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Light earthquake, 4 mag has occurred near Amatignak Island in Alaska

Posted by admin on August 21, 2015 0 Comments

Earthquake location 51.1409S, -178.0082WA light earthquake magnitude 4 (ml/mb) strikes 78 km E of Amatignak Island, Alaska (48 miles) on Thursday. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The 4-magnitude earthquake has occurred at 11:18:40 / 11:18 am (local time epicenter). Id of earthquake: us100033tv. Event ids that are associated: us100033tv. Exact location of earthquake, longitude -178.0082 West, latitude 51.1409 North, depth = 10 km. The earthquake occurred at a depth of 10 km (6 miles) below the earth’s surface. Global time and date of event 20/08/15 / 2015-08-20 23:18:40 / August 20, 2015 @ 11:18 pm UTC/GMT.

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

Did you feel the quake?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. 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: 78 km E of Amatignak Island, Alaska.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -178.0082° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.1409° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 78km E of Amatignak 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 2015-08-20 23:18:40 Time when the event occurred. UTC/GMT
Updated 2015-08-21 00:16:33 Time when the event was most recently updated. UTC/GMT
Timezone offset -720 Timezone offset from UTC in minutes at the event epicenter.
Felt 0 The total number of felt reports
CDI 1 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 ,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 0.89 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.25 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 207 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 us100033tv Id of event.
Event Code 100033tv An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us100033tv, A comma-separated list of event ids that are associated to an event.

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