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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4.3 quake has struck near Agrihan in Northern Mariana Islands

Posted by admin on November 14, 2017 0 Comments

Earthquake location 18.8475S, 145.7584WA light earthquake magnitude 4.3 (ml/mb) has struck on Saturday, 13 km NE of Agrihan, Northern Mariana Islands (8 miles). Id of earthquake: us1000axkv. Event ids that are associated: us1000axkv. Exact location of event, longitude 145.7584 East, latitude 18.8475 North, depth = 339.19 km. The earthquake occurred at a depth of 339.19 km (211 miles) below the earth’s surface. Global date and time of event UTC/GMT: 20/10/17 / 2017-10-20 19:29:55 / October 20, 2017 @ 7:29 pm. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The 4.3-magnitude earthquake has occurred at 05:29:55 / 5:29 am (local time epicenter).

Every 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. In the past 24 hours, there have been four, in the last 10 days seven, in the past 30 days nine and in the last 365 days seventy-eight earthquakes of magnitude 3.0 or greater that have been detected nearby.

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, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 13 km NE of Agrihan, Northern Mariana Islands. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.3 mb The magnitude for the event.
Longitude 145.7584° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.8475° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 339.19 km Depth of the event in kilometers.
Place 13km NE 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 2017-10-20 19:29:55 Time when the event occurred. UTC/GMT
Updated 2017-11-14 20:23:51 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 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 17.084 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.58 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 65 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 us1000axkv Id of event.
Event Code 1000axkv An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000axkv, A comma-separated list of event ids that are associated to an event.

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