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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.5 mag was detected near Agrihan in Northern Mariana Islands

Posted by admin on September 30, 2018 0 Comments

Earthquake location 18.5664S, 145.8614WA light earthquake magnitude 4.5 (ml/mb) strikes 30 km SE of Agrihan, Northern Mariana Islands (19 miles) on Saturday. Exact time and date of earthquake 01/09/18 / 2018-09-01 07:11:51 / September 1, 2018 @ 7:11 am UTC/GMT. The 4.5-magnitude earthquake was detected at 17:11:51 / 5:11 pm (local time epicenter). Id of earthquake: us2000hag2. Event ids that are associated: us2000hag2. The earthquake was roughly at a depth of 182.73 km (114 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location, longitude 145.8614° East, latitude 18.5664° North, depth = 182.73 km.

In the past 24 hours, there have been four, in the last 10 days five, in the past 30 days eight and in the last 365 days eighty-nine 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. Each year there are an estimated 13,000 light earthquakes in the world.

Did you feel the quake?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home 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: 30 km SE of Agrihan, Northern Mariana Islands.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude 145.8614° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 18.5664° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 182.73 km Depth of the event in kilometers.
Place 30km SE 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 2018-09-01 07:11:51 Time when the event occurred. UTC/GMT
Updated 2018-09-30 06:48:46 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 312 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 3.307 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.67 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 130 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 us2000hag2 Id of event.
Event Code 2000hag2 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000hag2, A comma-separated list of event ids that are associated to an event.

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