Tsunami
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Near the coast, strong or long shaking, a sudden unusual sea rise or retreat, or a loud ocean roar can signal a tsunami. After shaking stops, move to high ground and inland immediately. Do not wait for an official warning when natural warning signs are present.
Take it with you. Verify locally.
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In immediate danger, contact local emergency services. Current instructions for your location take priority.
Do now.
- 01
Protect during shaking
Drop, Cover and Hold On first if the earthquake is still occurring.
- 02
Follow evacuation signs
Move uphill and inland along the designated route, on foot if roads are blocked.
- 03
Stay off the shore
Never go to watch waves or exposed seabed.
- 04
Wait for clearance
Stay out of the evacuation zone until authorities say it is safe.
Next steps.
Know coastal evacuation routes before visiting. Use designated vertical evacuation structures where local plans provide them.
Watch for.
The first wave may not be largest. Dangerous currents can last for hours.
Sources & context.
Original Osprey Zero summary of the references below. U.S.-based guidance unless noted; check authorities where you are. This page is not a live alert.
Updated 2026-10-02. Recheck official instructions during an active event.