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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4.2 quake has struck near Mutsu in Japan


Earthquake location 41.2136S, 141.4334WA light earthquake magnitude 4.2 (ml/mb) has occurred on Thursday, 20 kilometers (12 miles) from Mutsu in Japan. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Global time and date of event 12/08/15 / 2015-08-12 21:07:41 / August 12, 2015 @ 9:07 pm UTC/GMT. All ids that are associated to the event: us100031qf. Unique identifier: us100031qf. The temblor was reported at 06:07:41 / 6:07 am (local time epicenter). Exact location of earthquake, 141.4334° East, 41.2136° North, depth 108.34 km. The epicenter of the earthquake was roughly 108.34 km (67 miles) below the earth’s surface.

Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Namioka, Hakodate, Hachinohe. Close country/countries that might be effected, Japan (c. 127 288 000 pop). Earthquake epicenter was 72 km (45 miles) from Aomori Shi (c. 298 400 pop), 85 km (53 miles) from Hakodate (c. 275 700 pop), 80 km (49 miles) from Hachinohe (c. 239 000 pop), 20 km (12 miles) from Mutsu (c. 49 200 pop), 59 km (36 miles) from Misawa (c. 42 800 pop), 90 km (56 miles) from Namioka (c. 20 700 pop).

In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days two and in the last 365 days seventeen earthquakes of magnitude 3.0 or greater that have been detected in the same area. 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.

Questions or comments?

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: 20 km ESE of Mutsu, Japan. This information 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 141.4334° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 41.2136° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 108.34 km Depth of the event in kilometers.
Place 20km ESE of Mutsu, Japan Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2015-08-12 21:07:41 Time when the event occurred. UTC/GMT
Updated 2015-09-04 00:34:25 Time when the event was most recently updated. UTC/GMT
Timezone offset 540 Timezone offset from UTC in minutes at the event epicenter.
Felt 0 The total number of felt reports
CDI 1 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 0.712 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.82 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 130 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 us100031qf Id of event.
Event Code 100031qf An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us100031qf, A comma-separated list of event ids that are associated to an event.

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