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Light earthquake: M4.3 quake has struck near Ishinomaki in Japan

Earthquake location 37.8889S, 141.691WA light earthquake with magnitude 4.3 (ml/mb) was reported 67 kilometers (42 miles) from Ishinomaki in Japan on Sunday. The earthquake was roughly at a depth of 54.44 km (34 miles). The 4.3-magnitude earthquake has occurred at 05:13:37 / 5:13 am (local time epicenter). Exact time and date of event in UTC/GMT: 20/10/18 / 2018-10-20 20:13:37 / October 20, 2018 @ 8:13 pm. All ids that are associated to the event: us1000hf2k. Unique identifier: us1000hf2k. Exact location of event, depth 54.44 km, 141.691° East, 37.8889° North. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Country/countries that might be effected, Japan (c. 127 288 000 pop). Earthquake epicenter was 83 km (52 miles) from Sendai (c. 1 063 100 pop), 83 km (52 miles) from Sendai-shi (c. 1 063 100 pop), 68 km (42 miles) from Ishinomaki (c. 117 200 pop), 75 km (46 miles) from Shiogama (c. 59 500 pop), 90 km (56 miles) from Tomiya (c. 42 500 pop), 77 km (48 miles) from Iwanuma (c. 42 400 pop). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Kogota, Tomiya, Wakuya.

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 five, in the last 10 days six, in the past 30 days nine and in the last 365 days sixty-seven earthquakes of magnitude 3.0 or greater that was reported nearby.

How would you describe the shaking?

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. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 67 km SSE of Ishinomaki, Japan.

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More information

Parameter Value Description
Magnitude 4.3 mb The magnitude for the event.
Longitude 141.691° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 37.8889° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 54.44 km Depth of the event in kilometers.
Place 67km SSE of Ishinomaki, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-10-20 20:13:37 Time when the event occurred. UTC/GMT
Updated 2018-10-27 22:44:19 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 0.713 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.64 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 123 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 us1000hf2k Id of event.
Event Code 1000hf2k An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000hf2k, A comma-separated list of event ids that are associated to an event.

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