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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.5 mag strikes near Katsuura in Japan


Earthquake location 34.0874S, 141.3745WA light earthquake with magnitude 4.5 (ml/mb) was detected on Sunday, 152 km SE of Katsuura, Japan (94 miles). The earthquake occurred at a depth of 10 km (6 miles). The temblor was picked up at 00:57:36 / 12:57 am (local time epicenter). Global date and time of event UTC/GMT: 21/02/21 / 2021-02-21 00:57:36 / February 21, 2021 @ 12:57 am. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of earthquake, 141.3745° East, 34.0874° North, depth 10 km. Unique identifier: us7000ddmd. Ids that are associated to the event: us7000ddmd.

Each 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 four, in the past 30 days six and in the last 365 days thirty-one earthquakes of magnitude 3.0 or greater that has occurred nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

How would you describe the shaking?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity 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: 152 km SE of Katsuura, Japan.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude 141.3745° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 34.0874° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 152 km SE of Katsuura, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2021-02-21 00:57:36 Time when the event occurred. UTC/GMT
Updated 2021-03-12 23:56:20 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 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 1.623 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.82 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 143 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 us7000ddmd Id of event.
Event Code 7000ddmd An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000ddmd, A comma-separated list of event ids that are associated to an event.

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