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Light earthquake: M4.1 quake has struck near Junlian in China


Earthquake location 28.1681S, 104.8434WA light earthquake with magnitude 4.1 (ml/mb) was reported 32 kilometers (20 miles) from Junlian in China on Wednesday. Unique identifier: us10007thr. Ids that are associated to the event: us10007thr. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The earthquake was roughly at a depth of 10 km (6 miles). Exact location, longitude 104.8434° East, latitude 28.1681° North, depth = 10 km. Global time and date of event 28/12/16 / 2016-12-28 12:03:10 / December 28, 2016 @ 12:03 pm UTC/GMT. The temblor was reported at 20:03:10 / 8:03 pm (local time epicenter).

Event epicenter was 70 km (43 miles) from Yibin (c. 242 100 pop), 34 km (21 miles) from Xunchang (c. 64 600 pop). Country/countries that might be effected, China (c. 1 330 044 000 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Yibin, Xunchang.

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 one, in the past 30 days one and in the last 365 days two earthquakes of magnitude 3.0 or greater that have been detected in the same area. Each year there are an estimated 13,000 light earthquakes in the world.

Questions or comments?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home 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: 32 km E of Junlian, China.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude 104.8434° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 28.1681° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 32km E of Junlian, China Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2016-12-28 12:03:10 Time when the event occurred. UTC/GMT
Updated 2017-01-27 09:00:43 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 4.575 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.38 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 144 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 us10007thr Id of event.
Event Code 10007thr An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10007thr, A comma-separated list of event ids that are associated to an event.

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