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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.6 mag, 57 km ESE of Itoman, Japan

Earthquake location 25.8498S, 128.1607WA light earthquake magnitude 4.6 (ml/mb) has occurred on Sunday, 57 kilometers (35 miles) from Itoman in Japan. Id of earthquake: us1000hdxj. Event ids that are associated: us1000hdxj. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Global date and time of event UTC/GMT: 13/10/18 / 2018-10-13 23:19:55 / October 13, 2018 @ 11:19 pm. Exact location of earthquake, 128.1607° East, 25.8498° North, depth 10 km. The temblor was reported at 08:19:55 / 8:19 am (local time epicenter). The epicenter was at a depth of 10 km (6 miles).

Nearest cities/city/villages to epicentrum/hypocenter was Nago, Ishikawa, Okinawa (min 5000 pop). Epicenter of the event was 63 km (39 miles) from Naha-shi (c. 300 800 pop), 65 km (40 miles) from Okinawa (c. 125 500 pop), 61 km (38 miles) from Ginowan (c. 91 800 pop), 64 km (40 miles) from Gushikawa (c. 65 300 pop), 87 km (54 miles) from Nago (c. 59 600 pop), 58 km (36 miles) from Itoman (c. 57 200 pop), 61 km (38 miles) from Tomigusuku (c. 55 700 pop). Close country/countries, Japan (c. 127 288 000 pop) (That might be effected).

In the past 24 hours, there have been four, in the last 10 days four, in the past 30 days four and in the last 365 days fourteen earthquakes of magnitude 3.0 or greater that have been detected in the same area. 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.

How would you describe the shaking?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity 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: 57 km ESE of Itoman, Japan.

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More information

Parameter Value Description
Magnitude 4.6 mb The magnitude for the event.
Longitude 128.1607° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 25.8498° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 57km ESE of Itoman, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-10-13 23:19:55 Time when the event occurred. UTC/GMT
Updated 2018-10-26 22:32:40 Time when the event was most recently updated. UTC/GMT
Timezone offset 540 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 326 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 0.987 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 213 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 us1000hdxj Id of event.
Event Code 1000hdxj An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000hdxj, A comma-separated list of event ids that are associated to an event.

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