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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.5 mag strikes near Iwaki in Japan



Earthquake location 36.3683S, 142.587WA light earthquake magnitude 4.5 (ml/mb) strikes 169 km ESE of Iwaki, Japan (105 miles) on Thursday. Date and time of earthquake in UTC/GMT: 02/08/17 / 2017-08-02 15:11:52 / August 2, 2017 @ 3:11 pm. The earthquake was roughly at a depth of 33.91 km (21 miles). The temblor was detected at 01:11:52 / 1:11 am (local time epicenter). All ids that are associated to the event: us2000a5xy. Unique identifier: us2000a5xy. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of earthquake, 142.587° East, 36.3683° North, depth 33.91 km.

There are an estimated 13,000 light earthquakes 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 one, in the last 10 days four, in the past 30 days four and in the last 365 days twenty-two earthquakes of magnitude 3.0 or greater that have been detected in the same area.

Did you feel the quake?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage 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: 169 km ESE of Iwaki, Japan.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude 142.587° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 36.3683° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 33.91 km Depth of the event in kilometers.
Place 169km ESE 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 2017-08-02 15:11:52 Time when the event occurred. UTC/GMT
Updated 2017-08-11 00:49:38 Time when the event was most recently updated. UTC/GMT
Timezone offset 600 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 312 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 2.075 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.14 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 185 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 us2000a5xy Id of event.
Event Code 2000a5xy An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000a5xy, A comma-separated list of event ids that are associated to an event.

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