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Minor earthquake 3.1 mag, 123 km SE of Cold Bay, Alaska

Earthquake location 54.3364S, -161.4795WA minor earthquake with magnitude 3.1 (ml/mb) was reported 123 km SE of Cold Bay, Alaska (76 miles) on Thursday. The earthquake occurred at a depth of 31.9 km (20 miles) below the earth’s surface. Unique identifier: ak20039265. Ids that are associated to the event: ak20039265. The temblor was reported at 01:58:49 / 1:58 am (local time epicenter). Global time and date of event 09/08/18 / 2018-08-09 12:58:49 / August 9, 2018 @ 12:58 pm UTC/GMT. Exact location of earthquake, -161.4795° West, 54.3364° North, depth 31.9 km.

Earthquakes 2.5 to 3.5 are often felt, but only causes minor damage. In the past 24 hours, there have been one, in the last 10 days two, in the past 30 days twenty-nine and in the last 365 days one hundred and twenty-eight earthquakes of magnitude 3.0 or greater that has occurred nearby. There are an estimated 130,000 minor earthquakes in the world each year.

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. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 123 km SE of Cold Bay, Alaska.

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More information

Parameter Value Description
Magnitude 3.1 mb The magnitude for the event.
Longitude -161.4795° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 54.3364° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 31.9 km Depth of the event in kilometers.
Place 123km SE of Cold Bay, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-08-09 12:58:49 Time when the event occurred. UTC/GMT
Updated 2018-08-16 18:30:19 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 148 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network ak The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,ak, 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 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.68 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type ml The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID ak20039265 Id of event.
Event Code 20039265 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak20039265, A comma-separated list of event ids that are associated to an event.

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