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Moderate earthquake 5.1 mag, 98 km WNW of Attu Station, Alaska



Earthquake location 53.2834S, 171.91WA moderate earthquake magnitude 5.1 (ml/mb) has occurred on Wednesday, 98 km WNW of Attu Station, Alaska (61 miles). Unique identifier: us20009xp9. Ids that are associated to the event: at00otaz2x, us20009xp9. Exact location of event, longitude 171.91 East, latitude 53.2834 North, depth = 24.9 km. The 5.1-magnitude earthquake has occurred at 07:18:40 / 7:18 am (local time epicenter). The epicenter of the earthquake was roughly 24.9 km (15 miles) below the earth’s surface. Global date and time of event UTC/GMT: 18/07/17 / 2017-07-18 20:18:40 / July 18, 2017 @ 8:18 pm. A tsunami warning has been issued near Attu Station in Alaska (Does not indicate if a tsunami actually did or will exist).

Earthquakes 5.0 to 6.0 may cause light damage to buildings and other structures. In the past 24 hours, there have been five, in the last 10 days five, in the past 30 days six and in the last 365 days twenty-eight earthquakes of magnitude 3.0 or greater that has struck near. There are an estimated 1320 moderate quakes in the world each year.

Questions or comments?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city and country. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 98 km WNW of Attu Station, Alaska. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 5.1 mb The magnitude for the event.
Longitude 171.91° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 53.2834° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 24.9 km Depth of the event in kilometers.
Place 98km WNW of Attu Station, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-07-18 20:18:40 Time when the event occurred. UTC/GMT
Updated 2017-07-18 20:36:56 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 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 400 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, 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 1.436 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.61 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 93 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 us20009xp9 Id of event.
Event Code 20009xp9 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00otaz2x,us20009xp9, A comma-separated list of event ids that are associated to an event.

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