Skip to main content
Flathead Avalanche Center
Responsive Links
Advisories
Observations
Donate
Forecasts
Avalanche Forecasts
Whitefish Range
Swan Range
Flathead Range and Glacier N. P.
Archives
Sign up for emailed forecasts
Tutorials
How to read the Forecast
Avalanche Problems
The Danger Scale
Observations
Observations
Field Observations
Observations prior to Oct.1 2022
Incidents
Snowpack Tracker
Submit Observation
Weather
Western MT Backcountry Weather Forecast
Weather Station Table
Weather Station Map
Education
Classes and Events
Course List
Event Calendar
Class Details and Registration
Northern Rockies Snow & Avy Workshop
Mentorship
Videos
Throttle Decisions Video Series
Local Awareness Videos
Online Resources
Avalanche Encyclopedia
Avalanche Canada tutorial
Know Before You Go Online Course
Backcountry Ascender - Motorized Specific
BCA Tutorial
FOFAC Recorded Classes
About
Friends of the Flathead Avalanche Center
FOFAC
How To Help
Sponsors
Donate
Flathead Avalanche Center
Blog
Staff
Contact
Annual Reports
Donate
Swan Range Avalanches
Location Name:
Swan Range
Observation date:
Monday, March 29, 2021 - 17:30
Is this an Avalanche Observation:
Yes
Observation made by:
Forecaster
Tabs
Quick Observation
Natural and possibly snowmobile triggered avalanches in the Swan Range.
Snowpack, Avalanche, Weather Images:
Travel Details
Region:
Swan Range - East Side (Hungry Horse Reservoir access)
Route Description:
Activity:
Snowmobiling
Snowpack Details
Snowpack and Weather Details:
Red Flags:
Avalanches from the past 2 days
Avalanche Details
Avalanche Details:
Date and Time of Avalanche:
Sunday, March 28, 2021 - 12:00
Number of avalanches:
6
Avalanche Type:
Soft Slab
Failure Plane/Weak Layer:
Old snow
More information or comments about the avalanche:
Trigger
Trigger:
natural
Size
Destructive Size:
D1.5
Relative Size:
R2 Small
Date and Time of Avalanche:
Sunday, March 28, 2021 - 12:00
Number of avalanches:
1
Avalanche Type:
Soft Slab
Failure Plane/Weak Layer:
Old snow
More information or comments about the avalanche:
Trigger
Trigger:
snowmobiler