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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.2 mag strikes near Hualian in Taiwan


Earthquake location 23.8596S, 122.3684WA light earthquake magnitude 4.2 (ml/mb) has struck on Friday, 78 kilometers (48 miles) from Hualian in Taiwan. Global date and time of event UTC/GMT: 04/08/17 / 2017-08-04 05:50:00 / August 4, 2017 @ 5:50 am. The temblor was picked up at 13:50:00 / 1:50 pm (local time epicenter). The epicenter was at a depth of 10 km (6 miles). All ids that are associated to the event: us2000a6cs. Unique identifier: us2000a6cs. Exact location of earthquake, longitude 122.3684 East, latitude 23.8596 North, depth = 10 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Nearby country/countries that might be effected, Taiwan (c. 22 894 000 pop). Nearest cities/city/towns to hypocenter/epicentrum was Hualian (min 5000 pop). Epicenter of the earthquake was 79 km (49 miles) from Hualian (c. 350 500 pop).

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

Questions or comments?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 78 km E of Hualian, Taiwan. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude 122.3684° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 23.8596° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 78km E of Hualian, Taiwan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-08-04 05:50:00 Time when the event occurred. UTC/GMT
Updated 2017-08-18 13:26:27 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 271 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 0.773 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.82 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 115 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 us2000a6cs Id of event.
Event Code 2000a6cs An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000a6cs, A comma-separated list of event ids that are associated to an event.

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