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Light earthquake, 4 mag was detected near Big Lake in Alaska



Earthquake location 61.4583S, -149.926WA light earthquake magnitude 4 (ml/mb) has struck on Thursday, 7 kilometers (4 miles) from Big Lake in Alaska. 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 38.9 km (24 miles). Unique identifier: ak13406698. Ids that are associated to the event: at00o5apgh, ak13406698. The temblor was reported at 19:24:18 / 7:24 pm (local time epicenter). Exact location of earthquake, -149.926° West, 61.4583° North, depth 38.9 km. Date and time of earthquake in UTC/GMT: 08/04/16 / 2016-04-08 03:24:18 / April 8, 2016 @ 3:24 am.

Nearby country/countries that might be effected, United States (c. 310 233 000 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Palmer, Gateway, Lakes. Event epicenter was 27 km (17 miles) from Anchorage (c. 291 800 pop), 24 km (15 miles) from Eagle River (c. 24 800 pop), 18 km (11 miles) from Knik-Fairview (c. 14 900 pop), 37 km (23 miles) from Lakes (c. 8 400 pop), 32 km (20 miles) from Tanaina (c. 8 200 pop), 29 km (18 miles) from Wasilla (c. 7 800 pop).

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

Questions or comments?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity 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: 7 km SSE of Big Lake, Alaska.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -149.926° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 61.4583° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 38.9 km Depth of the event in kilometers.
Place 7km SSE 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 2016-04-08 03:24:18 Time when the event occurred. UTC/GMT
Updated 2016-04-08 04:00:06 Time when the event was most recently updated. UTC/GMT
Timezone offset -480 Timezone offset from UTC in minutes at the event epicenter.
Felt 161 The total number of felt reports
CDI 3.8 The maximum reported intensity for the event.
MMI 3.42 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 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 307 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 0.62 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 ak13406698 Id of event.
Event Code 13406698 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,at00o5apgh,ak13406698, A comma-separated list of event ids that are associated to an event.

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