Predicting Aurora i think most Aurora Hunters know how to do and what it involves... there are plenty of tools on the web to predict.
What we need is an aurora oval overlay on a map, no matter the clouds. So we know more exactly where to go. This is an essential tool for Aurora spotting in northern Europe since the Aurora oval is not consistent and changes quite drastically dependent on the weather conditions in space, earth's magnetic field and the intensity overall. In northern Europe it is quite closely monitored in the northern countries.
Seeing the Aurora oval is most likely the most significant and essential tool in forecasting the Northern Lights. NOAA has provided data for years but has proven the last couple of years to be more and more un reliable and faulty by as much as two days + -.