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Strong earthquake, 6.4 mag strikes near Anatahan in Northern Mariana Islands


Earthquake location 16.7605S, 146.8723WA earthquake magnitude 6.4 (ml/mb) strikes 136 km ENE of Anatahan, Northern Mariana Islands (85 miles) on Wednesday. The 6.4-magnitude earthquake was detected at 08:35:13 / 8:35 am (local time epicenter). A tsunami warning has been issued near Anatahan in Northern Mariana Islands (Does not indicate if a tsunami actually did or will exist). Exact location of event, longitude 146.8723 East, latitude 16.7605 North, depth = 59.9 km. Event id: us1000gj78. Ids that are associated to the earthquake: at00pe702n, pt18240001, us1000gj78. The epicenter was at a depth of 59.9 km (37 miles). Exact time and date of event in UTC/GMT: 28/08/18 / 2018-08-28 22:35:13 / August 28, 2018 @ 10:35 pm.

Earthquakes 6.0 to 6.9 may cause a lot of damage in very populated areas. In the past 24 hours, there have been one, in the last 10 days two, in the past 30 days two and in the last 365 days eleven earthquakes of magnitude 3.0 or greater that have been detected in the same area. There are an estimated 135 quakes in the world each year.

Did you feel anything?

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: 136 km ENE of Anatahan, Northern Mariana Islands.

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More information

Parameter Value Description
Magnitude 6.4 mb The magnitude for the event.
Longitude 146.8723° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 16.7605° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 59.9 km Depth of the event in kilometers.
Place 136km ENE of Anatahan, 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 2018-08-28 22:35:13 Time when the event occurred. UTC/GMT
Updated 2018-08-28 22:53:52 Time when the event was most recently updated. UTC/GMT
Timezone offset 600 Timezone offset from UTC in minutes at the event epicenter.
Felt 12 The total number of felt reports
CDI 4.9 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 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 636 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,pt,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 1.835 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.13 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 15 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 us1000gj78 Id of event.
Event Code 1000gj78 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00pe702n,pt18240001,us1000gj78, A comma-separated list of event ids that are associated to an event.

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