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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.1 mag has occurred near Near Islands, Aleutian Islands, Alaska

Posted by admin on August 9, 2017 0 Comments

Earthquake location 52.9125S, 171.7129WA light earthquake magnitude 4.1 (ml/mb) has occurred on Friday, Near Islands, Aleutian Islands, Alaska (0 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). All ids that are associated to the event: ak16357011. Unique identifier: ak16357011. Exact time and date of earthquake 21/07/17 / 2017-07-21 04:17:11 / July 21, 2017 @ 4:17 am UTC/GMT. The 4.1-magnitude earthquake has occurred at 04:17:11 / 4:17 am (local time epicenter). The epicenter of the earthquake was roughly 5 km (3 miles) below the earth’s surface. Exact location of earthquake, longitude 171.7129 East, latitude 52.9125 North, depth = 5 km.

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

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. 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: Near Islands, Aleutian Islands, Alaska.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude 171.7129° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 52.9125° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 5 km Depth of the event in kilometers.
Place Near 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 2017-07-21 04:17:11 Time when the event occurred. UTC/GMT
Updated 2017-08-09 21:47:50 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 259 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 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 0.88 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 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 ak16357011 Id of event.
Event Code 16357011 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak16357011, A comma-separated list of event ids that are associated to an event.

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