Size 1.5 on Vantage NE Face

We had 3 size 1 avalanches on test slopes run, on NE/N/NW aspects, on slopes as low-angle as 28 degrees, involving slabby, wind-affected snow on surface hoar (and maybe sun crust). Soft areas of snow (less consolidated) seemed less reactive. Nevertheless, a ski cut across the steep opening of the NE face on the soft wind-deposited snow resulted in a 40m wide, 20-25cm thick avalanche that ran to the bottom of the slope (150m ish). The avalanche started below the ski cut and no one was involved. Note: The debris field was on a quite gradually changing slope; we assessed it as a size 1.5 for that reason; a large amount of snow was involved but it was deposited evenly and relatively thinly - we thought not deeply enough to bury an individual.