Light earthquake: M4.6 quake strikes near Nagano-shi in Japan

A light earthquake magnitude 4.6 (mg/mb) has occurred on Monday, 15 kilometers (9 miles) from Nagano-shi in Japan. The temblor was reported at 01:17:06 / 1:17 am (local time epicenter) at a depth of 21.21 km (13 miles). Global time of event 2014-12-21 04:17:06 UTC/GMT. A tsunami warning has not been issued, according to the U.S. Geological Survey. Exact location of event, longitude 138.0258 East, latitude 36.5889 North, depth 21.21 km.

Close countries, Japan (c. 127 288 000 pop). The epicenter was 16 km (10 miles) from Nagano-shi (c. 360 200 pop), 74 km (46 miles) from Toyama-shi (c. 325 500 pop), 95 km (59 miles) from Maebashi-shi (c. 282 700 pop), 93 km (58 miles) from Takasaki (c. 240 900 pop), 40 km (25 miles) from Matsumoto (c. 210 700 pop). Nearest city, towns to epicentrum/hypocenter was Kashiwazaki, Himi, Maebashi-shi.

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Leave a comment or report about shaking, activity and damage at your home, city and country. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded in: 15 km WSW of Nagano-shi, Japan.

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Parameter	Value	Description
Magnitude	4.6 mb	The magnitude for the event.
Longitude	138.0258° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	36.5889° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	21.21 km	Depth of the event in kilometers.
Place	15km WSW of Nagano-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	2014-12-21 16:17:06	Time when the event occurred. UTC/GMT
Updated	2014-12-21 19:00:17	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		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	326	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	0.149	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	69	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	usc000t8wz	Id of event.
Event Code	c000t8wz	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	usc000t8wz	A comma-separated list of event ids that are associated to an event.

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Light earthquake: M4.6 quake strikes near Nagano-shi in Japan

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