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If someone needs immediate help with tsunami warning, use emergency mode.
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DEVELOPMENT FIXTURE — Official tsunami warning or natural signs indicate a tsunami may arrive.
The essentials if you need to act right now.
Go inland uphill now. Do not wait at the coast.
What might I see? Observable signs — no diagnosis required.
DEVELOPMENT FIXTURE — Official tsunami warning siren or alert.
DEVELOPMENT FIXTURE — Strong earthquake felt near coast or ocean water pulling back unusually.
Optional deeper explanation — not required to act.
DEVELOPMENT FIXTURE — Tsunami waves can arrive in minutes and flood kilometers inland.
DEVELOPMENT FIXTURE — First wave may not be the largest.
Check the scene before you approach.
Civilian-safe actions you can take.
DEVELOPMENT FIXTURE — Leave beach, harbor, and coastal roads on foot if traffic jams.
DEVELOPMENT FIXTURE — Head uphill following evacuation signs.
DEVELOPMENT FIXTURE — Stay at high ground at least 30 meters above sea level if possible.
DEVELOPMENT FIXTURE — Keep listening for updated wave arrival times.
When and how to get professional help.
DEVELOPMENT FIXTURE — Evacuate to high ground immediately. Do not return until official all clear.
DEVELOPMENT FIXTURE — Call 112 when safe if unable to reach high ground.
DEVELOPMENT FIXTURE — Report people still on beach to authorities.
DEVELOPMENT FIXTURE — Stay evacuated until authorities announce all clear — hours may pass.
Dangerous actions, when not to attempt rescue, and common myths.
DEVELOPMENT FIXTURE — Do NOT go to shore to watch waves arrive.
DEVELOPMENT FIXTURE — Do NOT return when water briefly recedes — larger wave may follow.
DEVELOPMENT FIXTURE — One wave means the tsunami is over
DEVELOPMENT FIXTURE — Tsunamis arrive in multiple waves over hours. Stay on high ground until all clear.
DEVELOPMENT FIXTURE — Return to coast too early and caught by larger following wave.
Other scenarios in the same family.
Aftershock
DEVELOPMENT FIXTURE — The ground shakes again after the main earthquake.
Avalanche warning
DEVELOPMENT FIXTURE — Avalanche danger is high on slopes where you are traveling or living.
Buried in avalanche
DEVELOPMENT FIXTURE — You or someone nearby is buried in avalanche snow.
Compound disaster
DEVELOPMENT FIXTURE — Multiple disasters overlap — e.g. earthquake and tsunami, cyclone and flood.
DEVELOPMENT FIXTURE — Anyone swept by water needs rescue and emergency care.