Light earthquake: M4.3 quake has struck near Adak in Alaska

A light earthquake magnitude 4.3 (ml/mb) has occurred on Friday, 247 km WSW of Adak, Alaska (153 miles). Global time and date of event 30/10/20 / 2020-10-30 16:29:07 / October 30, 2020 @ 4:29 pm UTC/GMT. The earthquake occurred at a depth of 25.78 km (16 miles) below the earth’s surface. Exact location of earthquake, -179.866° West, 50.9491° North, depth 25.78 km. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Unique identifier: us7000c823. Ids that are associated to the event: us7000c823. The temblor was reported at 16:29:07 / 4:29 pm (local time epicenter).

Each year there are an estimated 13,000 light quakes in the world. In the past 24 hours, there have been one, in the last 10 days two, in the past 30 days five and in the last 365 days two hundred and three earthquakes of magnitude 3.0 or greater that has struck near. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

Questions or comments?

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. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 247 km WSW of Adak, Alaska.

Adak Alaska

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Parameter	Value	Description
Magnitude	4.3 mb	The magnitude for the event.
Longitude	-179.866° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	50.9491° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	25.78 km	Depth of the event in kilometers.
Place	247 km WSW of Adak, Alaska	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2020-10-30 16:29:07	Time when the event occurred. UTC/GMT
Updated	2020-10-30 17:17:06	Time when the event was most recently updated. UTC/GMT
Timezone offset		Timezone offset from UTC in minutes at the event epicenter.
Felt		The total number of felt reports
CDI		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	reviewed	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	284	A number describing how significant the event is. Larger numbers indicate a more significant event.
Network	us	The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources	,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	0.677	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.96 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	214	The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type	mb	The method or algorithm used to calculate the preferred magnitude for the event.
Event Type	earthquake	Type of seismic event.
Event ID	us7000c823	Id of event.
Event Code	7000c823	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us7000c823,	A comma-separated list of event ids that are associated to an event.

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Light earthquake: M4.3 quake has struck near Adak in Alaska

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