Jump to: Weather Forecast I Snow/Freezing Level I Precipitation I Free Winds 5k I Free Winds 9k I Extended Weather
Weather Synopsis for Tuesday & Thursday
Another mild day is in store for the PNW with freezing levels around 10,000 ft, however, initially clear skies should fill in with a high overcast for most areas by mid-day. Upper level ridging over the coast will shift east tonight as a stacked low pressure system offshore rotates the first frontal wave towards the area. Light rain and snow should develop overnight and continue through Wednesday. The Mt. Hood area may locally see some moderate precipitation as the jet stream becomes oriented toward Oregon beginning Wednesday afternoon.
Another front will pass through Wednesday night providing the west slopes with a moderate period of precipitation. Unfortunatley, snow levels stay well above pass level for this storm.
Weather Forecast
Olympics, Washington Cascades near and west of the crest including Stevens, Snoqualmie, and White Passes
| Tuesday Morning |
Mostly clear and mild. |
| Tuesday Afternoon |
Becoming mostly cloudy with a high overcast. |
| Tuesday Night - Wednesday |
Occasional light rain and snow beginning overnight. |
| Wednesday Night |
Light to moderate rain and snow becoming showers after midnight. |
East slopes of the Washington Cascades
| Tuesday Morning |
Mostly clear and mild. |
| Tuesday Afternoon |
Becoming mostly cloudy with a high overcast. |
| Tuesday Night - Wednesday |
Occasional light rain and snow beginning overnight, mainly near the Cascade crest. |
| Wednesday Night |
Light rain and snow becoming showers after midnight. |
Mt. Hood Area
| Tuesday Morning |
Mostly clear and mild. |
| Tuesday Afternoon |
Becoming mostly cloudy with a high overcast. |
| Tuesday Night - Wednesday Morning |
Occasional light rain and snow developing overnight. |
| Wednesday Mid-day - Wednesday Night |
Light to moderate rain and snow becoming showers after midnight. |
Issued: 7:53 AM PDT Tuesday, March 10, 2015
Snow/Freezing Level (ft)
| Hurricane Ridge | Mt. Baker | Washington Pass | Leavenworth | Stevens Pass | Snoqualmie Pass | Mt. Rainier, Crystal & White Pass | Mt. Hood | ||
|---|---|---|---|---|---|---|---|---|---|
| Tuesday | Freezing Level | 10000' | 9500' | 9500' | ' | ' | 10000' | ' | 11000' |
| Tuesday Night | Snow Level | 6000' | 5500' | 5500' | ' | ' | 5500' | ' | 6500' |
| Wednesday - Wednesday Evening | Snow Level | 6000' | 6000' | 6000' | ' | ' | 6500' | ' | 7000' |
| Wednesday Night | Snow Level | 5500' | 5500' | 5500' | ' | ' | 5500' | ' | 6000' |
| Hurricane Ridge | Elevation |
|---|---|
| Tuesday |
Freezing Level 10000' |
| Tuesday Night |
Snow Level 6000' |
| Wednesday - Wednesday Evening |
Snow Level 6000' |
| Wednesday Night |
Snow Level 5500' |
| Mt. Baker | Elevation |
|---|---|
| Tuesday |
Freezing Level 9500' |
| Tuesday Night |
Snow Level 5500' |
| Wednesday - Wednesday Evening |
Snow Level 6000' |
| Wednesday Night |
Snow Level 5500' |
| Washington Pass | Elevation |
|---|---|
| Tuesday |
Freezing Level 9500' |
| Tuesday Night |
Snow Level 5500' |
| Wednesday - Wednesday Evening |
Snow Level 6000' |
| Wednesday Night |
Snow Level 5500' |
| Leavenworth | Elevation |
|---|---|
| Tuesday |
Freezing Level ' |
| Tuesday Night |
Snow Level ' |
| Wednesday - Wednesday Evening |
Snow Level ' |
| Wednesday Night |
Snow Level ' |
| Stevens Pass | Elevation |
|---|---|
| Tuesday |
Freezing Level ' |
| Tuesday Night |
Snow Level ' |
| Wednesday - Wednesday Evening |
Snow Level ' |
| Wednesday Night |
Snow Level ' |
| Snoqualmie Pass | Elevation |
|---|---|
| Tuesday |
Freezing Level 10000' |
| Tuesday Night |
Snow Level 5500' |
| Wednesday - Wednesday Evening |
Snow Level 6500' |
| Wednesday Night |
Snow Level 5500' |
| Mt. Rainier & Crystal | Elevation |
|---|---|
| Tuesday |
Freezing Level ' |
| Tuesday Night |
Snow Level ' |
| Wednesday - Wednesday Evening |
Snow Level ' |
| Wednesday Night |
Snow Level ' |
| Mt. Hood | Elevation |
|---|---|
| Tuesday |
Freezing Level 11000' |
| Tuesday Night |
Snow Level 6500' |
| Wednesday - Wednesday Evening |
Snow Level 7000' |
| Wednesday Night |
Snow Level 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.
