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Light World Earthquakes Magnitude 4-4.9

Light earthquake 4 mag, 944 km SSW of ‘Ohonua, Tonga

Posted by admin on May 30, 2020 0 Comments

Earthquake location -28.9843S, -179.0928WA light earthquake magnitude 4 (ml/mb) has struck on Friday, 944 km SSW of ‘Ohonua, Tonga (587 miles). The 4-magnitude earthquake has occurred at 21:00:42 / 9:00 pm (local time epicenter). Id of earthquake: us6000a1td. Event ids that are associated: us6000a1td. Global time and date of event 22/05/20 / 2020-05-22 21:00:42 / May 22, 2020 @ 9:00 pm UTC/GMT. Exact location of event, depth 170.87 km, -179.0928° West, -28.9843° South. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The epicenter of the earthquake was roughly 170.87 km (106 miles) below the earth’s surface.

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 three and in the last 365 days twenty-two earthquakes of magnitude 3.0 or greater that has occurred nearby. There are an estimated 13,000 light quakes in the world each year.

Questions or comments?

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. 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: 944 km SSW of ‘Ohonua, Tonga.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -179.0928° West Decimal degrees longitude. Negative values for western longitudes.
Latitude -28.9843° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 170.87 km Depth of the event in kilometers.
Place 944 km SSW of ‘Ohonua, Tonga Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2020-05-22 21:00:42 Time when the event occurred. UTC/GMT
Updated 2020-05-30 02:49:27 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 246 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 1.051 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.97 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 113 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 us6000a1td Id of event.
Event Code 6000a1td An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us6000a1td, A comma-separated list of event ids that are associated to an event.

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