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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.1 mag has occurred near Hachijo-jima in Japan

Earthquake location 32.5215S, 137.9251WA light earthquake magnitude 4.1 (ml/mb) has occurred on Monday, 186 km WSW of Hachijo-jima, Japan (116 miles). The epicenter of the earthquake was roughly 359.2 km (223 miles) below the earth’s surface. Exact location of earthquake, 137.9251° East, 32.5215° North, depth 359.2 km. Exact time and date of event in UTC/GMT: 21/10/19 / 2019-10-21 14:34:22 / October 21, 2019 @ 2:34 pm. The 4.1-magnitude earthquake has occurred at 23:34:22 / 11:34 pm (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Id of earthquake: us70006171. Event ids that are associated: us70006171.

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

Questions or comments?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage 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: 186 km WSW of Hachijo-jima, 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 137.9251° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 32.5215° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 359.2 km Depth of the event in kilometers.
Place 186km WSW of Hachijo-jima, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2019-10-21 14:34:22 Time when the event occurred. UTC/GMT
Updated 2019-10-30 19:02:04 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 1.674 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.57 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 107 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 us70006171 Id of event.
Event Code 70006171 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us70006171, A comma-separated list of event ids that are associated to an event.

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