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
After a gorgeous Sunday, an approaching Pacific frontal system will begin to spread some high clouds into the northern half of Washington state overnight. The high overcast will be slow to fill in for areas south of Stevens Pass through Monday afternoon as the trough digs offshore, slowing the front's eastern progress. Ahead of this frontal system, there should be a brief but noticeable warming trend as warmer air is advected into the region. Winds will also pick up noticeably for the Mt. Baker area Monday afternoon.
Snow levels should drop quickly with the onset of precipitation Monday afternoon for the Olympics and north Cascades and Monday evening for areas further south. Precipitation should increase further Monday night with the cold front dragging through the Cascades during the early morning hours. On Tuesday, post-frontal showers in W-NW flow will add additional snow accumulations for the west slopes of the Cascades and Mt. Hood with one or more convergence zones forming for locally heavier amounts. West-SW gusty winds should be seen at Pass level to ridgecrest.
Weather Forecast
Hurricane Ridge
| Sunday Night | Mostly clear in the evening with increasing high clouds overnight. |
| Monday | Overcast skies slowly lowering with light rain and snow developing in the afternoon. |
Mt. Baker
| Sunday Night | Mostly clear in the evening with increasing high clouds overnight. |
| Monday | Overcast skies slowly lowering with light rain and snow developing in the afternoon. Becoming windy. |
Washington Pass and Leavenworth
| Sunday Night | Mostly clear in the evening with periods of high clouds overnight. |
| Monday | Partly sunny with periods of high clouds in the morning, becoming overcast in the afternoon. Increasing alpine winds in the afternoon. |
Stevens and Snoqualmie Pass
| Sunday Night | Mostly clear in the evening with periods of high clouds overnight. |
| Monday | Partly sunny with periods of high clouds in the morning, becoming overcast in the afternoon. Increasing alpine winds in the afternoon. Light to moderate east winds at Pass level in the morning becoming variable in the afternoon. |
Mt. Rainier, Crystal and White Pass
| Sunday Night | Mostly clear in the evening with periods of high clouds overnight. |
| Monday | Partly sunny with periods of high clouds in the morning, becoming overcast in the afternoon. Increasing alpine winds late in the afternoon. |
Mt. Hood
| Sunday Night | Mostly clear. |
| Monday | Mostly sunny in the morning becoming partly sunny in the afternoon with periods of high clouds. |
Issued: 2:35 PM PDT Sunday, March 10, 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 * | 3500' | 1500' | 1500' | 1500' | 1500' | 1500' | 1500' | 1500' |
| Sunday Night | Freezing Level * | 3500' | 500' | 500' | 500' | 500' | 500' | 500' | 500' |
| Monday Morning | Freezing Level * | 5000' | 2000' | 2000' | 2000' | 2500' | 3000' | 3000' | 3000' |
| Monday Afternoon | Freezing Level | 4000' | 4000' | 4500' | 4000' | 5000' | 5000' | 5500' | 5500' |
| Monday Evening | Snow Level | 2500' | 2500' | 3000' | 3000' | 3000' | 3000' | 4000' | 4500' |
| Monday Night | Snow Level | 2500' | 2500' | 2000' | 1500' | 3000' | 3000' | 3000' | 3500' |
| Tuesday Morning | Snow Level | 2000' | 2000' | 1500' | 1500' | 2500' | 2500' | 2500' | 2500' |
| Tuesday Afternoon | Snow Level | 2000' | 2000' | 2000' | 2000' | 2500' | 2500' | 2500' | 2500' |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Evening |
