Avalanche: west porter

Found myself ascending the ridge between West and Main Porter. Weather started as blizzard, transitioned to sunny and warm and back to blizzard in the two ish something hours I was out. as the blizzard let up, I found a drop in spot, a 50' wide gully. I felt safer dropping rather than the steeper more open slopes I'd just passed thinking they'd likely be more connected. I dropped and did a slope cut to the other side of the terrain feature and saw it break out a couple feet above me. Safely on the other side I watched it entrain a decent amount of snow and traveled probably 250' down until try slope angle mellowed. It did not hit the flats of the uphill track.