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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.1 mag has occurred near Northern Islands Municipality – Mayor’s Office in Northern Mariana Islands


Earthquake location 15.101S, 145.6462WA light earthquake magnitude 4.1 (ml/mb) has occurred on Sunday, 14 kilometers (9 miles) from Northern Islands Municipality – Mayor’s Office in Northern Mariana Islands. Global date and time of event UTC/GMT: 08/04/18 / 2018-04-08 04:31:01 / April 8, 2018 @ 4:31 am. Exact location, longitude 145.6462° East, latitude 15.101° North, depth = 77.9 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Event ids that are associated to the earthquake: us2000dzrv. Id of event: us2000dzrv. The epicenter was at a depth of 77.9 km (48 miles). The 4.1-magnitude earthquake was detected at 14:31:01 / 2:31 pm (local time epicenter).

Event epicenter was 17 km (11 miles) from Saipan (c. 48 200 pop), 15 km (9 miles) from San Jose Village (c. 15 000 pop). Closest city/cities/towns to epicentrum/hypocenter was Saipan, San Jose Village (min 5000 pop). Nearby country/countries, Northern Mariana Islands (c. 54 000 pop) (That might be effected).

In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days one and in the last 365 days ten earthquakes of magnitude 3.0 or greater that have been detected in the same area. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. Every year there are an estimated 13,000 light earthquakes in the world.

How would you describe the shaking?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking 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: 14 km SSW of Northern Islands Municipality – Mayor’s Office, Northern Mariana Islands.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude 145.6462° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 15.101° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 77.9 km Depth of the event in kilometers.
Place 14km SSW of Northern Islands Municipality - Mayor's Office, 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 2018-04-08 04:31:01 Time when the event occurred. UTC/GMT
Updated 2018-04-25 04:50:19 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 259 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 0.195 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.78 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 117 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 us2000dzrv Id of event.
Event Code 2000dzrv An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000dzrv, A comma-separated list of event ids that are associated to an event.

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