Freezing Level 3500' (Easterly Flow *) |
| Sunday Night |
Freezing Level 3500' (Easterly Flow *) |
| Monday Morning |
Freezing Level 5000' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level 4000' |
| Monday Evening |
Snow Level 2500' |
| Monday Night |
Snow Level 2500' |
| Tuesday Morning |
Snow Level 2000' |
| Tuesday Afternoon |
Snow Level 2000' |
| Mt. Baker | Elevation |
|---|---|
| Sunday Evening |
Freezing Level 1500' (Easterly Flow *) |
| Sunday Night |
Freezing Level 500' (Easterly Flow *) |
| Monday Morning |
Freezing Level 2000' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level 4000' |
| Monday Evening |
Snow Level 2500' |
| Monday Night |
Snow Level 2500' |
| Tuesday Morning |
Snow Level 2000' |
| Tuesday Afternoon |
Snow Level 2000' |
| Washington Pass | Elevation |
|---|---|
| Sunday Evening |
Freezing Level 1500' (Easterly Flow *) |
| Sunday Night |
Freezing Level 500' (Easterly Flow *) |
| Monday Morning |
Freezing Level 2000' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level 4500' |
| Monday Evening |
Snow Level 3000' |
| Monday Night |
Snow Level 2000' |
| Tuesday Morning |
Snow Level 1500' |
| Tuesday Afternoon |
Snow Level 2000' |
| Leavenworth | Elevation |
|---|---|
| Sunday Evening |
Freezing Level 1500' (Easterly Flow *) |
| Sunday Night |
Freezing Level 500' (Easterly Flow *) |
| Monday Morning |
Freezing Level 2000' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level 4000' |
| Monday Evening |
Snow Level 3000' |
| Monday Night |
Snow Level 1500' |
| Tuesday Morning |
Snow Level 1500' |
| Tuesday Afternoon |
Snow Level 2000' |
| Stevens Pass | Elevation |
|---|---|
| Sunday Evening |
Freezing Level 1500' (Easterly Flow *) |
| Sunday Night |
Freezing Level 500' (Easterly Flow *) |
| Monday Morning |
Freezing Level 2500' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level 5000' |
| Monday Evening |
Snow Level 3000' |
| Monday Night |
Snow Level 3000' |
| Tuesday Morning |
Snow Level 2500' |
| Tuesday Afternoon |
Snow Level 2500' |
| Snoqualmie Pass | Elevation |
|---|---|
| Sunday Evening |
Freezing Level 1500' (Easterly Flow *) |
| Sunday Night |
Freezing Level 500' (Easterly Flow *) |
| Monday Morning |
Freezing Level 3000' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level 5000' |
| Monday Evening |
Snow Level 3000' |
| Monday Night |
Snow Level 3000' |
| Tuesday Morning |
Snow Level 2500' |
| Tuesday Afternoon |
Snow Level 2500' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Sunday Evening |
Freezing Level 1500' (Easterly Flow *) |
| Sunday Night |
Freezing Level 500' (Easterly Flow *) |
| Monday Morning |
Freezing Level 3000' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level 5500' |
| Monday Evening |
Snow Level 4000' |
| Monday Night |
Snow Level 3000' |
| Tuesday Morning |
Snow Level 2500' |
| Tuesday Afternoon |
Snow Level 2500' |
| Mt. Hood | Elevation |
|---|---|
| Sunday Evening |
Freezing Level 1500' (Easterly Flow *) |
| Sunday Night |
Freezing Level 500' (Easterly Flow *) |
| Monday Morning |
Freezing Level 3000' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level 5500' |
| Monday Evening |
Snow Level 4500' |
| Monday Night |
Snow Level 3500' |
| Tuesday Morning |
Snow Level 2500' |
| Tuesday Afternoon |
Snow Level 2500' |
* 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 | LT 0.10 | 0.25 - 0.50 | LT 0.10 |
| Mt Baker Ski Area | 0 | LT 0.10 | 0.75 -1.00 | 0.25 |
| Washington Pass | 0 | 0 | 0.25 - 0.50 | LT 0.25 |
| Leavenworth | 0 | 0 | LT 0.10 | LT 0.10 |
