Tropical Storm Humberto , the eighth named storm to emerge this hurricane season, is currently swirling over waters just north of the Caribbean. Although forecasts as of Thursday predict that Humberto won't ever touch land, there is a possibility it could interact with another system developing nearby in the western Atlantic.

That's an unlikely outcome, said CBS News meteorologist Nikki Nolan. But if such a collision does occur, it could produce what's called the Fujiwhara effect , a rare phenomenon in which two different storms merge and become entangled around a newly formed, common center.

How the process plays out depends on the characteristics of the storms involved, according to the National Weather Service . The forecasting agency describes the Fujiwhara effect on its web

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