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 & Monday
A skinny amplified upper level ridge located at 130 W extends well north into the B.C/Yukon and combined with longwave troughing over the intermountain western U.S. forms an omega blocking pattern over much of the west coast. This blocking high pressure pattern will lead to dry and mostly clear weather through the short term.
Breezy E-NE winds found at the Cascade crest level and in the passes will continue for the first half of the day, however E-NE winds will be strong down near Mt. Hood through Sunday night. After a cool start Sunday morning some warming will take place Sunday afternoon, mainly in the alpine.
The upper level ridge axis will shift closer to the PNW Monday, winds should be lighter and freezing levels will rise.
Weather Forecast
Washington Cascades
| Sunday Morning |
Mostly sunny and cold. Breezy east winds. |
| Sunday Afternoon |
Mostly sunny, East winds easing, slow warming trend. |
| Sunday Night |
Mostly clear. |
| Monday - Monday Night |
Mostly clear and mild. |
Olympics
| Sunday |
Mostly sunny, slow warming trend. |
| Sunday Night - Monday Night |
Mostly clear. |
Mt. Hood Area
| Sunday |
Mostly sunny and cold. Moderate to strong east winds. |
| Sunday Night - Monday Morning |
Mostly clear, breezy east winds. |
| Monday Afternoon - Monday Night |
Mostly clear and warmer. |
Issued: 7:53 AM PST Sunday, February 22, 2015
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Sunday Morning | Freezing Level * | 4500' | 3000' | 1500' | ' | ' | 2000' | ' | 2500' |
| Sunday Afternoon - Monday Morning | Freezing Level * | 7500' | 6000' | 5000' | ' | ' | 5000' | ' | 4000' |
| Monday Afternoon | Freezing Level | 9500' | 9000' | 8500' | ' | ' | 8500' | ' | 8500' |
| Monday Night | Freezing Level | 7500' | 6500' | 6000' | ' | ' | 7000' | ' | 8000' |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Morning |
Freezing Level 4500' (Easterly Flow *) |
| Sunday Afternoon - Monday Morning |
Freezing Level 7500' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level 9500' |
| Monday Night |
Freezing Level 7500' |
| Mt. Baker | Elevation |
|---|---|
| Sunday Morning |
Freezing Level 3000' (Easterly Flow *) |
| Sunday Afternoon - Monday Morning |
Freezing Level 6000' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level 9000' |
| Monday Night |
Freezing Level 6500' |
| Washington Pass | Elevation |
|---|---|
| Sunday Morning |
Freezing Level 1500' (Easterly Flow *) |
| Sunday Afternoon - Monday Morning |
Freezing Level 5000' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level 8500' |
| Monday Night |
Freezing Level 6000' |
| Leavenworth | Elevation |
|---|---|
| Sunday Morning |
Freezing Level ' (Easterly Flow *) |
| Sunday Afternoon - Monday Morning |
Freezing Level ' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level ' |
| Monday Night |
Freezing Level ' |
| Stevens Pass | Elevation |
|---|---|
| Sunday Morning |
Freezing Level ' (Easterly Flow *) |
| Sunday Afternoon - Monday Morning |
Freezing Level ' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level ' |
| Monday Night |
Freezing Level ' |
| Snoqualmie Pass | Elevation |
|---|---|
| Sunday Morning |
Freezing Level 2000' (Easterly Flow *) |
| Sunday Afternoon - Monday Morning |
Freezing Level 5000' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level 8500' |
| Monday Night |
Freezing Level 7000' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Sunday Morning |
Freezing Level ' (Easterly Flow *) |
| Sunday Afternoon - Monday Morning |
Freezing Level ' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level ' |
