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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.1 mag has occurred near Orange Farm in South Africa

Earthquake location -26.4317S, 27.7776WA light earthquake with magnitude 4.1 (ml/mb) was reported 10 kilometers (6 miles) from Orange Farm in South Africa on Saturday. Exact time and date of earthquake 17/02/18 / 2018-02-17 05:17:00 / February 17, 2018 @ 5:17 am UTC/GMT. The temblor was reported at 07:17:00 / 7:17 am (local time epicenter). The epicenter was at a depth of 10 km (6 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location, longitude 27.7776° East, latitude -26.4317° South, depth = 10 km. Event id: us2000d8c7. Ids that are associated to the earthquake: us2000d8c7.

Nearest cities/city/villages to epicentrum/hypocenter was Brits, Pretoria, Balfour (min 5000 pop). Close country/countries, South Africa (c. 49 000 000 pop) (That might be effected). Epicenter of the earthquake was 37 km (23 miles) from Johannesburg (c. 2 026 500 pop), 20 km (12 miles) from Soweto (c. 1 695 000 pop), 87 km (54 miles) from Pretoria (c. 1 619 400 pop), 61 km (38 miles) from Benoni (c. 605 300 pop), 66 km (41 miles) from Tembisa (c. 511 700 pop), 31 km (19 miles) from Vereeniging (c. 474 700 pop).

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 one, in the past 30 days two and in the last 365 days three earthquakes of magnitude 3.0 or greater that has struck near. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

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. 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: 10 km WNW of Orange Farm, South Africa.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude 27.7776° East Decimal degrees longitude. Negative values for western longitudes.
Latitude -26.4317° South Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 10km WNW of Orange Farm, South Africa Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-02-17 05:17:00 Time when the event occurred. UTC/GMT
Updated 2018-03-08 12:48:32 Time when the event was most recently updated. UTC/GMT
Timezone offset 120 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 2.42 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.87 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 100 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 us2000d8c7 Id of event.
Event Code 2000d8c7 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000d8c7, A comma-separated list of event ids that are associated to an event.

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