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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.1 mag was detected near Farallon de Pajaros in Northern Mariana Islands



Earthquake location 21.6981S, 143.0207WA light earthquake magnitude 4.1 (ml/mb) has occurred on Sunday, 233 km NW of Farallon de Pajaros, Northern Mariana Islands (145 miles). Event id: us20004x1x. Ids that are associated to the earthquake: us20004x1x. The epicenter of the earthquake was roughly 307.03 km (191 miles) below the earth’s surface. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The 4.1-magnitude earthquake was detected at 23:47:31 / 11:47 pm (local time epicenter). Exact location of earthquake, longitude 143.0207 East, latitude 21.6981 North, depth = 307.03 km. Global date and time of event UTC/GMT: 31/01/16 / 2016-01-31 13:47:31 / January 31, 2016 @ 1:47 pm.

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. There are an estimated 13,000 light quakes in the world each year. In the past 24 hours, there have been one, in the last 10 days two, in the past 30 days five and in the last 365 days twenty-seven earthquakes of magnitude 3.0 or greater that have been detected nearby.

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: 233 km NW of Farallon de Pajaros, Northern Mariana Islands.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude 143.0207° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 21.6981° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 307.03 km Depth of the event in kilometers.
Place 233km NW of Farallon de Pajaros, 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 2016-01-31 13:47:31 Time when the event occurred. UTC/GMT
Updated 2016-02-23 19:50:48 Time when the event was most recently updated. UTC/GMT
Timezone offset 600 Timezone offset from UTC in minutes at the event epicenter.
Felt 0 The total number of felt reports
CDI 1 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 5.427 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.66 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 60 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 us20004x1x Id of event.
Event Code 20004x1x An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us20004x1x, A comma-separated list of event ids that are associated to an event.

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