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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4.7 quake has struck near Ascension Island

Posted by admin on May 13, 2025 0 Comments

Earthquake location -1.3357S, -15.9345WA light earthquake with magnitude 4.7 (ml/mb) was detected on Monday, north of Ascension Island (0 miles). The epicenter of the earthquake was roughly 10 km (6 miles) below the earth’s surface. Unique identifier: us7000pxri. Ids that are associated to the event: us7000pxri. Exact location of event, longitude -15.9345 West, latitude -1.3357 South, depth = 10 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The temblor was picked up at 11:42:04 / 11:42 am (local time epicenter). Global date and time of event UTC/GMT: 21/04/25 / 2025-04-21 11:42:04 / April 21, 2025 @ 11:42 am.

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

How would you describe the shaking?

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: north of Ascension Island.

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More information

Parameter Value Description
Magnitude 4.7 mb The magnitude for the event.
Longitude -15.9345° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -1.3357° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place north of Ascension Island Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-04-21 11:42:04 Time when the event occurred. UTC/GMT
Updated 2025-05-13 09:47:05 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 340 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 31 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 13.619 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 62 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 us7000pxri Id of event.
Event Code 7000pxri An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000pxri, A comma-separated list of event ids that are associated to an event.

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