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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4.1 quake has struck near Namie in Japan

Earthquake location 37.4523S, 141.4081WA light earthquake magnitude 4.1 (ml/mb) has struck on Saturday, 36 kilometers (22 miles) from Namie in Japan. The temblor was detected at 13:23:29 / 1:23 pm (local time epicenter). All ids that are associated to the event: us1000889a. Unique identifier: us1000889a. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Date and time of earthquake in UTC/GMT: 04/03/17 / 2017-03-04 04:23:29 / March 4, 2017 @ 4:23 am. The earthquake occurred at a depth of 45.92 km (29 miles). Exact location of earthquake, 141.4081° East, 37.4523° North, depth 45.92 km.

Earthquake epicenter was 64 km (40 miles) from Iwaki (c. 357 300 pop), 91 km (56 miles) from Kōriyama (c. 340 600 pop), 89 km (55 miles) from Fukushima-shi (c. 294 200 pop), 87 km (54 miles) from Iwanuma (c. 42 400 pop), 81 km (50 miles) from Watari (c. 36 300 pop), 87 km (54 miles) from Nihommatsu (c. 36 300 pop). Nearby country/countries that might be effected, Japan (c. 127 288 000 pop). Nearest cities/city/villages to epicentrum/hypocenter was Ishikawa, Kōriyama, Motomiya (min 5000 pop).

In the past 24 hours, there have been six, in the last 10 days twelve, in the past 30 days nineteen and in the last 365 days one hundred and fifty-seven earthquakes of magnitude 3.0 or greater that has occurred nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. Every year there are an estimated 13,000 light earthquakes in the world.

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. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 36 km E of Namie, Japan. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude 141.4081° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 37.4523° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 45.92 km Depth of the event in kilometers.
Place 36km E of Namie, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-03-04 04:23:29 Time when the event occurred. UTC/GMT
Updated 2017-03-29 03:25:00 Time when the event was most recently updated. UTC/GMT
Timezone offset 540 Timezone offset from UTC in minutes at the event epicenter.
Felt 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 259 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 0.643 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.61 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 225 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 us1000889a Id of event.
Event Code 1000889a An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000889a, A comma-separated list of event ids that are associated to an event.

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