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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4 mag has occurred near Iwaki in Japan


Earthquake location 37.0914S, 141.1783WA light earthquake magnitude 4 (ml/mb) has occurred on Saturday, 26 kilometers (16 miles) from Iwaki in Japan. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of event, depth 66.7 km, 141.1783° East, 37.0914° North. The earthquake occurred at a depth of 66.7 km (41 miles). Event id: us10004g24. Ids that are associated to the earthquake: us10004g24. Exact time and date of earthquake 16/01/16 / 2016-01-16 12:49:28 / January 16, 2016 @ 12:49 pm UTC/GMT. The 4-magnitude earthquake was detected at 21:49:28 / 9:49 pm (local time epicenter).

Earthquake epicenter was 27 km (17 miles) from Iwaki (c. 357 300 pop), 78 km (49 miles) from Kōriyama (c. 340 600 pop), 72 km (45 miles) from Hitachi (c. 186 300 pop), 74 km (46 miles) from Sukagawa (c. 68 800 pop), 51 km (32 miles) from Kitaibaraki (c. 50 800 pop), 86 km (53 miles) from Nihommatsu (c. 36 300 pop). Closest city/cities/towns to epicentrum/hypocenter was Funaishikawa, Nihommatsu, Motomiya (min 5000 pop). Close country/countries, Japan (c. 127 288 000 pop) (That might be effected).

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

Questions or comments?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity 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: 26 km E of Iwaki, Japan.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude 141.1783° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 37.0914° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 66.7 km Depth of the event in kilometers.
Place 26km E 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 2016-01-16 12:49:28 Time when the event occurred. UTC/GMT
Updated 2016-01-29 09:03:51 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 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 0.835 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.66 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 142 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 us10004g24 Id of event.
Event Code 10004g24 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10004g24, A comma-separated list of event ids that are associated to an event.

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