Precipitation Forecast
| Thursday | Thursday | |
|---|---|---|
| Hurricane Ridge | LT 0.10 | LT 0.25 |
| Mt Baker Ski Area | LT 0.10 | 0.50 - 0.75 |
| Washington Pass | LT 0.10 | LT 0.25 |
| Stevens Pass | LT 0.10 | 0.25 - 0.50 |
| Snoqualmie Pass | LT 0.10 | 0 - 0.50 |
| Mission Ridge | LT 0.10 | LT 0.10 |
| Crystal Mt | LT 0.10 | LT 0.25 |
| Paradise | LT 0.10 | 0.50 - 0.75 |
| White Pass | LT 0.10 | LT 0.25 |
| Mt Hood Meadows | LT 0.10 | 0.75 - 1.00 |
| Timberline | LT 0.10 | 0 - 1.00 |
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 PDT Tuesday, March 10, 2015
Free Winds at 5000' (mph)
| Hurricane Ridge | Mt. Baker | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Tuesday Morning | S 0 - 10 | SSW 5 - 15 | SSW 5 - 15 | --- - | S 5 - 15 |
| Tuesday Afternoon | S 10 - 20 | S 5 - 15 | SSW 5 - 15 | --- - | SW 10 - 20 |
| Tuesday Night - Wednesday Night | SW 15 - 25 | SW 15 - 25 | SW 15 - 25 | --- - | SW 15 - 25 |
| Hurricane Ridge | Elevation |
|---|---|
| Tuesday Morning | S 0 - 10 |
| Tuesday Afternoon | S 10 - 20 |
| Tuesday Night - Wednesday Night | SW 15 - 25 |
| Mt. Baker | Elevation |
|---|---|
| Tuesday Morning | SSW 5 - 15 |
| Tuesday Afternoon | S 5 - 15 |
| Tuesday Night - Wednesday Night | SW 15 - 25 |
| Stevens and Snoqualmie Pass | Elevation |
|---|---|
| Tuesday Morning | SSW 5 - 15 |
| Tuesday Afternoon | SSW 5 - 15 |
| Tuesday Night - Wednesday Night | SW 15 - 25 |
| Mt. Rainier | Elevation |
|---|---|
| Tuesday Morning | --- - |
| Tuesday Afternoon | --- - |
| Tuesday Night - Wednesday Night | --- - |
| Mt. Hood | Elevation |
|---|---|
| Tuesday Morning | S 5 - 15 |
| Tuesday Afternoon | SW 10 - 20 |
| Tuesday Night - Wednesday Night | SW 15 - 25 |
| Hurricane Ridge | Direction - Speed |
|---|---|
| Tuesday Morning | S 0 - 10 |
| Tuesday Afternoon | S 10 - 20 |
| Tuesday Night - Wednesday Night | SW 15 - 25 |
| Mt. Baker | Direction - Speed |
|---|---|
| Tuesday Morning | SSW 5 - 15 |
| Tuesday Afternoon | S 5 - 15 |
| Tuesday Night - Wednesday Night | SW 15 - 25 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Tuesday Morning | SSW 5 - 15 |
| Tuesday Afternoon | SSW 5 - 15 |
| Tuesday Night - Wednesday Night | SW 15 - 25 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Tuesday Morning | --- - |
| Tuesday Afternoon | --- - |
| Tuesday Night - Wednesday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Tuesday Morning | S 5 - 15 |
| Tuesday Afternoon | SW 10 - 20 |
| Tuesday Night - Wednesday Night | 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.
