M 5.7 in Greece on 20 May 2020 23:43 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.

Click on the messages list to visualize on the right the detailed text.



2020-05-21 01:51 message from NOA link

Key information extracted from original GTS message :
Evaluation Advisory

  • Sea level readings indicate that no TSUNAMI was generated
  • The TSUNAMI alert is cancelled
  • However earthquakes of this size can generate small tsunamis that cause locally changes in currents and resonance in harbours
  • Authorities should be aware of this possibility and take appropriate action
  • This will be the final message issued for this event unless additional information becomes available

Original Message :

WEME40 LGAT 210150
TSUNAMI MESSAGE NUMBER 002
NEAM NOA HL-NTWC TSUNAMI SERVICE PROVIDER
ISSUED AT 0150Z 21 MAY 2020

THIS MESSAGE IS ISSUED AS ADVICE TO GOVERNMENT AGENCIES. ONLY NATIONAL AND LOCAL
GOVERNMENT AGENCIES HAVE THE AUTHORITY TO MAKE DECISIONS REGARDING THE
OFFICIAL STATE OF ALERT IN THEIR AREA AND ANY ACTIONS TO BE TAKEN IN RESPONSE.

AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS
ORIGIN TIME - 2343 UTC WED MAY 20 2020
COORDINATES - 35.02 NORTH 20.23 EAST
DEPTH - 99.8 KM
LOCATION - 249 KM SSW FROM PILOS
MAGNITUDE - 5.9 ML

EVALUATION OF TSUNAMI ADVISORY
SEA LEVEL READINGS INDICATE THAT NO TSUNAMI WAS GENERATED.
THE TSUNAMI ALERT IS CANCELLED.
HOWEVER, EARTHQUAKES OF THIS SIZE CAN GENERATE SMALL TSUNAMIS THAT CAUSE LOCALLY
CHANGES IN CURRENTS AND RESONANCE IN HARBOURS. AUTHORITIES SHOULD BE AWARE OF
THIS POSSIBILITY AND TAKE APPROPRIATE ACTION.

THIS WILL BE THE FINAL MESSAGE ISSUED FOR THIS EVENT UNLESS ADDITIONAL INFORMATION
BECOMES AVAILABLE.

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2020-05-20 23:54 message from KOERI link

Key information extracted from original GTS message :
Evaluation Information

  • Based on historical earthquake and TSUNAMI modelling no TSUNAMI generation is expected that can cause damage or major effect in the region
  • However the possibility of a TSUNAMI generation such as due to submarine landslides can not be excluded
  • Koeri will continue to monitor sea level readings and MAY issue further messages if required
  • This will be the final message issued for this event unless additional information becomes available

Original Message :

WEME40 LTAA 202351
TSUNAMI MESSAGE NUMBER 001
NEAM TSUNAMI SERVICE PROVIDER KOERI (TURKEY)
ISSUED AT 2351Z 20 MAY 2020

THIS ALERT IS ADDRESSED TO ALL COUNTRIES AND INSTITUTIONS SUBSCRIBED TO THE SERVICES OF KOERI NEAM TSP IN ITS MONITORING AREA.

... TSUNAMI INFORMATION ...
THIS ALERT APPLIES TO ALBANIA ... CROATIA ... CYPRUS ... EGYPT ... GREECE ... ISRAEL ... ITALY ... LEBANON ... LIBYA ... MALTA ... MONTENEGRO ... PALESTINE ... SYRIA ... TRNC ... TUNISIA ... TURKEY

THIS MESSAGE IS ISSUED AS ADVICE TO GOVERNMENT AGENCIES. ONLY NATIONAL AND LOCAL GOVERNMENT AGENCIES HAVE THE AUTHORITY TO MAKE DECISIONS REGARDING THE OFFICIAL STATE OF ALERT IN THEIR AREA AND ANY ACTIONS TO BE TAKEN IN RESPONSE.

AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS
ORIGIN TIME - 2343Z 20 MAY 2020
COORDINATES - 35.07 NORTH 20.25 EAST
DEPTH - 10.00 KM
LOCATION - CENTRAL MEDITERRANEAN SEA
MAGNITUDE - 5.7
VALUE IS SUBJECT TO FURTHER REVISION UPON AVAILABILITY OF ADDITIONAL SEISMIC DATA - MAY DIFFER FROM FINAL MAGNITUDE ESTIMATION.

EVALUATION OF TSUNAMI INFORMATION
BASED ON HISTORICAL EARTHQUAKE AND TSUNAMI MODELLING NO TSUNAMI GENERATION IS EXPECTED THAT CAN CAUSE DAMAGE OR MAJOR EFFECT IN THE REGION. HOWEVER, THE POSSIBILITY OF A TSUNAMI GENERATION, SUCH AS DUE TO SUBMARINE LANDSLIDES, CAN NOT BE EXCLUDED. KOERI WILL CONTINUE TO MONITOR SEA LEVEL READINGS AND MAY ISSUE FURTHER MESSAGES IF REQUIRED.

THIS WILL BE THE FINAL MESSAGE ISSUED FOR THIS EVENT UNLESS ADDITIONAL INFORMATION BECOMES AVAILABLE.

