M 7.8 Earthquake and Tsunami (1.6 m) in Solomon Islands on 08 Dec 2016 17:38 UTC

2016-12-08 22:02 message from NTWC

Key information extracted from original GTS message :
Evaluation

  • An earthquake with a preliminary magnitude of 7.8 occurred in the SOLOMON ISLANDS at 1739 UTC on thursday december 8 2016
  • Additional TSUNAMI observations have been made
  • Note that a maximum wave amplitude of 0.43 m was observed at tide station hienghene in NEW CALEDONIA and the amplitude is currently diminishing at that location
  • Recommended actions
  • For coastal areas impacted by TSUNAMI waves carefully monitor for any continuing sea level changes
  • When hazardous waves have not been observed for at least two hours then it can be assumed the hazard has passed
  • However continue to exercise caution around the sea as smaller TSUNAMI fluctuations MAY continue for many more hours
  • For other coastal areas if hazardous waves have not been observed for at least two hours after the estimated arrival time then it can be assumed the hazard has passed
  • However small sea level fluctuations MAY occur and normal caution around the sea should be exercised
  • TSUNAMI observations
  • The following are TSUNAMI wave observations from coastal and/or deep-ocean sea level gauges at the indicated locations
  • The maximum TSUNAMI height is measured with respect to the normal tide level