#snowpack-stability

#snowpack-stability

Researchers have known since at least 2008 that wildfires can create chromium-6, but a new study, published in the journal Environmental Science and Technology in November, is the first to report details such as how long it might persist in groundwater.

Timberline is the clear winner for open terrain with around 7-9 inches, while Mt. Bachelor picks up 4-5 inches but remains closed. Most Washington resorts look too warm or too dry for meaningful new snow.

The ongoing Sunday night into Monday storm across the central Andes keeps producing mainly upper-mountain snow through Monday before tapering out by Tuesday morning, April 21. A realistic near-term outcome is about 16-20 cm at Las Leñas, 9-11 cm at Valle Nevado, and lighter 5-8 cm amounts around El Colorado, La Parva, and Portillo.

Camelback Mountain has achieved its longest season in history, remaining open with a 10-foot base despite recent warm temperatures. The conditions were soft, slushy, and surfy, typical of spring skiing.

Avalanches kill about 100 people in Europe each year, with vast masses of ice, snow and rock regularly crashing down on hikers and skiers who have been caught unawares. The structure of the snow, angle of the slope and variation of the weather can dictate whether a gentle disturbance like a gust of wind or the glide of a snowboard can trigger a deadly shift in the mountain.

The ongoing storm is expected to add 13-16 cm at Banff Sunshine and around 4-5 cm at Lake Louise by Friday morning, with the deepest moisture focused on Alberta.

From Sunday afternoon through Tuesday night, the guidance lines up on a prolonged South Island storm cycle. Timing confidence is good, with snow pushing in Sunday afternoon and ramping hard Sunday night.

To get back to average snowpack, we essentially need to have the most snow that we've ever had for the last 30 years between now and mid-April. It would be extremely difficult for Colorado to get back to a normal/average snowpack. As an example, when looking at the Independence Pass SNOTEL site in central Colorado outside of Aspen, we typically have 13 inches of snow-water-equivalent at the end of February. This year, we only have 6.7 inches of SWE.

The midweek stretch looks like the most reliable window for fresh turns, with the steadiest snow lining up Wednesday night into Thursday and lighter add-ons into Friday. Snow levels run a little high early, then step down late week, so snow quality should improve as the storm cycle matures. Some areas could see the next wave begin as early as Sun night (02/15), but confidence drops quickly with lead time and placement.

This image, acquired with the MODIS (Moderate Resolution Imaging Spectroradiometer) on NASA's Terra satellite, provides a wide view of meager western snow cover on January 15. On that day, measurements derived from satellite observations showed that snow blanketed 142,700 square miles (369,700 square kilometers) of the west. That's the lowest coverage for that date in the MODIS record dating back to 2001 and less than one-third of the median. Coverage had increased slightly by January 26.