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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.3 mag has occurred near Agrihan in Northern Mariana Islands



Earthquake location 19.2403S, 145.5874WA light earthquake magnitude 4.3 (ml/mb) strikes 53 km N of Agrihan, Northern Mariana Islands (33 miles) on Saturday. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location, longitude 145.5874° East, latitude 19.2403° North, depth = 120.74 km. The 4.3-magnitude earthquake has occurred at 04:21:22 / 4:21 am (local time epicenter). Id of earthquake: us1000d7xx. Event ids that are associated: us1000d7xx. The earthquake was roughly at a depth of 120.74 km (75 miles). Exact time and date of event in UTC/GMT: 16/03/18 / 2018-03-16 18:21:22 / March 16, 2018 @ 6:21 pm.

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 sixty-four earthquakes of magnitude 3.0 or greater that have been detected nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. Each year there are an estimated 13,000 light quakes in the world.

Did you feel it?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city and country. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 53 km N of Agrihan, Northern Mariana Islands.

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More information

Parameter Value Description
Magnitude 4.3 mb The magnitude for the event.
Longitude 145.5874° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 19.2403° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 120.74 km Depth of the event in kilometers.
Place 53km N 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 2018-03-16 18:21:22 Time when the event occurred. UTC/GMT
Updated 2018-04-14 21:19:44 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 3.982 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.71 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 101 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 us1000d7xx Id of event.
Event Code 1000d7xx An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000d7xx, A comma-separated list of event ids that are associated to an event.

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