Moderate earthquake, 5.1 mag strikes near Big Lake in Alaska

A moderate earthquake magnitude 5.1 (ml/mb) has occurred on Friday, 17 kilometers (11 miles) from Big Lake in Alaska. The earthquake was roughly at a depth of 31.1 km (19 miles). The temblor was picked up at 11:26:55 / 11:26 am (local time epicenter). Unique identifier: ak20420230. Ids that are associated to the event: at00pj0wsu, ak20420230, us1000hyna. A tsunami warning has been issued near Big Lake in Alaska (Does not indicate if a tsunami actually did or will exist). Exact time and date of earthquake 30/11/18 / 2018-11-30 20:26:55 / November 30, 2018 @ 8:26 pm UTC/GMT. Exact location of earthquake, longitude -150.0636 West, latitude 61.3922 North, depth = 31.1 km.

Country/countries that might be effected, United States (c. 310 233 000 pop). Epicenter of the event was 21 km (13 miles) from Anchorage (c. 291 800 pop), 28 km (17 miles) from Eagle River (c. 24 800 pop), 28 km (17 miles) from Knik-Fairview (c. 14 900 pop), 47 km (29 miles) from Lakes (c. 8 400 pop), 43 km (26 miles) from Tanaina (c. 8 200 pop), 39 km (24 miles) from Wasilla (c. 7 800 pop), 36 km (22 miles) from Meadow Lakes (c. 7 600 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Sterling, Palmer, Gateway.

There are an estimated 1320 moderate earthquakes in the world each year. Earthquakes 5.0 to 6.0 may cause light damage to buildings and other structures. In the past 24 hours, there have been thirty-six, in the last 10 days thirty-seven, in the past 30 days thirty-eight and in the last 365 days ninety-four earthquakes of magnitude 3.0 or greater that have been detected nearby.

Did you feel the quake?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 17 km SSW of Big Lake, Alaska. This information comes from the USGS Earthquake Notification Service.

Alaska Anchorage Big Lake Eagle River Gateway Knik-Fairview Lakes Meadow Lakes Palmer Sterling Tanaina United States Wasilla

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Parameter	Value	Description
Magnitude	5.1 mb	The magnitude for the event.
Longitude	-150.0636° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	61.3922° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	31.1 km	Depth of the event in kilometers.
Place	17km SSW 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	2018-11-30 20:26:55	Time when the event occurred. UTC/GMT
Updated	2018-11-30 20:49:39	Time when the event was most recently updated. UTC/GMT
Timezone offset	-540	Timezone offset from UTC in minutes at the event epicenter.
Felt	18	The total number of felt reports
CDI	4.3	The maximum reported intensity for the event.
MMI	6.19	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	408	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,us,	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	0.93 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	ak20420230	Id of event.
Event Code	20420230	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,at00pj0wsu,ak20420230,us1000hyna,	A comma-separated list of event ids that are associated to an event.

Parameter

Value

Description

Magnitude

5.1 mb

The magnitude for the event.

Longitude

-150.0636° West

Decimal degrees longitude. Negative values for western longitudes.

Latitude

61.3922° North

Decimal degrees latitude. Negative values for southern latitudes.

Depth

31.1 km

Depth of the event in kilometers.

Place

17km SSW 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

2018-11-30 20:26:55

Time when the event occurred. UTC/GMT

Updated

2018-11-30 20:49:39

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

4.3

The maximum reported intensity for the event.

MMI

6.19

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

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

408

A number describing how significant the event is. Larger numbers indicate a more significant event.

Network

The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.

Sources

,at,ak,us,

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

0.93 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

The method or algorithm used to calculate the preferred magnitude for the event.

Event Type

earthquake

Type of seismic event.

Event ID

ak20420230

Id of event.

Event Code

20420230

An identifying code assigned by, and unique from, the corresponding source for the event.

Event IDS

,at00pj0wsu,ak20420230,us1000hyna,

A comma-separated list of event ids that are associated to an event.

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Moderate earthquake, 5.1 mag strikes near Big Lake in Alaska

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