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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4 quake has struck near Farallon de Pajaros in Northern Mariana Islands


Earthquake location 21.598S, 143.0225WA light earthquake magnitude 4 (ml/mb) has struck on Monday, 227 km WNW of Farallon de Pajaros, Northern Mariana Islands (141 miles). All ids that are associated to the event: us10003xug. Unique identifier: us10003xug. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of event, longitude 143.0225 East, latitude 21.598 North, depth = 307.03 km. The 4-magnitude earthquake has occurred at 12:38:49 / 12:38 pm (local time epicenter). Global date and time of event UTC/GMT: 09/11/15 / 2015-11-09 02:38:49 / November 9, 2015 @ 2:38 am. The epicenter was at a depth of 307.03 km (191 miles).

There are an estimated 13,000 light earthquakes in the world each year. 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 twenty-two earthquakes of magnitude 3.0 or greater that has struck near. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Did you feel it?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 227 km WNW of Farallon de Pajaros, Northern Mariana Islands.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude 143.0225° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 21.598° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 307.03 km Depth of the event in kilometers.
Place 227km WNW 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 2015-11-09 02:38:49 Time when the event occurred. UTC/GMT
Updated 2015-11-24 03:37:19 Time when the event was most recently updated. UTC/GMT
Timezone offset 600 Timezone offset from UTC in minutes at the event epicenter.
Felt 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 246 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 5.526 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.64 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 116 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 us10003xug Id of event.
Event Code 10003xug An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10003xug, A comma-separated list of event ids that are associated to an event.

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