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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.1 mag was detected near Shizunai in Japan

Earthquake location 42.432S, 142.5719WA light earthquake magnitude 4.1 (ml/mb) has struck on Friday, 20 kilometers (12 miles) from Shizunai in Japan. The 4.1-magnitude earthquake was detected at 06:13:13 / 6:13 am (local time epicenter). All ids that are associated to the event: us100035iy. Unique identifier: us100035iy. Global time and date of event 27/08/15 / 2015-08-27 21:13:13 / August 27, 2015 @ 9:13 pm UTC/GMT. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The epicenter was at a depth of 77.28 km (48 miles). Exact location, longitude 142.5719° East, latitude 42.432° North, depth = 77.28 km.

Close country/countries that might be effected, Japan (c. 127 288 000 pop). Epicenter of the event was 83 km (51 miles) from Tomakomai (c. 174 800 pop), 75 km (46 miles) from Obihiro (c. 173 900 pop), 87 km (54 miles) from Chitose (c. 92 900 pop), 81 km (50 miles) from Otofuke (c. 40 900 pop), 20 km (12 miles) from Shizunai-furukawachō (c. 22 400 pop). Closest city/cities/towns to epicentrum/hypocenter was Chitose, Tomakomai, Otofuke (min 5000 pop).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been two, in the last 10 days three, in the past 30 days four and in the last 365 days twenty-three earthquakes of magnitude 3.0 or greater that have been detected in the same area. Each year there are an estimated 13,000 light earthquakes in the world.

Did you feel anything?

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. 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: 20 km ENE of Shizunai, Japan.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude 142.5719° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 42.432° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 77.28 km Depth of the event in kilometers.
Place 20km ENE of Shizunai, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2015-08-27 21:13:13 Time when the event occurred. UTC/GMT
Updated 2015-09-22 03:45:08 Time when the event was most recently updated. UTC/GMT
Timezone offset 540 Timezone offset from UTC in minutes at the event epicenter.
Felt 0 The total number of felt reports
CDI 1 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 0.597 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.71 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 55 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mwr The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us100035iy Id of event.
Event Code 100035iy An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us100035iy, A comma-separated list of event ids that are associated to an event.

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