Eyewall Replacement Explained

Tuesday August 19, 2025

Eyewall replacement is significant because it temporarily weakens a hurricane’s peak intensity but can also cause the storm to dramatically expand in size, leading to a larger area of damaging winds. 

Last Friday, Erin became the first hurricane of the Atlantic hurricane season. Very favourable conditions enabled Erin to undergo explosive intensification on August 16, reaching its peak at Category 5 intensity with one-minute maximum sustained winds of…