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 Saturday
A cold upper low moves onshore over western Washington Thursday evening with mostly light but occasionally moderate snow shower activity impacting the Cascades during the evening hours before dissipating overnight as the upper low weakens and transfers energy to a surface low predicted to spawn in the nearshore waters. The surface low will take the energy and moisture south into northern Oregon and southern Washington, such that the previously forecast convergence is no longer expected. Snow levels will drop to sea-level Thursday night into Friday morning before increasing with diurnal warming. With the moisture further south, Friday will feature sun breaks in most areas of Washington state, while the Mt. Hood and SW Washington Cascades areas stay cloudier with more chances of light snow as surface low moves onshore near the mouth of the Columbia River late Friday.
The surface low is expected to continue to move SE Friday night, weakening as it does, with light snow showers ending from the Mt. Rainier area progressively southward as the night wears on. Expect clearing skies in many areas with strong radiational cooling and light winds.
Saturday will be cool with partial sunshine west of the Cascade crest and mostly sunny weather east of the crest. The energy of the storm track is expected to produce a cutoff low off the coast of northern California on Saturday.
Weather Forecast
Hurricane Ridge
| Thursday Night | Light snow showers heaviest in the evening and then decreasing and ending. Light winds. |
| Friday | Partly cloudy with increasing clouds and a chance of light snow showers in the afternoon. Light winds. |
Mt. Baker
| Thursday Night | Decreasing snow showers, mainly during the evening hours. Light winds. |
| Friday | Partly cloudy with a chance of light snow showers in the afternoon. Light winds. |
Washington Pass and Leavenworth
| Thursday Night | Light snow showers mainly during the evening hours, tapering to flurries after midnight. Light winds. |
| Friday | Partly cloudy with a chance of flurries. Light winds. |
Stevens and Snoqualmie Pass
| Thursday Night | Light to occasionally moderate snow in the evening, then becoming flurries after midnight. Light west winds at pass level and 5000 feet. |
| Friday | Mostly cloudy with a chance of snow flurries. Light west winds at pass level and 5000 feet. |
Mt. Rainier, Crystal and White Pass
| Thursday Night | Light to occasionally moderate snow in the evening, then becoming flurries after midnight. Very light snow at Crystal (mostly blocked). Light winds. |
| Friday | Mostly cloudy with a chance of snow flurries. Light winds. |
Mt. Hood
| Thursday Night | Light snow showers decreasing after midnight. Light to moderate winds. |
| Friday | Very light snow showers in the morning. Light snow showers in the afternoon, increasing late. Light to moderate winds. |
Issued: 2:38 PM PST Thursday, March 7, 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 | Snow Level | 1000' | 500' | 500' | 1000' | 1000' | 1000' | 1500' | 1500' |
| Thursday Night | Snow Level | 500' | 0' | 0' | 0' | 0' | 0' | 0' | 500' |
| Friday Morning | Snow Level | 0' | 0' | 0' | 0' | 0' | 0' | 0' | 0' |
| Friday Afternoon | Snow Level | 1000' | 1000' | 1000' | 1000' | 1000' | 1000' | 1000' | 1000' |
| Friday Evening | Snow Level | 1000' | 1000' | 1000' | 1000' | 1000' | 1000' | 1000' | 1000' |
| Friday Night | Snow Level | 500' | 0' | 0' | 0' | 0' | 0' | 0' | 500' |
| Saturday Morning | Freezing Level * | 1000' | 500' | 5000' | 0' | 500' | 500' | 500' | 1000' |
| Saturday Afternoon | Freezing Level * | 2000' | 2500' | 2000' | 1500' | 2000' | 2000' | 2500' | 2000' |
