Aspen Mountain - Ajax (Base: 7,945', Top: 11,212')
6-day Forecast Discussion Updated for Wednesday, September 8, 2010*Aspen-Snowmass Resort is a sponsor of this forecast, please thank them if you get a chance*
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AVERAGE TEMPERATURES FOR THIS TIME OF YEAR;
-At about 8,000 feet (Aspen): Low 42, High 72 (Highest ~ 86 in 1998, Lowest ~ 32+ in 2001)
-At about 10,000 feet (Near base elevation for Keystone, Breckenridge, Winter Park); Low 33, High 66 (Highest ~ 80 in 1978, Lowest ~ 25+ in 2001)
-At 12,500 feet (Near the top elevation of many resorts in Colorado); Low 30, High 55
::: SHOWERS :::
SUMMARY FOR THE WEEK -//> UPDATED FOR WEDNESDAY, SEPTEMBER 8th at 6:27am...Today --SCATTERED SHOWERS AND THUNDERSTORMS-- -> Strong low pressure continues across the western US, with a jet stream cutting across Utah and northwest CO, some instability, and decreasing moisture that was pulled up from the southwest. We expect isolated to scattered showers and thunderstorms on a relatively cool and mostly cloudy day.
Thursday and Friday --COOLER, WINDS INCREASE, CHANCE FOR SHOWERS AND HIGH ELEVATION SNOW-- -> The second low pressure system that was digging south across California moves eastward into/ across Colorado and weakens as it does, with cool showers and a chance for high elevation (roughly 10,000 feet+) snow on Thursday. Snow levels drop to near 9,000 feet into Friday morning as the low crosses Colorado, and a dusting of snow is possible.
Saturday and Sunday --WARMER, MOSTLY SUNNY-- -> An upper level ridge of high pressure builds in, with warming temperatures and mostly sunny skies. We will have to watch for potential afternoon thunderstorms as moisture may seep in from the south (in general, low pressure remains across the northwest US). CM
Thursday Sep 09, 2010
Hi 69°f / 50°f (base/top)
Lo 47°f / 34°f (base/top)
Sky Condition:
Partly cloudy and mild, with isolated showers and thunderstorms possible at any time, mainly after noon (snow above 10,000 feet). Colder overnight, with snow levels dropping to near 8,500 feet, and isolated showers still possible.
Precipitation:
20% chance for showers. Snow levels start near 10,000, dropping to 8,500 feet.
Snow Potential
No accumulation expected.
Wind:
Increasing to SW at 10 to 20 gusts to 30mph by afternoon. Winds above timberline; Increasing to SW at 30 to 45 gusts to 65mph.
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Friday Sep 10, 2010
Hi 61°f / 42°f (base/top)
Lo 36°f / 26°f (base/top)
Sky Condition:
Partly cloudy and cooler, with isolated showers possible mainly in the morning (snow level near 8,500 feet). Clouds start clearing after the morning hours, with west winds continuing.
Precipitation:
20% chance for showers early.
Snow Potential
No accumulation expected.
Wind:
W at 10 to 20 gusts to 25mph. Winds above timberline; W at 20 to 30 gusts to 40mph.
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Saturday Sep 11, 2010
Hi 67°f / 47°f (base/top)
Lo 31°f / 29°f (base/top)
Sky Condition:
Mostly clear, cool (but warmer), and drier with breezy conditions continuing.
Precipitation:
None expected.
Snow Potential
None expected.
Wind:
S/ W at 5 to 15mph by afternoon. Winds above timberline; SW at 15 to 25 gusts to 35mph.
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Sunday Sep 12, 2010
Hi 58°f / 14°c (base)
Lo 37°f / 3°c (base)
Sky Condition:
Mostly Sunny
Precipitation:
None expected
Wind:
W at up to 5 mph.
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Monday Sep 13, 2010
Hi 57°f / 14°c (base)
Lo 38°f / 3°c (base)
Sky Condition:
Mostly Sunny
Precipitation:
None expected
Wind:
WSW at up to 10 mph.
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Tuesday Sep 14, 2010
Hi 56°f / 13°c (base)
Lo 39°f / 4°c (base)
Sky Condition:
Partly Cloudy
Precipitation:
None expected
Wind:
WSW at up to 5 mph.
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Long range forecast / discussion...September 13 to 16--High pressure aloft and warming temperatures continue into next week. By Mid-September, we may (still) see a stronger early season Gulf of Alaska low pressure system develop across the northwest US and push through Colorado with another reminder of fall, in the form of light snow potential above 9,000 feet mainly. We likely see several+ days of warming and tranquil weather, followed by stronger low pressure possible after the 20th of September (it is common for storms to be progressively stronger and colder as we get deeper into the late summer and fall).
A La Nina SST pattern (gaining strength) is here for the fall/ winter, through possibly the season following (through 2012). This usually bodes well for northern Colorado resorts, but we will work up some comparisons of analog years this summer to see what we may expect. CM
