Overall Green Earthquake alert in United States on 19 Oct 2020 20:54 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 7.6 in United States on 19 Oct 2020 20:54 UTC

2020-10-20 00:19 message from NTWC

Key information extracted from original GTS message :

Evaluation

An earthquake with a preliminary magnitude of 7.5 occurred SOUTH of alaska at 2055 UTC on monday OCTOBER 19 2020
Additional TSUNAMI observations have been made

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)
Chignik Ak	56.3	-158.4	23: 20	0.68	20
Dart 46402	51	-164.1	21: 34	0.04	16
Sand Point Ak	55.3	-160.5	23: 01	0.67	22
King Cove Ak	55.1	-162.3	23: 02	0.68	16
Dutch Hbr Unalaska	53.9	-166.5	22: 59	0.07	26

Measurements Levels

SOURCE	GAUGE LOCATION	LAT	LON	TIME (UTC)	HEIGHT (m)	PERIOD (min)
PTWC	Chignik Ak	56.3	-158.4	23: 20	0.68	20
PTWC	Dart 46402	51	-164.1	21: 34	0.04	16
PTWC	Sand Point Ak	55.3	-160.5	23: 01	0.67	22
PTWC	King Cove Ak	55.1	-162.3	23: 02	0.68	16
PTWC	Dutch Hbr Unalaska	53.9	-166.5	22: 59	0.07	26

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