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Minor World Earthquakes Magnitude -3.9

Minor earthquake, 3.9 mag was detected near Agrihan in Northern Mariana Islands

Earthquake location 19.6188S, 146.1999WA minor earthquake with magnitude 3.9 (ml/mb) was detected on Sunday, 109 km NNE of Agrihan, Northern Mariana Islands (68 miles). Exact location, longitude 146.1999° East, latitude 19.6188° North, depth = 94.09 km. The 3.9-magnitude earthquake was detected at 17:04:42 / 5:04 pm (local time epicenter). Unique identifier: us1000aupb. Ids that are associated to the event: us1000aupb. The earthquake occurred at a depth of 94.09 km (58 miles) below the earth’s surface. Exact time and date of event in UTC/GMT: 15/10/17 / 2017-10-15 07:04:42 / October 15, 2017 @ 7:04 am.

In the past 24 hours, there have been three, in the last 10 days three, in the past 30 days three and in the last 365 days twenty earthquakes of magnitude 3.0 or greater that have been detected nearby. Every year there are an estimated 130,000 minor earthquakes in the world. Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage.

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. 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: 109 km NNE of Agrihan, Northern Mariana Islands.

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More information

Parameter Value Description
Magnitude 3.9 mb The magnitude for the event.
Longitude 146.1999° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 19.6188° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 94.09 km Depth of the event in kilometers.
Place 109km NNE of Agrihan, Northern Mariana Islands Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-10-15 07:04:42 Time when the event occurred. UTC/GMT
Updated 2017-11-09 07:19:02 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 234 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 6.129 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.26 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 206 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 us1000aupb Id of event.
Event Code 1000aupb An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000aupb, A comma-separated list of event ids that are associated to an event.

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