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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.1 mag strikes near Alotau in Papua New Guinea


Earthquake location -9.2772S, 150.691WA light earthquake magnitude 4.1 (ml/mb) has occurred on Saturday, 120 km NNE of Alotau, Papua New Guinea (75 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The temblor was detected at 22:32:05 / 10:32 pm (local time epicenter). Exact location, longitude 150.691° East, latitude -9.2772° South, depth = 13.86 km. The earthquake was roughly at a depth of 13.86 km (9 miles). Date and time of earthquake in UTC/GMT: 28/09/19 / 2019-09-28 12:32:05 / September 28, 2019 @ 12:32 pm. Id of earthquake: us70005s3i. Event ids that are associated: us70005s3i.

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 two, in the past 30 days two and in the last 365 days fifteen earthquakes of magnitude 3.0 or greater that have been detected in the same area. Each year there are an estimated 13,000 light earthquakes in the world.

Questions or comments?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 120 km NNE of Alotau, Papua New Guinea. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude 150.691° East Decimal degrees longitude. Negative values for western longitudes.
Latitude -9.2772° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 13.86 km Depth of the event in kilometers.
Place 120km NNE 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 2019-09-28 12:32:05 Time when the event occurred. UTC/GMT
Updated 2019-10-26 13:57:54 Time when the event was most recently updated. UTC/GMT
Timezone offset 600 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 259 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 3.487 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.24 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 210 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 us70005s3i Id of event.
Event Code 70005s3i An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us70005s3i, A comma-separated list of event ids that are associated to an event.

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