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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.1 mag strikes near Muroran in Japan


Earthquake location 42.2429S, 140.9522WA light earthquake magnitude 4.1 (ml/mb) has struck on Monday, 8 kilometers (5 miles) from Muroran in Japan. Id of earthquake: us10007dqt. Event ids that are associated: us10007dqt. Global time and date of event 21/11/16 / 2016-11-21 04:09:18 / November 21, 2016 @ 4:09 am UTC/GMT. The earthquake was roughly at a depth of 128.62 km (80 miles). Exact location, longitude 140.9522° East, latitude 42.2429° North, depth = 128.62 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The 4.1-magnitude earthquake has occurred at 13:09:18 / 1:09 pm (local time epicenter).

Closest city/cities/towns to epicentrum/hypocenter was Iwanai, Chitose, Tomakomai (min 5000 pop). Event epicenter was 55 km (34 miles) from Hakodate (c. 275 700 pop), 69 km (43 miles) from Tomakomai (c. 174 800 pop), 9 km (5 miles) from Muroran (c. 96 200 pop), 86 km (53 miles) from Chitose (c. 92 900 pop), 53 km (33 miles) from Kamiiso (c. 38 100 pop), 26 km (16 miles) from Date (c. 35 300 pop). Close country/countries that might be effected, Japan (c. 127 288 000 pop).

Each year there are an estimated 13,000 light quakes in the world. 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 one, in the past 30 days one and in the last 365 days ten earthquakes of magnitude 3.0 or greater that has occurred nearby.

Questions or comments?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity 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: 8 km SSW of Muroran, Japan.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude 140.9522° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 42.2429° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 128.62 km Depth of the event in kilometers.
Place 8km SSW of Muroran, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2016-11-21 04:09:18 Time when the event occurred. UTC/GMT
Updated 2016-12-06 00:07:40 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 1.454 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.78 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 88 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 us10007dqt Id of event.
Event Code 10007dqt An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10007dqt, A comma-separated list of event ids that are associated to an event.

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