Hurricane Erin, which briefly intensified into a Category 5 storm Saturday morning, weakened to a Category 3 by the evening as it underwent an eyewall replacement cycle in the Atlantic, forecasters said.

Hurricane Erin’s intensification was extraordinary, with an 85 mph jump in just 24 hours. That makes it one of the fastest Category 1 to Category 5 transitions ever recorded in the Atlantic. It even slightly surpassed Hurricane Lee’s 2023 leap of about 80 mph in 24 hours, placing Erin in rare company.