Free Winds at 9000' (mph)
| Mt. Baker | Washington Pass | Stevens to Snoqualmie Pass | Mt. Rainier | Mt. Hood | |
|---|---|---|---|---|---|
| Tuesday Morning | W 10 - 20 | W 10 - 20 | W 10 - 20 | --- - | SW 5 - 15 |
| Tuesday Afternoon | SW 20 - 30 | SW 15 - 25 | SW 10 - 20 | --- - | SW 25 - 35 |
| Tuesday Night | SW 25 - 35 | SW 30 - 40 | WSW 30 - 40 | --- - | SW 30 - 40 |
| Wednesday | SW 25 - 35 | SW 10 - 20 | SW 10 - 20 | --- - | SW 25 - 35 |
| Wednesday Night | SW 25 - 35 | WSW 30 - 40 | W 30 - 40 | --- - | W 25 - 35 |
| Mt. Baker | Direction - Speed |
|---|---|
| Tuesday Morning | W 10 - 20 |
| Tuesday Afternoon | SW 20 - 30 |
| Tuesday Night | SW 25 - 35 |
| Wednesday | SW 25 - 35 |
| Wednesday Night | SW 25 - 35 |
| Washington Pass | Direction - Speed |
|---|---|
| Tuesday Morning | W 10 - 20 |
| Tuesday Afternoon | SW 15 - 25 |
| Tuesday Night | SW 30 - 40 |
| Wednesday | SW 10 - 20 |
| Wednesday Night | WSW 30 - 40 |
| Stevens and Snoqualmie Pass | Direction - Speed |
|---|---|
| Tuesday Morning | W 10 - 20 |
| Tuesday Afternoon | SW 10 - 20 |
| Tuesday Night | WSW 30 - 40 |
| Wednesday | SW 10 - 20 |
| Wednesday Night | W 30 - 40 |
| Mt. Rainier | Direction - Speed |
|---|---|
| Tuesday Morning | --- - |
| Tuesday Afternoon | --- - |
| Tuesday Night | --- - |
| Wednesday | --- - |
| Wednesday Night | --- - |
| Mt. Hood | Direction - Speed |
|---|---|
| Tuesday Morning | SW 5 - 15 |
| Tuesday Afternoon | SW 25 - 35 |
| Tuesday Night | SW 30 - 40 |
| Wednesday | SW 25 - 35 |
| Wednesday Night | W 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: 7:53 AM PDT Tuesday, March 10, 2015
Extended Weather Synopsis for Thursday night through Thursday
Leftover showers should diminish during the day Thursday as upper level ridging re-establishes itself along the coast-line. However, a weak disturbance passing into British Columbia Thursday may keep additional clouds around and stunt the clearing trend for the Olympics and north/central WA Cascades.
Friday should be dry and mild... but high clouds ahead of a more powerful weather system will pass through the area. Forecast models are in decent agreement that moisture along a frontal band should be pumped into the region in mild SW flow beginning Friday night with precipitation increasing Saturday. While this should be most significant weather event so far in March, the snow levels will once again be on the high side, a story told many times over this winter.
Extended Weather
Olympics, Washington Cascades and Mt. Hood area
Thursday MorningMostly cloudy with rain and snow showers.
Thursday AfternoonPartly to mostly cloudy with scattered rain and snow showers north part. Partly to mostly sunny with isolated rain and snow showers south part.
Thursday Night - FridayPartly to mostly cloudy with high clouds. Mild.
Friday NightLight rain and snow developing Olympics and north Cascades.
SaturdayModerate rain and snow, especially west slopes of the Cascades. Mild.
Extended Snow/Freezing Levels
| Mt. Baker | Snoqualmie Pass | Mt. Hood | Easterly Flow * | ||
|---|---|---|---|---|---|
| Thursday | Snow Level | 5500' - 6500' | 5500' - 6500' | 6000' - 7000' | |
| Thursday Night - Friday | Freezing Level | 7500' - 9000' | 8000' - 9500' | 10000' - 11000' | |
| Friday Night - Saturday | Snow Level | 6000' - 7000' | 7000' - 8000' | 7500' - 8500' |
| Mt. Baker | Elevation |
|---|---|
| Thursday |
Snow Level 5500' - 6500' |
| Thursday Night - Friday |
Freezing Level 7500' - 9000' |
| Friday Night - Saturday |
Snow Level 6000' - 7000' |
| Snoqualmie Pass | Elevation |
|---|---|
| Thursday |
Snow Level 5500' - 6500' |
| Thursday Night - Friday |
Freezing Level 8000' - 9500' |
| Friday Night - Saturday |
Snow Level 7000' - 8000' |
| Mt. Hood | Elevation |
|---|---|
| Thursday |
Snow Level 6000' - 7000' |
| Thursday Night - Friday |
Freezing Level 10000' - 11000' |
| Friday Night - Saturday |
Snow Level 7500' - 8500' |
* 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 9, 2015
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