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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4.5 quake has struck near Neiafu in Tonga

Posted by admin on April 20, 2025 0 Comments

Earthquake location -17.74S, -174.2782WA light earthquake magnitude 4.5 (ml/mb) strikes 105 km NNW of Neiafu, Tonga (65 miles) on Saturday. Unique identifier: us6000q4am. Ids that are associated to the event: us6000q4am. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The earthquake was roughly at a depth of 148.908 km (93 miles). The 4.5-magnitude earthquake has occurred at 19:49:45 / 7:49 pm (local time epicenter). Global date and time of event UTC/GMT: 05/04/25 / 2025-04-05 19:49:45 / April 5, 2025 @ 7:49 pm. Exact location, longitude -174.2782° West, latitude -17.74° South, depth = 148.908 km.

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

How would you describe the shaking?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 105 km NNW of Neiafu, Tonga. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude -174.2782° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -17.74° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 148.908 km Depth of the event in kilometers.
Place 105 km NNW of Neiafu, Tonga Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-04-05 19:49:45 Time when the event occurred. UTC/GMT
Updated 2025-04-20 00:21:22 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 312 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 23 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 4.339 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.97 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 71 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 us6000q4am Id of event.
Event Code 6000q4am An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000q4am, A comma-separated list of event ids that are associated to an event.

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