1:20

Different types of thunderstorms explained and why some strike without warning

Front-driven storms form along a dividing line between humid warm air out ahead of a line of storms and cooler, drier air behind it. That contrast is exactly why thunderstorms develop.

1:37

Roadwork scheduled to shut down stretch of Route 9W in Rockland County

The closure will run from the intersection of Route 9W and Hickey Street in Piermont to Shadyside Avenue in Upper Grandview.