Light earthquake, 4.3 mag strikes near Iwaki in Japan

Posted by admin on August 8, 2025 0 Comments

A light earthquake magnitude 4.3 (ml/mb) strikes 19 kilometers (12 miles) from Iwaki in Japan on Friday. Exact location, longitude 140.6629° East, latitude 37.0156° North, depth = 63.551 km. Exact time and date of event in UTC/GMT: 25/07/25 / 2025-07-25 03:16:23 / July 25, 2025 @ 3:16 am. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The temblor was detected at 03:16:23 / 3:16 am (local time epicenter). The epicenter was at a depth of 63.551 km (39 miles). Event id: us6000qyxg. Ids that are associated to the earthquake: us6000qyxg.

Epicenter of the earthquake was 86 km (53 miles) from Utsunomiya-shi (c. 449 900 pop), 20 km (12 miles) from Iwaki (c. 357 300 pop), 49 km (31 miles) from Kōriyama (c. 340 600 pop), 83 km (52 miles) from Fukushima-shi (c. 294 200 pop), 77 km (48 miles) from Mito-shi (c. 246 500 pop), 46 km (29 miles) from Hitachi (c. 186 300 pop). Close country/countries, Japan (c. 127 288 000 pop) (That might be effected). Nearest cities/city/towns to hypocenter/epicentrum was Kaminokawa, Yanagawamachi-saiwaichō, Hobaramachi (min 5000 pop).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been two, in the last 10 days four, in the past 30 days six and in the last 365 days thirty-five earthquakes of magnitude 3.0 or greater that have been detected in the same area. There are an estimated 13,000 light earthquakes 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: 19 km W of Iwaki, Japan.

More information

Parameter	Value	Description
Magnitude	4.3 mb	The magnitude for the event.
Longitude	140.6629° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	37.0156° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	63.551 km	Depth of the event in kilometers.
Place	19 km W of Iwaki, Japan	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-07-25 03:16:23	Time when the event occurred. UTC/GMT
Updated	2025-08-08 00:51:21	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	284	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	19	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	2.026	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	1.06 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	156	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	us6000qyxg	Id of event.
Event Code	6000qyxg	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us6000qyxg,	A comma-separated list of event ids that are associated to an event.

Earthquakes today

Current and latest world earthquakes breaking news, activity and articles today

Light earthquake, 4.3 mag strikes near Iwaki in Japan

Did you feel the quake?

More information

Leave a ReplyCancel reply

Follow us!

Tsunami videos

Categories

Information