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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 July 14, 2018 0 Comments

Earthquake location 18.6759S, 145.4703WA light earthquake magnitude 4 (ml/mb) has struck on Monday, 23 km WSW of Agrihan, Northern Mariana Islands (14 miles). Id of earthquake: us1000eyfc. Event ids that are associated: us1000eyfc. Exact location of earthquake, 145.4703° East, 18.6759° North, depth 276.51 km. Date and time of earthquake in UTC/GMT: 17/06/18 / 2018-06-17 18:12:46 / June 17, 2018 @ 6:12 pm. 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 276.51 km (172 miles) below the earth’s surface. The 4-magnitude earthquake has occurred at 04:12:46 / 4:12 am (local time epicenter).

In the past 24 hours, there have been four, in the last 10 days five, in the past 30 days ten and in the last 365 days seventy-two earthquakes of magnitude 3.0 or greater that has struck near. 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.

Questions or comments?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. 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: 23 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 145.4703° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.6759° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 276.51 km Depth of the event in kilometers.
Place 23km 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 2018-06-17 18:12:46 Time when the event occurred. UTC/GMT
Updated 2018-07-14 19:10:24 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 19.557 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.05 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 123 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 us1000eyfc Id of event.
Event Code 1000eyfc An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000eyfc, A comma-separated list of event ids that are associated to an event.

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