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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.3 mag was detected near Ofunato in Japan



Earthquake location 38.84S, 142.2832WA light earthquake magnitude 4.3 (ml/mb) strikes 55 kilometers (34 miles) from Ofunato in Japan on Wednesday. The earthquake occurred at a depth of 53.8 km (33 miles). Exact location of earthquake, 142.2832° East, 38.84° North, depth 53.8 km. The temblor was reported at 10:29:37 / 10:29 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). All ids that are associated to the event: us2000abra. Unique identifier: us2000abra. Global date and time of event UTC/GMT: 23/08/17 / 2017-08-23 01:29:37 / August 23, 2017 @ 1:29 am.

Epicenter of the earthquake was 60 km (38 miles) from Kamaishi (c. 43 100 pop), 55 km (34 miles) from Ōfunato (c. 35 400 pop), 84 km (52 miles) from Tōno (c. 26 800 pop), 75 km (47 miles) from Yamada (c. 20 100 pop), 67 km (42 miles) from Ōtsuchi (c. 16 500 pop). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Tōno, Yamada, Ōtsuchi. Close country/countries, Japan (c. 127 288 000 pop) (That might be effected).

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 three, in the past 30 days eight and in the last 365 days thirty-five earthquakes of magnitude 3.0 or greater that was reported 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. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 55 km ESE of Ofunato, Japan. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.3 mb The magnitude for the event.
Longitude 142.2832° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 38.84° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 53.8 km Depth of the event in kilometers.
Place 55km ESE of Ofunato, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-08-23 01:29:37 Time when the event occurred. UTC/GMT
Updated 2017-08-29 22:52:11 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 284 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 1.522 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.05 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 us2000abra Id of event.
Event Code 2000abra An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000abra, A comma-separated list of event ids that are associated to an event.

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