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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.4 mag strikes near Agrihan in Northern Mariana Islands

Posted by admin on December 27, 2017 0 Comments

Earthquake location 18.6977S, 145.3471WA light earthquake magnitude 4.4 (ml/mb) has struck on Tuesday, 34 km WSW of Agrihan, Northern Mariana Islands (21 miles). The earthquake occurred at a depth of 181.25 km (113 miles) below the earth’s surface. Exact location of earthquake, 145.3471° East, 18.6977° North, depth 181.25 km. The 4.4-magnitude earthquake was detected at 00:47:20 / 12:47 am (local time epicenter). Exact time and date of event in UTC/GMT: 25/12/17 / 2017-12-25 14:47:20 / December 25, 2017 @ 2:47 pm. Event id: us1000bw21. Ids that are associated to the earthquake: us1000bw21. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

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 sixty-four 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. Every year there are an estimated 13,000 light earthquakes in the world.

Did you feel the quake?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage at your home, city and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 34 km WSW of Agrihan, Northern Mariana Islands. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.4 mb The magnitude for the event.
Longitude 145.3471° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.6977° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 181.25 km Depth of the event in kilometers.
Place 34km WSW 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 2017-12-25 14:47:20 Time when the event occurred. UTC/GMT
Updated 2017-12-27 15:03:41 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 3.463 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 108 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 us1000bw21 Id of event.
Event Code 1000bw21 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000bw21, A comma-separated list of event ids that are associated to an event.

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