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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4 mag strikes near Kurayoshi in Japan

Earthquake location 35.3563S, 133.8545WA light earthquake with magnitude 4 (ml/mb) was detected on Friday, 9 kilometers (6 miles) from Kurayoshi in Japan. All ids that are associated to the event: us1000773r. Unique identifier: us1000773r. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact time and date of event in UTC/GMT: 21/10/16 / 2016-10-21 05:33:58 / October 21, 2016 @ 5:33 am. The 4-magnitude earthquake was detected at 14:33:58 / 2:33 pm (local time epicenter). The earthquake was roughly at a depth of 10 km (6 miles). Exact location, longitude 133.8545° East, latitude 35.3563° North, depth = 10 km.

Earthquake epicenter was 78 km (48 miles) from Okayama-shi (c. 639 700 pop), 86 km (54 miles) from Kurashiki (c. 437 600 pop), 74 km (46 miles) from Matsue-shi (c. 156 800 pop), 38 km (24 miles) from Tottori (c. 154 100 pop), 48 km (30 miles) from Yonago (c. 141 400 pop), 36 km (23 miles) from Tsuyama (c. 89 700 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Toyooka, Kurashiki, Tatsunochō-tominaga. Close country/countries that might be effected, Japan (c. 127 288 000 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 six, in the last 10 days six, in the past 30 days six and in the last 365 days six earthquakes of magnitude 3.0 or greater that has struck near.

Did you feel anything?

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. 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: 9 km SSE of Kurayoshi, Japan.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude 133.8545° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 35.3563° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 9km SSE of Kurayoshi, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2016-10-21 05:33:58 Time when the event occurred. UTC/GMT
Updated 2016-11-12 12:47:07 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 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 0.702 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.73 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 67 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 us1000773r Id of event.
Event Code 1000773r An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000773r, A comma-separated list of event ids that are associated to an event.

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