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Minor earthquake: M2.8 quake has struck near Willow in Alaska

Earthquake location 61.6366S, -150.9584WA minor earthquake with magnitude 2.8 (ml/mb) was reported 50 kilometers (31 miles) from Willow in Alaska on Monday. The earthquake occurred at a depth of 56.9 km (35 miles). The 2.8-magnitude earthquake has occurred at 07:02:14 / 7:02 am (local time epicenter). Exact location, longitude -150.9584° West, latitude 61.6366° North, depth = 56.9 km. Date and time of earthquake in UTC/GMT: 23/12/19 / 2019-12-23 16:02:14 / December 23, 2019 @ 4:02 pm. All ids that are associated to the event: ak019geoeai8. Unique identifier: ak019geoeai8.

Nearest cities/city/villages to epicentrum/hypocenter was Knik-Fairview, Anchorage, Meadow Lakes (min 5000 pop). Epicenter of the earthquake was 73 km (45 miles) from Anchorage (c. 291 800 pop), 73 km (45 miles) from Knik-Fairview (c. 14 900 pop), 72 km (45 miles) from Meadow Lakes (c. 7 600 pop). Close country/countries that might be effected, United States (c. 310 233 000 pop).

Each year there are an estimated 1,300,000 minor earthquakes in the world. In the past 24 hours, there have been 0, in the last 10 days three, in the past 30 days nine and in the last 365 days one hundred and fifty-five earthquakes of magnitude 3.0 or greater that has struck near. Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage.

Questions or comments?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 50 km WSW of Willow, Alaska. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 2.8 mb The magnitude for the event.
Longitude -150.9584° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 61.6366° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 56.9 km Depth of the event in kilometers.
Place 50km WSW 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 2019-12-23 16:02:14 Time when the event occurred. UTC/GMT
Updated 2019-12-23 16:10:13 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 121 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 0.81 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 ak019geoeai8 Id of event.
Event Code 019geoeai8 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak019geoeai8, A comma-separated list of event ids that are associated to an event.

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