Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Weather Synopsis for Thursday night through Thursday
An upper low passing to our south overnight will continue spreading a variable amount of high clouds over the region. High clouds should thin Friday morning and we should once again see at least partly sunny skies and continued warmth for the first half of Friday. A N-S oriented frontal band extending from a negatively tilted trough will approach the Pacific coast during the day, spreading light precipitation inland for the Olympics and Mt. Hood in the afternoon. Scattered pre-frontal showers may develop over the west slopes of the Cascades by late afternoon. All areas will see an increase in afternoon cloud cover.
The frontal band will weaken as it lifts through Friday night and post-frontal showers do not look impressive, with only moderate precipitation expected in the Mt. Baker area. Snow levels will lower dramatically behind the front through Saturday morning and we will see widespread below freezing temperatures for the first time in nearly a week (wow!).
A weak upper level trough and onshore flow will keep light and scattered mountain showers in the forecast for the afternoon on Saturday with snow levels in the 4000-4500 ft range. The east slopes of the Cascades should see more sun and less shower activity versus the west slopes.
Weather Forecast
Hurricane Ridge
| Thursday Night | Partly to mostly cloudy with high clouds. Mild. |
| Friday | Partly sunny in the morning and mild. Becoming cloudy in the afternoon with light rain and snow developing. Winds increasing in the afternoon. |
Mt. Baker
| Thursday Night | Partly to mostly cloudy with high clouds. Mild. |
| Friday | Partly sunny and warm. Becoming mostly cloudy in the afternoon with a slight chance of showers late. Winds increasing late afternoon and evening. |
Washington Pass and Leavenworth
| Thursday Night | Partly to mostly cloudy with high clouds. Mild. |
| Friday | Partly sunny and warm. Becoming mostly cloudy in the afternoon. |
Stevens and Snoqualmie Pass
| Thursday Night | Partly to mostly cloudy with high clouds. Mild. Light west wind in the Passes. |
| Friday | Partly sunny and warm. Becoming mostly cloudy in the afternoon with a slight chance of showers late. Light wind in the Passes becoming west in the afternoon. |
Mt. Rainier, Crystal and White Pass
| Thursday Night | Partly to mostly cloudy with high clouds. Mild. |
| Friday | Partly sunny and warm. Becoming mostly cloudy in the afternoon with a chance of showers. |
Mt. Hood
| Thursday Night | Cloudy in the early evening, then partly to mostly cloudy with high clouds. Mild. |
| Friday | Partly sunny in the morning becoming cloudy late morning with light rain and snow developing in the afternoon. |
Issued: 2:30 PM PDT Thursday, March 21, 2019
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Thursday Evening | Freezing Level | 7500' | 8500' | 8500' | 8500' | 8500' | 8000' | 8000' | 7000' |
| Thursday Night | Freezing Level | 7000' | 7000' | 8000' | 8000' | 8000' | 8000' | 7500' | 7000' |
| Friday Morning | Freezing Level | 7000' | 7000' | 8000' | 8000' | 8000' | 8000' | 7500' | 6500' |
| Friday Afternoon | Snow Level | 5500' | 6500' | 6500' | 6500' | 6500' | 6500' | 6000' | 5500' |
