Mike Boylan, storm chaser and founder of Mike's Weather Page, joins LiveNOW's Andy Mac to discuss Tropical Storm Humberto and a tropical wave that could become Tropical Storm Imelda as they move through the Atlantic Ocean. If the two storms get too close to each other, it could trigger the 'Fujiwhara effect.'
Hurricane season: Forecasters watch for rare 'Fujiwhara effect' as 2 storms intensify in Atlantic

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