Oh, the dreaded inverted trough those rarely work out, but when they do they are interesting. The last one to visit around here I think was like 2008 or so. We picked up 7" of snow while 30 miles away the skies were clear to the north with the moon out and a few passing clouds go 13 miles southeast they picked up 13" go 13 miles southwest they picked up 2". They are interesting and fun to track. Right now, we are looking for anything that will work at this point and an inverted trough is an interesting one.