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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.2 mag, southwestern Ryukyu Islands, Japan


Earthquake location 24.3524S, 124.0629WA light earthquake with magnitude 4.2 (ml/mb) was detected on Saturday, southwestern Ryukyu Islands, Japan kilometers (0 miles) from southwestern Ryukyu Islands, Japan. The earthquake occurred at a depth of 34.85 km (22 miles) below the earth’s surface. Global date and time of event UTC/GMT: 29/04/17 / 2017-04-29 22:41:41 / April 29, 2017 @ 10:41 pm. Exact location of event, depth 34.85 km, 124.0629° East, 24.3524° North. The 4.2-magnitude earthquake has occurred at 22:41:41 / 10:41 pm (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Event ids that are associated to the earthquake: us10008pp2. Id of event: us10008pp2.

Close country/countries, Japan (c. 127 288 000 pop) (That might be effected). Epicenter of the event was 10 km (6 miles) from Ishigaki (c. 44 800 pop). Nearest cities/city/villages to epicentrum/hypocenter was Ishigaki (min 5000 pop).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. There are an estimated 13,000 light earthquakes in the world each year. 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 seven earthquakes of magnitude 3.0 or greater that have been detected in the same area.

How would you describe the shaking?

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. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: southwestern Ryukyu Islands, Japan.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude 124.0629° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 24.3524° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 34.85 km Depth of the event in kilometers.
Place southwestern Ryukyu Islands, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-04-29 22:41:41 Time when the event occurred. UTC/GMT
Updated 2017-05-12 23:47:32 Time when the event was most recently updated. UTC/GMT
Timezone offset 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 0.965 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 137 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 us10008pp2 Id of event.
Event Code 10008pp2 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10008pp2, A comma-separated list of event ids that are associated to an event.

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