Looking to update our weather class and curious as to what everyone is using and why.

I have been using Aviationweather.gov, HEMS Tool and Foreflight.

Lets hear what you suggest.............

All those tools are good  ,  I sometimes put out blind calls if in flight for Pilot Reports and have even had crew call  someone they know in the area I am concerned about. Not a perfect solution but sometimes it helps. 

This presentation may be a bit old, but some of the slides may help your class:  http://www.mikewalsted.com/Weather.pptx