M 6.4 in Greece on 12 Oct 2021 09:24 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.



2021-10-12 09:24 message from NOA link

Key information extracted from original GTS message :
Evaluation Advisory

  • It is not known that a TSUNAMI was generated
  • This watch 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 less than 0.5m and/or cause a TSUNAMI run-up less 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

Original Message :

WEME40 LGAT 120933

TSUNAMI MESSAGE NUMBER 001

NEAM NOA HL-NTWC TSUNAMI SERVICE PROVIDER

ISSUED AT 0931Z 12 OCT 2021



... TSUNAMI ADVISORY ...

THIS ALERT APPLIES TO GREECE



... 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 - 0924 UTC TUE OCT 12 2021

COORDINATES - 34.92 NORTH 26.37 EAST

DEPTH - 20.0 KM

LOCATION - CRETE, GREECE

MAGNITUDE - 6.3 Mwp



EVALUATION OF TSUNAMI ADVISORY

IT IS NOT KNOWN THAT A TSUNAMI WAS GENERATED. THIS WATCH 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 LESS THAN 0.5M AND/OR

CAUSE A TSUNAMI RUN-UP LESS 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.



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

-------------------- -------------- ------------- -----------



GREECE-IERAPETRA 35.01N 25.74E 0934Z 12 OCT ADVISORY

GREECE-SITEIA 35.23N 26.11E 0950Z 12 OCT ADVISORY

GREECE-AGIOS_NIKOLAOS 35.21N 25.72E 0954Z 12 OCT ADVISORY



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.



2021-10-12 09:24 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

Original Message :

WEME40 LGAT 121226

TSUNAMI MESSAGE NUMBER 002

NEAM NOA HL-NTWC TSUNAMI SERVICE PROVIDER

ISSUED AT 1225Z 12 OCT 2021



... TSUNAMI ADVISORY CANCELLATION ...

THIS ALERT APPLIES TO GREECE



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 - 0924 UTC TUE OCT 12 2021

COORDINATES - 34.92 NORTH 26.37 EAST

DEPTH - 20.0 KM

LOCATION - CRETE, GREECE

MAGNITUDE - 6.3 Mwp



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.



2021-10-12 09:24 message from KOERI link

Key information extracted from original GTS message :
Evaluation Advisory

  • 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 less than 0.5m and/or cause a TSUNAMI run-up less 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

Original Message :

WEME40 LTAA 120930

TSUNAMI MESSAGE NUMBER 001

NEAM TSUNAMI SERVICE PROVIDER KOERI (TURKEY)

ISSUED AT 0930Z 12 OCT 2021



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



... TSUNAMI ADVISORY ...

THIS ALERT APPLIES TO GREECE



... TSUNAMI INFORMATION ...

THIS ALERT APPLIES TO ALBANIA ... CROATIA ... CYPRUS ... EGYPT ... 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 - 0924Z 12 OCT 2021

COORDINATES - 34.91 NORTH 26.26 EAST

DEPTH - 15.00 KM

LOCATION - CRETE, GREECE

MAGNITUDE - 6.2 [MWP]

VALUE IS SUBJECT TO FURTHER REVISION UPON AVAILABILITY OF ADDITIONAL SEISMIC DATA ? MAY DIFFER FROM FINAL MAGNITUDE ESTIMATION.



EVALUATION OF TSUNAMI ADVISORY

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 LESS THAN 0.5M AND/OR CAUSE A TSUNAMI RUN-UP LESS 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.



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.



ESTIMATED INITIAL TSUNAMI WAVE ARRIVAL TIMES AT FORECAST POINTS WITHIN THE MONITORING AREA ARE 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 FORECAST POINT COORDINATES ARRIVAL TIME LEVEL

------------------------------- ----------------- ------------- -----

GREECE - IERAPETRA 35.0090 25.7430 0935Z 12 OCT ADVISORY

GREECE - SITEIA 35.2320 26.1050 0952Z 12 OCT ADVISORY

GREECE - AGIOS NIKOLAOS 35.2070 25.7240 0959Z 12 OCT ADVISORY





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.



