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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.9 mag strikes near Merizo Village in Guam

Earthquake location 12.7624S, 143.9645WA light earthquake with magnitude 4.9 (ml/mb) was detected on Tuesday, 94 kilometers (58 miles) from Merizo Village in Guam. Unique identifier: us6000c17f. Ids that are associated to the event: us6000c17f. The epicenter was at a depth of 10 km (6 miles). Exact location of event, longitude 143.9645 East, latitude 12.7624 North, depth = 10 km. The temblor was picked up at 00:21:53 / 12:21 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 22/09/20 / 2020-09-22 00:21:53 / September 22, 2020 @ 12:21 am UTC/GMT.

Close country/countries that might be effected, Guam (c. 159 000 pop). The epicenter was 102 km (64 miles) from Agat Village (c. 5 700 pop), 102 km (64 miles) from Inarajan Village (c. 3 100 pop), 95 km (59 miles) from Merizo Village (c. 2 200 pop), 96 km (60 miles) from Umatac Village (c. 900 pop). Nearest cities/city/villages to epicentrum/hypocenter was Agat Village, Inarajan Village, Umatac Village (min 5000 pop).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days three and in the last 365 days fourty-one earthquakes of magnitude 3.0 or greater that was reported nearby. Each year there are an estimated 13,000 light quakes 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. 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: 94 km SW of Merizo Village, Guam.

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More information

Parameter Value Description
Magnitude 4.9 mb The magnitude for the event.
Longitude 143.9645° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 12.7624° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 94 km SW 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 2020-09-22 00:21:53 Time when the event occurred. UTC/GMT
Updated 2020-09-25 21:14:01 Time when the event was most recently updated. UTC/GMT
Timezone offset 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 369 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 1.204 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.01 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 75 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 us6000c17f Id of event.
Event Code 6000c17f An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000c17f, A comma-separated list of event ids that are associated to an event.

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