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Minor earthquake, 2.9 mag strikes near Anchorage in Alaska

Earthquake location 61.363S, -150.0816WA minor earthquake with magnitude 2.9 (ml/mb) was detected on Saturday, 18 kilometers (11 miles) from Anchorage in Alaska. The earthquake occurred at a depth of 19.8 km (12 miles) below the earth’s surface. Date and time of earthquake in UTC/GMT: 15/12/18 / 2018-12-15 17:18:30 / December 15, 2018 @ 5:18 pm. The 2.9-magnitude earthquake was detected at 08:18:30 / 8:18 am (local time epicenter). Unique identifier: ak20514550. Ids that are associated to the event: ak20514550. Exact location of earthquake, -150.0816° West, 61.363° North, depth 19.8 km.

Event epicenter was 19 km (12 miles) from Anchorage (c. 291 800 pop), 28 km (17 miles) from Eagle River (c. 24 800 pop), 31 km (19 miles) from Knik-Fairview (c. 14 900 pop), 49 km (31 miles) from Lakes (c. 8 400 pop), 45 km (28 miles) from Tanaina (c. 8 200 pop). Nearest cities/city/towns to hypocenter/epicentrum was Palmer, Gateway, Lakes (min 5000 pop). Country/countries that might be effected, United States (c. 310 233 000 pop).

In the past 24 hours, there have been two, in the last 10 days fifty, in the past 30 days three hundred and eighty-nine and in the last 365 days four hundred and thirty-nine earthquakes of magnitude 3.0 or greater that have been detected in the same area. Each year there are an estimated 130,000 minor quakes in the world. Earthquakes 2.5 to 3.5 are often felt, but only causes minor damage.

How would you describe the shaking?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 18 km NNW of Anchorage, Alaska. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 2.9 mb The magnitude for the event.
Longitude -150.0816° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 61.363° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 19.8 km Depth of the event in kilometers.
Place 18km NNW 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 2018-12-15 17:18:30 Time when the event occurred. UTC/GMT
Updated 2018-12-15 17:24:44 Time when the event was most recently updated. UTC/GMT
Timezone offset -540 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 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 129 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 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 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 ak20514550 Id of event.
Event Code 20514550 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak20514550, A comma-separated list of event ids that are associated to an event.

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