Can some one explain too me how 2 days ago we go from cold/dry to maybe a snow storm over the next 7 days. A coastal low/slider just to the south then the next operational run we have a lake cutter and rain all the way to upstate ny and temps in the 50s and after the even 40s when before it was the mid 30s? what key information did the new model run see that had the storm jump thousands of miles back to the west into the lakes?