OK, maybe this isn't an error, but it wasn't what I was expecting. For my ForecastBuilder_Config, I have UserSnowLevel = True, since we're a mountain site and will probably use that method most often. But sometimes, we would like to use the Top-Down method. When I select that from the GUI at Step 4, everything executes normally. But I noticed my snow amounts in some of my valleys were rather low, despite having snowRatio's of 14:1 and temperatures around 30F. I played around with it quite a bit and have concluded that the SnowLevel is being used in the SnowAmt calculation, despite my selection on the GUI.
On line 400 of the PoWT utility, I found where it checks for self.UseSnowLevel, which should be set from the Config file. But in my way of thinking, this should be checking the "How to Derive Precipitation Types?" setting from the varDict (which is what the user selected in the GUI on Step 4).
Ron
WFO Spokane