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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.1 mag strikes near Hihifo in Tonga


Earthquake location -15.3607S, -174.0108WA light earthquake with magnitude 4.1 (ml/mb) was detected on Tuesday, 70 kilometers (43 miles) from Hihifo in Tonga. Date and time of earthquake in UTC/GMT: 11/09/19 / 2019-09-11 01:34:48 / September 11, 2019 @ 1:34 am. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of event, longitude -174.0108 West, latitude -15.3607 South, depth = 55.43 km. Unique identifier: us60005l09. Ids that are associated to the event: us60005l09. The earthquake occurred at a depth of 55.43 km (34 miles). The 4.1-magnitude earthquake has occurred at 13:34:48 / 1:34 pm (local time epicenter).

Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Hihifo. Epicenter of the event was 70 km (43 miles) from Hihifo (c. 800 pop). Close country/countries, Tonga (c. 123 000 pop) (That might be effected).

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

Did you feel the quake?

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. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 70 km NNW of Hihifo, Tonga.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude -174.0108° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -15.3607° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 55.43 km Depth of the event in kilometers.
Place 70km NNW of Hihifo, Tonga Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2019-09-11 01:34:48 Time when the event occurred. UTC/GMT
Updated 2019-09-19 23:24:31 Time when the event was most recently updated. UTC/GMT
Timezone offset -720 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 259 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 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 2.599 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.71 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 160 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 us60005l09 Id of event.
Event Code 60005l09 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us60005l09, A comma-separated list of event ids that are associated to an event.

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