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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.6 mag strikes near Merizo Village in Guam


Earthquake location 12.2437S, 144.6478WA light earthquake with magnitude 4.6 (ml/mb) was detected on Sunday, 113 km S of Merizo Village, Guam (70 miles). 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 10 km (6 miles). All ids that are associated to the event: us60004x1u. Unique identifier: us60004x1u. The temblor was picked up at 10:49:27 / 10:49 am (local time epicenter). Exact time and date of earthquake 21/07/19 / 2019-07-21 00:49:27 / July 21, 2019 @ 12:49 am UTC/GMT. Exact location of earthquake, longitude 144.6478 East, latitude 12.2437 North, depth = 10 km.

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 nine, in the last 10 days twelve, in the past 30 days fourteen and in the last 365 days thirty-three earthquakes of magnitude 3.0 or greater that was reported nearby.

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 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: 113 km S of Merizo Village, Guam.

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More information

Parameter Value Description
Magnitude 4.6 mb The magnitude for the event.
Longitude 144.6478° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 12.2437° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 113km 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 2019-07-21 00:49:27 Time when the event occurred. UTC/GMT
Updated 2019-08-18 02:51:57 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 326 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 1.354 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.49 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 132 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 us60004x1u Id of event.
Event Code 60004x1u An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us60004x1u, A comma-separated list of event ids that are associated to an event.

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