#2 Get off the snow slab if you can. (If you are in an avy)
#3 If you cannot get off the snow slab, then grab a tree. (If you are in an avy)
#4 Swim before you start to sink, before you stop, cup your hands around your mouth to make an air pocket. (If you are in an avy)
#5 Do not go for help- you can lose critical time if you leave to find help.
#6 Look for clues
#7 The victim is usually just uphill of their snowmobile.
(#2-7,
http://www.nilesema.com/avalanchetips.htm)
#8 Relax your breathing, particularly if you cannot dig yourself out.
#9 Try to watch the victim as they are carried down the slope, paying particular attention to the point you last saw them. After the avalanche appears to have finished and settled, wait a minute or two and observe the slope carefully to make sure there is no further avalanche danger. If some danger does still exist, post one member of your party in a safe location away from the avalanche path to alert you if another avalanche falls.
#10 Begin looking for clues on the surface (a hand or foot, piece of clothing, ski pole, etc.), beginning with the point where they were last seen. As you move down the slope, kick over any large chunks of snow that may reveal clues. Since equipment and items of clothing may be pulled away from a victim during an avalanche, they may not indicate their exact location, but can help determine the direction the avalanche carried them. Mark these spots as you come across them. Be sure that all rescuers leave their packs, extra clothing, etc., away from the search area so as not to clutter or confuse search efforts.
#11 If you lost sight of the victim early during the avalanche, or if there are no visible clues on the surface, mark where the victim was last seen. Look at the path of the snow and try to imagine where they might have ended up. For those wearing avalanche transceivers, switch them to "receive" and try to locate a signal.
#12 For those using probes, begin at the point the victim was last seen at. Or if you have a good idea of where they were buried, begin in that area. Stand in a straight line across the slope, standing shoulder to shoulder. Repeatedly insert the probes as you move down slope in a line. Pay particular attention to shallow depressions in the slope and the uphill sides of rocks and trees, since these are terrain traps where they may have been buried.
(#9-12
http://nsidc.org/snow/avalanche/)