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Light earthquake: M4.8 quake has struck near Nuku`alofa in Tonga

Posted by admin on May 1, 2019 0 Comments

Earthquake location -20.1993S, -175.8154WA light earthquake magnitude 4.8 (ml/mb) has occurred on Tuesday, 121 km NNW of Nuku`alofa, Tonga (75 miles). The epicenter of the earthquake was roughly 196.96 km (122 miles) below the earth’s surface. Exact location of event, longitude -175.8154 West, latitude -20.1993 South, depth = 196.96 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). All ids that are associated to the event: us70003ez0. Unique identifier: us70003ez0. The 4.8-magnitude earthquake was detected at 12:41:22 / 12:41 pm (local time epicenter). Global date and time of event UTC/GMT: 01/05/19 / 2019-05-01 00:41:22 / May 1, 2019 @ 12:41 am.

In the past 24 hours, there have been one, in the last 10 days two, in the past 30 days three and in the last 365 days twenty-seven earthquakes of magnitude 3.0 or greater that has occurred nearby. 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.

How would you describe the shaking?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 121 km NNW of Nuku`alofa, Tonga.

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More information

Parameter Value Description
Magnitude 4.8 mb The magnitude for the event.
Longitude -175.8154° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -20.1993° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 196.96 km Depth of the event in kilometers.
Place 121km NNW of Nuku`alofa, Tonga Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2019-05-01 00:41:22 Time when the event occurred. UTC/GMT
Updated 2019-05-01 00:58:26 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 354 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 5.66 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.34 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 41 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 us70003ez0 Id of event.
Event Code 70003ez0 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us70003ez0, A comma-separated list of event ids that are associated to an event.

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