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Moderate earthquake, 5.9 mag strikes near Adak in Alaska


Earthquake location 51.1642S, -177.1022WA moderate earthquake magnitude 5.9 (ml/mb) has occurred on Monday, 85 km SSW of Adak, Alaska (53 miles). Exact location of event, depth 36.94 km, -177.1022° West, 51.1642° North. A tsunami warning has been issued near Adak in Alaska (Does not indicate if a tsunami actually did or will exist). The earthquake occurred at a depth of 36.94 km (23 miles) below the earth’s surface. All ids that are associated to the event: at00opn574, us10008qh7, ak15988426. Unique identifier: us10008qh7. Exact time and date of event in UTC/GMT: 08/05/17 / 2017-05-08 15:47:31 / May 8, 2017 @ 3:47 pm. The 5.9-magnitude earthquake was detected at 03:47:31 / 3:47 am (local time epicenter).

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

Did you feel anything?

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. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 85 km SSW of Adak, Alaska. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 5.9 mb The magnitude for the event.
Longitude -177.1022° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 51.1642° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 36.94 km Depth of the event in kilometers.
Place 85km SSW 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 2017-05-08 15:47:31 Time when the event occurred. UTC/GMT
Updated 2017-05-08 16:08:08 Time when the event was most recently updated. UTC/GMT
Timezone offset -720 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 3.95 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 536 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,us,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 0.689 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.64 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 57 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mww The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us10008qh7 Id of event.
Event Code 10008qh7 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00opn574,us10008qh7,ak15988426, A comma-separated list of event ids that are associated to an event.

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