Overall Orange Earthquake alert in Taiwan on 02 Apr 2024 23:58 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 7.4 in Taiwan on 02 Apr 2024 23:58 UTC

2024-04-03 01:11 message from NTWC

Key information extracted from original GTS message :

Evaluation

An earthquake with a preliminary magnitude of 7.5 occurred in TAIWAN at 2358 UTC on tuesday APRIL 2 2024
TSUNAMI waves have been observed
Based on all available data hazardous TSUNAMI waves are forecast for some coasts

Threat Forecast

TSUNAMI waves reaching 1 to 3 meters above the tide level are possible along some coasts of china... and taiwan.
TSUNAMI waves reaching 0.3 to 1 meters above the tide level are possible for some coasts of japan.
TSUNAMI waves are forecast to be less than 0.3 meters above the tide level for the coasts of guam... indonesia... NORTHERN marianas... palau... philippines... REPUBLIC of korea... vietnam... and yap.
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 a forecast has not yet been computed. the forecast will be expanded if necessary in subsequent products.

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)
Chengong Tw	23.1	121.4	00: 41	0.45	18
Ishigakijima Jp	24.3	124.2	00: 35	0.12	12
Longdong Tw	25.1	121.9	00: 29	0.21	06

Measurements Levels

SOURCE	GAUGE LOCATION	LAT	LON	TIME (UTC)	HEIGHT (m)	PERIOD (min)
PTWC	Chengong Tw	23.1	121.4	00: 41	0.45	18
PTWC	Ishigakijima Jp	24.3	124.2	00: 35	0.12	12
PTWC	Longdong Tw	25.1	121.9	00: 29	0.21	06

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