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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.5 mag has occurred near Inarajan Village in Guam


Earthquake location 12.534S, 144.8251WA light earthquake magnitude 4.5 (ml/mb) has occurred on Tuesday, 82 kilometers (51 miles) from Inarajan Village in Guam. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact time and date of event in UTC/GMT: 23/10/17 / 2017-10-23 22:00:44 / October 23, 2017 @ 10:00 pm. All ids that are associated to the event: us1000az6e. Unique identifier: us1000az6e. Exact location, longitude 144.8251° East, latitude 12.534° North, depth = 12.85 km. The epicenter of the earthquake was roughly 12.85 km (8 miles) below the earth’s surface. The temblor was picked up at 08:00:44 / 8:00 am (local time epicenter).

Epicenter of the event was 96 km (60 miles) from Santa Rita Village (c. 7 500 pop), 92 km (57 miles) from Talofofo Village (c. 3 200 pop), 83 km (51 miles) from Inarajan Village (c. 3 100 pop), 83 km (52 miles) from Merizo Village (c. 2 200 pop), 87 km (54 miles) from Umatac Village (c. 900 pop). Nearest cities/city/villages to epicentrum/hypocenter was Santa Rita Village, Talofofo Village, Umatac Village (min 5000 pop). Nearby country/countries, Guam (c. 159 000 pop) (That might be effected).

In the past 24 hours, there have been two, in the last 10 days three, in the past 30 days four and in the last 365 days thirty-one earthquakes of magnitude 3.0 or greater that have been detected in the same area. Every year there are an estimated 13,000 light earthquakes in the world. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

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. 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: 82 km S of Inarajan Village, Guam.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude 144.8251° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 12.534° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 12.85 km Depth of the event in kilometers.
Place 82km S of Inarajan Village, Guam Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-10-23 22:00:44 Time when the event occurred. UTC/GMT
Updated 2017-11-02 02:54:13 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 1.049 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.62 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 86 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 us1000az6e Id of event.
Event Code 1000az6e An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000az6e, A comma-separated list of event ids that are associated to an event.

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