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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.2 mag strikes near Iwaki in Japan



Earthquake location 36.9032S, 141.0213WA light earthquake magnitude 4.2 (ml/mb) has occurred on Sunday, 20 kilometers (12 miles) from Iwaki in Japan. All ids that are associated to the event: us10007ryc. Unique identifier: us10007ryc. The epicenter was at a depth of 46.61 km (29 miles). Exact location of earthquake, 141.0213° East, 36.9032° North, depth 46.61 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Global time and date of event 08/01/17 / 2017-01-08 04:15:41 / January 8, 2017 @ 4:15 am UTC/GMT. The temblor was reported at 13:15:41 / 1:15 pm (local time epicenter).

Closest city/cities/towns to epicentrum/hypocenter was Nihommatsu, Tomobe, Kasama (min 5000 pop). Event epicenter was 20 km (13 miles) from Iwaki (c. 357 300 pop), 79 km (49 miles) from Kōriyama (c. 340 600 pop), 81 km (50 miles) from Mito-shi (c. 246 500 pop), 47 km (29 miles) from Hitachi (c. 186 300 pop), 71 km (44 miles) from Hitachi-Naka (c. 156 800 pop), 72 km (45 miles) from Katsuta (c. 156 000 pop). Country/countries that might be effected, Japan (c. 127 288 000 pop).

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

Questions or comments?

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: 20 km SE of Iwaki, Japan.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude 141.0213° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 36.9032° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 46.61 km Depth of the event in kilometers.
Place 20km SE 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 2017-01-08 04:15:41 Time when the event occurred. UTC/GMT
Updated 2017-02-01 03:22:31 Time when the event was most recently updated. UTC/GMT
Timezone offset 540 Timezone offset from UTC in minutes at the event epicenter.
Felt 2 The total number of felt reports
CDI 2.7 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 272 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 0.981 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.97 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 134 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 us10007ryc Id of event.
Event Code 10007ryc An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10007ryc, A comma-separated list of event ids that are associated to an event.

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