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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4.2 quake has struck near Agrihan in Northern Mariana Islands

Posted by admin on April 6, 2018 0 Comments

Earthquake location 18.8657S, 145.7077WA light earthquake with magnitude 4.2 (ml/mb) was detected on Wednesday, 11 km NNE of Agrihan, Northern Mariana Islands (7 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact time and date of event in UTC/GMT: 07/03/18 / 2018-03-07 12:36:15 / March 7, 2018 @ 12:36 pm. Exact location of earthquake, longitude 145.7077 East, latitude 18.8657 North, depth = 201.29 km. The earthquake was roughly at a depth of 201.29 km (125 miles). Id of earthquake: us1000d4t7. Event ids that are associated: us1000d4t7. The temblor was reported at 22:36:15 / 10:36 pm (local time epicenter).

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. In the past 24 hours, there have been seven, in the last 10 days nine, in the past 30 days fourteen and in the last 365 days seventy-five earthquakes of magnitude 3.0 or greater that has occurred nearby.

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

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude 145.7077° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.8657° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 201.29 km Depth of the event in kilometers.
Place 11km 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 2018-03-07 12:36:15 Time when the event occurred. UTC/GMT
Updated 2018-04-06 05:22:10 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 271 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 3.605 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.54 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 147 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 us1000d4t7 Id of event.
Event Code 1000d4t7 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000d4t7, A comma-separated list of event ids that are associated to an event.

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