| Monday Night |
Freezing Level ' |
| Mt. Hood | Elevation |
|---|---|
| Sunday Morning |
Freezing Level 2500' (Easterly Flow *) |
| Sunday Afternoon - Monday Morning |
Freezing Level 4000' (Easterly Flow *) |
| Monday Afternoon |
Freezing Level 8500' |
| Monday Night |
Freezing Level 8000' |
* 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
| Monday | Monday | |
|---|---|---|
| Hurricane Ridge | LT 0.10 | LT 0.10 |
| Mt Baker Ski Area | LT 0.10 | LT 0.10 |
| Washington Pass | LT 0.10 | LT 0.10 |
| Stevens Pass | LT 0.10 | LT 0.10 |
| Snoqualmie Pass | LT 0.10 | LT 0.10 |
| Mission Ridge | LT 0.10 | LT 0.10 |
| Crystal Mt | LT 0.10 | LT 0.10 |
| Paradise | LT 0.10 | LT 0.10 |
| White Pass | LT 0.10 | LT 0.10 |
| Mt Hood Meadows | LT 0.10 | LT 0.10 |
| Timberline | LT 0.10 | 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: 7:53 AM PST Sunday, February 22, 2015
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Sunday Morning | NE 5 - 15 | NE 5 - 15 | E 15 - 25 | --- - | ENE 25 - 35 |
| Sunday Afternoon | NE 5 - 15 | NE 5 - 15 | E 5 - 15 | --- - | ENE 15 - 25 |
| Sunday Night - Monday Morning | NE 0 - 10 | NE 0 - 10 | E 0 - 10 | --- - | E 15 - 25 |
| Monday Afternoon | NW 0 - 10 | NW 0 - 10 | NW 0 - 10 | --- - | E 5 - 15 |
| Monday Night | W 0 - 10 | W 0 - 10 | W 0 - 10 | --- - | W 0 - 10 |
| Hurricane Ridge | Elevation |
|---|---|
| Sunday Morning | NE 5 - 15 |
| Sunday Afternoon | NE 5 - 15 |
| Sunday Night - Monday Morning | NE 0 - 10 |
| Monday Afternoon | NW 0 - 10 |
| Monday Night | W 0 - 10 |
| Mt. Baker | Elevation |
|---|---|
| Sunday Morning | NE 5 - 15 |
| Sunday Afternoon | NE 5 - 15 |
| Sunday Night - Monday Morning | NE 0 - 10 |
| Monday Afternoon | NW 0 - 10 |
| Monday Night | W 0 - 10 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Sunday Morning | E 15 - 25 |
| Sunday Afternoon | E 5 - 15 |
| Sunday Night - Monday Morning | E 0 - 10 |
| Monday Afternoon | NW 0 - 10 |
| Monday Night | W 0 - 10 |
| Mt. Rainier | Elevation |
|---|---|
| Sunday Morning | --- - |
| Sunday Afternoon | --- - |
| Sunday Night - Monday Morning | --- - |
| Monday Afternoon | --- - |
| Monday Night | --- - |
| Mt. Hood | Elevation |
|---|---|
| Sunday Morning | ENE 25 - 35 |
| Sunday Afternoon | ENE 15 - 25 |
| Sunday Night - Monday Morning | E 15 - 25 |
| Monday Afternoon | E 5 - 15 |
| Monday Night | W 0 - 10 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Sunday Morning | NE 5 - 15 |
| Sunday Afternoon | NE 5 - 15 |
| Sunday Night - Monday Morning | NE 0 - 10 |
| Monday Afternoon | NW 0 - 10 |
| Monday Night | W 0 - 10 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday Morning | NE 5 - 15 |
| Sunday Afternoon | NE 5 - 15 |
| Sunday Night - Monday Morning | NE 0 - 10 |
| Monday Afternoon | NW 0 - 10 |
| Monday Night | W 0 - 10 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday Morning | E 15 - 25 |
| Sunday Afternoon | E 5 - 15 |
| Sunday Night - Monday Morning | E 0 - 10 |
| Monday Afternoon | NW 0 - 10 |
| Monday Night | W 0 - 10 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday Morning | --- - |
| Sunday Afternoon | --- - |
| Sunday Night - Monday Morning | --- - |
| Monday Afternoon | --- - |
| Monday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday Morning | ENE 25 - 35 |
| Sunday Afternoon | ENE 15 - 25 |
| Sunday Night - Monday Morning | E 15 - 25 |
| Monday Afternoon | E 5 - 15 |
| Monday Night | 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 | |
|---|---|---|---|---|---|
| Sunday | NE 20 - 30 | NNE 20 - 30 | NE 20 - 30 | --- - | NE 30 - 40 |
