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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4.4 quake has struck near Agrihan in Northern Mariana Islands

Posted by admin on December 20, 2017 0 Comments

Earthquake location 18.6253S, 145.543WA light earthquake with magnitude 4.4 (ml/mb) was reported 20 km SW of Agrihan, Northern Mariana Islands (12 miles) on Wednesday. All ids that are associated to the event: us1000bjge. Unique identifier: us1000bjge. Global date and time of event UTC/GMT: 22/11/17 / 2017-11-22 12:53:02 / November 22, 2017 @ 12:53 pm. 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 216.57 km (135 miles). The temblor was detected at 22:53:02 / 10:53 pm (local time epicenter). Exact location of earthquake, longitude 145.543 East, latitude 18.6253 North, depth = 216.57 km.

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. In the past 24 hours, there have been three, in the last 10 days four, in the past 30 days nine and in the last 365 days seventy-six earthquakes of magnitude 3.0 or greater that have been detected nearby.

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. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 20 km SW of Agrihan, Northern Mariana Islands.

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More information

Parameter Value Description
Magnitude 4.4 mb The magnitude for the event.
Longitude 145.543° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.6253° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 216.57 km Depth of the event in kilometers.
Place 20km 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 2017-11-22 12:53:02 Time when the event occurred. UTC/GMT
Updated 2017-12-20 14:01:32 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 3.373 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.76 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 90 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 us1000bjge Id of event.
Event Code 1000bjge An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000bjge, A comma-separated list of event ids that are associated to an event.

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