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

Posted by admin on May 1, 2025 0 Comments

A light earthquake magnitude 4.2 (ml/mb) strikes 26 kilometers (16 miles) from Ichinoseki in Japan on Monday. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of earthquake, longitude 140.8655 East, latitude 39.0241 North, depth = 16.539 km. The 4.2-magnitude earthquake was detected at 03:08:25 / 3:08 am (local time epicenter). Date and time of earthquake in UTC/GMT: 07/04/25 / 2025-04-07 03:08:25 / April 7, 2025 @ 3:08 am. The earthquake occurred at a depth of 16.539 km (10 miles) below the earth’s surface. Event id: us6000q6t2. Ids that are associated to the earthquake: us6000q6t2.

Close country/countries, Japan (c. 127 288 000 pop) (That might be effected). Closest city/cities/towns to epicentrum/hypocenter was Kamaishi, Sagae, Sakata (min 5000 pop). Epicenter of the earthquake was 85 km (53 miles) from Sendai (c. 1 063 100 pop), 84 km (52 miles) from Sendai-shi (c. 1 063 100 pop), 79 km (49 miles) from Morioka-shi (c. 295 200 pop), 77 km (48 miles) from Ishinomaki (c. 117 200 pop), 88 km (55 miles) from Sakata (c. 100 400 pop), 36 km (22 miles) from Kitakami (c. 93 900 pop).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been three, in the last 10 days three, in the past 30 days three and in the last 365 days nineteen earthquakes of magnitude 3.0 or greater that have been detected in the same area. There are an estimated 13,000 light quakes in the world each year.

Did you feel the quake?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 26 km WNW of Ichinoseki, Japan.

More information

Parameter	Value	Description
Magnitude	4.2 mb	The magnitude for the event.
Longitude	140.8655° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	39.0241° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	16.539 km	Depth of the event in kilometers.
Place	26 km WNW of Ichinoseki, Japan	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-04-07 03:08:25	Time when the event occurred. UTC/GMT
Updated	2025-05-01 00:52:09	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	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	18	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	1.77	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.47 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	153	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	us6000q6t2	Id of event.
Event Code	6000q6t2	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us6000q6t2,	A comma-separated list of event ids that are associated to an event.

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

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