Storm sequence chronology and initial profile morphology controls on beach erosion

•Beaches erosion induced by a storm group and its sequences were analyzed at a wave-dominated zeta coastline.•A 7% higher wave height exposure can potentially double the cumulative erosion.•Relationship between beach erosion and water level varied when the beach eroded about 20% of its pre-storm volume.•Erosion continues unless the current storm wave power is 76% lower than previous storm.