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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4 mag was detected near Agrihan in Northern Mariana Islands

Posted by admin on October 19, 2018 0 Comments

Earthquake location 18.6855S, 145.3105WA light earthquake magnitude 4 (ml/mb) has struck on Sunday, 38 km WSW of Agrihan, Northern Mariana Islands (24 miles). The temblor was picked up at 16:14:35 / 4:14 pm (local time epicenter). Exact location of earthquake, longitude 145.3105 East, latitude 18.6855 North, depth = 171.59 km. Global date and time of event UTC/GMT: 23/09/18 / 2018-09-23 06:14:35 / September 23, 2018 @ 6:14 am. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The earthquake occurred at a depth of 171.59 km (107 miles) below the earth’s surface. All ids that are associated to the event: us1000h3tl. Unique identifier: us1000h3tl.

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

How would you describe the shaking?

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. 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: 38 km WSW of Agrihan, Northern Mariana Islands.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude 145.3105° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.6855° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 171.59 km Depth of the event in kilometers.
Place 38km 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 2018-09-23 06:14:35 Time when the event occurred. UTC/GMT
Updated 2018-10-19 08:14:34 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 246 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 3.456 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.53 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 120 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 us1000h3tl Id of event.
Event Code 1000h3tl An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000h3tl, A comma-separated list of event ids that are associated to an event.

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