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Light earthquake: M4.4 quake has struck near Houma in Tonga

Posted by admin on April 20, 2025 0 Comments

Earthquake location -19.2724S, -176.9597WA light earthquake with magnitude 4.4 (ml/mb) was detected on Sunday, 272 km NW of Houma, Tonga (169 miles). The 4.4-magnitude earthquake was detected at 13:03:19 / 1:03 pm (local time epicenter). Unique identifier: us6000q7dy. Ids that are associated to the event: us6000q7dy. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of event, longitude -176.9597 West, latitude -19.2724 South, depth = 386.052 km. Exact time and date of earthquake 20/04/25 / 2025-04-20 13:03:19 / April 20, 2025 @ 1:03 pm UTC/GMT. The earthquake occurred at a depth of 386.052 km (240 miles).

In the past 24 hours, there have been one, in the last 10 days three, in the past 30 days six and in the last 365 days eighty-six earthquakes of magnitude 3.0 or greater that was reported nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. There are an estimated 13,000 light quakes in the world each year.

Questions or comments?

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, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 272 km NW of Houma, Tonga. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.4 mb The magnitude for the event.
Longitude -176.9597° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -19.2724° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 386.052 km Depth of the event in kilometers.
Place 272 km NW 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 2025-04-20 13:03:19 Time when the event occurred. UTC/GMT
Updated 2025-04-20 14:18:13 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 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 26 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 4.465 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.58 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 104 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 us6000q7dy Id of event.
Event Code 6000q7dy An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000q7dy, A comma-separated list of event ids that are associated to an event.

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