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Light earthquake, 4.3 mag strikes near Alotau in Papua New Guinea


Earthquake location -9.7307S, 150.5341WA light earthquake magnitude 4.3 (ml/mb) strikes 65 kilometers (40 miles) from Alotau in Papua New Guinea on Thursday. The 4.3-magnitude earthquake was detected at 22:23:27 / 10:23 pm (local time epicenter). Exact location of earthquake, 150.5341° East, -9.7307° South, depth 10 km. The earthquake occurred at a depth of 10 km (6 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Event ids that are associated to the earthquake: us6000dcvv. Id of event: us6000dcvv. Exact time and date of event in UTC/GMT: 21/01/21 / 2021-01-21 22:23:27 / January 21, 2021 @ 10:23 pm.

Event epicenter was 66 km (41 miles) from Alotau (c. 10 000 pop). Country/countries that might be effected, Papua New Guinea (c. 6 065 000 pop). Closest city/cities/towns to epicentrum/hypocenter was Alotau (min 5000 pop).

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 two earthquakes of magnitude 3.0 or greater that has occurred nearby. Each year there are an estimated 13,000 light earthquakes in the world. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Did you feel anything?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage at your home, city 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: 65 km N of Alotau, Papua New Guinea.

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More information

Parameter Value Description
Magnitude 4.3 mb The magnitude for the event.
Longitude 150.5341° East Decimal degrees longitude. Negative values for western longitudes.
Latitude -9.7307° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 65 km N of Alotau, 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 2021-01-21 22:23:27 Time when the event occurred. UTC/GMT
Updated 2021-02-07 04:27:34 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 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 3.343 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.31 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 104 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 us6000dcvv Id of event.
Event Code 6000dcvv An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000dcvv, A comma-separated list of event ids that are associated to an event.

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