Mountain Weather February 15, 2015

CB Avalanche CenterWeather

Date:

The weather is changing as we’ll be on the edge of two shortwave disturbances. Forecasts have been jumping around on their estimated track of these shortwaves and how they track will determine weather or not we see much snow. Currently the first disturbance will mostly affect Northern Colorado on Sunday night. The 2nd disturbance arriving Monday looks better as it pushes farther south into Colorado, but favors the mountains to our east and mostly affecting the Continental Divide. Both of these shortwaves are arriving on Norwest flow, so we may luck out with some better orographic snow in the mountains west of Crested Butte. We’ll see increasingly clouds today and decreased high temperatures during this period.

Crested Butte Area

CBAC2014-15 Observations

NAME: JSJ
DATE: 2015.02.14
LOCATION:  Wash Gulch Zone
ELEVATION:  9,400-10,500′
ASPECT: NE
Weather: clear, calm, HOT !

Snowpack / Avalanche Obs: HS ranged from 50-120cms. Buried SH found roughly 20cms below surface and reactive to shovel tilt tests with moderate force and sudden planar fracture character. Not reactive in compression tests, as it would just become embedded in soft snow above upon compression force. Overall snowpack is mostly all facets F-4F hard. Moist and wet snow surfaces on open Northerly slopes. Dry snow holding on in dark timber on Northerlies

Crested Butte Area

CBAC2014-15 Observations

NAME: Donny
DATE: 15-02-14
LOCATION: Wash Gulch Trailhead
ELEVATION: 9400’ – 9800′
ASPECT: E


WEATHER: Clear, calm and warm – 35ºF @ 1000 and 47ºF @ 1500

SNOWPACK/AVALANCHE OBS: Traveled in meadow and lower slopes.  Three big whumpfs in meadows.  We could feel the drop and the crack was visible nearly all the way around us.  Ski pen would go from 5-10cm to bottomless trap door conditions.

Brush Creek

CB Avalanche Center2014-15 Observations

LOCATION: Brush Creek Area
DATE OF OBSERVATION: 02/14/2015
NAME: ADB
SUBJECT:
ASPECT:
ELEVATION: BTL/NTL

AVALANCHES: Observed a few N-LW-R2-D2 avalanches emanating below cliff bands on south west slopes. Slides likely occurred within the past week. One slide traveled about 800 feet in a gully. The snow from that slide piled up high.

WEATHER: Mostly sunny skies and calm. Very warm.

Axtell

CB Avalanche Center2014-15 Observations

LOCATION: Kebler Pass Area
DATE OF OBSERVATION: 02/14/2015
NAME: Havlick
SUBJECT: Axtell
ASPECT: N, NE, SE, S, NW
ELEVATION: 9400-11500

AVALANCHES: none. small facet sluff behind 3rd skier.

WEATHER: warm, light NW breeze for evaporative cooling, occasional saltation of facets across snow surface. Measured 47ºF during lunch at 1400hrs at Green Lake.

SNOWPACK: AVALANCHE / SNOWPACK OBS: Interesting and terrifying snowpack structure on N-facing apron below north facing aprons. Dug mid apron and found 10mm SH, 45cm deep, below P-1F hard slabs, with P+ bed surface. Almost pulled plug right there, but continued skintrack traverse, spread out, had guests turn music off they were listening to, and continued 30m to windbuff and old debris, with no SH. Within wider coulior, snow remained turned-able, and pretty much F+ facets to ground. Wallow-fest. South facing slope, climbing back out was punchy and unconsolidated until you hit crusts 30cm deep and several more a but deeper. Wet, mature corn grains on surface. If not for various crusts, and old sled tracks, would have been more spooked.

Mountain Weather Forecast for Saturday, February 14th, 2015

CB Avalanche CenterWeather

Date:

Okay! Now we’re talking… There is hope. We will see another very warm day with clear skies and light winds. Temperatures near 11,000ft look to approach 45ºF today, ahead of a colder disturbance clipping our area Sunday and Monday. The models were once showing the ridge centered farther East, shunting any moisture from reaching us, now centers it farther west, allowing cold, moist air to create some snow potential Sunday evening and Monday. Still quite a lot of uncertainty, and time will tell.

Mount Emmons Observations

CB Avalanche Center2014-15 Observations

LOCATION: Kebler Pass Area
DATE OF OBSERVATION: 02/13/2015
NAME: Nunez
SUBJECT: Mount Emmons Observations
ASPECT: SE, S, SW, NW
ELEVATION: 9400-12000

WEATHER: Clear, Cool in am. Warm in pm. Overall mostly light to moderate winds from NW, vary warn while in the in the basins and light wind while on the ridgeline.

