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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.6 mag strikes near Koubia in Guinea

Earthquake location 11.8009S, -11.9556WA light earthquake magnitude 4.6 (ml/mb) strikes 24 kilometers (15 miles) from Koubia in Guinea on Monday. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The 4.6-magnitude earthquake was detected at 16:02:33 / 4:02 pm (local time epicenter). Id of earthquake: us2000d9nh. Event ids that are associated: us2000d9nh. Date and time of earthquake in UTC/GMT: 19/02/18 / 2018-02-19 16:02:33 / February 19, 2018 @ 4:02 pm. Exact location of event, longitude -11.9556 West, latitude 11.8009 North, depth = 13.66 km. The epicenter of the earthquake was roughly 13.66 km (8 miles) below the earth’s surface.

Epicenter of the earthquake was 64 km (40 miles) from Labé (c. 58 600 pop), 49 km (30 miles) from Tougué (c. 25 500 pop), 93 km (58 miles) from Pita (c. 20 100 pop), 87 km (54 miles) from Kédougou (c. 17 900 pop), 25 km (15 miles) from Koubia (c. 9 900 pop), 48 km (30 miles) from Mali (c. 5 500 pop). Close country/countries that might be effected, Guinea (c. 10 324 000 pop), Senegal (c. 12 323 000 pop). Closest city/cities/towns to epicentrum/hypocenter was Pita, Kédougou, Labé (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 one and in the last 365 days one earthquakes of magnitude 3.0 or greater that have been detected nearby. There are an estimated 13,000 light earthquakes in the world each year.

Did you feel anything?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage at your home, city 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: 24 km NNW of Koubia, Guinea.

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More information

Parameter Value Description
Magnitude 4.6 mb The magnitude for the event.
Longitude -11.9556° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 11.8009° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 13.66 km Depth of the event in kilometers.
Place 24km NNW of Koubia, Guinea Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-02-19 16:02:33 Time when the event occurred. UTC/GMT
Updated 2018-03-05 16:40:13 Time when the event was most recently updated. UTC/GMT
Timezone offset 0 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 326 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 5.286 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.83 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 109 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 us2000d9nh Id of event.
Event Code 2000d9nh An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000d9nh, A comma-separated list of event ids that are associated to an event.

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