I have noticed that forecast builder and POWT are producing snow amounts where we do not have qpf. I suspect it has something to do with the hourly pop weighting calculation, and it does happen where we have measurable snow accumulation without measurable qpf, so maybe that is what is expected?
Anyway just to let you know how we are doing things here in GGW, we do hourly pops but 6 hour qpf/snow amount.
Ruth Ann Ebert
WFO glasgow MT