TAMPA, Fla. (WFLA) -- Weather nerds around the world are watching topics like a hawk this weekend, Tropical Storm Humberto and the disturbance expected to develop into Imelda may be close enough together to experience the Fujiwhara effect.

It's pretty rare to see, since it is difficult for storms to form close enough together to interact, but when they do, it looks like a little dance around each other.

As explained by the NWS/NOAA, the Fujiwhara effect occurs when two hurricanes spinning in the same direction (counterclockwise for the Northern Hemisphere) get close enough together, they begin to dance around each a center foint between them, a fulcrum point at which they rotate around.

The evolution of the storms as they experience the Fujiwhara effect depends on their strength. If the

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