Gert becomes a hurricane, watching Invest 91L and another tropical wave behind it
Tropical Storm Gert strengthened into the second hurricane of the 2017 Atlantic hurricane season late Monday over the subtropical western Atlantic. Despite a rather unimpressive convective structure, microwave imagery indicates that Gert has nearly developed a closed eyewall. Gert is likely to strengthen some more over the next two days, possibly becoming a category 2 hurricane as it accelerates to the northeast. The average second hurricane in the Atlantic does not form until August 28, continuing the fast start to…