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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.3 mag, 30 km E of Tomakomai, Japan

Earthquake location 42.6855S, 141.9709WA light earthquake magnitude 4.3 (ml/mb) strikes 30 kilometers (19 miles) from Tomakomai in Japan on Thursday. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The 4.3-magnitude earthquake was detected at 15:06:29 / 3:06 pm (local time epicenter). Event id: us2000hi50. Ids that are associated to the earthquake: us2000hi50. The earthquake occurred at a depth of 35 km (22 miles) below the earth’s surface. Exact location of event, longitude 141.9709 East, latitude 42.6855 North, depth = 35 km. Exact time and date of event in UTC/GMT: 13/09/18 / 2018-09-13 06:06:29 / September 13, 2018 @ 6:06 am.

Closest city/cities/towns to epicentrum/hypocenter was Ashibetsu, Utashinai, Muroran (min 5000 pop). Event epicenter was 66 km (41 miles) from Sapporo (c. 1 883 000 pop), 31 km (19 miles) from Tomakomai (c. 174 800 pop), 58 km (36 miles) from Ebetsu (c. 134 000 pop), 90 km (56 miles) from Muroran (c. 96 200 pop), 30 km (19 miles) from Chitose (c. 92 900 pop), 60 km (37 miles) from Iwamizawa (c. 85 100 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 twenty, in the last 10 days fifty-four, in the past 30 days fifty-four and in the last 365 days seventy-eight earthquakes of magnitude 3.0 or greater that have been detected nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Did you feel the quake?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 30 km E of Tomakomai, 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 141.9709° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 42.6855° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 35 km Depth of the event in kilometers.
Place 30km E of Tomakomai, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-09-13 06:06:29 Time when the event occurred. UTC/GMT
Updated 2018-10-12 06:05:17 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 1.105 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.69 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 87 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 us2000hi50 Id of event.
Event Code 2000hi50 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000hi50, A comma-separated list of event ids that are associated to an event.

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