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Location Information

City
Dillon
State
Colorado
Country
United States
Keystone Resort Keystone Resort Hot
15+ day computer snowfall prediction (longer range can be dicey)
Short Range Forecast Discussion

->This free forecast is brought to you courtesy of Aspen-Snowmass Resort<-
Short Range Forecast Discussion - Updated for Friday, December 19, 2014 - Today and Saturday we see upper-level high pressure ridging build in some (weak), Colorado mostly snow free. Northern areas, especially east of Vail Pass and north of I-70 are still looking at potentially the biggest snow storm of the season, just in time for Christmas week. This is due to some moisture laden storms clipping the area out of the northwest Sunday and Monday, and multiple feet of snow possible, especially along the divide and northwest facing slopes. We expect Aspen-Snowmass to see moderate to heavy snow Sunday and Monday as winds increase quite a bit, and deep moisture is pushed across the mountain barriers. Mid and upper level instability increases mainly later Sunday through early Monday, and this is when the heaviest snow is expected. A strong cold front moves through on Monday. Snow clears out slowly Tuesday morning as low pressure moves out and high pressure builds in briefly. We expect no snow through Wednesday, then snow moves in Wednesday night and mainly Christmas day, possibly significant again. Conditions will really improve.
Buying discounted lift tickets through this link will support this website and help keep the short and long range forecasts going-> Get Discount lift tickets here and save up to 80%
(please see the longer range forecasts toward the bottom of this page) CM

Do you want to keep track of the US and southwest Canada snowpack? Check here >.
12,408 ft
9,280 ft
3,128 ft
3+mi
RESORT INFO ↑15° ↓6° ↑31° ↓8°
  • Last Update 20 Dec @ 05:12
  • Snow Past 24 Hours 0 in
  • Snow Past 48 Hours 2 in
  • Season Total 78 in
  • Average Base Depth 26 in
Comments
12in, past 7 days. Snow surface is packed powder and machine groomed.
Today's Snow Potential
Snow Sunday morning (please see Sunday's forecast totals)
What's Open?
  • Trails83 of 135
  • Lifts19 of 20
  • Acreage2250 of 3148 (71%)
Other Info
  • Groomed Night Ski Trails58 (70%)
20 Saturday ↑15° ↓6° ↑31° ↓8°
Sky Condition
Partly cloudy and milder, becoming mostly cloudy by afternoon. Cloudy overnight with snow showers developing early Sunday.
Precipitation
50% chance for snow toward Sunday morning
Snow Potential
Snow Sunday morning (please see Sunday's forecast totals)
Wind
Base; Variable at 4-12mph, becoming NW at 5 to 15mph. Above timberline; NW at 10 to 20 gusts to 30mph.
21 Sunday ↑14° ↓5° ↑28° ↓13°
Sky Condition
Cloudy and not as cold, with numerous snow showers, heavy at times mainly late day through overnight, and with gusty winds (large areas of blowing snow and low visibility).
Precipitation
Snow definite
Snow Potential
8 to 13 inches of snowfall
Wind
Base; W at 5-15mph, becoming N/ NW at 15 to 25 gusts to 35mph. Above timberline; Increasing to W/ NW at 35 to 45 gusts to 60mph.
22 Monday ↑13° ↓4° ↑26° ↓12°
Sky Condition
Cloudy and becoming progressively colder, with scattered to numerous snow showers, heavy at times, and with gusty winds (large areas of blowing and drifting snow).
Precipitation
Snow definite
Snow Potential
8 to 13 inches of snowfall
Wind
Base; W at 10-20mph, becoming NW at 20 to 30 gusts to 40mph. Above timberline; Increasing to NW at 40 to 50 gusts to 70mph.
23 Tuesday ↑5° ↓-4° ↑20° ↓5°
Sky Condition
Mostly cloudy and colder, with lingering snow showers early. Skies clear to partly cloudy during the day, and winds continue gusty.
Precipitation
40% chance for snow early
Snow Potential
A trace to 1 inch of snowfall early
Wind
Base; NW at 5-15mph, becoming NW at 15 to 25 gusts to 35mph. Above timberline; Increasing to NW at 30 to 45 gusts to 60mph.
24 Wednesday ↑13° ↓-1° ↑29° ↓3°
Sky Condition
Partly cloudy and milder, with less wind (but still gusty) and no snow. Snow develops after midnight.
Precipitation
40% chance for snow after midnight
Snow Potential
Snow on Thursday
Wind
Base; Variable at 4-12mph, becoming NW at 10 to 20mph. Above timberline; Increasing to NW at 20 to 30 gusts to 40mph.
25 Thursday ↑27°  -3c° ↓10°  -12c° MID MTN
Sky Condition
Mostly cloudy with a chance for snow
Precipitation
40% chance for snow. (Potential precip: 0.07in, 1.87mm)
Snow Potential
We are expecting a trace to 1 inch of snowfall (1 to 3cm)
Wind
From the WSW at 7 to 9 MPH.
Long Range Forecast Discussion:

