Deep penetration of cold temperatures and a coastal storm will bring bomb cyclone and polar vortex into your newsfeeds.

The greater Philadelphia region will experience no weekend letup in the prolonged cold snap gripping the area.

Michigan is set for several days of frigid temperatures and heavy lake-effect snow as Arctic air continues its slow march ...

Winter Storm Fern aftermath continues as the East Coast braces for a bomb cyclone and polar vortex, with heavy snow and ...

Thirty kilometers above the Arctic, something unusual is happening. The polar vortex-that massive cyclone of frigid air that normally keeps the cold locked over the North Pole-is weakening and warping ...

MANILA, Philippines — A new weather disturbance is forming east of the Philippines and could develop into a tropical cyclone while moving toward the Visayas and Southern Luzon regions this week, the ...