Here’s a clear, practical guide on what to do before a tsunami so you’re not scrambling at the last minute.

What to Do Before a Tsunami

1. Know your risk and escape routes

  • Find out if your home, school, or workplace is in a tsunami hazard zone (low‑lying coastal areas, river mouths, bays).
  • Learn the height of your area above sea level and how far it is from the coast; aim to know where “higher ground” actually is (at least about 30 m / 100 ft above sea level and 3 km / 2 miles inland where possible).
  • Identify official evacuation routes and safe assembly points; ask local disaster management or city authorities if maps and signs exist.
  • If you often visit beaches or coastal resorts, ask hotels/campgrounds about their tsunami evacuation plan and warning system as soon as you arrive.

2. Make a family emergency & reunification plan

  • Create a simple written plan : who does what, where to meet, and how to contact each other if phones or the internet are down.
  • Decide:
    • Primary and backup meeting points on higher ground.
* Who picks up children from school and from where if the school is in an inundation zone.

* A family **out‑of‑area contact** everyone can text or call to say they are safe.
  • Practice your evacuation route on foot, in daylight and in bad weather, so it becomes automatic in a crisis.
  • Make sure children, elderly family members, and people with disabilities all understand the plan and have any needed assistance devices ready.

3. Learn the natural warning signs

Official alerts can be late or fail, so knowing the natural signs is critical.

Recognize that a tsunami may follow if you notice:

  • A strong or long earthquake , especially one that makes it hard to stand or lasts more than ~20 seconds.
  • A sudden, unusual withdrawal of the sea (water rushing far out, exposing the sea floor, corals, or fish).
  • A loud roar from the ocean, like a train or airplane, that is not normal.

If you are near the coast and notice any of these, do not wait for an official warning —move to high ground immediately.

4. Prepare an evacuation “Go Bag”

Have a ready‑to‑grab backpack or small suitcase with wheels for each person or for the family.

Include essentials like:

  • Water (bottled) and non‑perishable food (canned, energy bars).
  • First‑aid kit , basic medicines, personal prescriptions, glasses, spare contacts.
  • Flashlight and battery‑powered or hand‑crank radio , with extra batteries.
  • Copies of important documents (ID, insurance, medical info) in waterproof bags, stored high up at home, not in the basement.
  • Lightweight blanket or thermal blanket, basic hygiene items, mask, hand sanitizer.
  • Phone charger and power bank, a whistle, small cash, keys.

Keep the bag near the exit so you can grab it quickly when told to evacuate.

5. Prepare your home and property

  • Check your house and land for flood vulnerabilities (basement storage, low‑lying electrical systems) and repair what you can.
  • Learn how to turn off gas and electricity ; emergencies may require you to shut them off to reduce fire and shock risk.
  • Store valuable and irreplaceable items and key documents in higher levels of the house in waterproof containers.
  • Consider appropriate insurance for tsunami‑related flood damage if available in your area.

6. Set up warning and communication systems

  • Make sure you can receive emergency alerts : weather radio, local text alerts, official apps, and check that your mobile device can receive wireless emergency alerts.
  • Learn the tsunami warning levels and siren meanings in your area so you know when to move and when it’s an all‑clear.
  • Keep contact lists (family, neighbors, local emergency services) printed and in your go bag, not just on your phone.

7. Practice, stay ready, and look out for others

  • Take first aid and CPR training if possible (Red Cross, St. John Ambulance, etc.).
  • Regularly review and practice your routes and procedures; muscle memory saves time when you’re scared.
  • Talk about tsunamis with neighbors and friends so more people know what to do, especially those who are new to coastal areas or tourists.

8. Quick “Before Tsunami” checklist (HTML table)

[7][5][1] [2][9][6] [5][9][1] [5][6][1][3] [1][3] [7][6] [3][1]
Priority Action Before a Tsunami Why It Matters
High Know if you live or work in a tsunami zone and identify safe high ground. You can evacuate fast to an appropriate height and distance from the coast.
High Create and practice a family emergency and reunification plan. Reduces confusion, especially if family members are separated when a warning occurs.
High Learn natural tsunami warning signs (strong quake, sea withdrawal, unusual roar). Lets you act immediately if official alerts are delayed or unavailable.
Medium Prepare a go bag with water, food, first aid, radio, and documents. Supports you during evacuation and in shelters when services are disrupted.
Medium Learn how to shut off gas and electricity and protect important items from flooding. Helps prevent fires and reduces damage to critical belongings.
Medium Set up multiple ways to receive warnings (sirens, radio, alerts, apps). Increases chances you get timely instructions from authorities.
Lower (but useful) Consider insurance and learn basic first aid/CPR. Improves financial recovery and ability to help yourself and others.

9. Short scenario to remember

Imagine you’re staying at a seaside hotel. You checked in and immediately looked at the evacuation map on the back of the door , noted the uphill street behind the building, and showed your family where to meet if separated—under a specific sign on a hill. That night, a strong earthquake shakes the area; power goes out, alarms start blaring, and people are confused. Because you already know the plan and natural warning signs, you grab your go bag, take the stairwell, and head straight uphill to your pre‑chosen spot , instead of losing precious minutes deciding what to do. That’s the goal of preparing before a tsunami: to make the safest action almost automatic when every second counts.

Bottom note: Information gathered from public forums or data available on the internet and portrayed here.