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Light earthquake: M4.5 quake has struck near Yunaska Island in Alaska

Posted by admin on September 29, 2017 0 Comments

Earthquake location 52.0498S, -169.976WA light earthquake magnitude 4.5 (ml/mb) has struck on Thursday, 81 km SE of Yunaska Island, Alaska (50 miles). Exact location of earthquake, longitude -169.976 West, latitude 52.0498 North, depth = 29.97 km. The earthquake occurred at a depth of 29.97 km (19 miles). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Event ids that are associated to the earthquake: us2000awbw. Id of event: us2000awbw. The temblor was detected at 14:26:45 / 2:26 pm (local time epicenter). Global time and date of event 29/09/17 / 2017-09-29 01:26:45 / September 29, 2017 @ 1:26 am UTC/GMT.

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

Questions or comments?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. 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: 81 km SE of Yunaska Island, Alaska.

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More information

Parameter Value Description
Magnitude 4.5 mb The magnitude for the event.
Longitude -169.976° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 52.0498° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 29.97 km Depth of the event in kilometers.
Place 81km SE of Yunaska Island, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-09-29 01:26:45 Time when the event occurred. UTC/GMT
Updated 2017-09-29 01:46:36 Time when the event was most recently updated. UTC/GMT
Timezone offset -660 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 312 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 0.776 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.84 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 192 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 us2000awbw Id of event.
Event Code 2000awbw An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000awbw, A comma-separated list of event ids that are associated to an event.

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