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Minor earthquake, 3.3 mag strikes near Willow in Alaska


Earthquake location 61.9581S, -150.5738WA minor earthquake magnitude 3.3 (ml/mb) strikes 36 kilometers (22 miles) from Willow in Alaska on Wednesday. The 3.3-magnitude earthquake has occurred at 11:30:02 / 11:30 am (local time epicenter). Event ids that are associated to the earthquake: ak019b192eb4. Id of event: ak019b192eb4. Exact location, longitude -150.5738° West, latitude 61.9581° North, depth = 4.4 km. The earthquake occurred at a depth of 4.4 km (3 miles) below the earth’s surface. Exact time and date of event in UTC/GMT: 28/08/19 / 2019-08-28 20:30:02 / August 28, 2019 @ 8:30 pm.

Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Lakes, Wasilla, Knik-Fairview. Country/countries that might be effected, United States (c. 310 233 000 pop). Epicenter of the earthquake was 71 km (44 miles) from Knik-Fairview (c. 14 900 pop), 77 km (48 miles) from Lakes (c. 8 400 pop), 71 km (44 miles) from Tanaina (c. 8 200 pop), 73 km (45 miles) from Wasilla (c. 7 800 pop), 63 km (39 miles) from Meadow Lakes (c. 7 600 pop).

In the past 24 hours, there have been two, in the last 10 days three, in the past 30 days nine and in the last 365 days five hundred and fifty-three earthquakes of magnitude 3.0 or greater that was reported nearby. There are an estimated 130,000 minor quakes in the world each year. Earthquakes 2.5 to 3.5 are often felt, but only causes minor damage.

How would you describe the shaking?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 36 km NW of Willow, Alaska.

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More information

Parameter Value Description
Magnitude 3.3 mb The magnitude for the event.
Longitude -150.5738° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 61.9581° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 4.4 km Depth of the event in kilometers.
Place 36km NW 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 2019-08-28 20:30:02 Time when the event occurred. UTC/GMT
Updated 2019-08-28 20:33:13 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 168 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 ak019b192eb4 Id of event.
Event Code 019b192eb4 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak019b192eb4, A comma-separated list of event ids that are associated to an event.

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