Well, to be fair, forecasting weather in Anchorage is extremely difficult.  Note that in the roughly 40-ish miles as the crow flies from ANC to Whittier the average annual precipitation goes up by roughly 10X.  We are often in a scenario of how much "weather" makes it over the mountains to our side (the lee side) and because you have considerable climatological variation in such a short distance it is very difficult to nail any particular forecast.  They do the best they can with the tools they have.  To be sure, they are actually more correct than it seems and they definitely do a better job than someone without any training.  So give them a break...