| Hurricane Ridge | Elevation |
|---|---|
| Thursday Evening |
Snow Level 1000' |
| Thursday Night |
Snow Level 500' |
| Friday Morning |
Snow Level 0' |
| Friday Afternoon |
Snow Level 1000' |
| Friday Evening |
Snow Level 1000' |
| Friday Night |
Snow Level 500' |
| Saturday Morning |
Freezing Level 1000' (Easterly Flow *) |
| Saturday Afternoon |
Freezing Level 2000' (Easterly Flow *) |
| Mt. Baker | Elevation |
|---|---|
| Thursday Evening |
Snow Level 500' |
| Thursday Night |
Snow Level 0' |
| Friday Morning |
Snow Level 0' |
| Friday Afternoon |
Snow Level 1000' |
| Friday Evening |
Snow Level 1000' |
| Friday Night |
Snow Level 0' |
| Saturday Morning |
Freezing Level 500' (Easterly Flow *) |
| Saturday Afternoon |
Freezing Level 2500' (Easterly Flow *) |
| Washington Pass | Elevation |
|---|---|
| Thursday Evening |
Snow Level 500' |
| Thursday Night |
Snow Level 0' |
| Friday Morning |
Snow Level 0' |
| Friday Afternoon |
Snow Level 1000' |
| Friday Evening |
Snow Level 1000' |
| Friday Night |
Snow Level 0' |
| Saturday Morning |
Freezing Level 5000' (Easterly Flow *) |
| Saturday Afternoon |
Freezing Level 2000' (Easterly Flow *) |
| Leavenworth | Elevation |
|---|---|
| Thursday Evening |
Snow Level 1000' |
| Thursday Night |
Snow Level 0' |
| Friday Morning |
Snow Level 0' |
| Friday Afternoon |
Snow Level 1000' |
| Friday Evening |
Snow Level 1000' |
| Friday Night |
Snow Level 0' |
| Saturday Morning |
Freezing Level 0' (Easterly Flow *) |
| Saturday Afternoon |
Freezing Level 1500' (Easterly Flow *) |
| Stevens Pass | Elevation |
|---|---|
| Thursday Evening |
Snow Level 1000' |
| Thursday Night |
Snow Level 0' |
| Friday Morning |
Snow Level 0' |
| Friday Afternoon |
Snow Level 1000' |
| Friday Evening |
Snow Level 1000' |
| Friday Night |
Snow Level 0' |
| Saturday Morning |
Freezing Level 500' (Easterly Flow *) |
| Saturday Afternoon |
Freezing Level 2000' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Thursday Evening |
Snow Level 1000' |
| Thursday Night |
Snow Level 0' |
| Friday Morning |
Snow Level 0' |
| Friday Afternoon |
Snow Level 1000' |
| Friday Evening |
Snow Level 1000' |
| Friday Night |
Snow Level 0' |
| Saturday Morning |
Freezing Level 500' (Easterly Flow *) |
| Saturday Afternoon |
Freezing Level 2000' (Easterly Flow *) |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Thursday Evening |
Snow Level 1500' |
| Thursday Night |
Snow Level 0' |
| Friday Morning |
Snow Level 0' |
| Friday Afternoon |
Snow Level 1000' |
| Friday Evening |
Snow Level 1000' |
| Friday Night |
Snow Level 0' |
| Saturday Morning |
Freezing Level 500' (Easterly Flow *) |
| Saturday Afternoon |
Freezing Level 2500' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Thursday Evening |
Snow Level 1500' |
| Thursday Night |
Snow Level 500' |
| Friday Morning |
Snow Level 0' |
| Friday Afternoon |
Snow Level 1000' |
| Friday Evening |
Snow Level 1000' |
| Friday Night |
Snow Level 500' |
| Saturday Morning |
Freezing Level 1000' (Easterly Flow *) |
| Saturday Afternoon |
Freezing Level 2000' (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
| Thursday Night | Saturday | Saturday Night | Saturday | |
|---|---|---|---|---|
| 4 pm - 4 am | 4 am - 4 pm | 4 pm - 4 am | 4 am - 4 pm | |
| Hurricane Ridge | LT 0.25 | LT 0.10 | 0 | 0 |
| Mt Baker Ski Area | LT 0.10 | LT 0.10 | 0 | 0 |
| Washington Pass | LT 0.10 | 0 | 0 | 0 |
| Leavenworth | 0 | 0 | 0 | 0 |
| Stevens Pass | 0.25 | LT 0.10 | 0 | 0 |
| Snoqualmie Pass | 0.25 | 0 | 0 | 0 |
| Mission Ridge | LT 0.10 | LT 0.10 | 0 | 0 |
| Crystal Mt | LT 0.10 | 0.25 | LT 0.10 | 0 |
| Paradise | 0.25 | LT 0.10 | LT 0.10 | 0 |
