Tropical Weather
Storm Surge vs Tide: What Raises Ocean Water During Coastal Storms?
The difference between storm surge, tide, storm tide, waves, and coastal flooding during hurricanes and strong coastal storms.
Quick answer: Storm surge is water pushed toward shore by a storm, while tide is the regular rise and fall caused by gravitational cycles.
Surge and tide
Storm surge adds water above the normal predicted tide level.
Storm tide is the combined water level from surge plus the astronomical tide.
Wave effects
Large waves can ride on top of elevated water, causing erosion and damage beyond the still-water level.
Breaking waves make coastal roads, beaches, and structures more dangerous.
Safety meaning
Evacuation decisions should follow local officials and surge maps, not just hurricane category.
Water is often the deadliest part of tropical cyclones.