>>2742902NTA, but snow surface and subsurface conditions can change not only by season but by time of day and based on local weather changes, especially in the early season and late season (spring or summer snow). The most obvious type to look out for is slushy on top and frozen on bottom snow when it heats up in the afternoon (it can also be vice versa). I'm in the SW US so not really that extreme but typically the most dangerous snow is usually late season deep snow (deep fresh powder or wet snow on top of older colder snow) on subapline slopes, most snow fatalities in my state are from falls or hypothermia or vehicle crashes but a bit farther north of me in Utah at least a couple times a year people are killed or rescued from avalanches or slides in such conditions. That said, I almost entirely stick to subalpine snowshoeing or hiking (or driving vehicles in) in less than 1.5-2m (most often less than 1m) of snow depth so I'm not really an expert on it.