| White Pass | LT 0.25 | LT 0.10 | LT 0.10 | 0 |
| Mt Hood Meadows | 0.25 | LT 0.25 | 0.25 | 0 |
| Timberline | 0.25 | 0.25 | 0.25 | 0 |
| Hurricane Ridge | Precipitation Forecast |
|---|---|
| Thursday Night | LT 0.25 |
| Saturday | LT 0.10 |
| Saturday Night | 0 |
| Saturday | 0 |
| Mt Baker Ski Area | Precipitation Forecast |
|---|---|
| Thursday Night | LT 0.10 |
| Saturday | LT 0.10 |
| Saturday Night | 0 |
| Saturday | 0 |
| Washington Pass | Precipitation Forecast |
|---|---|
| Thursday Night | LT 0.10 |
| Saturday | 0 |
| Saturday Night | 0 |
| Saturday | 0 |
| Leavenworth | Precipitation Forecast |
|---|---|
| Thursday Night | 0 |
| Saturday | 0 |
| Saturday Night | 0 |
| Saturday | 0 |
| Stevens Pass | Precipitation Forecast |
|---|---|
| Thursday Night | 0.25 |
| Saturday | LT 0.10 |
| Saturday Night | 0 |
| Saturday | 0 |
| Snoqualmie Pass | Precipitation Forecast |
|---|---|
| Thursday Night | 0.25 |
| Saturday | 0 |
| Saturday Night | 0 |
| Saturday | 0 |
| Mission Ridge | Precipitation Forecast |
|---|---|
| Thursday Night | LT 0.10 |
| Saturday | LT 0.10 |
| Saturday Night | 0 |
| Saturday | 0 |
| Crystal Mt | Precipitation Forecast |
|---|---|
| Thursday Night | LT 0.10 |
| Saturday | 0.25 |
| Saturday Night | LT 0.10 |
| Saturday | 0 |
| Paradise | Precipitation Forecast |
|---|---|
| Thursday Night | 0.25 |
| Saturday | LT 0.10 |
| Saturday Night | LT 0.10 |
| Saturday | 0 |
| White Pass | Precipitation Forecast |
|---|---|
| Thursday Night | LT 0.25 |
| Saturday | LT 0.10 |
| Saturday Night | LT 0.10 |
| Saturday | 0 |
| Mt Hood Meadows | Precipitation Forecast |
|---|---|
| Thursday Night | 0.25 |
| Saturday | LT 0.25 |
| Saturday Night | 0.25 |
| Saturday | 0 |
| Timberline | Precipitation Forecast |
|---|---|
| Thursday Night | 0.25 |
| Saturday | 0.25 |
| Saturday Night | 0.25 |
| Saturday | 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: 2:38 PM PST Thursday, March 7, 2019
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Thursday Evening | W 5 - 15 | SSW 5 - 15 | WSW 10 - 20 | WSW 5 - 15 | WSW 10 - 20 |
| Thursday Night | W 5 - 15 | VAR 0 - 10 | W 5 - 15 | WSW 5 - 15 | WSW 10 - 20 |
| Friday Morning | VAR 0 - 10 | S 0 - 10 | WSW 5 - 15 | WSW 5 - 15 | WSW 10 - 20 |
| Friday Afternoon | VAR 0 - 10 | WSW 0 - 10 | W 0 - 10 | W 0 - 10 | WSW 10 - 20 |
| Hurricane Ridge | Elevation |
|---|---|
| Thursday Evening | W 5 - 15 |
| Thursday Night | W 5 - 15 |
| Friday Morning | VAR 0 - 10 |
| Friday Afternoon | VAR 0 - 10 |
| Mt. Baker | Elevation |
|---|---|
| Thursday Evening | SSW 5 - 15 |
| Thursday Night | VAR 0 - 10 |
| Friday Morning | S 0 - 10 |
| Friday Afternoon | WSW 0 - 10 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Thursday Evening | WSW 10 - 20 |
| Thursday Night | W 5 - 15 |
| Friday Morning | WSW 5 - 15 |
| Friday Afternoon | W 0 - 10 |
| Mt. Rainier | Elevation |
|---|---|
| Thursday Evening | WSW 5 - 15 |
| Thursday Night | WSW 5 - 15 |
| Friday Morning | WSW 5 - 15 |
| Friday Afternoon | W 0 - 10 |
| Mt. Hood | Elevation |
|---|---|
| Thursday Evening | WSW 10 - 20 |
| Thursday Night | WSW 10 - 20 |
| Friday Morning | WSW 10 - 20 |
| Friday Afternoon | WSW 10 - 20 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Thursday Evening | W 5 - 15 |
| Thursday Night | W 5 - 15 |
| Friday Morning | VAR 0 - 10 |
| Friday Afternoon | VAR 0 - 10 |
| Mt. Baker | Direction - Speed |
|---|---|
| Thursday Evening | SSW 5 - 15 |
| Thursday Night | VAR 0 - 10 |
| Friday Morning | S 0 - 10 |
| Friday Afternoon | WSW 0 - 10 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Thursday Evening | WSW 10 - 20 |
| Thursday Night | W 5 - 15 |
