Avalanche education resources in northwest montana from fac | flathead avalanche center. Date and time of observation or avalanche occurrence. Avalanche Watch Issued For Northwestern Montana Montana Public Radio Strong westerly flow is causing strong downsloping/drying along the east slopes of the cascades and producing strong/extreme alpine winds in the cascades. Northwest montana avalanche center . Note that these are the measured depth of the snow and not the water equivalent you would measure from melting the snow. Kalispell — the flathead avalanche center issued an avalanche warning for the flathead, whitefish and swan mountain ranges monday as conditions reached dangerously high levels. His research focused on wet snow avalanche phenomena. Kalispell — we are beginning to learn more information about an avalanche in the swan mountain range on saturday that left one snowmobiler. Friends of idaho panhandle avalanche center's avalanche safety courses are ready for si...