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Moderate World Earthquakes Magnitude 5–5.9

Moderate earthquake, 5.4 mag has occurred near Houma in Tonga


Earthquake location -21.2737S, -177.8682WA moderate earthquake with magnitude 5.4 (ml/mb) was detected on Wednesday, 266 km W of Houma, Tonga (165 miles). The temblor was reported at 21:31:47 / 9:31 pm (local time epicenter). Exact time and date of event in UTC/GMT: 17/04/24 / 2024-04-17 21:31:47 / April 17, 2024 @ 9:31 pm. Exact location, longitude -177.8682° West, latitude -21.2737° South, depth = 387.775 km. The epicenter was at a depth of 387.775 km (241 miles). All ids that are associated to the event: us7000mcru. Unique identifier: us7000mcru. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

There are an estimated 1320 moderate earthquakes in the world each year. Earthquakes 5.0 to 6.0 may cause light damage to buildings and other structures. In the past 24 hours, there have been five, in the last 10 days five, in the past 30 days five and in the last 365 days five earthquakes of magnitude 3.0 or greater that was reported nearby.

Did you feel anything?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage at your home, city and country. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 266 km W of Houma, Tonga. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 5.4 mb The magnitude for the event.
Longitude -177.8682° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -21.2737° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 387.775 km Depth of the event in kilometers.
Place 266 km W 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 2024-04-17 21:31:47 Time when the event occurred. UTC/GMT
Updated 2024-05-13 22:45:10 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 0 The maximum estimated instrumental intensity for the event.
Alert Level green 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 449 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 273 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 2.488 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.78 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 19 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mww The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us7000mcru Id of event.
Event Code 7000mcru An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000mcru, A comma-separated list of event ids that are associated to an event.

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