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Light earthquake 4.1 mag, 3 km SSW of Makubetsu, Japan


Earthquake location 45.3381S, 141.8049WA light earthquake magnitude 4.1 (ml/mb) strikes 3 kilometers (2 miles) from Makubetsu in Japan on Friday. The temblor was reported at 09:59:32 / 9:59 am (local time epicenter). All ids that are associated to the event: us20009yr7. Unique identifier: us20009yr7. Exact time and date of event in UTC/GMT: 21/07/17 / 2017-07-21 00:59:32 / July 21, 2017 @ 12:59 am. The epicenter was at a depth of 286.45 km (178 miles). Exact location, longitude 141.8049° East, latitude 45.3381° North, depth = 286.45 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Earthquake epicenter was 13 km (8 miles) from Wakkanai (c. 41 600 pop), 4 km (2 miles) from Makubetsu (c. 25 900 pop). Nearest cities/city/towns to hypocenter/epicentrum was Wakkanai, Makubetsu (min 5000 pop). Country/countries that might be effected, Japan (c. 127 288 000 pop).

Each year there are an estimated 13,000 light earthquakes in the world. In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days one and in the last 365 days six earthquakes of magnitude 3.0 or greater that has struck near. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

How would you describe the shaking?

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 information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 3 km SSW of Makubetsu, Japan.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude 141.8049° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 45.3381° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 286.45 km Depth of the event in kilometers.
Place 3km SSW of Makubetsu, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-07-21 00:59:32 Time when the event occurred. UTC/GMT
Updated 2017-07-21 01:32:02 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 1.342 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.9 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 92 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 us20009yr7 Id of event.
Event Code 20009yr7 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us20009yr7, A comma-separated list of event ids that are associated to an event.

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