Overall Orange Earthquake alert in Japan on 21 Nov 2016 20:59 UTC

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M 6.9 in Japan on 21 Nov 2016 20:59 UTC

2016-11-21 22:32 message from NTWC

Key information extracted from original GTS message :

Evaluation

An earthquake with a preliminary magnitude of 7.3 occurred near the east coast of honshu JAPAN at 2100 UTC on monday NOVEMBER 21 2016
TSUNAMI waves have been observed
Based on all available data hazardous TSUNAMI waves are forecast for some coasts

Threat Forecast

TSUNAMI waves reaching 0.3 to 1 meters above the tide level are possible for some coasts of japan.
Actual amplitudes at the coast MAY vary from forecast amplitudes due to uncertainties in the forecast and local features. in particular maximum TSUNAMI amplitudes on atolls and at locations with fringing or barrier reefs will likely be much smaller than the forecast indicates.
For other areas covered by this product no threat is expected.

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)
Mera Jp	34.9	139.8	22: 06	0.09	08
Ofunato Honshu Jp	39	141.8	22: 07	0.28	12

Measurements Levels

SOURCE	GAUGE LOCATION	LAT	LON	TIME (UTC)	HEIGHT (m)	PERIOD (min)
PTWC	Mera Jp	34.9	139.8	22: 06	0.09	08
PTWC	Ofunato Honshu Jp	39	141.8	22: 07	0.28	12

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