Overall Green Earthquake alert in Greece on 25 Oct 2018 22:54 UTC

GDACS is a cooperation framework between the United Nations, the European Commission and disaster managers worldwide to improve alerts, information exchange and coordination in the first phase after major sudden-onset disasters.

M 6.8 in Greece on 25 Oct 2018 22:54 UTC

2018-10-26 01:33 message from INGV

Key information extracted from original GTS message :

Evaluation Watch

Sea level readings indicate a TSUNAMI was generated
This TSUNAMI can strike coastlines with a wave height greather than 0.5m and/or cause a TSUNAMI run-up greater than 1m
This center will continue to monitor sea level gauges nearest the region and report if any additional TSUNAMI wave activity is observed
Authorities should take appropriate action in response to this possibility
A TSUNAMI is a series of waves and the forst 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

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

GAUGE LOCATION	LAT	LON	TIME (UTC)	HEIGHT (m)	PERIOD (min)
Kiparissia (Greece)	37.26	21.66	23:22	0.09	7
Crotone (Italy)	39.08	17.13	00:09	0.09	8
Le_castella (Italy)	38.91	17.03	23:50	0.06	3
Reggio_calabria (Italy)	38.12	15.65	00:40	0.05	6
Messina (Italy)	38.2	15.56	01:04	0.04	8
Otranto (Italy)	40.15	18.5	00:28	0.04	8

Measurements Levels

SOURCE	GAUGE LOCATION	LAT	LON	TIME (UTC)	HEIGHT (m)	PERIOD (min)
INGV	Kiparissia (Greece)	37.26	21.66	23:22	0.09	7
INGV	Crotone (Italy)	39.08	17.13	00:09	0.09	8
INGV	Le_castella (Italy)	38.91	17.03	23:50	0.06	3
INGV	Reggio_calabria (Italy)	38.12	15.65	00:40	0.05	6
INGV	Messina (Italy)	38.2	15.56	01:04	0.04	8
INGV	Otranto (Italy)	40.15	18.5	00:28	0.04	8

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