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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.2 mag, 4 km SW of Agrihan, Northern Mariana Islands

Posted by admin on September 11, 2016 0 Comments

Earthquake location 18.7349S, 145.6394WA light earthquake magnitude 4.2 (ml/mb) has struck on Monday, 4 km SW of Agrihan, Northern Mariana Islands (2 miles). Global time and date of event 21/08/16 / 2016-08-21 20:07:19 / August 21, 2016 @ 8:07 pm UTC/GMT. The 4.2-magnitude earthquake has occurred at 06:07:19 / 6:07 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Event ids that are associated to the earthquake: us20006tx5. Id of event: us20006tx5. Exact location of event, depth 202.8 km, 145.6394° East, 18.7349° North. The earthquake occurred at a depth of 202.8 km (126 miles) below the earth’s surface.

In the past 24 hours, there have been four, in the last 10 days twelve, in the past 30 days sixty-three and in the last 365 days one hundred and thirteen earthquakes of magnitude 3.0 or greater that have been detected nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. Each year there are an estimated 13,000 light quakes in the world.

Questions or comments?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity 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: 4 km SW of Agrihan, Northern Mariana Islands. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude 145.6394° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.7349° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 202.8 km Depth of the event in kilometers.
Place 4km SW 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 2016-08-21 20:07:19 Time when the event occurred. UTC/GMT
Updated 2016-09-11 18:58:39 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 271 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 3.477 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.6 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 164 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 us20006tx5 Id of event.
Event Code 20006tx5 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us20006tx5, A comma-separated list of event ids that are associated to an event.

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