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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.5 mag was detected near Pangai in Tonga

Earthquake location -19.8161S, -174.0044WA light earthquake magnitude 4.5 (ml/mb) strikes 36 kilometers (22 miles) from Pangai in Tonga on Thursday. Exact location of earthquake, -174.0044° West, -19.8161° South, depth 14.44 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The earthquake was roughly at a depth of 14.44 km (9 miles). Unique identifier: us10008vb9. Ids that are associated to the event: us10008vb9. The temblor was detected at 12:27:34 / 12:27 pm (local time epicenter). Date and time of earthquake in UTC/GMT: 19/05/17 / 2017-05-19 00:27:34 / May 19, 2017 @ 12:27 am.

Country/countries that might be effected, Tonga (c. 123 000 pop). Event epicenter was 37 km (23 miles) from Pangai (c. 1 700 pop). Closest city/cities/towns to epicentrum/hypocenter was Pangai (min 5000 pop).

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 one, in the last 10 days three, in the past 30 days seven and in the last 365 days twenty-eight earthquakes of magnitude 3.0 or greater that has occurred nearby.

Did you feel the quake?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 36 km E of Pangai, Tonga.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude -174.0044° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -19.8161° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 14.44 km Depth of the event in kilometers.
Place 36km E of Pangai, Tonga Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-05-19 00:27:34 Time when the event occurred. UTC/GMT
Updated 2017-06-03 22:03:57 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 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 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 3.917 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.85 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 123 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 us10008vb9 Id of event.
Event Code 10008vb9 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10008vb9, A comma-separated list of event ids that are associated to an event.

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