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



Earthquake location 38.2616S, 141.5872WA light earthquake magnitude 4.3 (ml/mb) strikes 30 kilometers (19 miles) from Ishinomaki in Japan on Monday. Date and time of earthquake in UTC/GMT: 31/07/17 / 2017-07-31 13:06:59 / July 31, 2017 @ 1:06 pm. The earthquake occurred at a depth of 50.01 km (31 miles) below the earth’s surface. The temblor was picked up at 22:06:59 / 10:06 pm (local time epicenter). Event ids that are associated to the earthquake: us2000a2vd. Id of event: us2000a2vd. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of earthquake, longitude 141.5872 East, latitude 38.2616 North, depth = 50.01 km.

Country/countries that might be effected, Japan (c. 127 288 000 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Ōfunato, Shiroishi, Ichinoseki. The epicenter was 63 km (39 miles) from Sendai (c. 1 063 100 pop), 62 km (39 miles) from Sendai-shi (c. 1 063 100 pop), 30 km (19 miles) from Ishinomaki (c. 117 200 pop), 65 km (40 miles) from Furukawa (c. 76 300 pop), 83 km (51 miles) from Ichinoseki (c. 63 000 pop), 49 km (30 miles) from Shiogama (c. 59 500 pop).

Each year there are an estimated 13,000 light earthquakes in the world. In the past 24 hours, there have been one, in the last 10 days two, in the past 30 days eleven and in the last 365 days one hundred and two earthquakes of magnitude 3.0 or greater that have been detected in the same area. 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: 30 km SE of Ishinomaki, 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 141.5872° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 38.2616° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 50.01 km Depth of the event in kilometers.
Place 30km SE 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 2017-07-31 13:06:59 Time when the event occurred. UTC/GMT
Updated 2017-07-31 14:05:19 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 0.741 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.87 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 135 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 us2000a2vd Id of event.
Event Code 2000a2vd An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000a2vd, A comma-separated list of event ids that are associated to an event.

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