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Light earthquake: M4.7 quake has struck near Big Lake in Alaska

Earthquake location 61.5116S, -149.9188WA light earthquake with magnitude 4.7 (ml/mb) was reported 2 kilometers (1 miles) from Big Lake in Alaska on Thursday. The 4.7-magnitude earthquake has occurred at 17:33:38 / 5:33 pm (local time epicenter). Exact location of earthquake, -149.9188° West, 61.5116° North, depth 50.1 km. Date and time of earthquake in UTC/GMT: 11/01/19 / 2019-01-11 02:33:38 / January 11, 2019 @ 2:33 am. All ids that are associated to the event: at00pl5b42, ak019i8au86. Unique identifier: ak019i8au86. A tsunami warning has been issued near Big Lake in Alaska (Does not indicate if a tsunami actually did or will exist). The earthquake was roughly at a depth of 50.1 km (31 miles).

Epicenter of the event was 33 km (20 miles) from Anchorage (c. 291 800 pop), 28 km (18 miles) from Eagle River (c. 24 800 pop), 17 km (11 miles) from Knik-Fairview (c. 14 900 pop), 34 km (21 miles) from Lakes (c. 8 400 pop), 29 km (18 miles) from Tanaina (c. 8 200 pop), 27 km (16 miles) from Wasilla (c. 7 800 pop), 21 km (13 miles) from Meadow Lakes (c. 7 600 pop). Country/countries that might be effected, United States (c. 310 233 000 pop). Nearest cities/city/towns to hypocenter/epicentrum was Palmer, Gateway, Lakes (min 5000 pop).

Each year there are an estimated 13,000 light earthquakes in the world. In the past 24 hours, there have been one, in the last 10 days fifteen, in the past 30 days fifty-six and in the last 365 days five hundred and four earthquakes of magnitude 3.0 or greater that was reported nearby. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Questions or comments?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage at your home, city and country. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 2 km ESE of Big Lake, Alaska.

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More information

Parameter Value Description
Magnitude 4.7 mb The magnitude for the event.
Longitude -149.9188° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 61.5116° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 50.1 km Depth of the event in kilometers.
Place 2km ESE 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 2019-01-11 02:33:38 Time when the event occurred. UTC/GMT
Updated 2019-01-11 02:48:21 Time when the event was most recently updated. UTC/GMT
Timezone offset -540 Timezone offset from UTC in minutes at the event epicenter.
Felt 142 The total number of felt reports
CDI 3.8 The maximum reported intensity for the event.
MMI 3.52 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 1 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 394 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 ,at,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 0.64 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 ak019i8au86 Id of event.
Event Code 019i8au86 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00pl5b42,ak019i8au86, A comma-separated list of event ids that are associated to an event.

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