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

Hazard models

Rapid Impact

Shakemap

Tsunami

Event summary

This earthquake is expected to have a medium humanitarian impact based on the magnitude and the affected population and their vulnerability.

Earthquake Magnitude:	7.4M
Depth:	34.8 Km
Event Date:	02 Apr 2024 23:58 UTC 03 Apr 2024 07:58 Local
Exposed Population:	2.9 million (in MMI>=VII)
Source:	NEIC us7000m9g4
Inserted at:	03 Apr 2024 00:14 UTC
INFORM Coping capacity of the alert score:	3.6 (Taiwan)
Maximun Wave Height observed:	1 m

GDACS Score

For more info on GDACS alert score click here.

	Earthquake (Shakemap)		Tsunami		GDACS score
NEIC	1.4		1		1.4
us7000m9g4	Scaled population (raster)	5.46	Max wave alert	0.51m
	C1 shakemap	-0.59	Max wave realtime	1m
	C2 shakemap	0.53
	Country Vulnerability	0
	INFORM_normalised	0.82

Maximum expected impact using different data sources.

Click on image to zoom it.

Episode Timeline

ID	Score	Date	Mag, Depth	MMI*	Population**	Tsunami risk***	Delay (hh:mm)	Source
1562635	1.2	02 Apr 2024 23:58	7.5M, 11.4km	7.61	260 thousand (in 100km)	1.6m (at 00:08)	00:12	PTWC
1562636	1.2	02 Apr 2024 23:58	7.5M, 11km	N/A	260 thousand (in 100km)	1.6m (at 00:08)	00:14	NTWC
1562637	1.4	02 Apr 2024 23:58	7.4M, 34.8km	7.81	2.9 million (in MMI>=VII)	1m (at 00:15)	00:16	NEIC

The episode that generated the alert; the next major evaluations beyond 12 hours will not trigger additional alerts.

The episode that has the last updated information.

* The max MMI detected for sources having shakemaps;
** The population detected in MMI>=7 for episode with shakemap or in a 100km radius;
*** The tsunami max height.

Estimated Tsunami affected locations

The maximum observed wave height is 1m in Hualien Tw;
The maximum Wave height is 0.5m in Hua-lien, Taiwan. This height is estimated for 3-Apr-2024 00:13:97.