| Friday Evening | Snow Level | 5000' | 5500' | 6500' | 6000' | 5500' | 5500' | 5000' | 5000' |
| Friday Night | Snow Level | 4000' | 4000' | 4000' | 4000' | 4000' | 4000' | 4000' | 4000' |
| Saturday Morning | Snow Level | 3500' | 3500' | 3500' | 3500' | 3500' | 3500' | 3500' | 3500' |
| Saturday Afternoon | Snow Level | 4000' | 4000' | 4500' | 4500' | 4000' | 4000' | 4500' | 4500' |
| Hurricane Ridge | Elevation |
|---|---|
| Thursday Evening |
Freezing Level 7500' |
| Thursday Night |
Freezing Level 7000' |
| Friday Morning |
Freezing Level 7000' |
| Friday Afternoon |
Snow Level 5500' |
| Friday Evening |
Snow Level 5000' |
| Friday Night |
Snow Level 4000' |
| Saturday Morning |
Snow Level 3500' |
| Saturday Afternoon |
Snow Level 4000' |
| Mt. Baker | Elevation |
|---|---|
| Thursday Evening |
Freezing Level 8500' |
| Thursday Night |
Freezing Level 7000' |
| Friday Morning |
Freezing Level 7000' |
| Friday Afternoon |
Snow Level 6500' |
| Friday Evening |
Snow Level 5500' |
| Friday Night |
Snow Level 4000' |
| Saturday Morning |
Snow Level 3500' |
| Saturday Afternoon |
Snow Level 4000' |
| Washington Pass | Elevation |
|---|---|
| Thursday Evening |
Freezing Level 8500' |
| Thursday Night |
Freezing Level 8000' |
| Friday Morning |
Freezing Level 8000' |
| Friday Afternoon |
Snow Level 6500' |
| Friday Evening |
Snow Level 6500' |
| Friday Night |
Snow Level 4000' |
| Saturday Morning |
Snow Level 3500' |
| Saturday Afternoon |
Snow Level 4500' |
| Leavenworth | Elevation |
|---|---|
| Thursday Evening |
Freezing Level 8500' |
| Thursday Night |
Freezing Level 8000' |
| Friday Morning |
Freezing Level 8000' |
| Friday Afternoon |
Snow Level 6500' |
| Friday Evening |
Snow Level 6000' |
| Friday Night |
Snow Level 4000' |
| Saturday Morning |
Snow Level 3500' |
| Saturday Afternoon |
Snow Level 4500' |
| Stevens Pass | Elevation |
|---|---|
| Thursday Evening |
Freezing Level 8500' |
| Thursday Night |
Freezing Level 8000' |
| Friday Morning |
Freezing Level 8000' |
| Friday Afternoon |
Snow Level 6500' |
| Friday Evening |
Snow Level 5500' |
| Friday Night |
Snow Level 4000' |
| Saturday Morning |
Snow Level 3500' |
| Saturday Afternoon |
Snow Level 4000' |
| Snoqualmie Pass | Elevation |
|---|---|
| Thursday Evening |
Freezing Level 8000' |
| Thursday Night |
Freezing Level 8000' |
| Friday Morning |
Freezing Level 8000' |
| Friday Afternoon |
Snow Level 6500' |
| Friday Evening |
Snow Level 5500' |
| Friday Night |
Snow Level 4000' |
| Saturday Morning |
Snow Level 3500' |
| Saturday Afternoon |
Snow Level 4000' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Thursday Evening |
Freezing Level 8000' |
| Thursday Night |
Freezing Level 7500' |
| Friday Morning |
Freezing Level 7500' |
| Friday Afternoon |
Snow Level 6000' |
| Friday Evening |
Snow Level 5000' |
| Friday Night |
Snow Level 4000' |
| Saturday Morning |
Snow Level 3500' |
| Saturday Afternoon |
Snow Level 4500' |
| Mt. Hood | Elevation |
|---|---|
| Thursday Evening |
Freezing Level 7000' |
| Thursday Night |
Freezing Level 7000' |
| Friday Morning |
Freezing Level 6500' |
| Friday Afternoon |
Snow Level 5500' |
| Friday Evening |
Snow Level 5000' |
| Friday Night |
Snow Level 4000' |
| Saturday Morning |
Snow Level 3500' |
| Saturday Afternoon |
Snow Level 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.
