Atmospheric River Brings Weather Whiplash To East Coast As Bomb Cyclone Develops

5 hours ago The East Coast is experiencing a whiplash-inducing stretch of winter weather. That's due in part to an atmospheric river and developing bomb cyclone. The storm is bringing heavy rain and fierce winds to many areas until Wednesday night, and flooding is possible in some places. Utilities geared up for potential power outages from damage caused by winds that may exceed 60 mph in areas. Forecasters say one of the key factors driving the weather is an atmospheric river, which is a long band of water vapor that can transport moisture from the tropics to more northern areas.