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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.2 mag has occurred near Houma in Tonga


Earthquake location -19.8949S, -177.7349WA light earthquake with magnitude 4.2 (ml/mb) was reported 290 km WNW of Houma, Tonga (180 miles) on Thursday. The epicenter of the earthquake was roughly 482.772 km (300 miles) below the earth’s surface. Exact location of earthquake, -177.7349° West, -19.8949° South, depth 482.772 km. The 4.2-magnitude earthquake has occurred at 21:20:41 / 9:20 pm (local time epicenter). Id of earthquake: us7000n7yj. Event ids that are associated: us7000n7yj. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Global time and date of event 01/08/24 / 2024-08-01 21:20:41 / August 1, 2024 @ 9:20 pm UTC/GMT.

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

Did you feel anything?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity 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: 290 km WNW of Houma, Tonga. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.2 mb The magnitude for the event.
Longitude -177.7349° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -19.8949° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 482.772 km Depth of the event in kilometers.
Place 290 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 2024-08-01 21:20:41 Time when the event occurred. UTC/GMT
Updated 2024-08-20 00:43:02 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 271 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 2.69 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.76 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 73 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 us7000n7yj Id of event.
Event Code 7000n7yj An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us7000n7yj, A comma-separated list of event ids that are associated to an event.

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