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Light World Earthquakes Magnitude 4-4.9

Light earthquake: M4.4 quake has struck near Liberta in Antigua and Barbuda

Posted by admin on August 7, 2015 0 Comments

Earthquake location 16.842S, -61.9071WA light earthquake magnitude 4.4 (ml/mb) strikes 24 kilometers (15 miles) from Liberta in Antigua and Barbuda on Thursday. The epicenter was at a depth of 129 km (80 miles). Exact location, longitude -61.9071° West, latitude 16.842° North, depth = 129 km. Id of earthquake: us20002w8f. Event ids that are associated: us20002w8f. The 4.4-magnitude earthquake was detected at 02:45:50 / 2:45 am (local time epicenter). Exact time and date of earthquake 09/07/15 / 2015-07-09 06:45:50 / July 9, 2015 @ 6:45 am UTC/GMT. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Nearest cities/city/towns to hypocenter/epicentrum was Saint-François, Saint-Claude, Baillif (min 5000 pop). Epicenter of the earthquake was 77 km (48 miles) from Les Abymes (c. 63 100 pop), 73 km (45 miles) from Baie-Mahault (c. 30 600 pop), 83 km (52 miles) from Le Gosier (c. 28 700 pop), 80 km (50 miles) from Petit-Bourg (c. 25 000 pop), 31 km (19 miles) from Saint John’s (c. 24 200 pop), 89 km (55 miles) from Sainte-Anne (c. 22 900 pop). Nearby country/countries that might be effected, Antigua and Barbuda (c. 87 000 pop), Guadeloupe (c. 443 000 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 two and in the last 365 days five earthquakes of magnitude 3.0 or greater that has occurred nearby. Each year there are an estimated 13,000 light quakes in the world.

Questions or comments?

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. 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: 24 km SSW of Liberta, Antigua and Barbuda.

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More information

Parameter Value Description
Magnitude 4.4 mb The magnitude for the event.
Longitude -61.9071° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 16.842° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 129 km Depth of the event in kilometers.
Place 24km SSW of Liberta, Antigua and Barbuda Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2015-07-09 06:45:50 Time when the event occurred. UTC/GMT
Updated 2015-08-07 11:08:21 Time when the event was most recently updated. UTC/GMT
Timezone offset -240 Timezone offset from UTC in minutes at the event epicenter.
Felt 0 The total number of felt reports
CDI 1 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 298 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 0.83 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.44 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 146 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 us20002w8f Id of event.
Event Code 20002w8f An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us20002w8f, A comma-separated list of event ids that are associated to an event.

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