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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.4 mag was detected near Dededo Village in Guam


Earthquake location 13.6741S, 144.7706WA light earthquake magnitude 4.4 (ml/mb) strikes 18 kilometers (11 miles) from Dededo Village in Guam on Sunday. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of earthquake, longitude 144.7706 East, latitude 13.6741 North, depth = 126.19 km. Event ids that are associated to the earthquake: us2000b21n. Id of event: us2000b21n. The earthquake was roughly at a depth of 126.19 km (78 miles). Global time and date of event 30/09/17 / 2017-09-30 21:22:02 / September 30, 2017 @ 9:22 pm UTC/GMT. The 4.4-magnitude earthquake was detected at 07:22:02 / 7:22 am (local time epicenter).

Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Merizo Village, Inarajan Village, Umatac Village. Close country/countries, Guam (c. 159 000 pop) (That might be effected). The epicenter was 19 km (12 miles) from Dededo Village (c. 44 900 pop), 20 km (12 miles) from Yigo Village (c. 20 500 pop), 21 km (13 miles) from Tamuning-Tumon-Harmon Village (c. 19 700 pop), 25 km (16 miles) from Mangilao Village (c. 15 200 pop), 23 km (14 miles) from Barrigada Village (c. 8 900 pop), 34 km (21 miles) from Santa Rita Village (c. 7 500 pop).

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

Questions or comments?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 18 km NNW of Dededo Village, Guam. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.4 mb The magnitude for the event.
Longitude 144.7706° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 13.6741° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 126.19 km Depth of the event in kilometers.
Place 18km NNW of Dededo 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 2017-09-30 21:22:02 Time when the event occurred. UTC/GMT
Updated 2017-10-29 00:48:10 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 298 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 0.127 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.68 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 119 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 us2000b21n Id of event.
Event Code 2000b21n An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000b21n, A comma-separated list of event ids that are associated to an event.

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