Alert	Date (UTC)	Name	Country	Wave height (m)
	3-Apr-2024 00:13:97	Hua-lien	Taiwan	0.5
	3-Apr-2024 00:05:66	Hsin-ch'eng	Taiwan	0.4
	3-Apr-2024 00:15:68	Feng-pin	Taiwan	0.4
	3-Apr-2024 00:30:57	Tu-ho	Taiwan	0.3
	3-Apr-2024 00:30:57	Hsin-i	Taiwan	0.3
	3-Apr-2024 00:27:04	Cheng-kung	Taiwan	0.3
	3-Apr-2024 00:08:84	Nan-ao	Taiwan	0.2
	3-Apr-2024 00:21:63	San Hsien Tai	Taiwan	0.2
	3-Apr-2024 00:21:63	Wu-shih Pi	Taiwan	0.2
	3-Apr-2024 00:30:82	Fu-lien	Taiwan	0.2
	3-Apr-2024 00:17:59	Shih-ti-ping	Taiwan	0.2
	3-Apr-2024 00:55:36	Lao-tung	Taiwan	0.2
	3-Apr-2024 00:20:79	Chia-tsou-wan Pi	Taiwan	0.2
	3-Apr-2024 00:17:59	Ta-chiang-k'ou	Taiwan	0.1
	3-Apr-2024 00:20:43	Chang-yuan	Taiwan	0.1
	3-Apr-2024 00:33:72	Hsin-ch'ang-ts'un	Taiwan	0.1
	3-Apr-2024 01:06:36	Ta-niao	Taiwan	0.1
	3-Apr-2024 01:43:84	Hoshitate	Japan	0.1
	3-Apr-2024 01:49:97	Raile	Philippines	0.1
	3-Apr-2024 01:49:97	Itbayat	Philippines	0.1
	3-Apr-2024 01:49:97	Santa Lucia	Philippines	0.1
	3-Apr-2024 00:50:85	Sakiyama	Japan	0.1
	3-Apr-2024 01:09:71	Ivana	Philippines	0.1
	3-Apr-2024 00:32:05	Chi-hsing	Taiwan	0.1
	3-Apr-2024 01:45:19	Toyohara	Japan	0.1
	3-Apr-2024 01:45:19	Agarisuji	Japan	0.1
	3-Apr-2024 01:46:41	Maobitou	Taiwan	0.1
	3-Apr-2024 01:46:41	Kenting	Taiwan	0.1
	3-Apr-2024 01:46:41	O-luan-pi	Taiwan	0.1
	3-Apr-2024 01:46:52	Ta-kuang	Taiwan	0.1
	3-Apr-2024 01:10:78	Mahatao	Philippines	0.1
	3-Apr-2024 01:10:78	Itbud	Philippines	0.1
	3-Apr-2024 03:22:46	Chia-ho-ts'un	Taiwan	0.1
	3-Apr-2024 00:35:65	Tai-tung	Taiwan	0.1
	3-Apr-2024 01:10:78	Basco	Philippines	0.1
	3-Apr-2024 01:59:88	Aparri	Philippines	0.1
	3-Apr-2024 00:35:65	Chien-ho	Taiwan	0.1
	3-Apr-2024 00:39:97	Hsia-ta-chi	Taiwan	0.1
	3-Apr-2024 01:10:78	Sabtang	Philippines	0.1
	3-Apr-2024 02:10:32	Feng-chiang	Taiwan	0.1
	3-Apr-2024 01:42:33	Fang-shan	Taiwan	0.1
	3-Apr-2024 02:40:11	Divilican	Philippines	0.1
	3-Apr-2024 02:07:29	Punta	Philippines	0.1
	3-Apr-2024 00:35:65	Tai-ma	Taiwan	0.1
	3-Apr-2024 00:19:43	Chin-lun	Taiwan	0.1
	3-Apr-2024 00:43:46	Ch'ang-t'an-li	Taiwan	0.1
	3-Apr-2024 00:55:36	Chin-shan	Taiwan	0.1
	3-Apr-2024 02:49:76	Che-cheng	Taiwan	0.1
	3-Apr-2024 03:02:31	T'ien-ch'ien-ts'o	Taiwan	0.1
	3-Apr-2024 03:02:31	Shui-ti-liao	Taiwan	0.1
	3-Apr-2024 02:01:76	Poso	Philippines	0.1
	3-Apr-2024 01:46:52	Lapusan	Philippines	0.1
	3-Apr-2024 01:28:37	Nan-liao	Taiwan	0.1
	3-Apr-2024 01:16:65	Shirabaramitake	Japan	0.1
	3-Apr-2024 01:47:87	Ishigaki	Japan	0.1
	3-Apr-2024 01:47:87	Shirafu	Japan	0.1
	3-Apr-2024 00:38:45	Ibarama	Japan	0.1
	3-Apr-2024 01:10:35	Nakanmuan	Philippines	0.1
	3-Apr-2024 01:10:35	Chavayan	Philippines	0.1
	3-Apr-2024 02:03:53	Banoa	Philippines	0.1
	3-Apr-2024 02:03:53	Visita	Philippines	0.1
	3-Apr-2024 03:03:95	Tangatong	Philippines	0.1
	3-Apr-2024 02:20:53	Ta-lin-pu	Taiwan	0.1
	3-Apr-2024 02:20:53	I-jen	Taiwan	0.1
	3-Apr-2024 02:14:83	San-chih	Taiwan	0.1
	3-Apr-2024 02:47:97	Aka	Japan	0.1
	3-Apr-2024 02:47:97	Zamami	Japan	0.1
	3-Apr-2024 02:47:97	Awaren	Japan	0.1
	3-Apr-2024 02:47:97	Tokashiku	Japan	0.1
	3-Apr-2024 01:33:16	Minabul	Philippines	0.1
	3-Apr-2024 02:33:71	Claveria	Philippines	0.1
	3-Apr-2024 02:13:74	Abulug	Philippines	0.1
	3-Apr-2024 01:53:84	Fugu	Philippines	0.1
	3-Apr-2024 02:47:97	Currimao	Philippines	0.1

See full locations list (RSS)

Initial conditions

Title: ""M 7.4, 18 km SSW of Hualien City, Taiwan""

Fault parameters

Latitude: 23.819
Longitude: 121.562
Length: 79 km
Width: 22 km
Magnitude: 7.4 M

Okada parameters:

Slip: 2 m
Strike: 262 (geogr angle: north=0, south=180)
Dip: 14 degree
Rake: 90 degree
Depth: 35 km

Calculation parameters

Calculation space (lon/lat): 114.062, 16.319, 129.062, 31.319
Instead of Step -> use Cell size:1.25 minutes

Sea Level

More information

Timeline:
Tsunami calculations performed to this case, click here
Montecarlo:
Tsunami Montecarlo simulation performed to this case, click here

Populated places affected by tsunami:
http://webcritech.jrc.ec.europa.eu/ModellingOutput/TsunamiSurge/JETS_System/2024/04/35262/locations.xml
Populated places affected by tsunami (KML):
http://webcritech.jrc.ec.europa.eu/ModellingOutput/TsunamiSurge/JETS_System/2024/04/35262/locations.kml

For a full list of available products related to this event, please refer to the GDACS Resources page.

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While we try everything to ensure accuracy, this information is purely indicative and should not be used for any decision making without alternate sources of information.
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