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Minor World Earthquakes Magnitude -3.9

Minor earthquake: M3.5 quake has struck near Yunaska Island in Alaska


Earthquake location 54.3535S, -170.8483WA minor earthquake magnitude 3.5 (ml/mb) has struck on Thursday, 191 km N of Yunaska Island, Alaska (119 miles). The epicenter was at a depth of 35 km (22 miles). Event id: us100067w4. Ids that are associated to the earthquake: ak13791942, us100067w4. The temblor was detected at 10:38:48 / 10:38 am (local time epicenter). Exact location of earthquake, longitude -170.8483 West, latitude 54.3535 North, depth = 35 km. Global time and date of event 21/07/16 / 2016-07-21 21:38:48 / July 21, 2016 @ 9:38 pm UTC/GMT.

Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. In the past 24 hours, there have been two, in the last 10 days two, in the past 30 days two and in the last 365 days four earthquakes of magnitude 3.0 or greater that was reported nearby. Every year there are an estimated 130,000 minor earthquakes in the world.

Questions or comments?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. 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: 191 km N of Yunaska Island, Alaska.

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More information

Parameter Value Description
Magnitude 3.5 mb The magnitude for the event.
Longitude -170.8483° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 54.3535° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 35 km Depth of the event in kilometers.
Place 191km N of Yunaska Island, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2016-07-21 21:38:48 Time when the event occurred. UTC/GMT
Updated 2016-07-30 00:08:20 Time when the event was most recently updated. UTC/GMT
Timezone offset -660 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 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 188 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 1.634 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.1 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 119 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 us100067w4 Id of event.
Event Code 100067w4 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak13791942,us100067w4, A comma-separated list of event ids that are associated to an event.

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