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If someone needs immediate help with coastal earthquake, use emergency mode.
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DEVELOPMENT FIXTURE — Strong shaking near the coast where a tsunami may follow.
The essentials if you need to act right now.
After shaking, go inland uphill immediately.
What might I see? Observable signs — no diagnosis required.
DEVELOPMENT FIXTURE — Violent or long-lasting shaking near the ocean.
DEVELOPMENT FIXTURE — Water suddenly receding from shore is a critical warning sign.
Optional deeper explanation — not required to act.
DEVELOPMENT FIXTURE — Coastal earthquakes can trigger tsunamis within minutes.
DEVELOPMENT FIXTURE — Beaches and low coastal areas are most dangerous after shaking.
Check the scene before you approach.
Civilian-safe actions you can take.
DEVELOPMENT FIXTURE — During shaking: drop, cover, and hold on.
DEVELOPMENT FIXTURE — When shaking stops: leave the coast — do not gather belongings.
DEVELOPMENT FIXTURE — Move inland and uphill on foot if roads jam.
DEVELOPMENT FIXTURE — Warn others to leave beach and low-lying coastal areas.
When and how to get professional help.
DEVELOPMENT FIXTURE — Earthquake safety first, then immediate evacuation to high ground.
DEVELOPMENT FIXTURE — Call 112 when safe to report you evacuated from the coast.
DEVELOPMENT FIXTURE — Follow official tsunami alerts on radio or phone.
DEVELOPMENT FIXTURE — Stay on high ground until authorities announce all clear.
Dangerous actions, when not to attempt rescue, and common myths.
DEVELOPMENT FIXTURE — Do NOT go to the beach to watch the ocean after shaking.
DEVELOPMENT FIXTURE — Do NOT wait for a siren if shaking was strong — evacuate now.
DEVELOPMENT FIXTURE — Wait for official tsunami warning before leaving the coast
DEVELOPMENT FIXTURE — If strong shaking near the coast, evacuate uphill immediately without waiting.
DEVELOPMENT FIXTURE — Tsunami waves can arrive before warnings reach everyone.
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 — Multiple waves can arrive — the first may not be the largest.