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Minor earthquake, 2.8 mag strikes near Old Iliamna in Alaska



Earthquake location 59.947S, -153.7405WA minor earthquake with magnitude 2.8 (ml/mb) was detected on Wednesday, 69 km ENE of Old Iliamna, Alaska (43 miles). Exact time and date of earthquake 21/10/15 / 2015-10-21 13:44:11 / October 21, 2015 @ 1:44 pm UTC/GMT. The earthquake occurred at a depth of 189.7 km (118 miles). Exact location, longitude -153.7405° West, latitude 59.947° North, depth = 189.7 km. Unique identifier: ak11745074. Ids that are associated to the event: ak11745074. The 2.8-magnitude earthquake was detected at 05:44:11 / 5:44 am (local time epicenter).

Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage. There are an estimated 1,300,000 minor earthquakes in the world each year. In the past 24 hours, there have been 0, in the last 10 days five, in the past 30 days twelve and in the last 365 days one hundred and twenty earthquakes of magnitude 3.0 or greater that has occurred nearby.

Did you feel anything?

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. 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: 69 km ENE of Old Iliamna, Alaska.

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More information

Parameter Value Description
Magnitude 2.8 mb The magnitude for the event.
Longitude -153.7405° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 59.947° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 189.7 km Depth of the event in kilometers.
Place 69km ENE of Old Iliamna, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2015-10-21 13:44:11 Time when the event occurred. UTC/GMT
Updated 2015-10-21 14:10:50 Time when the event was most recently updated. UTC/GMT
Timezone offset -480 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 automatic 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 121 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 0.67 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 ak11745074 Id of event.
Event Code 11745074 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak11745074, A comma-separated list of event ids that are associated to an event.

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