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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.1 mag was detected near Marechal Thaumaturgo in Brazil

Posted by admin on August 28, 2025 0 Comments

Earthquake location -9.3869S, -71.6812WA light earthquake with magnitude 4.1 (ml/mb) was detected on Sunday, 131 km ESE of Marechal Thaumaturgo, Brazil (81 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Unique identifier: us7000qr46. Ids that are associated to the event: us7000qr46. Global date and time of event UTC/GMT: 03/08/25 / 2025-08-03 14:11:03 / August 3, 2025 @ 2:11 pm. Exact location of event, longitude -71.6812 West, latitude -9.3869 South, depth = 314.66 km. The temblor was reported at 14:11:03 / 2:11 pm (local time epicenter). The earthquake occurred at a depth of 314.66 km (196 miles).

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 two earthquakes of magnitude 3.0 or greater that has struck near. Every year there are an estimated 13,000 light earthquakes in the world. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Questions or comments?

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 information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 131 km ESE of Marechal Thaumaturgo, Brazil.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude -71.6812° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -9.3869° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 314.66 km Depth of the event in kilometers.
Place 131 km ESE of Marechal Thaumaturgo, Brazil Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-08-03 14:11:03 Time when the event occurred. UTC/GMT
Updated 2025-08-28 16:24:47 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 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 16 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 1.933 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.57 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 148 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 us7000qr46 Id of event.
Event Code 7000qr46 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000qr46, A comma-separated list of event ids that are associated to an event.

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