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Minor earthquake, 3.1 mag was detected near Anchorage in Alaska


Earthquake location 61.3359S, -150.1375WA minor earthquake with magnitude 3.1 (ml/mb) was reported 18 kilometers (11 miles) from Anchorage in Alaska on Sunday. Exact location of event, depth 13.5 km, -150.1375° West, 61.3359° North. The 3.1-magnitude earthquake was detected at 03:29:15 / 3:29 am (local time epicenter). Global time and date of event 02/08/15 / 2015-08-02 11:29:15 / August 2, 2015 @ 11:29 am UTC/GMT. The earthquake occurred at a depth of 13.5 km (8 miles). Unique identifier: ak11667576. Ids that are associated to the event: ak11667576.

Epicenter of the event was 18 km (11 miles) from Anchorage (c. 291 800 pop), 30 km (19 miles) from Eagle River (c. 24 800 pop), 35 km (22 miles) from Knik-Fairview (c. 14 900 pop), 53 km (33 miles) from Lakes (c. 8 400 pop), 50 km (31 miles) from Tanaina (c. 8 200 pop). Country/countries that might be effected, United States (c. 310 233 000 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Palmer, Gateway, Lakes.

There are an estimated 130,000 minor earthquakes in the world each year. In the past 24 hours, there have been two, in the last 10 days eight, in the past 30 days thirteen and in the last 365 days ninety-five earthquakes of magnitude 3.0 or greater that was reported nearby. Earthquakes 2.5 to 3.5 are often felt, but only causes minor damage.

Did you feel it?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking 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: 18 km NW of Anchorage, Alaska. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 3.1 mb The magnitude for the event.
Longitude -150.1375° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 61.3359° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 13.5 km Depth of the event in kilometers.
Place 18km NW of Anchorage, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2015-08-02 11:29:15 Time when the event occurred. UTC/GMT
Updated 2015-08-03 17:32:14 Time when the event was most recently updated. UTC/GMT
Timezone offset -480 Timezone offset from UTC in minutes at the event epicenter.
Felt 1 The total number of felt reports
CDI 2 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 automatic 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 148 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network ak The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,ak, A comma-separated list of network contributors.
Number of Stations Used 83 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.3126137 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.89 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 25.199997984 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 ak11667576 Id of event.
Event Code 11667576 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak11667576, A comma-separated list of event ids that are associated to an event.

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