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Minor earthquake: M2.9 quake has struck near Willow in Alaska

Earthquake location 61.8343S, -149.9489WA minor earthquake magnitude 2.9 (ml/mb) has occurred on Friday, 10 kilometers (6 miles) from Willow in Alaska. Exact time and date of event in UTC/GMT: 18/12/15 / 2015-12-18 22:45:39 / December 18, 2015 @ 10:45 pm. The epicenter of the earthquake was roughly 31.72 km (20 miles) below the earth’s surface. Unique identifier: us1000488r. Ids that are associated to the event: us1000488r. The temblor was detected at 13:45:39 / 1:45 pm (local time epicenter). Exact location of earthquake, longitude -149.9489 West, latitude 61.8343 North, depth = 31.72 km.

Event epicenter was 69 km (43 miles) from Anchorage (c. 291 800 pop), 60 km (38 miles) from Eagle River (c. 24 800 pop), 40 km (25 miles) from Knik-Fairview (c. 14 900 pop), 42 km (26 miles) from Lakes (c. 8 400 pop), 36 km (22 miles) from Tanaina (c. 8 200 pop). Nearest cities/city/towns to hypocenter/epicentrum was Anchorage, Elmendorf Air Force Base, Eagle River (min 5000 pop). Country/countries that might be effected, United States (c. 310 233 000 pop).

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

Did you feel the quake?

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, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 10 km NNE of Willow, 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 -149.9489° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 61.8343° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 31.72 km Depth of the event in kilometers.
Place 10km NNE of Willow, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2015-12-18 22:45:39 Time when the event occurred. UTC/GMT
Updated 2015-12-18 23:00:23 Time when the event was most recently updated. UTC/GMT
Timezone offset -540 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 129 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 ,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 0.459 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.6 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 36 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 us1000488r Id of event.
Event Code 1000488r An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us1000488r, A comma-separated list of event ids that are associated to an event.

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