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White Pass Ski Area (Base: 4,500', Top: 6,000')

6-day Forecast Discussion Updated for Sunday, March 14, 2010

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The following discussion applies to Southwestern British Columbia, including Whistler Blackcomb, Hemlock and Mt. Cain; along with the Cascades of Washington including Mt. Baker, Stevens Pass and Badger Mtn.

The last half of this weekend looks quieter than the past few days, as we have a weak frontal system draped along the coast; but most of the precipitation will be along the coast and just offshore.  I am holding on to slim chances for light snow showers in British Columbia later today towards tonight with perhaps an inch or two of accumulation and snow levels near 3000'.  Most of Washington will just see cloudy skies prevail and an isolated flurry or two possible.  The quieter weather won't last long as a stronger front approaches on Monday.  An area of low pressure will form off the coast of Oregon as well and head up the coast the following 48 hours towards central B.C.  With the circulation around the low, much warmer air will filter into the region Monday and Tuesday before a cold front sweeps through on Wednesday.  Therefore, expect snow levels to climb dramatically to near 5000' in B.C. on Monday and 6000' in Washington.  Tuesday will have similar levels but by the afternoon and evening the levels will drop quickly down near 3000' by Tuesday night.  Snow will begin Monday and pick up during the overnight hours into Tuesday with moderate snows possible on Tuesday.  Accumulations will range from 2"-4" in B.C. above 5000' on Monday, to an inch or two above 6000' in Washington on Monday.  Tuesday we will see 8"-12" above 5000' in both regions with 3"-5" between 3000' and 5000'.

 By Wednesday, colder air will have briefly built in so snow levels will be near 3000' and an additional 2"-4" will be possible behind the front as the snow tapers off by the afternoon hours.  As we head towards Thursday and Friday, a ridge of high pressure begins to build back in allowing for drier weather and temperatures and corresponding snow levels to rise as well.  To see if that will last into the weekend, please see below in our long range outlook.

BT

Sunday
Mar 14, 2010

Mostly Cloudy

Hi 45°f / 7°c (base)
Lo 29°f / -2°c (base)

Sky Condition:
Mostly Cloudy

Precipitation:
None expected

Snow Potential

Wind:
SE at up to 10 mph.

Monday
Mar 15, 2010

Mostly Cloudy with Isolated Showers

Hi 45°f / 7°c (base)
Lo 34°f / 1°c (base)

Sky Condition:
Mostly Cloudy with Isolated Showers

Precipitation:
Slight Chance (20%) of rain showers (0.254 mm. | 0.01 in.)

Snow Potential

Wind:
SE at up to 10 mph.

Tuesday
Mar 16, 2010

Light Snow Likely

Hi 42°f / 6°c (base)
Lo 27°f / -3°c (base)

Sky Condition:
Light Snow Likely

Precipitation:
50% Chance of snow

Snow Potential

Wind:
WSW at up to 10 mph.

Wednesday
Mar 17, 2010

Chance of Light Snow Showers

Hi 36°f / 2°c (base)
Lo 25°f / -4°c (base)

Sky Condition:
Chance of Light Snow Showers

Precipitation:
40% Chance of snow

Snow Potential

Wind:
W at up to 5 mph.

Thursday
Mar 18, 2010

Partly Cloudy

Hi 43°f / 6°c (base)
Lo 28°f / -2°c (base)

Sky Condition:
Partly Cloudy

Precipitation:
None expected

Snow Potential

Wind:
NW at up to 10 mph.

Friday
Mar 19, 2010

Mostly Sunny

Hi 42°f / 6°c (base)
Lo 28°f / -2°c (base)

Sky Condition:
Mostly Sunny

Precipitation:
None expected

Snow Potential

Wind:
SE at up to 10 mph.

Long range forecast / discussion...March 20 to 22

High pressure will  keep us dry for the first half of this period.  By the latter half of the 21st, I expect the ridge to begin to break down allowing for weak Pacific disturbances to roll in along a zonal flow.  This will bring some light snow chances to the region late on the 21st and into the 22nd as well.
BT


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