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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.6 mag, 35 km ENE of Iwaki, Japan


Earthquake location 37.1279S, 141.2672WA light earthquake magnitude 4.6 (ml/mb) has struck on Tuesday, 35 kilometers (22 miles) from Iwaki in Japan. Date and time of earthquake in UTC/GMT: 11/12/17 / 2017-12-11 16:52:26 / December 11, 2017 @ 4:52 pm. The 4.6-magnitude earthquake has occurred at 01:52:26 / 1:52 am (local time epicenter). The earthquake occurred at a depth of 38 km (24 miles) below the earth’s surface. Id of earthquake: us2000c5lb. Event ids that are associated: us2000c5lb. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of event, longitude 141.2672 East, latitude 37.1279 North, depth = 38 km.

Closest city/cities/towns to epicentrum/hypocenter was Marumori, Funaishikawa, Daigo (min 5000 pop). Nearby country/countries that might be effected, Japan (c. 127 288 000 pop). Epicenter of the event was 35 km (22 miles) from Iwaki (c. 357 300 pop), 84 km (52 miles) from Kōriyama (c. 340 600 pop), 80 km (50 miles) from Hitachi (c. 186 300 pop), 80 km (50 miles) from Sukagawa (c. 68 800 pop), 60 km (37 miles) from Kitaibaraki (c. 50 800 pop), 89 km (56 miles) from Nihommatsu (c. 36 300 pop), 96 km (60 miles) from Funaishikawa (c. 35 300 pop).

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. In the past 24 hours, there have been three, in the last 10 days five, in the past 30 days eight and in the last 365 days ninety-seven earthquakes of magnitude 3.0 or greater that has struck near.

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, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 35 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 141.2672° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 37.1279° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 38 km Depth of the event in kilometers.
Place 35km 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 2017-12-11 16:52:26 Time when the event occurred. UTC/GMT
Updated 2017-12-27 17:52:14 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 0.831 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.43 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 144 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 us2000c5lb Id of event.
Event Code 2000c5lb An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000c5lb, A comma-separated list of event ids that are associated to an event.

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