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

Posted by admin on December 1, 2018 0 Comments

Earthquake location 61.5391S, -149.8642WA light earthquake with magnitude 4 (ml/mb) was detected on Saturday, 5 kilometers (3 miles) from Big Lake in Alaska. The earthquake occurred at a depth of 41.2 km (26 miles). Exact time and date of event in UTC/GMT: 01/12/18 / 2018-12-01 16:04:58 / December 1, 2018 @ 4:04 pm. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Unique identifier: ak20424060. Ids that are associated to the event: ak20424060. The 4-magnitude earthquake was detected at 07:04:58 / 7:04 am (local time epicenter). Exact location of event, longitude -149.8642 West, latitude 61.5391 North, depth = 41.2 km.

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, Anchorage, Elmendorf Air Force Base. Event epicenter was 36 km (22 miles) from Anchorage (c. 291 800 pop), 29 km (18 miles) from Eagle River (c. 24 800 pop), 14 km (9 miles) from Knik-Fairview (c. 14 900 pop), 30 km (19 miles) from Lakes (c. 8 400 pop), 25 km (16 miles) from Tanaina (c. 8 200 pop), 23 km (14 miles) from Wasilla (c. 7 800 pop).

In the past 24 hours, there have been one hundred and fourty-four, in the last 10 days one hundred and fourty-seven, in the past 30 days one hundred and fourty-eight and in the last 365 days two hundred and twelve earthquakes of magnitude 3.0 or greater that was reported 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.

Did you feel the quake?

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 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: 5 km ENE of Big Lake, Alaska.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -149.8642° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 61.5391° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 41.2 km Depth of the event in kilometers.
Place 5km ENE 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 2018-12-01 16:04:58 Time when the event occurred. UTC/GMT
Updated 2018-12-01 16:15:10 Time when the event was most recently updated. UTC/GMT
Timezone offset -540 Timezone offset from UTC in minutes at the event epicenter.
Felt 4 The total number of felt reports
CDI 4.8 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 248 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 0.46 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 ak20424060 Id of event.
Event Code 20424060 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ak20424060, A comma-separated list of event ids that are associated to an event.

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