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Minor earthquake: M3.3 quake has struck near Big Lake in Alaska

Earthquake location 61.4295S, -149.9751WA minor earthquake with magnitude 3.3 (ml/mb) was reported 10 kilometers (6 miles) from Big Lake in Alaska on Monday. Exact location of earthquake, longitude -149.9751 West, latitude 61.4295 North, depth = 20.5 km. Date and time of earthquake in UTC/GMT: 13/08/19 / 2019-08-13 00:11:09 / August 13, 2019 @ 12:11 am. Id of earthquake: ak019ac3zgqy. Event ids that are associated: ak019ac3zgqy. The 3.3-magnitude earthquake was detected at 15:11:09 / 3:11 pm (local time epicenter). The epicenter of the earthquake was roughly 20.5 km (13 miles) below the earth’s surface.

The epicenter was 24 km (15 miles) from Anchorage (c. 291 800 pop), 25 km (15 miles) from Eagle River (c. 24 800 pop), 22 km (14 miles) from Knik-Fairview (c. 14 900 pop), 40 km (25 miles) from Lakes (c. 8 400 pop), 36 km (23 miles) from Tanaina (c. 8 200 pop). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Palmer, Gateway, Lakes. 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. Each year there are an estimated 130,000 minor quakes in the world. In the past 24 hours, there have been one, in the last 10 days five, in the past 30 days eight and in the last 365 days five hundred and fifty earthquakes of magnitude 3.0 or greater that have been detected in the same area.

Did you feel the quake?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city and country. 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: 10 km S of Big Lake, Alaska.

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More information

Parameter Value Description
Magnitude 3.3 mb The magnitude for the event.
Longitude -149.9751° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 61.4295° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 20.5 km Depth of the event in kilometers.
Place 10km S of Big Lake, Alaska Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2019-08-13 00:11:09 Time when the event occurred. UTC/GMT
Updated 2019-08-13 00:19:34 Time when the event was most recently updated. UTC/GMT
Timezone offset -540 Timezone offset from UTC in minutes at the event epicenter.
Felt 15 The total number of felt reports
CDI 4.3 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 174 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 0.84 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 ak019ac3zgqy Id of event.
Event Code 019ac3zgqy An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak019ac3zgqy, A comma-separated list of event ids that are associated to an event.

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