Storm Surge Safety Guide
Understanding surge zones, evacuation timing, and why storm surge is the deadliest part of a tropical cyclone.
Compiled from official emergency-management guidance (FEMA/Ready.gov, IFRC, WHO, national agencies) · Reviewed by the WND Editorial Team · Last reviewed:
Key action: Storm surge is the deadliest part of a tropical cyclone. If you are in an evacuation zone, leave when ordered — water can rise several metres in under an hour and cut escape routes long before landfall.
Before the event
- Find out TODAY if your home is in a storm-surge evacuation zone and what zone letter/number it is.
- Know your evacuation route inland/upland and where you will stay.
- Understand that surge arrives BEFORE the storm centre — roads flood 6–12 hours before landfall.
- Elevate utilities where feasible; document belongings for insurance.
- Plan for pets and family members needing assistance in an evacuation.
During the event
- Evacuate the zone when ordered — comply early, drive tens of kilometres inland, not hundreds.
- Once surge begins, do NOT attempt to drive out — vehicles float in 30–60 cm of water.
- Trapped by rising water: go to the highest floor, not a closed attic; signal for rescue.
- Never walk into surge water: currents, debris and downed lines make it lethal.
- Remember returning surge: water flows back sea-ward violently as the storm passes.
After the event
- Wait for the all-clear; surge zones can re-flood on the storm's back side and next high tide.
- Assume structural damage in surge-hit buildings: foundations undermined, saltwater in systems.
- Saltwater ruins electrics and corrodes — have installations inspected before power-up.
- Follow the flood guide for contamination and cleanup safety.
Emergency kit checklist
- Go-bag ready for evacuation (see hurricane guide)
- Life jackets for coastal households in high-risk zones
- Waterproofed documents including insurance details
Evacuation guidance
- Surge evacuation is the one you must never skip — sheltering "vertically" in low-rise buildings inside a major surge zone is often unsurvivable.
- Leave before winds reach tropical-storm strength; bridges close early.
What NOT to do
- Do NOT stay to protect property in a surge evacuation zone.
- Do NOT judge safety by past storms — surge depends on storm size, angle, speed and tides, not just category.
- Do NOT walk on beaches or seawalls to watch the surge arrive.
- Do NOT return until officials reopen the zone.
Children, older people and people with disabilities
- Care facilities and households with limited-mobility members in surge zones must evacuate a full day ahead of general orders.
Pet safety
- Evacuate pets with you; surge zones may be closed for days or weeks.
Frequently asked questions
How high can storm surge get?
Major hurricanes have produced surges of 6–9 metres above normal tide — Hurricane Katrina's surge reached about 8.5 m on the Mississippi coast. Even 1–2 m of surge destroys unelevated coastal homes.
Why does surge flood before the storm arrives?
Cyclone winds push water shoreward across hundreds of kilometres of ocean ahead of the eye. Combined with the tide, coastal roads can become impassable half a day before landfall — which is why evacuation deadlines are early.