Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Weather Synopsis for Wednesday night through Sunday
A closed upper low off the Oregon/California coast-line is rotating a frontal band up through Oregon today and spreading high cloud into Washington State from the south. Impressive offshore gradients for late March with the low pressure offshore and higher pressure inland is causing moderate east-southeast winds up to crest level from about Stevens Pass and south to Mt. Hood. Offshore winds should relax later this afternoon and further overnight. Light rain and snow will impact the Mt. Hood area with a few inches of snow possible. As the frontal band lifts north overnight, it should shear and break up...resulting in generally light accumulations elsewhere. Some upslope enhancement may help squeeze out an additional inch or two along the east slopes of the Cascades through Thursday morning.
The closed low will drift closer to the Pacific Northwest on Thursday. Unstable atmospheric conditions will support mountain showers in the afternoon for all areas. Besides afternoon convective clouds building over the mountains, southerly flow may spread some high clouds up from the south for periods of filtered sunshine. The south Washington Cascades and Mt. Hood have the best chance of more moderate showers with the slight chance of a thunderstorm as well. Friday will be nearly a repeat as the weakening upper low drifts ever closer to the PNW coast, increasing the chances for afternoon clouds and showers over the mountains.
Weather Forecast
Hurricane Ridge
| Wednesday Night | Increasing high and mid clouds overnight, slight chance of rain or snow late. |
| Thursday | Mostly cloudy with a chance of afternoon showers. |
Mt. Baker
| Wednesday Night | Increasing high and mid clouds overnight, slight chance of rain or snow late. |
| Thursday | Mostly cloudy with scattered afternoon showers. |
Washington Pass and Leavenworth
| Wednesday Night | Increasing clouds, light rain and snow developing overnight. Moderate easterly winds at crest level. |
| Thursday | Mostly cloudy with scattered afternoon showers. |
Stevens and Snoqualmie Pass
| Wednesday Night | Increasing clouds overnight with periods of light rain and snow. |
| Thursday | Mostly cloudy with scattered afternoon showers. |
Mt. Rainier, Crystal and White Pass
| Wednesday Night | Cloudy with periods of light rain and snow. |
| Thursday | Mostly cloudy with scattered afternoon showers. Slight chance of an afternoon thunderstorm. |
Mt. Hood
| Wednesday Night | Cloudy with periods of light rain and snow. |
| Thursday | Mostly cloudy with scattered afternoon showers. Slight chance of an afternoon thunderstorm. |
Issued: 2:34 PM PDT Wednesday, March 27, 2019
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Wednesday Evening | Snow Level * | 4500' | 4500' | 4500' | 4500' | 4500' | 4500' | 4000' | 4000' |
| Wednesday Night | Snow Level | 3500' | 3500' | 3500' | 3500' | 3500' | 3500' | 3500' | 3500' |
| Thursday Morning | Snow Level | 3500' | 3500' | 3500' | 3500' | 3500' | 3500' | 3500' | 3500' |
| Thursday Afternoon | Snow Level | 4500' | 5000' | 5000' | 5000' | 5000' | 5000' | 5000' | 5000' |
| Thursday Evening | Snow Level | 4000' | 4000' | 4000' | 4000' | 4000' | 4000' | 4000' | 4000' |
