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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.7 mag strikes near Merizo Village in Guam


Earthquake location 11.8815S, 144.75WA light earthquake magnitude 4.7 (ml/mb) has occurred on Thursday, 153 km S of Merizo Village, Guam (95 miles). Exact location of event, longitude 144.75 East, latitude 11.8815 North, depth = 29.32 km. The temblor was detected at 00:36:31 / 12:36 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact time and date of earthquake 04/10/17 / 2017-10-04 14:36:31 / October 4, 2017 @ 2:36 pm UTC/GMT. The epicenter of the earthquake was roughly 29.32 km (18 miles) below the earth’s surface. Unique identifier: us2000b0yh. Ids that are associated to the event: us2000b0yh.

Each year there are an estimated 13,000 light earthquakes in the world. In the past 24 hours, there have been two, in the last 10 days two, in the past 30 days two and in the last 365 days nineteen 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.

Questions or comments?

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: 153 km S of Merizo Village, Guam.

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More information

Parameter Value Description
Magnitude 4.7 mb The magnitude for the event.
Longitude 144.75° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 11.8815° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 29.32 km Depth of the event in kilometers.
Place 153km S of Merizo 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 2017-10-04 14:36:31 Time when the event occurred. UTC/GMT
Updated 2017-10-25 06:55:23 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 340 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 1.701 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.18 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 81 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 us2000b0yh Id of event.
Event Code 2000b0yh An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000b0yh, A comma-separated list of event ids that are associated to an event.

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