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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.2 mag, 39 km ENE of Iwaki, Japan


Earthquake location 37.15S, 141.3087WA light earthquake magnitude 4.2 (ml/mb) has occurred on Monday, 39 kilometers (24 miles) from Iwaki in Japan. The epicenter was at a depth of 38.72 km (24 miles). The temblor was reported at 02:13:23 / 2:13 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of event, depth 38.72 km, 141.3087° East, 37.15° North. Global date and time of event UTC/GMT: 24/01/16 / 2016-01-24 17:13:23 / January 24, 2016 @ 5:13 pm. All ids that are associated to the event: us20004vgn. Unique identifier: us20004vgn.

Close country/countries that might be effected, Japan (c. 127 288 000 pop). Epicenter of the earthquake was 39 km (24 miles) from Iwaki (c. 357 300 pop), 86 km (54 miles) from Kōriyama (c. 340 600 pop), 85 km (53 miles) from Hitachi (c. 186 300 pop), 83 km (52 miles) from Sukagawa (c. 68 800 pop), 64 km (40 miles) from Kitaibaraki (c. 50 800 pop), 91 km (57 miles) from Nihommatsu (c. 36 300 pop). Closest city/cities/towns to epicentrum/hypocenter was Nihommatsu, Motomiya, Kōriyama (min 5000 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 six, in the past 30 days seven and in the last 365 days fifty-three earthquakes of magnitude 3.0 or greater that have been detected in the same area. Each year there are an estimated 13,000 light earthquakes in the world.

Did you feel anything?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 39 km ENE of Iwaki, Japan.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude 141.3087° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 37.15° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 38.72 km Depth of the event in kilometers.
Place 39km 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 2016-01-24 17:13:23 Time when the event occurred. UTC/GMT
Updated 2016-02-21 17:12:00 Time when the event was most recently updated. UTC/GMT
Timezone offset 540 Timezone offset from UTC in minutes at the event epicenter.
Felt 0 The total number of felt reports
CDI 1 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 0.827 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.31 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 155 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 us20004vgn Id of event.
Event Code 20004vgn An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us20004vgn, A comma-separated list of event ids that are associated to an event.

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