| Thursday Night | Snow Level | 3500' | 3500' | 3500' | 3500' | 3500' | 3500' | 3500' | 3500' |
| Friday Morning | Snow Level | 3500' | 3500' | 3500' | 3500' | 3500' | 3500' | 3500' | 3500' |
| Friday Afternoon | Snow Level | 5000' | 6000' | 6000' | 6000' | 6000' | 6000' | 6000' | 5500' |
| Hurricane Ridge | Elevation |
|---|---|
| Wednesday Evening |
Snow Level 4500' (Easterly Flow *) |
| Wednesday Night |
Snow Level 3500' |
| Thursday Morning |
Snow Level 3500' |
| Thursday Afternoon |
Snow Level 4500' |
| Thursday Evening |
Snow Level 4000' |
| Thursday Night |
Snow Level 3500' |
| Friday Morning |
Snow Level 3500' |
| Friday Afternoon |
Snow Level 5000' |
| Mt. Baker | Elevation |
|---|---|
| Wednesday Evening |
Snow Level 4500' (Easterly Flow *) |
| Wednesday Night |
Snow Level 3500' |
| Thursday Morning |
Snow Level 3500' |
| Thursday Afternoon |
Snow Level 5000' |
| Thursday Evening |
Snow Level 4000' |
| Thursday Night |
Snow Level 3500' |
| Friday Morning |
Snow Level 3500' |
| Friday Afternoon |
Snow Level 6000' |
| Washington Pass | Elevation |
|---|---|
| Wednesday Evening |
Snow Level 4500' (Easterly Flow *) |
| Wednesday Night |
Snow Level 3500' |
| Thursday Morning |
Snow Level 3500' |
| Thursday Afternoon |
Snow Level 5000' |
| Thursday Evening |
Snow Level 4000' |
| Thursday Night |
Snow Level 3500' |
| Friday Morning |
Snow Level 3500' |
| Friday Afternoon |
Snow Level 6000' |
| Leavenworth | Elevation |
|---|---|
| Wednesday Evening |
Snow Level 4500' (Easterly Flow *) |
| Wednesday Night |
Snow Level 3500' |
| Thursday Morning |
Snow Level 3500' |
| Thursday Afternoon |
Snow Level 5000' |
| Thursday Evening |
Snow Level 4000' |
| Thursday Night |
Snow Level 3500' |
| Friday Morning |
Snow Level 3500' |
| Friday Afternoon |
Snow Level 6000' |
| Stevens Pass | Elevation |
|---|---|
| Wednesday Evening |
Snow Level 4500' (Easterly Flow *) |
| Wednesday Night |
Snow Level 3500' |
| Thursday Morning |
Snow Level 3500' |
| Thursday Afternoon |
Snow Level 5000' |
| Thursday Evening |
Snow Level 4000' |
| Thursday Night |
Snow Level 3500' |
| Friday Morning |
Snow Level 3500' |
| Friday Afternoon |
Snow Level 6000' |
| Snoqualmie Pass | Elevation |
|---|---|
| Wednesday Evening |
Snow Level 4500' (Easterly Flow *) |
| Wednesday Night |
Snow Level 3500' |
| Thursday Morning |
Snow Level 3500' |
| Thursday Afternoon |
Snow Level 5000' |
| Thursday Evening |
Snow Level 4000' |
| Thursday Night |
Snow Level 3500' |
| Friday Morning |
Snow Level 3500' |
| Friday Afternoon |
Snow Level 6000' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Wednesday Evening |
Snow Level 4000' (Easterly Flow *) |
| Wednesday Night |
Snow Level 3500' |
| Thursday Morning |
Snow Level 3500' |
| Thursday Afternoon |
Snow Level 5000' |
| Thursday Evening |
Snow Level 4000' |
| Thursday Night |
Snow Level 3500' |
| Friday Morning |
Snow Level 3500' |
| Friday Afternoon |
Snow Level 6000' |
| Mt. Hood | Elevation |
|---|---|
| Wednesday Evening |
Snow Level 4000' (Easterly Flow *) |
| Wednesday Night |
Snow Level 3500' |
| Thursday Morning |
Snow Level 3500' |
| Thursday Afternoon |
Snow Level 5000' |
| Thursday Evening |
Snow Level 4000' |
| Thursday Night |
Snow Level 3500' |
| Friday Morning |
Snow Level 3500' |
| Friday Afternoon |
Snow Level 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.
