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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.6 mag, 21 km SSW of Agrihan, Northern Mariana Islands


Earthquake location 18.6018S, 145.5643WA light earthquake magnitude 4.6 (mg/mb) has occurred on Tuesday, 21 kilometers (13 miles) from Agrihan in Northern Mariana Islands. The temblor was reported at 04:33:22 / 4:33 pm (local time epicenter) at a depth of 206.69 km (128 miles). Global time of event 2014-12-30 06:33:22 UTC/GMT. A tsunami warning has not been issued, according to the U.S. Geological Survey. Exact location of event, longitude 145.5643 East, latitude 18.6018 North, depth 206.69 km.

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Leave a comment or report about shaking, activity and damage at your home, city and country. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded in: 21 km SSW of Agrihan, Northern Mariana Islands.


More information

Parameter Value Description
Magnitude 4.6 mb The magnitude for the event.
Longitude 145.5643° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.6018° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 206.69 km Depth of the event in kilometers.
Place 21km SSW 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 2014-12-30 06:33:22 Time when the event occurred. UTC/GMT
Updated 2014-12-30 08:18:09 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 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 326 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 5.028 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 101 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 usc000tarp Id of event.
Event Code c000tarp An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS usc000tarp A comma-separated list of event ids that are associated to an event.

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