Light earthquake, 4.3 mag was detected near Madang in Papua New Guinea

A light earthquake magnitude 4.3 (ml/mb) has occurred on Monday, 58 kilometers (36 miles) from Madang in Papua New Guinea. Exact location of event, longitude 146.089 East, latitude -5.6563 South, depth = 74.92 km. Exact time and date of event in UTC/GMT: 30/06/25 / 2025-06-30 09:31:36 / June 30, 2025 @ 9:31 am. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The temblor was picked up at 09:31:36 / 9:31 am (local time epicenter). The epicenter of the earthquake was roughly 74.92 km (47 miles) below the earth’s surface. Event ids that are associated to the earthquake: us7000qbv0. Id of event: us7000qbv0.

Earthquake epicenter was 58 km (36 miles) from Madang (c. 27 400 pop), 91 km (57 miles) from Goroka (c. 18 500 pop), 75 km (46 miles) from Kainantu (c. 8 500 pop). Close country/countries that might be effected, Papua New Guinea (c. 6 065 000 pop). Closest city/cities/towns to epicentrum/hypocenter was Goroka, Kainantu, Madang (min 5000 pop).

Each year there are an estimated 13,000 light quakes in the world. In the past 24 hours, there have been five, in the last 10 days six, in the past 30 days eleven and in the last 365 days fifty-seven earthquakes of magnitude 3.0 or greater that was reported nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

How would you describe the shaking?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage 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: 58 km SE of Madang, Papua New Guinea.

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Parameter	Value	Description
Magnitude	4.3 mb	The magnitude for the event.
Longitude	146.089° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	-5.6563° South	Decimal degrees latitude. Negative values for southern latitudes.
Depth	74.92 km	Depth of the event in kilometers.
Place	58 km SE of Madang, Papua New Guinea	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-06-30 09:31:36	Time when the event occurred. UTC/GMT
Updated	2025-07-24 13:59:22	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	29	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	3.808	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.69 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	86	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	us7000qbv0	Id of event.
Event Code	7000qbv0	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us7000qbv0,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4.3 mag was detected near Madang in Papua New Guinea

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