| Stevens Pass | 0 | 0 | 0.50 | 0.25 - 0.50 |
| Snoqualmie Pass | 0 | 0 | 0.50 - 0.75 | 0.25 - 0.50 |
| Mission Ridge | 0 | 0 | LT 0.10 | LT 0.10 |
| Crystal Mt | 0 | 0 | 0.25 | 0.25 - 0.50 |
| Paradise | 0 | 0 | 0.50 - 0.75 | 0.25 - 0.50 |
| White Pass | 0 | 0 | 0.25 - 0.50 | 0.25 - 0.50 |
| Mt Hood Meadows | 0 | 0 | 0.25 - 0.50 | 0.50 |
| Timberline | 0 | 0 | 0.50 | 0.50 - 0.75 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Wednesday | LT 0.10 |
| Wednesday Night | 0.25 - 0.50 |
| Wednesday | LT 0.10 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Wednesday | LT 0.10 |
| Wednesday Night | 0.75 -1.00 |
| Wednesday | 0.25 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Wednesday | 0 |
| Wednesday Night | 0.25 - 0.50 |
| Wednesday | LT 0.25 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Wednesday | 0 |
| Wednesday Night | LT 0.10 |
| Wednesday | LT 0.10 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Wednesday | 0 |
| Wednesday Night | 0.50 |
| Wednesday | 0.25 - 0.50 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Wednesday | 0 |
| Wednesday Night | 0.50 - 0.75 |
| Wednesday | 0.25 - 0.50 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Wednesday | 0 |
| Wednesday Night | LT 0.10 |
| Wednesday | LT 0.10 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Wednesday | 0 |
| Wednesday Night | 0.25 |
| Wednesday | 0.25 - 0.50 |
| Paradise | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Wednesday | 0 |
| Wednesday Night | 0.50 - 0.75 |
| Wednesday | 0.25 - 0.50 |
| White Pass | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Wednesday | 0 |
| Wednesday Night | 0.25 - 0.50 |
| Wednesday | 0.25 - 0.50 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Wednesday | 0 |
| Wednesday Night | 0.25 - 0.50 |
| Wednesday | 0.50 |
| Timberline | Precipitation Forecast |
|---|---|
| Sunday Night | 0 |
| Wednesday | 0 |
| Wednesday Night | 0.50 |
| Wednesday | 0.50 - 0.75 |
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: 2:35 PM PDT Sunday, March 10, 2019
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Sunday Evening | S 0 - 10 | S 0 - 10 | VAR 0 - 10 | VAR 0 - 10 | ESE 5 - 15 |
| Sunday Night | S 5 - 15 | S 5 - 15 | S 0 - 10 | S 0 - 10 | S 10 - 20 |
| Monday Morning | S 10 - 20 | S 10 - 20 | S 0 - 10 | S 0 - 10 | S 5 - 15 |
| Monday Afternoon | S 15 - 30 | S 15 - 30 | SW 5 - 15 | SW 5 - 15 | SW 5 - 15 |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Evening | S 0 - 10 |
| Sunday Night | S 5 - 15 |
| Monday Morning | S 10 - 20 |
| Monday Afternoon | S 15 - 30 |
| Mt. Baker | Elevation |
|---|---|
| Sunday Evening | S 0 - 10 |
| Sunday Night | S 5 - 15 |
| Monday Morning | S 10 - 20 |
| Monday Afternoon | S 15 - 30 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Sunday Evening | VAR 0 - 10 |
| Sunday Night | S 0 - 10 |
| Monday Morning | S 0 - 10 |
| Monday Afternoon | SW 5 - 15 |
| Mt. Rainier | Elevation |
|---|---|
| Sunday Evening | VAR 0 - 10 |
| Sunday Night | S 0 - 10 |
| Monday Morning | S 0 - 10 |
| Monday Afternoon | SW 5 - 15 |
| Mt. Hood | Elevation |
|---|---|
| Sunday Evening | ESE 5 - 15 |
| Sunday Night | S 10 - 20 |
| Monday Morning | S 5 - 15 |
| Monday Afternoon | SW 5 - 15 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Sunday Evening | S 0 - 10 |
| Sunday Night | S 5 - 15 |
| Monday Morning | S 10 - 20 |
| Monday Afternoon | S 15 - 30 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Evening | S 0 - 10 |
| Sunday Night | S 5 - 15 |
| Monday Morning | S 10 - 20 |
