday | 0 |
| Wednesday Night | 0 |
| Wednesday | 0 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Wednesday | 0 |
| Wednesday Night | 0 |
| Wednesday | 0 |
| Paradise | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Wednesday | 0 |
| Wednesday Night | 0 |
| Wednesday | 0 |
| White Pass | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Wednesday | 0 |
| Wednesday Night | 0 |
| Wednesday | 0 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Wednesday | 0 |
| Wednesday Night | 0 |
| Wednesday | 0 |
| Timberline | Precipitation Forecast |
|---|---|
| Sunday 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: 2:16 PM PST Sunday, January 13, 2019
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Sunday Evening | SE 5 - 15 | E 5 - 15 | ESE 10 - 20 | ESE 10 - 20 | ESE 10 - 20 |
| Sunday Night | E 5 - 15 | SE 0 - 10 | ESE 10 - 20 | ESE 10 - 20 | ESE 15 - 25 |
| Monday Morning | SE 0 - 10 | E 5 - 15 | ESE 10 - 20 | ESE 10 - 20 | ESE 15 - 25 |
| Monday Afternoon | SE 0 - 10 | E 5 - 15 | ESE 10 - 20 | ESE 10 - 20 | ESE 10 - 20 |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Evening | SE 5 - 15 |
| Sunday Night | E 5 - 15 |
| Monday Morning | SE 0 - 10 |
| Monday Afternoon | SE 0 - 10 |
| Mt. Baker | Elevation |
|---|---|
| Sunday Evening | E 5 - 15 |
| Sunday Night | SE 0 - 10 |
| Monday Morning | E 5 - 15 |
| Monday Afternoon | E 5 - 15 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Sunday Evening | ESE 10 - 20 |
| Sunday Night | ESE 10 - 20 |
| Monday Morning | ESE 10 - 20 |
| Monday Afternoon | ESE 10 - 20 |
| Mt. Rainier | Elevation |
|---|---|
| Sunday Evening | ESE 10 - 20 |
| Sunday Night | ESE 10 - 20 |
| Monday Morning | ESE 10 - 20 |
| Monday Afternoon | ESE 10 - 20 |
| Mt. Hood | Elevation |
|---|---|
| Sunday Evening | ESE 10 - 20 |
| Sunday Night | ESE 15 - 25 |
| Monday Morning | ESE 15 - 25 |
| Monday Afternoon | ESE 10 - 20 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Sunday Evening | SE 5 - 15 |
| Sunday Night | E 5 - 15 |
| Monday Morning | SE 0 - 10 |
| Monday Afternoon | SE 0 - 10 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Evening | E 5 - 15 |
| Sunday Night | SE 0 - 10 |
| Monday Morning | E 5 - 15 |
| Monday Afternoon | E 5 - 15 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Evening | ESE 10 - 20 |
| Sunday Night | ESE 10 - 20 |
| Monday Morning | ESE 10 - 20 |
| Monday Afternoon | ESE 10 - 20 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Evening | ESE 10 - 20 |
| Sunday Night | ESE 10 - 20 |
| Monday Morning | ESE 10 - 20 |
| Monday Afternoon | ESE 10 - 20 |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Evening | ESE 10 - 20 |
| Sunday Night | ESE 15 - 25 |
| Monday Morning | ESE 15 - 25 |
| Monday Afternoon | ESE 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 Evening | SW 10 - 20 | SE 5 - 15 | SE 5 - 15 | SE 0 - 10 | ESE 15 - 25 |
| Sunday Night | S 5 - 15 | S 5 - 15 | SE 10 - 20 | SE 10 - 20 | SE 20 - 30 |
| Monday Morning | S 5 - 15 | S 5 - 15 | SE 10 - 20 | SE 10 - 20 | SE 20 - 30 |
| Monday Afternoon | S 5 - 15 | S 5 - 15 | SE 10 - 20 | SE 10 - 20 | SE 20 - 30 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Evening | SW 10 - 20 |
| Sunday Night | S 5 - 15 |
| Monday Morning | S 5 - 15 |
| Monday Afternoon | S 5 - 15 |
| Washington Pass | Direction - Speed |
|---|---|
| Sunday Evening | SE 5 - 15 |
| Sunday Night | S 5 - 15 |
| Monday Morning | S 5 - 15 |
| Monday Afternoon | S 5 - 15 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Evening | SE 5 - 15 |
| Sunday Night | SE 10 - 20 |
| Monday Morning | SE 10 - 20 |
| Monday Afternoon | SE 10 - 20 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Evening | SE 0 - 10 |
| Sunday Night | SE 10 - 20 |
| Monday Morning | SE 10 - 20 |
| Monday Afternoon | SE 10 - 20 |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Evening | ESE 15 - 25 |
| Sunday Night | SE 20 - 30 |
| Monday Morning | SE 20 - 30 |
| Monday Afternoon | SE 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.
Issued: 2:16 PM PST Sunday, January 13, 2019
Extended Weather Synopsis for Wednesday night through Wednesday
Precipitation rotating up from the open trough over California shouldn't reach the area until Wednesday morning. Generally light rain and snow is expected with this first round as it traverses from south to north across the area. A stronger frontal system may impact the area Wednesday night and Thursday with southerly flow aloft favoring the volcanoes, Olympics and east slopes of the Cascades for more significant precipitation than the Cascade Passes. However, significant forecast model differences continue as we transition from dry weather to a more active weather pattern heading into next weekend.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Tuesday Night | Freezing Level | 4000' - 5000' | 2500' - 3500' | 2500' - 3500' | * |
| Wednesday | Snow Level | 3500' - 4500' | 2500' - 3500' | 3500' - 4500' | * |
| Wednesday Night | Snow Level | 3000' - 4000' | 2500' - 3500' | 3500' - 4500' | * |
| Thursday | Snow Level | 3500' - 4500' | 3000' - 4000' | 3500' - 4500' |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Night |
Freezing Level 4000' - 5000' (Easterly Flow *) |
| Wednesday |
Snow Level 3500' - 4500' (Easterly Flow *) |
| Wednesday Night |
Snow Level 3000' - 4000' (Easterly Flow *) |
| Thursday |
Snow Level 3500' - 4500' |
| Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Night |
Freezing Level 2500' - 3500' (Easterly Flow *) |
| Wednesday |
Snow Level 2500' - 3500' (Easterly Flow *) |
| Wednesday Night |
Snow Level 2500' - 3500' (Easterly Flow *) |
| Thursday |
Snow Level 3000' - 4000' |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Night |
Freezing Level 2500' - 3500' (Easterly Flow *) |
| Wednesday |
Snow Level 3500' - 4500' (Easterly Flow *) |
| Wednesday Night |
Snow Level 3500' - 4500' (Easterly Flow *) |
| Thursday |
Snow Level 3500' - 4500' |
* 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 13, 2019
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