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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.6 mag has occurred near Ichinohe in Japan


Earthquake location 40.1166S, 141.8815WA light earthquake magnitude 4.6 (ml/mb) has occurred on Thursday, 50 kilometers (31 miles) from Ichinohe in Japan. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of event, longitude 141.8815 East, latitude 40.1166 North, depth = 32.81 km. Global time and date of event 18/10/17 / 2017-10-18 16:50:04 / October 18, 2017 @ 4:50 pm UTC/GMT. Event ids that are associated to the earthquake: us1000awpr. Id of event: us1000awpr. The 4.6-magnitude earthquake has occurred at 01:50:04 / 1:50 am (local time epicenter). The earthquake was roughly at a depth of 32.81 km (20 miles).

Nearby country/countries, Japan (c. 127 288 000 pop) (That might be effected). Earthquake epicenter was 77 km (48 miles) from Morioka-shi (c. 295 200 pop), 54 km (33 miles) from Hachinohe (c. 239 000 pop), 52 km (33 miles) from Miyako (c. 51 700 pop), 93 km (58 miles) from Kamaishi (c. 43 100 pop), 76 km (47 miles) from Misawa (c. 42 800 pop), 93 km (58 miles) from Hanawa (c. 36 900 pop), 94 km (58 miles) from Tōno (c. 26 800 pop). Closest city/cities/towns to epicentrum/hypocenter was Tōno, Kamaishi, Hanawa (min 5000 pop).

In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days five and in the last 365 days twenty-two earthquakes of magnitude 3.0 or greater that has occurred nearby. There are an estimated 13,000 light quakes in the world each year. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Did you feel the quake?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 50 km ESE of Ichinohe, Japan. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.6 mb The magnitude for the event.
Longitude 141.8815° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 40.1166° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 32.81 km Depth of the event in kilometers.
Place 50km ESE of Ichinohe, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-10-18 16:50:04 Time when the event occurred. UTC/GMT
Updated 2017-10-30 02:19:52 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 326 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 0.916 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.21 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 139 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 us1000awpr Id of event.
Event Code 1000awpr An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000awpr, A comma-separated list of event ids that are associated to an event.

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