Overall Green Earthquake alert in Antarctica on 23 Jan 2021 23:36 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 6.9 in Antarctica on 23 Jan 2021 23:36 UTC

2021-01-24 01:05 message from NTWC

Key information extracted from original GTS message :

Evaluation

An earthquake with a preliminary magnitude of 7.0 occurred in the SOUTH shetland ISLANDS at 2337 UTC on saturday JANUARY 23 2021
Small TSUNAMI waves have been observed

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)
Antarctica Base Pr	-62.5	-59.7	00: 21	0.04	24
Ohiggins Cl	-63.3	-57.9	00: 24	0.04	30

Measurements Levels

SOURCE	GAUGE LOCATION	LAT	LON	TIME (UTC)	HEIGHT (m)	PERIOD (min)
PTWC	Antarctica Base Pr	-62.5	-59.7	00: 21	0.04	24
PTWC	Ohiggins Cl	-63.3	-57.9	00: 24	0.04	30

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