Light earthquake, 4.4 mag strikes near Southwest Indian Ridge

A light earthquake magnitude 4.4 (ml/mb) has struck on Monday, Southwest Indian Ridge (0 miles). The earthquake occurred at a depth of 9.96 km (6 miles) below the earth’s surface. The temblor was reported at 21:32:21 / 9:32 pm (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Event ids that are associated to the earthquake: us2000itmf. Id of event: us2000itmf. Exact location of earthquake, longitude 43.5025 East, latitude -40.7882 South, depth = 9.96 km. Global date and time of event UTC/GMT: 10/12/18 / 2018-12-10 18:32:21 / December 10, 2018 @ 6:32 pm.

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

Questions or comments?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city 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: Southwest Indian Ridge.

Southwest Indian Ridge

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Parameter	Value	Description
Magnitude	4.4 mb	The magnitude for the event.
Longitude	43.5025° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	-40.7882° South	Decimal degrees latitude. Negative values for southern latitudes.
Depth	9.96 km	Depth of the event in kilometers.
Place	Southwest Indian Ridge	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2018-12-10 18:32:21	Time when the event occurred. UTC/GMT
Updated	2019-01-08 20:26:08	Time when the event was most recently updated. UTC/GMT
Timezone offset	180	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	16.465	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.76 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	86	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	us2000itmf	Id of event.
Event Code	2000itmf	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us2000itmf,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4.4 mag strikes near Southwest Indian Ridge

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