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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.1 mag has occurred near Tanaga Volcano in Alaska

Posted by admin on October 11, 2017 0 Comments

Earthquake location 51.7178S, -177.733WA light earthquake with magnitude 4.1 (ml/mb) was reported 33 km ESE of Tanaga Volcano, Alaska (21 miles) on Monday. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of earthquake, longitude -177.733 West, latitude 51.7178 North, depth = 70.81 km. All ids that are associated to the event: ak16849177, us2000aurc. Unique identifier: us2000aurc. The 4.1-magnitude earthquake has occurred at 05:25:19 / 5:25 am (local time epicenter). The earthquake occurred at a depth of 70.81 km (44 miles) below the earth’s surface. Global date and time of event UTC/GMT: 18/09/17 / 2017-09-18 15:25:19 / September 18, 2017 @ 3:25 pm.

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

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, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 33 km ESE of Tanaga Volcano, Alaska. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude -177.733° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.7178° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 70.81 km Depth of the event in kilometers.
Place 33km ESE of Tanaga Volcano, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-09-18 15:25:19 Time when the event occurred. UTC/GMT
Updated 2017-10-11 16:40:07 Time when the event was most recently updated. UTC/GMT
Timezone offset -600 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 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 1.644 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.69 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 185 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 us2000aurc Id of event.
Event Code 2000aurc An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak16849177,us2000aurc, A comma-separated list of event ids that are associated to an event.

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