Just FYI- at least around the basin there was a good amount of wind and I was able to cut a couple of very small slabs in steeper terrain, nothing unmanageable inbounds though.
EDIT:
Today's update if anybody stopped checking...
This is Spencer at the Colorado Avalanche Information Center at 1:30 pm, Friday, April 29, 2005.
DISCUSSION
Cool, wet, unsettled weather continues into next week as a series of moist short-waves keep skies cloudy and snow showers falling, especially in the N mtns. A ridge building over the West Coast will keep us under NWerly flow into Sunday. Late Saturday afternoon a stronger shortwave crosses CO, with potentially heavy snowfall until midnight or later. Sunday should dawn cloudy, but without too many flakes falling until the afternoon. Looks like another shortwave pulse Sunday afternoon into Monday. The weather models keep temperatures below freezing at 10,000', so the rain line should not get too high, and powder remain on shaded aspects near treeline.
Northern Mountains
Fri Night: Cloudy, showers 1-3". Winds W/20-30. Lows 15-25.
Saturday: Cloudy, afternoon showers 1-3". Winds W/20-30. Highs 25-35.
Sat Night: Cloudy, showers add'l 1-3" tapering off after midnight. Winds W/20-30 G45+. Lows 15-25.
Vail and Berthoud Passes will be at the upper end of the ranges given. Add several more inches for the mountains north of I-70.
Central Mountains
Fri Night: Cloudy, showers, 0-3". Winds WNW/15-25. Lows 15-25.
Saturday: Cloudy, afternoon showers 0-3". Winds NW/15-25. Highs 22-32.
Sat Night: Cloudy, showers add'l 1-3". Winds W/10-20. Lows 14-24.
Southern Mountains
Fri Night: Cloudy, scattered showers 0-2". Winds NW/10-20 G30s. Lows 15-25.
Saturday: Cloudy, afternoon showers 1-3". Winds W/10-20 G30s. Highs 30-40.
Sat Night: Cloudy, isolated showers 0-2". Winds W/10-20. Lows 17-27.
SNOWPACK
The backcountry avalanche danger ratings from us are over for the season. With fewer observers and folks out playing, not many observations are coming in. There have been some human-triggered avalanches and several sizable naturals reported. Get out and enjoy the April powder, but the upper snowpack still thinks it is winter, with colder snow and windslabs. Treat it like is winter, and pay attention to steep windloaded slopes and gullies.
The N mtns have done pretty well out of these storms, and the powder is riding great. Near and above treeline, the upper snowpack has returned to winter. Snowfall has been accompanied by winds, with plenty of snow blowing around above treeline. This has formed some slabs. The Berthoud Falls slide path ran for the second time this week, with a 4' deep, 450' wide fracture. Observers have reported easy to moderate shears in the new snowpack, and a few sensitive slabs. Other spots, the recent snow is bonding well. Pay attention to the snowpack where you are and above.
In the C and S mtns, snow totals have not been as great, meaning shallower slabs. Some sizable natural activity reported in the western San Juans. A skier triggered and was caught in a shallow, 1' deep, but 300' wide slide an E aspect near Molas Pass. If the sun peeks through the clouds, the snowpack surface will heat up quickly, and some loose activity will occur. This will be more of a problem below treeline, but sunny aspects above treeline are not immune.
With temperatures hovering around freezing, there could be drizzle or rain falling on the snowpack at lower elevations. I never like touring in the rain, and it can quickly raise the potential for wet slides.
We will be issuing afternoon updates through the weekend.
Last edited by lemon boy; 04-29-2005 at 01:52 PM.
"It is not the result that counts! It is not the result but the spirit! Not what - but how. Not what has been attained - but at what price.
- A. Solzhenitsyn
Bookmarks