tsunami alerts
Coastal evacuation notices
Tsunami alerts are official warnings issued when seismic activity or other disturbances may generate dangerous ocean waves.
These alerts range from watches (potential threat) to warnings (imminent danger), instructing coastal populations to move to higher ground.
Check your phone for tsunami alerts after any major earthquake.
The system operates through networks of ocean sensors and seismic monitors.
- warningAlert about danger
- early warningAlert before event occurs
- sirenWailing alert device
- evacuationRemoval from danger
- coastalOf the shoreline
earthquake · Ring of Fire · wave · tidal surge · ocean · emergency · broadcast · Pacific · shoreline · flee · shelter · seismic · buoy · detection · radio · urgency · flood · escape
- coastal infotide charts, tide tables, wave height, water temperature, rip currents
- tsunamistidal waves, tidal wave, megatsunami, runup, run-up
- ocean datasalinity, currents, wave height, sea temperature, water temperature