Dave,

Since they're running their own regional numerical model only initialized by the GFS, the model parameterized physics and boundary layer will be different. Local higher resolution initialization features from the GFS may not be the same as the NAM. Nonetheless... let's not discount how TopMeteo will perform in the U.S. Let's wait and see.

Walt WX



On Thursday, February 25, 2016 at 4:05:19 PM UTC-8, Dave Springford wrote:
Hi Walt,


I have found GFS to be not nearly as accurate as the NAM model in north america, to the point that I never use the GFS with Dr Jack or XC skies. What is your experience with GFS? If topmeteo uses only GFS and the input data is not good as NAM then the resulting output won't be good either. What's your expert opinion on this?