Minor earthquake: M3.7 quake has struck near Chernabura Island in Alaska

A minor earthquake magnitude 3.7 (ml/mb) has occurred on Friday, 87 km WSW of Chernabura Island, Alaska (54 miles). The earthquake occurred at a depth of 10 km (6 miles) below the earth’s surface. Event ids that are associated to the earthquake: us2000gait. Id of event: us2000gait. Exact time and date of event in UTC/GMT: 21/07/18 / 2018-07-21 08:15:17 / July 21, 2018 @ 8:15 am. The temblor was reported at 21:15:17 / 9:15 pm (local time epicenter). Exact location of event, longitude -160.7676 West, latitude 54.4268 North, depth = 10 km.

Each year there are an estimated 130,000 minor quakes in the world. Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. In the past 24 hours, there have been three, in the last 10 days eleven, in the past 30 days seventeen and in the last 365 days one hundred and one earthquakes of magnitude 3.0 or greater that was reported 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. 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: 87 km WSW of Chernabura Island, Alaska.

Alaska Chernabura Island

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Parameter	Value	Description
Magnitude	3.7 mb	The magnitude for the event.
Longitude	-160.7676° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	54.4268° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	10 km	Depth of the event in kilometers.
Place	87km WSW of Chernabura Island, Alaska	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2018-07-21 08:15:17	Time when the event occurred. UTC/GMT
Updated	2018-07-21 08:24:05	Time when the event was most recently updated. UTC/GMT
Timezone offset	-660	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	211	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	0.795	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.77 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	203	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	us2000gait	Id of event.
Event Code	2000gait	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us2000gait,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake: M3.7 quake has struck near Chernabura Island in Alaska

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