Precipitation Forecast
| Thursday Night | Thursday | Thursday Night | Thursday | |
|---|---|---|---|---|
| 4 pm - 4 am | 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | 0 | LT 0.10 | LT 0.10 | LT 0.10 |
| Mt Baker Ski Area | 0 | LT 0.10 | 0.50 | LT 0.25 |
| Washington Pass | 0 | 0 | LT 0.25 | 0 |
| Leavenworth | 0 | 0 | 0 | 0 |
| Stevens Pass | 0 | LT 0.10 | LT 0.25 | LT 0.10 |
| Snoqualmie Pass | 0 | LT 0.10 | 0.25 | LT 0.10 |
| Mission Ridge | 0 | LT 0.10 | LT 0.10 | 0 |
| Crystal Mt | 0 | LT 0.10 | LT 0.10 | LT 0.10 |
| Paradise | 0 | LT 0.10 | 0.25 | LT 0.10 |
| White Pass | 0 | LT 0.10 | LT 0.10 | LT 0.10 |
| Mt Hood Meadows | 0 | LT 0.25 | LT 0.25 | LT 0.10 |
| Timberline | 0 | LT 0.25 | LT 0.25 | LT 0.10 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Thursday Night | 0 |
| Thursday | LT 0.10 |
| Thursday Night | LT 0.10 |
| Thursday | LT 0.10 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Thursday Night | 0 |
| Thursday | LT 0.10 |
| Thursday Night | 0.50 |
| Thursday | LT 0.25 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Thursday Night | 0 |
| Thursday | 0 |
| Thursday Night | LT 0.25 |
| Thursday | 0 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Thursday Night | 0 |
| Thursday | 0 |
| Thursday Night | 0 |
| Thursday | 0 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Thursday Night | 0 |
| Thursday | LT 0.10 |
| Thursday Night | LT 0.25 |
| Thursday | LT 0.10 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Thursday Night | 0 |
| Thursday | LT 0.10 |
| Thursday Night | 0.25 |
| Thursday | LT 0.10 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Thursday Night | 0 |
| Thursday | LT 0.10 |
| Thursday Night | LT 0.10 |
| Thursday | 0 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Thursday Night | 0 |
| Thursday | LT 0.10 |
| Thursday Night | LT 0.10 |
| Thursday | LT 0.10 |
| Paradise | Precipitation Forecast |
|---|---|
| Thursday Night | 0 |
| Thursday | LT 0.10 |
| Thursday Night | 0.25 |
| Thursday | LT 0.10 |
| White Pass | Precipitation Forecast |
|---|---|
| Thursday Night | 0 |
| Thursday | LT 0.10 |
| Thursday Night | LT 0.10 |
| Thursday | LT 0.10 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Thursday Night | 0 |
| Thursday | LT 0.25 |
| Thursday Night | LT 0.25 |
| Thursday | LT 0.10 |
| Timberline | Precipitation Forecast |
|---|---|
| Thursday Night | 0 |
| Thursday | LT 0.25 |
| Thursday Night | LT 0.25 |
| Thursday | LT 0.10 |
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: 2:30 PM PDT Thursday, March 21, 2019
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Thursday Evening | S 0 - 10 | SW 0 - 10 | W 0 - 10 | W 0 - 10 | W 0 - 10 |
| Thursday Night | S 0 - 10 | SW 0 - 10 | W 0 - 10 | W 0 - 10 | SW 0 - 10 |
| Friday Morning | S 5 - 15 | S 0 - 10 | VAR 0 - 10 | S 0 - 10 | S 0 - 10 |
| Friday Afternoon | S 15 - 25 | SW 10 - 20 | SSW 5 - 15 | S 10 - 20 | SW 10 - 20 |
| Hurricane Ridge | Elevation |
|---|---|
| Thursday Evening | S 0 - 10 |
| Thursday Night | S 0 - 10 |
| Friday Morning | S 5 - 15 |
| Friday Afternoon | S 15 - 25 |
| Mt. Baker | Elevation |
|---|---|
| Thursday Evening | SW 0 - 10 |
| Thursday Night | SW 0 - 10 |
| Friday Morning | S 0 - 10 |
| Friday Afternoon | SW 10 - 20 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Thursday Evening | W 0 - 10 |
| Thursday Night | W 0 - 10 |
| Friday Morning | VAR 0 - 10 |
| Friday Afternoon | SSW 5 - 15 |
| Mt. Rainier | Elevation |
|---|---|
| Thursday Evening | W 0 - 10 |
| Thursday Night | W 0 - 10 |
| Friday Morning | S 0 - 10 |
| Friday Afternoon | S 10 - 20 |
| Mt. Hood | Elevation |
|---|---|
| Thursday Evening | W 0 - 10 |
| Thursday Night | SW 0 - 10 |
| Friday Morning | S 0 - 10 |
| Friday Afternoon | SW 10 - 20 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Thursday Evening | S 0 - 10 |
