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Earthquake breaking news, Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4.5 quake has struck near Hihifo in Tonga


Earthquake location -15.4685S, -173.1876WA light earthquake magnitude 4.5 (ml/mb) has occurred on Saturday, 80 kilometers (50 miles) from Hihifo in Tonga. The 4.5-magnitude earthquake was detected at 13:56:26 / 1:56 pm (local time epicenter). The earthquake occurred at a depth of 10 km (6 miles) below the earth’s surface. Exact location, longitude -173.1876° West, latitude -15.4685° South, depth = 10 km. All ids that are associated to the event: us2000a2lr. Unique identifier: us2000a2lr. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Global date and time of event UTC/GMT: 30/07/17 / 2017-07-30 01:56:26 / July 30, 2017 @ 1:56 am.

Close country/countries, Tonga (c. 123 000 pop) (That might be effected). The epicenter was 85 km (53 miles) from Hihifo (c. 800 pop). Nearest cities/city/towns to hypocenter/epicentrum was Hihifo (min 5000 pop).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days four and in the last 365 days fourty-nine earthquakes of magnitude 3.0 or greater that has occurred nearby. Each year there are an estimated 13,000 light earthquakes in the world.

Did you feel the quake?

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, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 80 km NE of Hihifo, Tonga. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude -173.1876° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -15.4685° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 80km NE 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 2017-07-30 01:56:26 Time when the event occurred. UTC/GMT
Updated 2017-07-30 02:20:25 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 2.065 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.81 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 111 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 us2000a2lr Id of event.
Event Code 2000a2lr An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000a2lr, A comma-separated list of event ids that are associated to an event.

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