M 5.8 in Volcano Islands, Japan Region on 16 Aug 2018 18:21 UTC

Global Telecommunication Service

GTS (Global Telecommunication Service) is the official Warning and Alerting channel by the World Meteorological Organization (WMO) adopted by several Warning Organizations. As soon as a new GTS message regarding Tropical Cyclones(WT) or Tsunami(WE) the messages are processed and possibly assigned to the specific event. When a new GTS message is present an new tab in the specific event report page is present.The presence of a GTS message is shown in the homepage with a dedicated icon.

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2018-08-16 19:31 message from JMA link

Key information extracted from original GTS message :
Evaluation

  • There is a very small possibility of a destructive local TSUNAMI estimation at the forecast points - no tsunamis with amplitude of 0.5 meter or over are expected at any of them
  • However at some coasts particularly those near the epicenter higher tsunamis MAY arrive than our estimation authorities should be aware of this possibility
  • This will be the final bulletin unless there are changes about the potential of TSUNAMI generation by re-evaluation of the earthquake or there are reports on TSUNAMI observations

Original Message :

WEPA40 RJTD 161842
TSUNAMI BULLETIN NUMBER 001
ISSUED BY NWPTAC(JMA)
ISSUED AT 1842Z 16 AUG 2018
PART 01 OF 01 PARTS

HYPOCENTRAL PARAMETERS
ORIGIN TIME:1821Z 16 AUG 2018
PRELIMINARY EPICENTER:LAT23.5NORTH LON143.4EAST
VOLCANO ISLANDS, JAPAN, REGION
GUAM TO JAPAN
MAG:6.6(MJMA)

EVALUATION
THERE IS A VERY SMALL POSSIBILITY OF A DESTRUCTIVE LOCAL TSUNAMI

ESTIMATION AT THE FORECAST POINTS - NO TSUNAMIS WITH
AMPLITUDE OF 0.5 METER OR OVER ARE EXPECTED AT ANY OF THEM.

HOWEVER AT SOME COASTS, PARTICULARLY THOSE NEAR THE EPICENTER, HIGHER
TSUNAMIS MAY ARRIVE THAN OUR ESTIMATION
AUTHORITIES SHOULD BE AWARE OF THIS POSSIBILITY.

THIS WILL BE THE FINAL BULLETIN UNLESS THERE ARE CHANGES ABOUT
THE POTENTIAL OF TSUNAMI GENERATION BY RE-EVALUATION OF THE
EARTHQUAKE OR THERE ARE REPORTS ON TSUNAMI OBSERVATIONS.

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2018-08-16 19:31 message from JMA link


Original Message :

WEPA40 RJTD 161838
TSUNAMI BULLETIN ISSUED BY JMA AT 1838Z 16 AUG

ORIGIN TIME 1821Z 16 AUG
PRELIMINARY EPICENTER LAT 23.5 N. LON 143.4 E.
OGASAWARA ISLANDS REGION
FOCAL DEPTH 0 KM MAG 6.6

NO SIGNIFICANT TSUNAMI IS EXPECTED IN COASTAL AREAS OF JAPAN
NO FURTHER ACTION WILL BE TAKEN
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