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Light earthquake: M4.1 quake has struck near Taitung City in Taiwan


Earthquake location 22.3003S, 121.1865WA light earthquake with magnitude 4.1 (ml/mb) was detected on Sunday, 50 kilometers (31 miles) from Taitung City in Taiwan. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The epicenter of the earthquake was roughly 10 km (6 miles) below the earth’s surface. Global time and date of event 29/04/18 / 2018-04-29 07:02:36 / April 29, 2018 @ 7:02 am UTC/GMT. The temblor was reported at 15:02:36 / 3:02 pm (local time epicenter). Event ids that are associated to the earthquake: us1000du7n. Id of event: us1000du7n. Exact location of event, longitude 121.1865 East, latitude 22.3003 North, depth = 10 km.

Country/countries that might be effected, Taiwan (c. 22 894 000 pop). Nearest cities/city/towns to hypocenter/epicentrum was Hengchun, Taitung City (min 5000 pop). Earthquake epicenter was 51 km (32 miles) from Taitung City (c. 109 600 pop), 56 km (35 miles) from Hengchun (c. 31 300 pop).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been one, in the last 10 days three, in the past 30 days four and in the last 365 days twenty-two earthquakes of magnitude 3.0 or greater that have been detected nearby. Each year there are an estimated 13,000 light earthquakes in the world.

Questions or comments?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city and country. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 50 km S of Taitung City, Taiwan.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude 121.1865° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 22.3003° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 50km S of Taitung City, Taiwan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-04-29 07:02:36 Time when the event occurred. UTC/GMT
Updated 2018-04-29 07:24:48 Time when the event was most recently updated. UTC/GMT
Timezone offset 480 Timezone offset from UTC in minutes at the event epicenter.
Felt The total number of felt reports
CDI The maximum reported intensity for the event.
MMI The maximum estimated instrumental intensity for the event.
Alert Level The alert level from the PAGER earthquake impact scale. Green, Yellow, Orange or Red.
Review Status reviewed Indicates whether the event has been reviewed by a human.
Tsunami 0 This flag is set to "1" for large events in oceanic regions and "0" otherwise. The existence or value of this flag does not indicate if a tsunami actually did or will exist.
SIG 259 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network us The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,us, A comma-separated list of network contributors.
Number of Stations Used The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.524 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.86 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 95 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mb The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us1000du7n Id of event.
Event Code 1000du7n An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000du7n, A comma-separated list of event ids that are associated to an event.

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