From another board explaining why models may be trending slightly east.
If you look west there are two things that may lend credence to the eastern soln. First is the pna ridge. It’s axis of over Nevada would allow for that eastern more soln. Going to have to watch that. Second is the energy crashing the W coast near Canada CONUs. This progressive Atlantic and Pac pattern tells me it will likely continue to push the entire mean trough complex along. This problem, energy crashing the west coast, has been a theme all winter so no reason to believe it won’t be a factor this time. In this situation it may lend a helping rather than hurting hand it pushing the entire this further east as we get in right if the timing is right.