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

A 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.

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.

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

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

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

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

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

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