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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.6 mag was detected near Iwaki in Japan


Earthquake location 37.1385S, 141.41WA light earthquake with magnitude 4.6 (ml/mb) was reported 47 kilometers (29 miles) from Iwaki in Japan on Thursday. Exact location, longitude 141.41° East, latitude 37.1385° North, depth = 10 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The 4.6-magnitude earthquake has occurred at 05:08:34 / 5:08 am (local time epicenter). Unique identifier: us20007z06. Ids that are associated to the event: us20007z06. The epicenter of the earthquake was roughly 10 km (6 miles) below the earth’s surface. Global time and date of event 07/12/16 / 2016-12-07 20:08:34 / December 7, 2016 @ 8:08 pm UTC/GMT.

Nearby country/countries that might be effected, Japan (c. 127 288 000 pop). Event epicenter was 48 km (30 miles) from Iwaki (c. 357 300 pop), 95 km (59 miles) from Kōriyama (c. 340 600 pop), 90 km (56 miles) from Hitachi (c. 186 300 pop), 92 km (57 miles) from Sukagawa (c. 68 800 pop), 71 km (44 miles) from Kitaibaraki (c. 50 800 pop), 77 km (48 miles) from Takahagi (c. 33 600 pop), 81 km (51 miles) from Funehikimachi-funehiki (c. 23 500 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Kōriyama, Sukagawa, Hitachi.

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 twelve, in the last 10 days nineteen, in the past 30 days eighty-four and in the last 365 days one hundred and fourty-seven earthquakes of magnitude 3.0 or greater that have been detected nearby.

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. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 47 km ENE of Iwaki, Japan. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.6 mb The magnitude for the event.
Longitude 141.41° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 37.1385° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 47km ENE of Iwaki, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2016-12-07 20:08:34 Time when the event occurred. UTC/GMT
Updated 2017-01-04 15:43:12 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 2.638 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.12 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 161 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 us20007z06 Id of event.
Event Code 20007z06 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us20007z06, A comma-separated list of event ids that are associated to an event.

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