NASA Earth Observatory image by Jesse Allen and Robert Simmon, using VIIRS data. Caption by Adam Voiland with information from Robert Walsh, Xiangdong Zhang, and Steve Vavrus. An unusually large, long ...

Just as the holiday dust settles, winter is winding up for a brutal encore. A powerful "bomb cyclone" churning through the Great Lakes is set to drag a punishing wave of Arctic air across the central ...