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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.4 mag, 66 km ENE of Agrihan, Northern Mariana Islands

Posted by admin on October 22, 2018 0 Comments

Earthquake location 18.9104S, 146.2837WA light earthquake with magnitude 4.4 (ml/mb) was reported 66 km ENE of Agrihan, Northern Mariana Islands (41 miles) on Tuesday. Exact location of earthquake, longitude 146.2837 East, latitude 18.9104 North, depth = 92.28 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The earthquake was roughly at a depth of 92.28 km (57 miles). The temblor was detected at 00:30:40 / 12:30 am (local time epicenter). Exact time and date of earthquake 15/10/18 / 2018-10-15 14:30:40 / October 15, 2018 @ 2:30 pm UTC/GMT. Event id: us1000hef0. Ids that are associated to the earthquake: us1000hef0.

In the past 24 hours, there have been one, in the last 10 days two, in the past 30 days five and in the last 365 days seventy-eight 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?

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. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 66 km ENE of Agrihan, Northern Mariana Islands.

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More information

Parameter Value Description
Magnitude 4.4 mb The magnitude for the event.
Longitude 146.2837° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.9104° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 92.28 km Depth of the event in kilometers.
Place 66km ENE 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 2018-10-15 14:30:40 Time when the event occurred. UTC/GMT
Updated 2018-10-22 13:57:08 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 298 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 3.679 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.35 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 58 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 us1000hef0 Id of event.
Event Code 1000hef0 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000hef0, A comma-separated list of event ids that are associated to an event.

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