M 6.8 in Greece on 25 Oct 2018 22:54 UTC

2018-10-25 23:32 message from NOA

Key information extracted from original GTS message :
Evaluation Watch

  • It is not known that a TSUNAMI was generated
  • This message is based only on the earthquake evaluation
  • an earthquake of this size has the potential to generate a TSUNAMI that can strike coastlines with a wave height greater than 0.5m and/or cause a TSUNAMI run-up greater than 1m
  • Authorities should take appropriate action in response to this possibility
  • This center will monitor sea level data from gauges near the earthquake to determine if a TSUNAMI was generated and estimate the severity of the threat
  • A TSUNAMI is a series of waves and the first wave MAY not be the largest
  • TSUNAMI wave heights cannot be predicted and can vary significantly along a coast due to local effects
  • The time from one TSUNAMI wave to the next can be five minutes to an hour and the threat can continue for many hours as multiple waves arrive