With a core only 30 to 60 miles wide and 1 to 3 miles deep, an MCV is often overlooked in standard weather analyses. But an MCV can take on a life of its own, persisting for up to 12 hours after ...

A pattern of record-breaking warmth near Iceland is contributing to stormy weather and unusually cool temperatures in the United States this week. An unusual heat dome over the North Atlantic ...

A heat advisory that began Tuesday remained in effect through 8 p.m. as temperatures again rise into the upper 90s on Wednesday.