Light earthquake 4.5 mag, 277 km WNW of Houma, Tonga

A light earthquake magnitude 4.5 (ml/mb) has occurred on Tuesday, 277 km WNW of Houma, Tonga (172 miles). The temblor was reported at 12:14:48 / 12:14 pm (local time epicenter). Unique identifier: us7000q0b7. Ids that are associated to the event: us7000q0b7. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The epicenter was at a depth of 542.214 km (337 miles). Global time and date of event 20/05/25 / 2025-05-20 12:14:48 / May 20, 2025 @ 12:14 pm UTC/GMT. Exact location of event, depth 542.214 km, -177.8816° West, -20.5354° South.

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 two, in the last 10 days five, in the past 30 days ten and in the last 365 days one hundred and fourty-five earthquakes of magnitude 3.0 or greater that have been detected in the same area.

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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, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 277 km WNW of Houma, Tonga. This data comes from the USGS Earthquake Notification Service.

Houma Tonga

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Parameter	Value	Description
Magnitude	4.5 mb	The magnitude for the event.
Longitude	-177.8816° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	-20.5354° South	Decimal degrees latitude. Negative values for southern latitudes.
Depth	542.214 km	Depth of the event in kilometers.
Place	277 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	2025-05-20 12:14:48	Time when the event occurred. UTC/GMT
Updated	2025-05-26 05:57:23	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	34	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	4.74	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.68 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	99	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	us7000q0b7	Id of event.
Event Code	7000q0b7	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us7000q0b7,	A comma-separated list of event ids that are associated to an event.

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Light earthquake 4.5 mag, 277 km WNW of Houma, Tonga

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