END OF TSUNAMI MESSAGE NUMBER 001=

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2020-05-20 23:51 message from INGV link

Key information extracted from original GTS message :
Evaluation Information

  • Based on historical earthquake and TSUNAMI modelling there is no threat that a TSUNAMI has been generated that can cause damage or major effect in the region
  • This message is for information only
  • 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 message issued for this event unless additional information becomes available

Original Message :

WEMM40 LIIB 202350
TSUNAMI MESSAGE NUMBER 001
NEAM INGV IT-NTWC TSUNAMI SERVICE PROVIDER
ISSUED AT 2350Z 20 MAY 2020

... TSUNAMI INFORMATION ...
THIS ALERT APPLIES TO ALBANIA ... ALGERIA ... BOSNIA_HERZEGOVINA ...
CROATIA ... CYPRUS ... EGYPT ... FRANCE ... GREECE ... ISRAEL ...
ITALY ... LEBANON ... LIBYA ... MALTA ... MONACO ... MONTENEGRO ...
MOROCCO ... SLOVENIA ... SPAIN ... SYRIA ... TUNISIA ... TURKEY ...
UK

THIS ALERT IS ADDRESSED TO ALL COUNTRIES AND INSTITUTIONS SUBSCRIBED
TO THE SERVICES OF INGV TSP IN ITS MONITORING AREA

THIS MESSAGE IS ISSUED AS ADVICE TO GOVERNMENT AGENCIES. ONLY
NATIONAL AND LOCAL GOVERNMENT AGENCIES HAVE THE AUTHORITY TO MAKE
DECISIONS REGARDING THE OFFICIAL STATE OF ALERT IN THEIR AREA AND ANY
ACTIONS TO BE TAKEN IN RESPONSE.

AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS
ORIGIN TIME - 2343Z 20 MAY 2020
COORDINATES - 35.01 NORTH 20.31 EAST
DEPTH - 18 KM
LOCATION - GREECE
MAGNITUDE - 5.7

ALERT LEVEL IS ASSIGNED ACCORDING TO THE ABOVE ESTIMATIONS OF
EARTHQUAKE PARAMETERS AND BASED ON ICG/NEAMTWS DECISION MATRIX

EVALUATION OF TSUNAMI INFORMATION
BASED ON HISTORICAL EARTHQUAKE AND TSUNAMI MODELLING THERE IS NO
THREAT THAT A TSUNAMI HAS BEEN GENERATED THAT CAN CAUSE DAMAGE OR
MAJOR EFFECT IN THE REGION. THIS MESSAGE IS FOR INFORMATION ONLY.

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 MESSAGE ISSUED FOR THIS EVENT UNLESS ADDITIONAL
INFORMATION BECOMES AVAILABLE.

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2020-05-20 23:51 message from NOA link

Key information extracted from original GTS message :
Evaluation Information

  • Based on historical earthquake and TSUNAMI modelling there is no threat that a TSUNAMI has been generated that can cause damage or major effect in the region
  • This message is for information only

Original Message :

WEME40 LGAT 202350
TSUNAMI MESSAGE NUMBER 001
NEAM NOA HL-NTWC TSUNAMI SERVICE PROVIDER
ISSUED AT 2350Z 20 MAY 2020

... TSUNAMI INFORMATION ...
THIS ALERT APPLIES TO BELGIUM ... EGYPT ... FRANCE ... GERMANY ... GREECE ...
CYPRUS ... ISRAEL ... ITALY ... LEBANON ... PORTUGAL ... SPAIN ... SWEDEN ...
TURKEY ... UNITED KINGDOM ... IOC (UNESCO) .... ERCC (EUROPEAN COMMISSION)

THIS MESSAGE IS ISSUED AS ADVICE TO GOVERNMENT AGENCIES. ONLY NATIONAL AND LOCAL
GOVERNMENT AGENCIES HAVE THE AUTHORITY TO MAKE DECISIONS REGARDING THE
OFFICIAL STATE OF ALERT IN THEIR AREA AND ANY ACTIONS TO BE TAKEN IN RESPONSE.

AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS
ORIGIN TIME - 2343 UTC WED MAY 20 2020
COORDINATES - 35.02 NORTH 20.23 EAST
DEPTH - 99.8 KM
LOCATION - 249 KM SSW FROM PILOS
MAGNITUDE - 5.9 ML

EVALUATION OF TSUNAMI INFORMATION
BASED ON HISTORICAL EARTHQUAKE AND TSUNAMI MODELLING THERE IS NO THREAT THAT A
TSUNAMI HAS BEEN GENERATED THAT CAN CAUSE DAMAGE OR MAJOR EFFECT IN THE REGION.
THIS MESSAGE IS FOR INFORMATION ONLY.

ESTIMATED INITIAL TSUNAMI WAVE ARRIVAL TIMES AT FORECAST POINTS WITHIN THE ADVISORY
AREA GIVEN BELOW. ACTUAL ARRIVAL TIMES MAY DIFFER AND THE INITIAL WAVE MAY
NOT BE THE LARGEST. A TSUNAMI IS A SERIES OF WAVES AND THE TIME BETWEEN
SUCCESSIVE WAVES CAN BE FIVE MINUTES TO ONE HOUR.

LOCATION FP COORDINATES ARRIVAL TIME ALERT LEVEL
-------------------- -------------- ------------- -----------



SUPPLEMENT MESSAGES WILL BE ISSUED AS SOON AS NEW DATA AND EVALUATION ALLOWS.
THE TSUNAMI ALERT WILL REMAIN IN EFFECT UNTIL AN END OF ALERT IS BROADCAST.

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