END OF TSUNAMI MESSAGE NUMBER 001=



2021-10-12 09:24 message from KOERI 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 local changes in currents and resonance in harbours
  • Authorities should be aware of this possibility and take appropriate action

Original Message :

WEME40 LTAA 121230

TSUNAMI MESSAGE NUMBER 002

NEAM TSUNAMI SERVICE PROVIDER KOERI (TURKEY)

ISSUED AT 1230Z 12 OCT 2021



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



... TSUNAMI ADVISORY CANCELLATION ...

THIS ALERT APPLIES TO GREECE ...



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 - 0924Z 12 OCT 2021

COORDINATES - 34.91 NORTH 26.26 EAST

DEPTH - 15.00 KM

LOCATION - CRETE, GREECE

MAGNITUDE - 6.2 [Mwp]



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 LOCAL 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.



END OF TSUNAMI MESSAGE NUMBER 002=



2021-10-12 09:24 message from INGV link

Key information extracted from original GTS message :
Evaluation Advisory

  • It is not known that a TSUNAMI was generated
  • This watch 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 less than 0.5m and/or cause a TSUNAMI run-up less 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

Original Message :

WEMM40 LIIB 120932

TSUNAMI MESSAGE NUMBER 001

NEAM INGV IT-NTWC TSUNAMI SERVICE PROVIDER

ISSUED AT 0931Z 12 OCT 2021



... TSUNAMI ADVISORY ...

THIS ALERT APPLIES TO GREECE



... 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 - 0924Z 12 OCT 2021

COORDINATES - 34.88 NORTH 26.27 EAST

DEPTH - 20 KM

LOCATION - CRETE_GREECE

MAGNITUDE - 6.1



ALERT LEVEL IS ASSIGNED ACCORDING TO THE ABOVE ESTIMATIONS OF

EARTHQUAKE PARAMETERS AND BASED ON ICG/NEAMTWS DECISION MATRIX



EVALUATION OF TSUNAMI ADVISORY

IT IS NOT KNOWN THAT A TSUNAMI WAS GENERATED. THIS WATCH 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 LESS

THAN 0.5M AND/OR CAUSE A TSUNAMI RUN-UP LESS 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.



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.



ESTIMATED INITIAL TSUNAMI WAVE ARRIVAL TIMES AT FORECAST POINTS WITHIN

THE WATCH AREA ARE 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, FORECAST POINT COORDINATES, ARRIVAL TIME, ALERT LEVEL

(ADVISORY, WATCH)

----------------------------------------------------------

GREECE - KASOS 35.42N 26.92E 0940Z 12 OCT ADVISORY

GREECE - IERAPETRA 35.01N 25.74E 0940Z 12 OCT ADVISORY

GREECE - SITEIA 35.23N 26.10E 0946Z 12 OCT ADVISORY

GREECE - AGIOS_NIKOLAOS 35.21N 25.72E 0954Z 12 OCT ADVISORY



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.



=



2021-10-12 09:24 message from INGV 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 TSUNAMI that cause locally changes in currents and resonance in harbours authorities should be aware of this possibility and take appropriate action

Original Message :

WEMM40 LIIB 121328

TSUNAMI MESSAGE NUMBER 002

NEAM INGV IT-NTWC TSUNAMI SERVICE PROVIDER

ISSUED AT 1328Z 12 OCT 2021



... TSUNAMI ADVISORY CANCELLATION ...

THIS ALERT APPLIES TO GREECE



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 - 0924Z 12 OCT 2021

COORDINATES - 34.88 NORTH 26.27 EAST

DEPTH - 20 KM

LOCATION - CRETE_GREECE

MAGNITUDE - 6.1



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 TSUNAMI 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.



=