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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4 mag strikes near Agrihan in Northern Mariana Islands

Posted by admin on August 28, 2016 0 Comments

Earthquake location 18.7247S, 145.1591WA light earthquake magnitude 4 (ml/mb) has struck on Monday, 53 km W of Agrihan, Northern Mariana Islands (33 miles). The 4-magnitude earthquake has occurred at 05:00:14 / 5:00 am (local time epicenter). The epicenter was at a depth of 186.43 km (116 miles). Date and time of earthquake in UTC/GMT: 31/07/16 / 2016-07-31 19:00:14 / July 31, 2016 @ 7:00 pm. Event id: us10006a4s. Ids that are associated to the earthquake: us10006a4s. Exact location of event, depth 186.43 km, 145.1591° East, 18.7247° North. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

There are an estimated 13,000 light quakes in the world each year. In the past 24 hours, there have been thirty-four, in the last 10 days fifty-five, in the past 30 days fifty-six and in the last 365 days ninety-eight 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.

Questions or comments?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city and country. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 53 km W of Agrihan, Northern Mariana Islands. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude 145.1591° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.7247° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 186.43 km Depth of the event in kilometers.
Place 53km W 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 2016-07-31 19:00:14 Time when the event occurred. UTC/GMT
Updated 2016-08-28 19:59:43 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 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 3.516 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.5 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 174 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 us10006a4s Id of event.
Event Code 10006a4s An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10006a4s, A comma-separated list of event ids that are associated to an event.

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