| Thursday Night | S 0 - 10 |
| Friday Morning | S 5 - 15 |
| Friday Afternoon | S 15 - 25 |
| Mt. Baker | Direction - Speed |
|---|---|
| Thursday Evening | SW 0 - 10 |
| Thursday Night | SW 0 - 10 |
| Friday Morning | S 0 - 10 |
| Friday Afternoon | SW 10 - 20 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Thursday Evening | W 0 - 10 |
| Thursday Night | W 0 - 10 |
| Friday Morning | VAR 0 - 10 |
| Friday Afternoon | SSW 5 - 15 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Thursday Evening | W 0 - 10 |
| Thursday Night | W 0 - 10 |
| Friday Morning | S 0 - 10 |
| Friday Afternoon | S 10 - 20 |
| Mt. Hood | Direction - Speed |
|---|---|
| Thursday Evening | W 0 - 10 |
| Thursday Night | SW 0 - 10 |
| Friday Morning | S 0 - 10 |
| Friday Afternoon | SW 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 | |
|---|---|---|---|---|---|
| Thursday Evening | S 0 - 10 | S 0 - 10 | SE 10 - 20 | SE 10 - 20 | ESE 5 - 15 |
| Thursday Night | S 5 - 15 | S 5 - 15 | SE 10 - 20 | ESE 10 - 20 | S 5 - 15 |
| Friday Morning | SE 10 - 20 | SSE 10 - 20 | SE 15 - 25 | SSE 10 - 20 | S 10 - 20 |
| Friday Afternoon | S 20 - 30 | S 10 - 20 | S 15 - 25 | S 20 - 30 | SW 20 - 30 |
| Mt. Baker | Direction - Speed |
|---|---|
| Thursday Evening | S 0 - 10 |
| Thursday Night | S 5 - 15 |
| Friday Morning | SE 10 - 20 |
| Friday Afternoon | S 20 - 30 |
| Washington Pass | Direction - Speed |
|---|---|
| Thursday Evening | S 0 - 10 |
| Thursday Night | S 5 - 15 |
| Friday Morning | SSE 10 - 20 |
| Friday Afternoon | S 10 - 20 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Thursday Evening | SE 10 - 20 |
| Thursday Night | SE 10 - 20 |
| Friday Morning | SE 15 - 25 |
| Friday Afternoon | S 15 - 25 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Thursday Evening | SE 10 - 20 |
| Thursday Night | ESE 10 - 20 |
| Friday Morning | SSE 10 - 20 |
| Friday Afternoon | S 20 - 30 |
| Mt. Hood | Direction - Speed |
|---|---|
| Thursday Evening | ESE 5 - 15 |
| Thursday Night | S 5 - 15 |
| Friday Morning | S 10 - 20 |
| Friday Afternoon | SW 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: 2:30 PM PDT Thursday, March 21, 2019
Extended Weather Synopsis for Thursday night through Thursday
The same upper level trough will be slow to exit on Sunday. Atmospheric conditions look marginally unstable so once again, isolated mountain showers are possible in the afternoon. Weak upper level ridging will move across the area Sunday night. An upper low positioned well off the West Coast should lift a frontal band up from the south on Monday. Areas favored by southerly flow may see a period of moderate precipitation Monday or Monday night.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Saturday Night | Freezing Level | 3000' - 4000' | 3000' - 4000' | 3000' - 4000' | |
| Sunday | Snow Level | 3500' - 4500' | 4500' - 5500' | 4500' - 5500' | |
| Sunday Night | Snow Level | 4000' - 5000' | 4500' - 5500' | 4500' - 5500' | |
| Monday | Snow Level | 4500' - 5500' | 4000' - 5000' | 3500' - 4500' |
| Mt. Baker | Elevation |
|---|---|
| Saturday Night |
Freezing Level 3000' - 4000' |
| Sunday |
Snow Level 3500' - 4500' |
| Sunday Night |
Snow Level 4000' - 5000' |
| Monday |
Snow Level 4500' - 5500' |
| Snoqualmie Pass | Elevation |
|---|---|
| Saturday Night |
Freezing Level 3000' - 4000' |
| Sunday |
Snow Level 4500' - 5500' |
| Sunday Night |
Snow Level 4500' - 5500' |
| Monday |
Snow Level 4000' - 5000' |
| Mt. Hood | Elevation |
|---|---|
| Saturday Night |
Freezing Level 3000' - 4000' |
| Sunday |
Snow Level 4500' - 5500' |
| Sunday Night |
Snow Level 4500' - 5500' |
| Monday |
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 Mar 21, 2019
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