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Earthquake breaking news, Light World Earthquakes Magnitude 4-4.9

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


Earthquake location -21.0985S, -175.6169WA light earthquake with magnitude 4.5 (ml/mb) was reported 33 kilometers (21 miles) from Houma in Tonga on Saturday. Global time and date of event 19/07/25 / 2025-07-19 06:20:18 / July 19, 2025 @ 6:20 am UTC/GMT. All ids that are associated to the event: us7000qds0. Unique identifier: us7000qds0. Exact location of event, longitude -175.6169 West, latitude -21.0985 South, depth = 136.764 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The earthquake occurred at a depth of 136.764 km (85 miles) below the earth’s surface. The temblor was picked up at 06:20:18 / 6:20 am (local time epicenter).

Nearest cities/city/towns to hypocenter/epicentrum was ‘Ohonua, Nuku‘alofa (min 5000 pop). Close country/countries that might be effected, Tonga (c. 123 000 pop). The epicenter was 43 km (27 miles) from Nuku‘alofa (c. 22 400 pop), 74 km (46 miles) from ‘Ohonua (c. 1 200 pop).

In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days one and in the last 365 days twenty-one earthquakes of magnitude 3.0 or greater that has occurred nearby. There are an estimated 13,000 light earthquakes in the world each year. 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. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 33 km WNW of Houma, Tonga. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude -175.6169° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -21.0985° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 136.764 km Depth of the event in kilometers.
Place 33 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 2025-07-19 06:20:18 Time when the event occurred. UTC/GMT
Updated 2025-07-19 07:25:21 Time when the event was most recently updated. UTC/GMT
Timezone offset Timezone offset from UTC in minutes at the event epicenter.
Felt 3 The total number of felt reports
CDI 3.6 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 313 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 33 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 6.608 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.02 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 115 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 us7000qds0 Id of event.
Event Code 7000qds0 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000qds0, A comma-separated list of event ids that are associated to an event.

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