SNOWPACK: No new Wet loose slides where viewed from ridgeline, Bootpen on S slopes was 20-30cm. On NE slopes SH buried 20cm 20°

Absurduary: A look at our warm and dry start to 2015.

CB Avalanche CenterAvi Blog, Avi-Off-Season

CBAC Forecaster Zach Guy.  
February 12, 2015

In the past few weeks, I’ve seen streams emerge from high elevation basins, sunny slopes melt back to complete dirt, and a migration of locals towards the desert for mountain biking or sun bathing.  I’ve only lived in Crested Butte for four years, but this pattern seems so absurd for a high Rockies mountain town at 9,000 feet in elevation, that I dug into some historical weather to see how unusual this weather has been.

Since the New Year, we’ve been plagued by both snowfall drought and unseasonably warm temperatures.  The temperatures have been the greatest anomaly this winter.  billy barr in nearby Gothic has an exceptional record of temperatures and snowfall dating back to 1974 (www.gothicwx.org).  As of Friday, February 12th, 17 out of our 43 days this year have seen record-breaking high temperatures.  There have only been two days in February that didn’t break a temperature record, and we are currently going on 8 days in a row of record high temps. I expect the next two days will break records too.  On February 6th, the temperature hit 52 degrees F, which was a full month earlier than we’ve ever seen temps reach into the 50’s.  I think my brother in Florida is having a colder winter right now.

Looking towards Red Lady Bowl and some dirt slopes down lower.  Last year on this date, I dug a pit on a similar slope as that dirt slope in the foreground and found a 2 meter deep snowpack.


Snowfall droughts this time of year aren’t quite as unusual as the temperatures we’ve seen.  I looked at both Gothic snowfall and records from the town of Crested Butte, which date back to 1962.  (http://www.crestedbutte-co.gov)  In Crested Butte, where the average snowfall in January is 41.6”, we got 10.6” of snow last month.  There have only been four other January’s that saw less snowfall in the past 52 years.    February is off to a rough start as well, with only a few inches.  If it makes you feel any better, the winter of ’76-’77 only saw a total of 3” of snow from December through February in Crested Butte.  Too bad they didn’t have fat bikes back then. Gothic has fared marginally better on snowfall.  They saw 27” in January, which is 41% of average and the 8th lowest January on record.  Gothic picked up 6” in February, which is on pace to come up at 21% of the 70” average for February. Thanks to a healthy November and December, Schofield Pass SNOTEL is sitting at 67% of mean (3rd lowest snowpack in its 30 year record), and the Mt. Crested Butte SNOTEL is at 80% of its mean.

As someone who loves the winter, I can’t help but feel gloomy over the past couple months.  However, models keep hinting at a pattern change coming later this month or in March, for the warm and dry high pressure ridge to shift west and put us back into the storm track.  We’ll see…  And also worth noting, the horrible snow year of ’76 to ’77, which was the lowest on record at 61” in Crested Butte, was followed the next winter by the highest snowfall on record, at 381”.  I’ll stick around next winter to see what happens!

Looking towards Mt. Crested Butte.  Looks more like late April than early February.

Mountain Weather for Friday, February 13th, 2015

CB Avalanche CenterWeather

Date: 02/13/2015

Today, look for mostly clear skies, light winds, and temperatures pushing 40 degrees.

The Baja Low has re-established itself over, well, Baja once again…and that damn high pressure has strengthen over the western half of the United States…again. But…there is a war being waged in the Gulf of Alaska, as a firehose of Pacific moisture is bombarding the dome of high pressure and something has to give eventually. Early next week..the good guys finally prevail, and moisture begins to sneak its way into the Great Basin, along with colder temperatures. This may be the beginning of a larger scale pattern change…but we’ll humbly oblige with a few inches of snow to get things going around Tuesday.

Mountain Weather February 12, 2015

CB Avalanche CenterWeather

Date: 02/12/2015

About this date last year my back blew out from shoveling out from our 10-day huge storm. This year, my back is only slightly irritated from the sunburns from lounging on my deck. Its little things like this we can be thankful for as high pressure takes hold through the rest of the week, bringing a few clouds and slightly cooler temperatures than we’ve grown accustomed to. Don’t give up hope though, because models are agreeing on a return to active, winter weather around Sunday or Monday. Better late than never, February.