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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4.1 quake has struck near Merizo Village in Guam

Earthquake location 12.9656S, 143.3065WA light earthquake with magnitude 4.1 (ml/mb) was detected on Tuesday, 151 km WSW of Merizo Village, Guam (94 miles). Unique identifier: us2000a4h5. Ids that are associated to the event: us2000a4h5. The 4.1-magnitude earthquake has occurred at 06:33:13 / 6:33 am (local time epicenter). Global time and date of event 31/07/17 / 2017-07-31 20:33:13 / July 31, 2017 @ 8:33 pm UTC/GMT. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The epicenter of the earthquake was roughly 200.33 km (124 miles) below the earth’s surface. Exact location, longitude 143.3065° East, latitude 12.9656° North, depth = 200.33 km.

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 one and in the last 365 days eleven earthquakes of magnitude 3.0 or greater that was reported nearby. There are an estimated 13,000 light earthquakes in the world each year.

Did you feel it?

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. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 151 km WSW of Merizo Village, Guam. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude 143.3065° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 12.9656° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 200.33 km Depth of the event in kilometers.
Place 151km WSW 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 2017-07-31 20:33:13 Time when the event occurred. UTC/GMT
Updated 2017-08-30 20:20:20 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 259 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 1.642 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.54 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 105 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 us2000a4h5 Id of event.
Event Code 2000a4h5 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000a4h5, A comma-separated list of event ids that are associated to an event.

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