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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4.4 quake has struck near Agrihan in Northern Mariana Islands



Earthquake location 18.8728S, 145.5968WA light earthquake magnitude 4.4 (ml/mb) strikes 13 km NNW of Agrihan, Northern Mariana Islands (8 miles) on Friday. The temblor was reported at 15:57:55 / 3:57 pm (local time epicenter). 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: 11/12/15 / 2015-12-11 05:57:55 / December 11, 2015 @ 5:57 am. Event id: us20004hc3. Ids that are associated to the earthquake: us20004hc3. The earthquake occurred at a depth of 214.93 km (134 miles) below the earth’s surface. Exact location, longitude 145.5968° East, latitude 18.8728° North, depth = 214.93 km.

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

Did you feel anything?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 13 km NNW of Agrihan, Northern Mariana Islands. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.4 mb The magnitude for the event.
Longitude 145.5968° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.8728° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 214.93 km Depth of the event in kilometers.
Place 13km NNW 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 2015-12-11 05:57:55 Time when the event occurred. UTC/GMT
Updated 2016-01-07 13:17:26 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 298 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 2.52 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.84 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 64 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 us20004hc3 Id of event.
Event Code 20004hc3 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us20004hc3, A comma-separated list of event ids that are associated to an event.

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