Light earthquake: M4.5 quake has struck near Ambunti in Papua New Guinea

A light earthquake magnitude 4.5 (ml/mb) has struck on Sunday, 42 kilometers (26 miles) from Ambunti in Papua New Guinea. The 4.5-magnitude earthquake was detected at 09:43:17 / 9:43 am (local time epicenter). Event id: us6000rnc6. Ids that are associated to the earthquake: us6000rnc6. Exact location of earthquake, 143.1389° East, -4.0009° South, depth 10 km. Exact time and date of earthquake 26/10/25 / 2025-10-26 09:43:17 / October 26, 2025 @ 9:43 am UTC/GMT. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The earthquake was roughly at a depth of 10 km (6 miles).

Nearby country/countries that might be effected, Papua New Guinea (c. 6 065 000 pop). Nearest cities/city/towns to hypocenter/epicentrum was Wewak (min 5000 pop). Earthquake epicenter was 74 km (46 miles) from Wewak (c. 18 200 pop).

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 twenty-one earthquakes of magnitude 3.0 or greater that have been detected nearby. Every year there are an estimated 13,000 light earthquakes in the world.

Questions or comments?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 42 km NE of Ambunti, Papua New Guinea. This data comes from the USGS Earthquake Notification Service.

More information

Parameter	Value	Description
Magnitude	4.5 mb	The magnitude for the event.
Longitude	143.1389° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	-4.0009° South	Decimal degrees latitude. Negative values for southern latitudes.
Depth	10 km	Depth of the event in kilometers.
Place	42 km NE of Ambunti, 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	2025-10-26 09:43:17	Time when the event occurred. UTC/GMT
Updated	2025-11-17 11:56:00	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	312	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	30	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	2.845	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	109	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	us6000rnc6	Id of event.
Event Code	6000rnc6	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us6000rnc6,	A comma-separated list of event ids that are associated to an event.

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Light earthquake: M4.5 quake has struck near Ambunti in Papua New Guinea

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