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Minor earthquake 2.8 mag, 242 km SE of Kodiak, Alaska

Earthquake location 56.1668S, -149.7585WA minor earthquake with magnitude 2.8 (ml/mb) was detected on Monday, 242 km SE of Kodiak, Alaska (150 miles). The temblor was reported at 02:27:57 / 2:27 am (local time epicenter). The epicenter was at a depth of 20.66 km (13 miles). All ids that are associated to the event: ak20016135, us1000g4er. Unique identifier: us1000g4er. Global date and time of event UTC/GMT: 30/07/18 / 2018-07-30 12:27:57 / July 30, 2018 @ 12:27 pm. Exact location, longitude -149.7585° West, latitude 56.1668° North, depth = 20.66 km.

In the past 24 hours, there have been eighteen, in the last 10 days twenty-nine, in the past 30 days one hundred and one and in the last 365 days three thousand, eight hundred and nine earthquakes of magnitude 3.0 or greater that was reported nearby. Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage. There are an estimated 1,300,000 minor quakes in the world each year.

Questions or comments?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. 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: 242 km SE of Kodiak, Alaska.

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More information

Parameter Value Description
Magnitude 2.8 mb The magnitude for the event.
Longitude -149.7585° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 56.1668° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 20.66 km Depth of the event in kilometers.
Place 242km SE of Kodiak, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-07-30 12:27:57 Time when the event occurred. UTC/GMT
Updated 2018-08-10 06:08:16 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 121 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 2.215 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.82 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 244 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 us1000g4er Id of event.
Event Code 1000g4er An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak20016135,us1000g4er, A comma-separated list of event ids that are associated to an event.

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