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Moderate earthquake, 5.5 mag has occurred near Adak in Alaska


Earthquake location 51.8294S, -175.374WA moderate earthquake magnitude 5.5 (ml/mb) strikes 88 km E of Adak, Alaska (55 miles) on Saturday. A tsunami warning has been issued near Adak in Alaska (Does not indicate if a tsunami actually did or will exist). Unique identifier: us10008vvg. Ids that are associated to the event: at00oqniee, ak16133328, us10008vvg. Global time and date of event 28/05/17 / 2017-05-28 07:06:17 / May 28, 2017 @ 7:06 am UTC/GMT. Exact location of event, depth 50.72 km, -175.374° West, 51.8294° North. The temblor was picked up at 21:06:17 / 9:06 pm (local time epicenter). The earthquake occurred at a depth of 50.72 km (32 miles) below the earth’s surface.

In the past 24 hours, there have been two, in the last 10 days three, in the past 30 days seven and in the last 365 days one hundred and eighty-eight earthquakes of magnitude 3.0 or greater that was reported nearby. Earthquakes 5.0 to 6.0 may cause light damage to buildings and other structures. Each year there are an estimated 1320 moderate earthquakes in the world.

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. 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: 88 km E of Adak, Alaska.

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More information

Parameter Value Description
Magnitude 5.5 mb The magnitude for the event.
Longitude -175.374° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.8294° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 50.72 km Depth of the event in kilometers.
Place 88km E of Adak, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-05-28 07:06:17 Time when the event occurred. UTC/GMT
Updated 2017-05-28 07:35:01 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 3.8 The maximum estimated instrumental intensity for the event.
Alert Level green 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 1 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 465 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 ,at,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 0.5 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.92 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 98 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 us10008vvg Id of event.
Event Code 10008vvg An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00oqniee,ak16133328,us10008vvg, A comma-separated list of event ids that are associated to an event.

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