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Light World Earthquakes Magnitude 4-4.9

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

Posted by admin on November 16, 2017 0 Comments

Earthquake location 51.7741S, -169.8547WA light earthquake with magnitude 4 (ml/mb) was detected on Thursday, 111 km SSE of Yunaska Island, Alaska (69 miles). The epicenter of the earthquake was roughly 30.99 km (19 miles) below the earth’s surface. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Event id: us1000auh7. Ids that are associated to the earthquake: ak17090587, us1000auh7. Exact time and date of earthquake 20/10/17 / 2017-10-20 09:27:03 / October 20, 2017 @ 9:27 am UTC/GMT. The temblor was detected at 22:27:03 / 10:27 pm (local time epicenter). Exact location, longitude -169.8547° West, latitude 51.7741° North, depth = 30.99 km.

Every year there are an estimated 13,000 light earthquakes in the world. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been ten, in the last 10 days twenty, in the past 30 days thirty-one and in the last 365 days one hundred and sixty-seven earthquakes of magnitude 3.0 or greater that has struck near.

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. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 111 km SSE of Yunaska Island, Alaska. This data 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 -169.8547° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.7741° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 30.99 km Depth of the event in kilometers.
Place 111km SSE 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 2017-10-20 09:27:03 Time when the event occurred. UTC/GMT
Updated 2017-11-16 12:35:53 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 246 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 ,ak,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 1.017 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.16 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 186 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 us1000auh7 Id of event.
Event Code 1000auh7 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak17090587,us1000auh7, A comma-separated list of event ids that are associated to an event.

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