No global climate change or anything like that. - Democratic Underground

From the national weather service:

An unseasonably strong Bering Sea storm system will move over mainland Alaska today. This storm system resembles the powerful storms typically experienced during the winter months and it is unusual for storms of this strength to move through this early in the fall.

1.  If a winter-like storm hits Alaska in early September, how would that qualify as global warming evidence, rather than global cooling evidence, or evidence of nothing other than normal natural weather fluctuations?

2.  If storms need (CO2-induced) warmth to grow strong, why would strong storms typically hit Alaska during the winter, rather than during the summer?