Precipitation Forecast
| Wednesday Night | Sunday | Sunday Night | Sunday | |
|---|---|---|---|---|
| 4 pm - 4 am | 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | LT 0.10 | LT 0.10 | 0 | LT 0.10 |
| Mt Baker Ski Area | 0 | LT 0.10 | 0 | LT 0.10 |
| Washington Pass | LT 0.10 | LT 0.10 | 0 | LT 0.10 |
| Leavenworth | LT 0.10 | 0 | 0 | LT 0.10 |
| Stevens Pass | LT 0.10 | LT 0.10 | 0 | LT 0.10 |
| Snoqualmie Pass | LT 0.10 | LT 0.10 | 0 | LT 0.10 |
| Mission Ridge | 0.25 | 0 | 0 | LT 0.10 |
| Crystal Mt | LT 0.10 | LT 0.10 | LT 0.10 | LT 0.10 |
| Paradise | LT 0.10 | LT 0.10 | LT 0.10 | LT 0.10 |
| White Pass | LT 0.10 | LT 0.10 | LT 0.10 | LT 0.10 |
| Mt Hood Meadows | LT 0.10 | LT 0.10 | LT 0.10 | LT 0.10 |
| Timberline | LT 0.10 | LT 0.10 | LT 0.10 | LT 0.10 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Wednesday Night | LT 0.10 |
| Sunday | LT 0.10 |
| Sunday Night | 0 |
| Sunday | LT 0.10 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Wednesday Night | 0 |
| Sunday | LT 0.10 |
| Sunday Night | 0 |
| Sunday | LT 0.10 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Wednesday Night | LT 0.10 |
| Sunday | LT 0.10 |
| Sunday Night | 0 |
| Sunday | LT 0.10 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Wednesday Night | LT 0.10 |
| Sunday | 0 |
| Sunday Night | 0 |
| Sunday | LT 0.10 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Wednesday Night | LT 0.10 |
| Sunday | LT 0.10 |
| Sunday Night | 0 |
| Sunday | LT 0.10 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Wednesday Night | LT 0.10 |
| Sunday | LT 0.10 |
| Sunday Night | 0 |
| Sunday | LT 0.10 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Wednesday Night | 0.25 |
| Sunday | 0 |
| Sunday Night | 0 |
| Sunday | LT 0.10 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Wednesday Night | LT 0.10 |
| Sunday | LT 0.10 |
| Sunday Night | LT 0.10 |
| Sunday | LT 0.10 |
| Paradise | Precipitation Forecast |
|---|---|
| Wednesday Night | LT 0.10 |
| Sunday | LT 0.10 |
| Sunday Night | LT 0.10 |
| Sunday | LT 0.10 |
| White Pass | Precipitation Forecast |
|---|---|
| Wednesday Night | LT 0.10 |
| Sunday | LT 0.10 |
| Sunday Night | LT 0.10 |
| Sunday | LT 0.10 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Wednesday Night | LT 0.10 |
| Sunday | LT 0.10 |
| Sunday Night | LT 0.10 |
| Sunday | LT 0.10 |
| Timberline | Precipitation Forecast |
|---|---|
| Wednesday Night | LT 0.10 |
| Sunday | LT 0.10 |
| Sunday Night | LT 0.10 |
| Sunday | 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: 2:34 PM PDT Wednesday, March 27, 2019
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Wednesday Evening | SE 5 - 15 | E 0 - 10 | E 10 - 20 | E 5 - 15 | VAR 0 - 10 |
| Wednesday Night | S 0 - 10 | VAR 0 - 10 | SW 5 - 15 | SW 0 - 10 | S 0 - 10 |
| Thursday Morning | S 0 - 10 | VAR 0 - 10 | W 0 - 10 | SW 0 - 10 | S 0 - 10 |
| Thursday Afternoon | S 0 - 10 | VAR 0 - 10 | VAR 0 - 10 | VAR 0 - 10 | E 0 - 10 |
| Hurricane Ridge | Elevation |
|---|---|
| Wednesday Evening | SE 5 - 15 |
| Wednesday Night | S 0 - 10 |
| Thursday Morning | S 0 - 10 |
| Thursday Afternoon | S 0 - 10 |
| Mt. Baker | Elevation |
|---|---|
| Wednesday Evening | E 0 - 10 |
| Wednesday Night | VAR 0 - 10 |
| Thursday Morning | VAR 0 - 10 |
| Thursday Afternoon | VAR 0 - 10 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Wednesday Evening | E 10 - 20 |
| Wednesday Night | SW 5 - 15 |
| Thursday Morning | W 0 - 10 |
| Thursday Afternoon | VAR 0 - 10 |
| Mt. Rainier | Elevation |
|---|---|
| Wednesday Evening | E 5 - 15 |
| Wednesday Night | SW 0 - 10 |
| Thursday Morning | SW 0 - 10 |
| Thursday Afternoon | VAR 0 - 10 |
| Mt. Hood | Elevation |
|---|---|
| Wednesday Evening | VAR 0 - 10 |
| Wednesday Night | S 0 - 10 |
| Thursday Morning | S 0 - 10 |
