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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.6 mag was detected near Koseda in Japan


Earthquake location 30.0044S, 131.4782WA light earthquake with magnitude 4.6 (ml/mb) was reported 90 kilometers (56 miles) from Koseda in Japan on Sunday. The 4.6-magnitude earthquake was detected at 14:31:56 / 2:31 pm (local time epicenter). Exact time and date of event in UTC/GMT: 28/02/21 / 2021-02-28 14:31:56 / February 28, 2021 @ 2:31 pm. Id of earthquake: us7000dfjx. Event ids that are associated: us7000dfjx. The epicenter of the earthquake was roughly 24.92 km (15 miles) below the earth’s surface. Exact location of event, depth 24.92 km, 131.4782° East, 30.0044° North. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Nearby country/countries, Japan (c. 127 288 000 pop) (That might be effected). Epicenter of the earthquake was 93 km (58 miles) from Nishinoomote (c. 17 800 pop). Nearest cities/city/towns to hypocenter/epicentrum was Nishinoomote (min 5000 pop).

In the past 24 hours, there have been three, in the last 10 days three, in the past 30 days nine and in the last 365 days twenty earthquakes of magnitude 3.0 or greater that was reported nearby. 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.

Did you feel anything?

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. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 90 km ESE of Koseda, Japan.

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More information

Parameter Value Description
Magnitude 4.6 mb The magnitude for the event.
Longitude 131.4782° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 30.0044° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 24.92 km Depth of the event in kilometers.
Place 90 km ESE of Koseda, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2021-02-28 14:31:56 Time when the event occurred. UTC/GMT
Updated 2021-03-07 19:32:45 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 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 1.74 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.6 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 123 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 us7000dfjx Id of event.
Event Code 7000dfjx An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000dfjx, A comma-separated list of event ids that are associated to an event.

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