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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4 mag, Hokkaido, Japan region

Earthquake location 41.0298S, 140.0115WA light earthquake with magnitude 4 (ml/mb) was reported Hokkaido, Japan region kilometers (0 miles) from Hokkaido, Japan region on Monday. Global time and date of event 09/04/18 / 2018-04-09 21:25:16 / April 9, 2018 @ 9:25 pm UTC/GMT. The earthquake was roughly at a depth of 151.97 km (94 miles). Exact location, longitude 140.0115° East, latitude 41.0298° North, depth = 151.97 km. The temblor was picked up at 21:25:16 / 9:25 pm (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Event id: us2000e12k. Ids that are associated to the earthquake: us2000e12k.

Epicenter of the earthquake was 65 km (41 miles) from Aomori Shi (c. 298 400 pop), 62 km (39 miles) from Hirosaki (c. 175 000 pop), 44 km (27 miles) from Goshogawara (c. 49 100 pop), 64 km (40 miles) from Kuroishi (c. 38 600 pop), 60 km (37 miles) from Namioka (c. 20 700 pop), 39 km (24 miles) from Shimokizukuri (c. 18 900 pop). Close country/countries, Japan (c. 127 288 000 pop) (That might be effected). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Aomori Shi, Kuroishi, Hirosaki.

Each year there are an estimated 13,000 light quakes 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.

Did you feel it?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage 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: Hokkaido, Japan region.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude 140.0115° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 41.0298° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 151.97 km Depth of the event in kilometers.
Place Hokkaido, Japan region Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-04-09 21:25:16 Time when the event occurred. UTC/GMT
Updated 2018-04-30 23:39:26 Time when the event was most recently updated. UTC/GMT
Timezone offset 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 246 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 0.833 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.91 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 63 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 us2000e12k Id of event.
Event Code 2000e12k An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000e12k, A comma-separated list of event ids that are associated to an event.

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