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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4 mag, 276 km WNW of Houma, Tonga


Earthquake location -19.9523S, -177.6193WA light earthquake magnitude 4 (ml/mb) has struck on Saturday, 276 km WNW of Houma, Tonga (171 miles). The earthquake occurred at a depth of 365.22 km (227 miles) below the earth’s surface. Exact location of event, longitude -177.6193 West, latitude -19.9523 South, depth = 365.22 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Id of earthquake: us6000mu0x. Event ids that are associated: us6000mu0x. Exact time and date of earthquake 20/04/24 / 2024-04-20 16:55:30 / April 20, 2024 @ 4:55 pm UTC/GMT. The temblor was reported at 16:55:30 / 4:55 pm (local time epicenter).

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 nine earthquakes of magnitude 3.0 or greater that was reported nearby. 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.

How would you describe the shaking?

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, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 276 km WNW of Houma, Tonga. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -177.6193° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -19.9523° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 365.22 km Depth of the event in kilometers.
Place 276 km WNW of Houma, Tonga Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2024-04-20 16:55:30 Time when the event occurred. UTC/GMT
Updated 2024-05-15 21:45:41 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 246 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 25 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 2.567 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.61 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 83 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 us6000mu0x Id of event.
Event Code 6000mu0x An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000mu0x, A comma-separated list of event ids that are associated to an event.

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