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Major earthquake 7.7 mag, 31 km SSW of Agrihan, Northern Mariana Islands

Posted by admin on July 29, 2016 0 Comments

Earthquake location 18.5153S, 145.5293WA major earthquake magnitude 7.7 (ml/mb) has struck on Saturday, 31 km SSW of Agrihan, Northern Mariana Islands (19 miles). Exact location, longitude 145.5293° East, latitude 18.5153° North, depth = 212.43 km. Id of earthquake: us100068jg. Event ids that are associated: at00ob3huo, us100068jg. The temblor was reported at 07:18:25 / 7:18 am (local time epicenter). A tsunami warning has been issued near Agrihan in Northern Mariana Islands (Does not indicate if a tsunami actually did or will exist). The earthquake was roughly at a depth of 212.43 km (132 miles). Exact time and date of event in UTC/GMT: 29/07/16 / 2016-07-29 21:18:25 / July 29, 2016 @ 9:18 pm.

In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days three and in the last 365 days fifty-five earthquakes of magnitude 3.0 or greater that have been detected in the same area. Every year there are an estimated 15 major earthquakes in the world. Earthquakes 7.0 to 7.9 may cause serious damage.

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. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 31 km SSW of Agrihan, Northern Mariana Islands.

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More information

Parameter Value Description
Magnitude 7.7 mb The magnitude for the event.
Longitude 145.5293° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.5153° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 212.43 km Depth of the event in kilometers.
Place 31km 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 2016-07-29 21:18:25 Time when the event occurred. UTC/GMT
Updated 2016-07-29 21:39:10 Time when the event was most recently updated. UTC/GMT
Timezone offset 600 Timezone offset from UTC in minutes at the event epicenter.
Felt 21 The total number of felt reports
CDI 4.3 The maximum reported intensity for the event.
MMI 5.99 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 1 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 921 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 ,at,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 3.265 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.33 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 14 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mww The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us100068jg Id of event.
Event Code 100068jg An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00ob3huo,us100068jg, A comma-separated list of event ids that are associated to an event.

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