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Light earthquake: M4.3 quake has struck near Willow in Alaska

Earthquake location 61.7866S, -150.6877WA light earthquake with magnitude 4.3 (ml/mb) was reported 33 kilometers (21 miles) from Willow in Alaska on Sunday. Exact location of earthquake, -150.6877° West, 61.7866° North, depth 59.3 km. Unique identifier: ak12906907. Ids that are associated to the event: us10004td2, ak12906907. The earthquake occurred at a depth of 59.3 km (37 miles) below the earth’s surface. The 4.3-magnitude earthquake was detected at 04:48:51 / 4:48 am (local time epicenter). Global time and date of event 28/02/16 / 2016-02-28 13:48:51 / February 28, 2016 @ 1:48 pm UTC/GMT. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist).

Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Palmer, Elmendorf Air Force Base, Gateway. Nearby country/countries, United States (c. 310 233 000 pop) (That might be effected). The epicenter was 76 km (47 miles) from Anchorage (c. 291 800 pop), 79 km (49 miles) from Eagle River (c. 24 800 pop), 65 km (40 miles) from Knik-Fairview (c. 14 900 pop), 75 km (47 miles) from Lakes (c. 8 400 pop), 69 km (43 miles) from Tanaina (c. 8 200 pop), 70 km (43 miles) from Wasilla (c. 7 800 pop).

In the past 24 hours, there have been two, in the last 10 days four, in the past 30 days nine and in the last 365 days sixty-eight earthquakes of magnitude 3.0 or greater that have been detected nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. Every year there are an estimated 13,000 light earthquakes in the world.

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, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 33 km W of Willow, Alaska. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 4.3 mb The magnitude for the event.
Longitude -150.6877° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 61.7866° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 59.3 km Depth of the event in kilometers.
Place 33km W 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 2016-02-28 13:48:51 Time when the event occurred. UTC/GMT
Updated 2016-02-28 14:29:04 Time when the event was most recently updated. UTC/GMT
Timezone offset -540 Timezone offset from UTC in minutes at the event epicenter.
Felt 34 The total number of felt reports
CDI 3.4 The maximum reported intensity for the event.
MMI 2.52 The maximum estimated instrumental intensity for the event.
Alert Level green 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 296 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 ,us,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 0.88 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 ak12906907 Id of event.
Event Code 12906907 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10004td2,ak12906907, A comma-separated list of event ids that are associated to an event.

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