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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4.2 quake has struck near Kosai-shi in Japan

Earthquake location 34.4202S, 137.564WA light earthquake with magnitude 4.2 (ml/mb) was detected on Tuesday, 33 kilometers (21 miles) from Kosai-shi in Japan. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The 4.2-magnitude earthquake was detected at 16:47:02 / 4:47 pm (local time epicenter). Exact location of event, longitude 137.564 East, latitude 34.4202 North, depth = 306.79 km. The earthquake was roughly at a depth of 306.79 km (191 miles). All ids that are associated to the event: us20009xcc. Unique identifier: us20009xcc. Global time and date of event 18/07/17 / 2017-07-18 07:47:02 / July 18, 2017 @ 7:47 am UTC/GMT.

Country/countries that might be effected, Japan (c. 127 288 000 pop). Epicenter of the earthquake was 35 km (22 miles) from Hamamatsu (c. 605 100 pop), 42 km (26 miles) from Toyohashi (c. 378 400 pop), 83 km (51 miles) from Toyota (c. 362 400 pop), 69 km (43 miles) from Okazaki (c. 352 400 pop), 74 km (46 miles) from Anjō (c. 178 400 pop), 82 km (51 miles) from Kariya (c. 139 200 pop). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Yaizu, Ōbu, Tokoname.

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. Every 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 one, in the past 30 days one and in the last 365 days seven earthquakes of magnitude 3.0 or greater that have been detected in the same area.

Did you feel the quake?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city and country. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 33 km S of Kosai-shi, Japan. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude 137.564° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 34.4202° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 306.79 km Depth of the event in kilometers.
Place 33km S of Kosai-shi, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-07-18 07:47:02 Time when the event occurred. UTC/GMT
Updated 2017-07-28 12:26:59 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 271 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 0.571 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.98 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 61 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 us20009xcc Id of event.
Event Code 20009xcc An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us20009xcc, A comma-separated list of event ids that are associated to an event.

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