| Thursday Afternoon | E 0 - 10 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Wednesday Evening | SE 5 - 15 |
| Wednesday Night | S 0 - 10 |
| Thursday Morning | S 0 - 10 |
| Thursday Afternoon | S 0 - 10 |
| Mt. Baker | Direction - Speed |
|---|---|
| Wednesday Evening | E 0 - 10 |
| Wednesday Night | VAR 0 - 10 |
| Thursday Morning | VAR 0 - 10 |
| Thursday Afternoon | VAR 0 - 10 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Wednesday Evening | E 10 - 20 |
| Wednesday Night | SW 5 - 15 |
| Thursday Morning | W 0 - 10 |
| Thursday Afternoon | VAR 0 - 10 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Wednesday Evening | E 5 - 15 |
| Wednesday Night | SW 0 - 10 |
| Thursday Morning | SW 0 - 10 |
| Thursday Afternoon | VAR 0 - 10 |
| Mt. Hood | Direction - Speed |
|---|---|
| Wednesday Evening | VAR 0 - 10 |
| Wednesday Night | S 0 - 10 |
| Thursday Morning | S 0 - 10 |
| Thursday Afternoon | E 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 | |
|---|---|---|---|---|---|
| Wednesday Evening | E 5 - 15 | E 20 - 30 | E 15 - 25 | SE 10 - 20 | SW 15 - 25 |
| Wednesday Night | NE 5 - 15 | E 15 - 25 | S 10 - 20 | SW 5 - 15 | SW 5 - 15 |
| Thursday Morning | E 0 - 10 | SE 5 - 15 | WSW 5 - 15 | SW 5 - 15 | SSW 10 - 20 |
| Thursday Afternoon | S 0 - 10 | S 0 - 10 | SW 0 - 10 | SW 0 - 10 | S 0 - 10 |
| Mt. Baker | Direction - Speed |
|---|---|
| Wednesday Evening | E 5 - 15 |
| Wednesday Night | NE 5 - 15 |
| Thursday Morning | E 0 - 10 |
| Thursday Afternoon | S 0 - 10 |
| Washington Pass | Direction - Speed |
|---|---|
| Wednesday Evening | E 20 - 30 |
| Wednesday Night | E 15 - 25 |
| Thursday Morning | SE 5 - 15 |
| Thursday Afternoon | S 0 - 10 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Wednesday Evening | E 15 - 25 |
| Wednesday Night | S 10 - 20 |
| Thursday Morning | WSW 5 - 15 |
| Thursday Afternoon | SW 0 - 10 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Wednesday Evening | SE 10 - 20 |
| Wednesday Night | SW 5 - 15 |
| Thursday Morning | SW 5 - 15 |
| Thursday Afternoon | SW 0 - 10 |
| Mt. Hood | Direction - Speed |
|---|---|
| Wednesday Evening | SW 15 - 25 |
| Wednesday Night | SW 5 - 15 |
| Thursday Morning | SSW 10 - 20 |
| Thursday Afternoon | S 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.
Issued: 2:34 PM PDT Wednesday, March 27, 2019
Extended Weather Synopsis for Sunday night through Sunday
The low will eject and become an open shortwave over the area on Saturday. This should increase the chances for more widespread showers on Saturday afternoon. Forecast models are starting to indicate a shift to more westerly flow on Sunday with a weak upper level disturbance moving through and once again...a chance of showers over much the forecast area.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Friday Night | Snow Level | 4000' - 5000' | 4000' - 5000' | 4000' - 5000' | |
| Saturday | Snow Level | 5000' - 6000' | 5000' - 6000' | 5000' - 6000' | |
| Saturday Night | Snow Level | 5000' - 6000' | 5000' - 6000' | 5000' - 6000' | |
| Sunday | Snow Level | 5500' - 6500' | 5500' - 6500' | 5500' - 6500' |
| Mt. Baker | Elevation |
|---|---|
| Friday Night |
Snow Level 4000' - 5000' |
| Saturday |
Snow Level 5000' - 6000' |
| Saturday Night |
Snow Level 5000' - 6000' |
| Sunday |
Snow Level 5500' - 6500' |
| Snoqualmie Pass | Elevation |
|---|---|
| Friday Night |
Snow Level 4000' - 5000' |
| Saturday |
Snow Level 5000' - 6000' |
| Saturday Night |
Snow Level 5000' - 6000' |
| Sunday |
Snow Level 5500' - 6500' |
| Mt. Hood | Elevation |
|---|---|
| Friday Night |
Snow Level 4000' - 5000' |
| Saturday |
Snow Level 5000' - 6000' |
| Saturday Night |
Snow Level 5000' - 6000' |
| Sunday |
Snow Level 5500' - 6500' |
* 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 27, 2019
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