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Light earthquake: M4.2 quake has struck near Iwaki in Japan

Posted by admin on July 29, 2020 0 Comments

Earthquake location 36.9226S, 142.0682WA light earthquake with magnitude 4.2 (ml/mb) was detected on Saturday, 106 km E of Iwaki, Japan (66 miles). The epicenter of the earthquake was roughly 35.75 km (22 miles) below the earth’s surface. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of earthquake, longitude 142.0682 East, latitude 36.9226 North, depth = 35.75 km. Exact time and date of event in UTC/GMT: 11/07/20 / 2020-07-11 07:34:12 / July 11, 2020 @ 7:34 am. The 4.2-magnitude earthquake was detected at 07:34:12 / 7:34 am (local time epicenter). Event ids that are associated to the earthquake: us7000aqbg. Id of event: us7000aqbg.

There are an estimated 13,000 light quakes in the world each year. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been eight, in the last 10 days eleven, in the past 30 days sixteen and in the last 365 days sixty-five earthquakes of magnitude 3.0 or greater that have been detected nearby.

Questions or comments?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home 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: 106 km E of Iwaki, Japan.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude 142.0682° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 36.9226° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 35.75 km Depth of the event in kilometers.
Place 106 km 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 2020-07-11 07:34:12 Time when the event occurred. UTC/GMT
Updated 2020-07-29 05:55:08 Time when the event was most recently updated. UTC/GMT
Timezone offset 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 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 3.123 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.59 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 151 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 us7000aqbg Id of event.
Event Code 7000aqbg An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000aqbg, A comma-separated list of event ids that are associated to an event.

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