Was perusing the ridiculous storm totals at Sierra and noticed that the base levels are significantly under the reported total that dropped. Why does the 7 day snowfall count at the summit = 85" but the base depth is still only 67"? Doesn't seem like it would have evaporated that quickly.
base = where the bottom is above the dirt,
snowfall = potential for fresh, but you got to pay attention to other things like... rh, temps, moisture content of the recent past...few hours or day or two.
Summit and base totals will differ because typically more snow falls at higher elevations then lower ones. At my mountain we might get only 4 inches fresh at the bottom but at the top there will be 12 inches. Typically most mountains will also report a mid-mountain depth so you get a good idea of the overall mountain snow depth. That measurement is taken from an unpacked, unskied area.
This. Breck is notorious for it. The Breck locals will defend them but fuck that. I've been on that mountain enough times when they were reporting 6-8" when there was a little pow off the 6 chair but the rest of the mountain was essentially dust on crust. According to Breck's measurements I should be tripping over my dick.
Loveland on the other hand is notorious for under reporting.