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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4 quake has struck near Chongdui in China


Earthquake location 28.5569S, 85.6739WA light earthquake with magnitude 4 (ml/mb) was detected on Saturday, 53 km NNW of Chongdui, China (33 miles). Event ids that are associated to the earthquake: us10002x1k. Id of event: us10002x1k. The temblor was picked up at 09:37:42 / 9:37 am (local time epicenter). Exact location of event, longitude 85.6739 East, latitude 28.5569 North, depth = 10 km. 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). Date and time of earthquake in UTC/GMT: 01/08/15 / 2015-08-01 01:37:42 / August 1, 2015 @ 1:37 am.

In the past 24 hours, there have been five, in the last 10 days six, in the past 30 days nine and in the last 365 days one hundred and sixty-six earthquakes of magnitude 3.0 or greater that has struck near. There are an estimated 13,000 light earthquakes in the world each year. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

How would you describe the shaking?

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. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 53 km NNW of Chongdui, China.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude 85.6739° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 28.5569° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 53km NNW of Chongdui, China Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2015-08-01 01:37:42 Time when the event occurred. UTC/GMT
Updated 2015-08-22 23:53:30 Time when the event was most recently updated. UTC/GMT
Timezone offset 480 Timezone offset from UTC in minutes at the event epicenter.
Felt 0 The total number of felt reports
CDI 1 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 246 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 0.898 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.04 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 118 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 us10002x1k Id of event.
Event Code 10002x1k An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10002x1k, A comma-separated list of event ids that are associated to an event.

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