...it was not until its center was over the eastern slope of the Alleghenies that its effects became destructive. There the storm was held up by winds from the southeast, the Lake region, and a storm from the northeast, the cold wind from the Lakes apparently wringing all the moisture out of the clouds.
Again this morning there had been a bright frost in the hollow below the dam, and the sun was not up long before storm clouds rolled in from the southeast. (McCullough p.19)
