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Light earthquake: M4 quake has struck near Agrihan in Northern Mariana Islands

Posted by admin on January 11, 2017 0 Comments

Earthquake location 18.5146S, 145.6393WA light earthquake with magnitude 4 (ml/mb) was detected on Thursday, 28 km S of Agrihan, Northern Mariana Islands (17 miles). The earthquake occurred at a depth of 219.85 km (137 miles) below the earth’s surface. Exact location of earthquake, longitude 145.6393 East, latitude 18.5146 North, depth = 219.85 km. Unique identifier: us10007m8a. Ids that are associated to the event: us10007m8a. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Date and time of earthquake in UTC/GMT: 15/12/16 / 2016-12-15 07:07:26 / December 15, 2016 @ 7:07 am. The 4-magnitude earthquake was detected at 17:07:26 / 5:07 pm (local time epicenter).

In the past 24 hours, there have been two, in the last 10 days five, in the past 30 days seven and in the last 365 days one hundred and thirty 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. Each year there are an estimated 13,000 light earthquakes in the world.

How would you describe the shaking?

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. 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: 28 km S of Agrihan, Northern Mariana Islands.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude 145.6393° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.5146° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 219.85 km Depth of the event in kilometers.
Place 28km S 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 2016-12-15 07:07:26 Time when the event occurred. UTC/GMT
Updated 2017-01-11 12:42:15 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 246 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 3.258 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.77 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 148 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 us10007m8a Id of event.
Event Code 10007m8a An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10007m8a, A comma-separated list of event ids that are associated to an event.

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