M 5.5 in Greece on 30 Oct 2018 15:12 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.

2018-10-30 16:11

WEME40 LGAT 301609
TSUNAMI MESSAGE NUMBER 002
NEAM NOA HL-NTWC TSUNAMI SERVICE PROVIDER
ISSUED AT 1609Z 30 OCT 2018

... 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 - 1512 UTC TUE OCT 30 2018
COORDINATES - 37.51 NORTH 20.49 EAST
DEPTH - 7.0 KM
LOCATION - IONIAN SEA
MAGNITUDE - 5.6 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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2018-10-30 15:22

WEMM40 LIIB 301521
TSUNAMI MESSAGE NUMBER 001
NEAM INGV IT-NTWC TSUNAMI SERVICE PROVIDER
ISSUED AT 1520Z 30 OCT 2018

... 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 - 1512Z 30 OCT 2018
COORDINATES - 37.60 NORTH 20.52 EAST
DEPTH - 10 KM
LOCATION - COSTA_GRECA_IONICA_GRECIA
MAGNITUDE - 5.9

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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2018-10-30 15:21

WEME40 LGAT 301519
TSUNAMI MESSAGE NUMBER 001
NEAM NOA HL-NTWC TSUNAMI SERVICE PROVIDER
ISSUED AT 1518Z 30 OCT 2018

... 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 ... 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 - 1512 UTC TUE OCT 30 2018
COORDINATES - 37.51 NORTH 20.49 EAST
DEPTH - 7.0 KM
LOCATION - IONIAN SEA
MAGNITUDE - 5.6 ML

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-CEPHALONNIA_ARGOSTO38.19N 20.49E 1521Z 30 OCT ADVISORY
GREECE-KATAKOLO 37.64N 21.32E 1522Z 30 OCT ADVISORY
GREECE-ZAKINTHOS 37.78N 20.91E 1526Z 30 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.

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