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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4 mag has occurred near Andreanof Islands, Aleutian Islands, Alaska

Posted by admin on July 31, 2015 0 Comments

Earthquake location 51.7333S, -176.7636WA light earthquake with magnitude 4 (ml/mb) was detected on Monday, Andreanof Islands, Aleutian Islands, Alaska (0 miles). Id of earthquake: ak11657492. Event ids that are associated: ak11657492. The temblor was picked up at 05:20:23 / 5:20 am (local time epicenter). Exact location of earthquake, longitude -176.7636 West, latitude 51.7333 North, depth = 71.5 km. The earthquake occurred at a depth of 71.5 km (44 miles) below the earth’s surface. 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: 27/07/15 / 2015-07-27 05:20:23 / July 27, 2015 @ 5:20 am.

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

Questions or comments?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: Andreanof Islands, Aleutian Islands, Alaska. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -176.7636° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.7333° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 71.5 km Depth of the event in kilometers.
Place Andreanof Islands, Aleutian Islands, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2015-07-27 05:20:23 Time when the event occurred. UTC/GMT
Updated 2015-07-31 01:33:20 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 3.28 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 ak The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,ak, A comma-separated list of network contributors.
Number of Stations Used 21 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.51 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 190.799984736 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type ml The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID ak11657492 Id of event.
Event Code 11657492 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak11657492, A comma-separated list of event ids that are associated to an event.

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