Size wise, this is shaping up to be one of if not the largest mod released for New Vegas, and perhaps on any Bethesda game. So everything under, essentially froze over. Right now, the reason for a lot of snow in Portland is, when the nukes hit this location, a cloud of dust and ash went up and blocked the sun. While this is true, keep in mind that it would have been even harder to fit the NCR and the Legion that far up north with a reasonable explanation.
I know some of you from Oregon may say, there is no way in hell that Portland gets this much snow and some location in Canada may fit better with the Frontier. Portland, Oregon was chosen for many reasons. The base idea of the Frontier was to construct a completely new environment from the Mojave Desert and Capital Wasteland. However, due to a plethora of potential bugs, we strongly suggest you create a new save for playing the Frontier, to minimize potential errors.
You visit the Frontier as the courier, the Frontier takes place in the same time span as the vanilla DLC’s. Fallout the frontier can now be downloaded on Nexus Mods Can I use my existing FNV character to play the mod? Do you go to the Frontier as the courier?