Light earthquake: M4.9 quake has struck near Hirara in Japan

A light earthquake with magnitude 4.9 (ml/mb) was detected on Monday, 135 km NW of Hirara, Japan (84 miles). The 4.9-magnitude earthquake was detected at 00:24:36 / 12:24 am (local time epicenter). The earthquake occurred at a depth of 147.34 km (92 miles). Exact location of event, longitude 124.426 East, latitude 25.7372 North, depth = 147.34 km. Exact time and date of event in UTC/GMT: 11/01/21 / 2021-01-11 00:24:36 / January 11, 2021 @ 12:24 am. Event ids that are associated to the earthquake: us6000d7by. Id of event: us6000d7by. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

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 one and in the last 365 days ten earthquakes of magnitude 3.0 or greater that has struck near.

Questions or comments?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home 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: 135 km NW of Hirara, Japan.

Hirara Japan

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Parameter	Value	Description
Magnitude	4.9 mb	The magnitude for the event.
Longitude	124.426° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	25.7372° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	147.34 km	Depth of the event in kilometers.
Place	135 km NW of Hirara, Japan	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2021-01-11 00:24:36	Time when the event occurred. UTC/GMT
Updated	2021-01-11 00:44:41	Time when the event was most recently updated. UTC/GMT
Timezone offset		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	369	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	1.801	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	79	The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type	mww	The method or algorithm used to calculate the preferred magnitude for the event.
Event Type	earthquake	Type of seismic event.
Event ID	us6000d7by	Id of event.
Event Code	6000d7by	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us6000d7by,	A comma-separated list of event ids that are associated to an event.

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Light earthquake: M4.9 quake has struck near Hirara in Japan

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