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7 day to 2 week+ forecast (since 1998) - 25 December to 04 January, 2014 - COLORADO/ NEW MEXICO: All next week (22nd onward) we expect a more favorable northern storm track (all Christmas week), for better chances of better than light, and more powdery/ cold snow, due to the colder storm origins from out of the Gulf of Alaska and crossing Canada on the way in. After Christmas week and toward the end of 2014, we expect storm-blocking higher pressure ridging to build in across the area, with more sunshine and less potential for any snow. NORTHWEST US and SOUTHWEST CANADA: High pressure pushes in across the area from the southwest US and eastern Pacific much of Christmas week, with some tail ends of storms (warmer southern portion) moving through, causing rain showers and higher elevation snow showers, with mostly rain at and below ski resort base elevations (snow level issues, rain mix at base elevations) across the Pacific Northwest including north Idaho ski resorts. Southwest Canada (Alberta/ British Columbia) should see less snow level issues and more snow potential than Inland Northwest ski resorts, all through Christmas week. It looks like the Inland Northwest may see a white Christmas, showing up a day or so before Christmas in the form of a colder storm (Christmas eve/ Christmas snow for Coeur d'Alene/ Spokane). SOUTHWEST US AND SOUTHERN CALIFORNIA; Mostly dry with high pressure ridging dominating for Christmas week and possibly through the end of the year. This outlook includes southern California resort areas like Mountain High. UTAH looks like it may get clipped (northern Utah) Christmas day (or the day before/ day after), but mostly sunny skies may dominate all week under high pressure. WYOMING/ MONTANA We expect high pressure to set up across the southwest US, with storms again targeting the Pacific Northwest/ southwest Canada, and Wyoming/ Montana, for a nice freshen up of colder snow and temperatures before the major holiday, and during it. CM

Longer Range Outlook

December 2014, we are in a weak El Nino Sea Surface Temperature pattern across the Equatorial Eastern Pacific. (prior forecast-->) Sea Surface Temperature Anomalies yield a weak El Nino pattern across the eastern Equatorial Pacific (El Nino development is on track, but it will be weak, still somewhat favorable for California (Tahoe-Mammoth/ SoCal) and the desert Southwest, plus southwest Colorado and northern New Mexico).

Current SST pattern- El Nino

A weak El Nino (or possible "neutral" pattern) is expected for this winter, into early 2015.

Current SST pattern- El Nino

Northwest US areas, and southwest Canada, along with northern Colorado through Wyoming and the northern Rocky Mountains, should expect a drier than average, or near average snowfall winter (2014-2015). Tahoe/ Mammoth should see near average snowfall, with near average snowfall also expected across southern California and northern Arizona resorts. CM

Keystone is home to three magnificent mountain playgrounds—Dercum Mountain, North Peak, and The Outback. There’s something special for every skier and rider of any level at each mountain. There are more than 3,000 vertical feet and over 3,000 acres of bumps and bowls, glades and steeps, groomers and rollers to be experienced.

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