SPRINGTIME AVALANCHE TIPS – Timing is everything
Watch for the “shed cycle”. This typically lasts a couple weeks, begins on southerly slopes then moves to both east and west until finishing up on north. Keep an eye on the ridgetop weather stations for multiple days of above freezing overnight temperatures. This can signal a snowpack with limited refreezing and when followed by warm days (either sunny or rainy) can dramatically increase the likelihood of natural and human triggered large avalanches. Careful route planning to say out from under slopes with wet and rotten snow is essential during this period.
SEASON WEATHER ROUNDUP
Check out our Weather History page where you can find our monthly weather charts. Here is the weather chart for April.
SNOWFALL and SNOW DEPTH – (Turnagain Pass SNOTEL 1,880ft on Center Ridge)
Seasonal snowfall was 322“ (red line, Nov 1 – Apr 30) – a feast or famine regime. Last season snowfall was 385″ for comparison (blue line). Snow depth is shown in the graph below:
Don’t forget about the BeadedStream snow temperature array. It’s located near the SNOTEL site and will hopefully be up and running until June!
AIR TEMPERATURE – (Sunburst weather station 3,812ft)
Sunburst weather station:
WIND – (Sunburst weather station 3,812ft)
Sunburst had a much milder year for winds (compared to last season when we had record setting gusts). The mid-season stormy period is clearly evident in the increase in easterly wind from Dec 24th till the beginning of March.
Current weather can be found on the CNFAIC weather page.
Thank you for checking the avalanche advisories this season. Have a great spring and summer!!
|04/18/21||Turnagain||Avalanche: Turnagain Pass Road Obs||Andy Moderow|
|04/17/21||Turnagain||Avalanche: Road obs||Johnston-Bloom / Moderow Forecaster|
|04/16/21||Turnagain||Avalanche: Seattle Ridge||Wendy Wagner Forecaster|
|04/16/21||Turnagain||Avalanche: Turnagain Pass, non-motorized side seen from Seattle Ridge||CNFAIC Staff Forecaster|
|04/16/21||Turnagain||Observation: Sunburst||Lance breeding|
|04/15/21||Turnagain||Observation: Tincan||Schauer/ Rothman Forecaster|
|04/13/21||Turnagain||Observation: Turnagain Pass Road Obs||A Schauer Forecaster|
|04/12/21||Turnagain||Observation: Tincan||Johnston-Bloom / Latosuo Forecaster|
|04/10/21||Turnagain||Observation: north sides||lance breeding|
|04/09/21||Turnagain||Observation: Girdwood to Turnagain Road Observations||W Wagner Forecaster|
Status of riding areas across the Chugach NF is managed by the Glacier and Seward Ranger Districts, not avalanche center staff. Riding area information is posted as a public service to our users and updated based on snow depth and snow density to prevent resource damage at trailhead locations. Riding area questions contact: firstname.lastname@example.org
|Area||Status||Weather & Riding Conditions|
This is a general backcountry avalanche advisory issued for Turnagain Arm with Turnagain Pass as the core advisory area. This advisory does not apply to highways, railroads or operating ski areas.