Light earthquake, 4.2 mag has occurred near Hakodate in Japan

A light earthquake magnitude 4.2 (ml/mb) strikes 12 kilometers (7 miles) from Hakodate in Japan on Friday. Exact location of earthquake, longitude 140.6599 East, latitude 41.6801 North, depth = 128.6 km. The temblor was detected at 22:22:58 / 10:22 pm (local time epicenter). Id of earthquake: us20005dww. Event ids that are associated: us20005dww. Exact time and date of earthquake 01/04/16 / 2016-04-01 13:22:58 / April 1, 2016 @ 1:22 pm UTC/GMT. The earthquake occurred at a depth of 128.6 km (80 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Earthquake epicenter was 12 km (8 miles) from Hakodate (c. 275 700 pop), 76 km (47 miles) from Muroran (c. 96 200 pop), 64 km (39 miles) from Mutsu (c. 49 200 pop), 16 km (10 miles) from Kamiiso (c. 38 100 pop), 89 km (55 miles) from Date (c. 35 300 pop), 23 km (14 miles) from Nanae (c. 30 000 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Date, Muroran, Mutsu. Country/countries that might be effected, Japan (c. 127 288 000 pop).

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. 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 nine earthquakes of magnitude 3.0 or greater that have been detected nearby.

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. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 12 km SSW of Hakodate, Japan.

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Parameter	Value	Description
Magnitude	4.2 mb	The magnitude for the event.
Longitude	140.6599° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	41.6801° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	128.6 km	Depth of the event in kilometers.
Place	12km SSW of Hakodate, Japan	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2016-04-01 13:22:58	Time when the event occurred. UTC/GMT
Updated	2016-04-15 07:59:13	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	0.889	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.8 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	99	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	us20005dww	Id of event.
Event Code	20005dww	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us20005dww,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4.2 mag has occurred near Hakodate in Japan

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