| Friday Morning | WSW 5 - 15 |
| Friday Afternoon | W 0 - 10 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Thursday Evening | WSW 5 - 15 |
| Thursday Night | WSW 5 - 15 |
| Friday Morning | WSW 5 - 15 |
| Friday Afternoon | W 0 - 10 |
| Mt. Hood | Direction - Speed |
|---|---|
| Thursday Evening | WSW 10 - 20 |
| Thursday Night | WSW 10 - 20 |
| Friday Morning | WSW 10 - 20 |
| Friday Afternoon | WSW 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 | WSW 5 - 15 | W 10 - 20 | WSW 15 - 25 | WSW 15 - 25 | WSW 25 - 35 |
| Thursday Night | SW 5 - 15 | W 5 - 15 | W 10 - 20 | W 15 - 25 | W 20 - 30 |
| Friday Morning | WSW 5 - 15 | WNW 5 - 15 | WNW 10 - 20 | WNW 10 - 20 | W 15 - 25 |
| Friday Afternoon | W 5 - 15 | WNW 5 - 15 | WNW 5 - 15 | WSW 5 - 15 | WSW 25 - 35 |
| Mt. Baker | Direction - Speed |
|---|---|
| Thursday Evening | WSW 5 - 15 |
| Thursday Night | SW 5 - 15 |
| Friday Morning | WSW 5 - 15 |
| Friday Afternoon | W 5 - 15 |
| Washington Pass | Direction - Speed |
|---|---|
| Thursday Evening | W 10 - 20 |
| Thursday Night | W 5 - 15 |
| Friday Morning | WNW 5 - 15 |
| Friday Afternoon | WNW 5 - 15 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Thursday Evening | WSW 15 - 25 |
| Thursday Night | W 10 - 20 |
| Friday Morning | WNW 10 - 20 |
| Friday Afternoon | WNW 5 - 15 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Thursday Evening | WSW 15 - 25 |
| Thursday Night | W 15 - 25 |
| Friday Morning | WNW 10 - 20 |
| Friday Afternoon | WSW 5 - 15 |
| Mt. Hood | Direction - Speed |
|---|---|
| Thursday Evening | WSW 25 - 35 |
| Thursday Night | W 20 - 30 |
| Friday Morning | W 15 - 25 |
| Friday Afternoon | WSW 25 - 35 |
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: 2:38 PM PST Thursday, March 7, 2019
Extended Weather Synopsis for Saturday night through Saturday
A wedge of high pressure will build Saturday night through Monday night with a gradual erosion of the cold air already in place. Sunday will be slightly warmer than Saturday The temporary high-pressure spell will feature clear, cold nights, sunny days and a light easterly flow through the passes.
On Monday, a sharp, but weakening trough will move over the area from the northwest, bringing a round of snowfall and wind along with a shot of colder air.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Saturday Night | Freezing Level | 1000' - 2000' | 1000' - 2000' | 500' - 1500' | * |
| Sunday | Freezing Level | 1000' - 3000' | 1000' - 3000' | 0' - 2000' | * |
| Sunday Night | Freezing Level | 2000' - 4000' | 1500' - 3500' | 500' - 2500' | * |
| Monday | Freezing Level | 1500' - 3500' | 2000' - 4000' | 2500' - 4500' | * |
| Mt. Baker | Elevation |
|---|---|
| Saturday Night |
Freezing Level 1000' - 2000' (Easterly Flow *) |
| Sunday |
Freezing Level 1000' - 3000' (Easterly Flow *) |
| Sunday Night |
Freezing Level 2000' - 4000' (Easterly Flow *) |
| Monday |
Freezing Level 1500' - 3500' (Easterly Flow *) |
| Snoqualmie Pass | Elevation |
|---|---|
| Saturday Night |
Freezing Level 1000' - 2000' (Easterly Flow *) |
| Sunday |
Freezing Level 1000' - 3000' (Easterly Flow *) |
| Sunday Night |
Freezing Level 1500' - 3500' (Easterly Flow *) |
| Monday |
Freezing Level 2000' - 4000' (Easterly Flow *) |
| Mt. Hood | Elevation |
|---|---|
| Saturday Night |
Freezing Level 500' - 1500' (Easterly Flow *) |
| Sunday |
Freezing Level 0' - 2000' (Easterly Flow *) |
| Sunday Night |
Freezing Level 500' - 2500' (Easterly Flow *) |
| Monday |
Freezing Level 2500' - 4500' (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.
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 7, 2019
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