In the heart of what should be a relatively steady midwinter pattern, the atmosphere has lurched into a jarring flip between ...

Add Yahoo as a preferred source to see more of our stories on Google. A shift in the jet stream could lead to stronger, more widespread storms moving from the Rockies into the Plains and the East ...

After weeks of brutal cold and disruptive storms tied to the Polar Vortex, the atmosphere is finally pivoting. A new jet stream configuration is easing the deep freeze in the East while steering long ...