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Light World Earthquakes Magnitude 4-4.9

Light earthquake, 4.1 mag was detected near Atka in Alaska

Posted by admin on September 7, 2015 0 Comments

Earthquake location 51.161S, -174.8128WA light earthquake with magnitude 4.1 (ml/mb) was detected on Friday, 122 km SSW of Atka, Alaska (76 miles). Exact location of earthquake, -174.8128° West, 51.161° North, depth 21.97 km. The epicenter of the earthquake was roughly 21.97 km (14 miles) below the earth’s surface. The temblor was picked up at 07:29:02 / 7:29 am (local time epicenter). Date and time of earthquake in UTC/GMT: 04/09/15 / 2015-09-04 19:29:02 / September 4, 2015 @ 7:29 pm. 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: ak11692059, us20003gi6. Id of event: us20003gi6.

Each 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 fourty-one, in the last 10 days fourty-nine, in the past 30 days sixty and in the last 365 days one hundred and fourty-five earthquakes of magnitude 3.0 or greater that was reported nearby.

Questions or comments?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage 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: 122 km SSW of Atka, 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 -174.8128° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.161° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 21.97 km Depth of the event in kilometers.
Place 122km SSW of Atka, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2015-09-04 19:29:02 Time when the event occurred. UTC/GMT
Updated 2015-09-07 14:14:38 Time when the event was most recently updated. UTC/GMT
Timezone offset -720 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 1.11 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.8 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 213 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 us20003gi6 Id of event.
Event Code 20003gi6 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak11692059,us20003gi6, A comma-separated list of event ids that are associated to an event.

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