| Sunday Night - Monday Morning | NE 10 - 20 | N 15 - 25 | N 5 - 15 | --- - | NE 10 - 20 |
| Monday Afternoon | N 5 - 15 | N 10 - 20 | N 5 - 15 | --- - | NE 10 - 20 |
| Monday Night | WNW 10 - 20 | WNW 10 - 20 | WNW 10 - 20 | --- - | WNW 10 - 20 |
| Mt. Baker | Direction - Speed |
|---|---|
| Sunday | NE 20 - 30 |
| Sunday Night - Monday Morning | NE 10 - 20 |
| Monday Afternoon | N 5 - 15 |
| Monday Night | WNW 10 - 20 |
| Washington Pass | Direction - Speed |
|---|---|
| Sunday | NNE 20 - 30 |
| Sunday Night - Monday Morning | N 15 - 25 |
| Monday Afternoon | N 10 - 20 |
| Monday Night | WNW 10 - 20 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Sunday | NE 20 - 30 |
| Sunday Night - Monday Morning | N 5 - 15 |
| Monday Afternoon | N 5 - 15 |
| Monday Night | WNW 10 - 20 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Sunday | --- - |
| Sunday Night - Monday Morning | --- - |
| Monday Afternoon | --- - |
| Monday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Sunday | NE 30 - 40 |
| Sunday Night - Monday Morning | NE 10 - 20 |
| Monday Afternoon | NE 10 - 20 |
| Monday Night | WNW 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: 7:53 AM PST Sunday, February 22, 2015
Extended Weather Synopsis for Monday night through Monday
A weak shortwave will approach from the NW on Tuesday. This should only bring an increase in mid and high level clouds to the area by Tuesday afternoon. A general increase in cloudniess should be seen Tuesday night through Wednesday, but most forecast models keep precipitation out of the forecast.
A more significant upper level shortwave in NW flow aloft should reach the area Wednesday night... bringing showers and cloudy conditions through Thursday.
Extended Weather
Olympics, Washington Cascades and Mt. Hood Area
Mostly sunny.
Partly to mostly cloudy.
Cloudy with light rain and snow showers, except occasionally moderate west slopes of the Cascades and Mt. Hood.
Becoming partly to mostly cloudy with increasing mid and high clouds. Cooling trend.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Tuesday Morning | Freezing Level | 5500' - 6500' | 6500' - 7500' | 8500' - 9500' | |
| Tuesday Afternoon | Freezing Level | 4500' - 5500' | 5000' - 6000' | 6500' - 7500' | |
| Tuesday Night - Wednesday Morning | Freezing Level | 3500' - 4500' | 3000' - 4000' | 4500' - 5500' | |
| Wednesday Afternoon | Freezing Level | 4000' - 5000' | 4500' - 5500' | 5500' - 6500' | |
| Wednesday Night - Thursday | Snow Level | 3000' - 4000' | 3500' - 4500' | 4000' - 5000' |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Morning |
Freezing Level 5500' - 6500' |
| Tuesday Afternoon |
Freezing Level 4500' - 5500' |
| Tuesday Night - Wednesday Morning |
Freezing Level 3500' - 4500' |
| Wednesday Afternoon |
Freezing Level 4000' - 5000' |
| Wednesday Night - Thursday |
Snow Level 3000' - 4000' |
| Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Morning |
Freezing Level 6500' - 7500' |
| Tuesday Afternoon |
Freezing Level 5000' - 6000' |
| Tuesday Night - Wednesday Morning |
Freezing Level 3000' - 4000' |
| Wednesday Afternoon |
Freezing Level 4500' - 5500' |
| Wednesday Night - Thursday |
Snow Level 3500' - 4500' |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Morning |
Freezing Level 8500' - 9500' |
| Tuesday Afternoon |
Freezing Level 6500' - 7500' |
| Tuesday Night - Wednesday Morning |
Freezing Level 4500' - 5500' |
| Wednesday Afternoon |
Freezing Level 5500' - 6500' |
| Wednesday Night - Thursday |
Snow Level 4000' - 5000' |
* 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 Feb 21, 2015
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