| Monday Afternoon | S 15 - 30 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Evening | VAR 0 - 10 |
| Sunday Night | S 0 - 10 |
| Monday Morning | S 0 - 10 |
| Monday Afternoon | SW 5 - 15 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Evening | VAR 0 - 10 |
| Sunday Night | S 0 - 10 |
| Monday Morning | S 0 - 10 |
| Monday Afternoon | SW 5 - 15 |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Evening | ESE 5 - 15 |
| Sunday Night | S 10 - 20 |
| Monday Morning | S 5 - 15 |
| Monday Afternoon | SW 5 - 15 |
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 | W 10 - 20 | W 10 - 20 | NW 5 - 15 | NW 5 - 15 | NE 0 - 10 |
| Sunday Night | WSW 15 - 25 | WSW 15 - 25 | W 10 - 20 | W 5 - 15 | VAR 0 - 10 |
| Monday Morning | SW 20 - 30 | SW 20 - 30 | SW 15 - 25 | SW 10 - 20 | W 5 - 15 |
| Monday Afternoon | SW 35 - 45 | SW 25 - 40 | SW 25 - 40 | SW 25 - 35 | SW 15 - 25 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Evening | W 10 - 20 |
| Sunday Night | WSW 15 - 25 |
| Monday Morning | SW 20 - 30 |
| Monday Afternoon | SW 35 - 45 |
| Washington Pass | Direction - Speed |
|---|---|
| Sunday Evening | W 10 - 20 |
| Sunday Night | WSW 15 - 25 |
| Monday Morning | SW 20 - 30 |
| Monday Afternoon | SW 25 - 40 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Evening | NW 5 - 15 |
| Sunday Night | W 10 - 20 |
| Monday Morning | SW 15 - 25 |
| Monday Afternoon | SW 25 - 40 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Evening | NW 5 - 15 |
| Sunday Night | W 5 - 15 |
| Monday Morning | SW 10 - 20 |
| Monday Afternoon | SW 25 - 35 |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Evening | NE 0 - 10 |
| Sunday Night | VAR 0 - 10 |
| Monday Morning | W 5 - 15 |
| Monday Afternoon | SW 15 - 25 |
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: 2:35 PM PDT Sunday, March 10, 2019
Extended Weather Synopsis for Wednesday night through Wednesday
Showers should wind down quickly Tuesday night as the upper trough carves over the Great Basin. We'll be on the backside of the trough on Wednesday with an upper level ridge building offshore. On Wednesday, there should be enough low level moisture and weak onshore flow at the surface for mostly cloudy conditions and perhaps the stray afternoon shower over the mountains. Forecast models diverge for Thursday. Some keep the PNW dry, while the GFS dissipates a weak frontal system over the area in the afternoon.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Tuesday Night | Snow Level | 1000' - 2000' | 1000' - 2000' | 1500' - 2500' | |
| Wednesday | Snow Level | 1500' - 2500' | 1500' - 2500' | 1500' - 2500' | |
| Wednesday Night | Freezing Level | 2000' - 3000' | 2000' - 3000' | 3500' - 4500' | |
| Thursday | Freezing Level | 3500' - 4500' | 4500' - 5500' | 5000' - 6000' |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Night |
Snow Level 1000' - 2000' |
| Wednesday |
Snow Level 1500' - 2500' |
| Wednesday Night |
Freezing Level 2000' - 3000' |
| Thursday |
Freezing Level 3500' - 4500' |
| Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Night |
Snow Level 1000' - 2000' |
| Wednesday |
Snow Level 1500' - 2500' |
| Wednesday Night |
Freezing Level 2000' - 3000' |
| Thursday |
Freezing Level 4500' - 5500' |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Night |
Snow Level 1500' - 2500' |
| Wednesday |
Snow Level 1500' - 2500' |
| Wednesday Night |
Freezing Level 3500' - 4500' |
| Thursday |
Freezing Level 5000' - 6000' |
* 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 10, 2019
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