Minor earthquake 3.9 mag, 81 km SSW of Unalaska, Alaska

A minor earthquake with magnitude 3.9 (ml/mb) was detected on Tuesday, 81 km SSW of Unalaska, Alaska (50 miles). The 3.9-magnitude earthquake was detected at 21:55:43 / 9:55 pm (local time epicenter). The earthquake occurred at a depth of 41.53 km (26 miles) below the earth’s surface. Exact location of event, depth 41.53 km, -166.8264° West, 53.164° North. Global time and date of event 01/05/19 / 2019-05-01 08:55:43 / May 1, 2019 @ 8:55 am UTC/GMT. Event id: us70003f28. Ids that are associated to the earthquake: ak0195k94ca5, us70003f28.

Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. In the past 24 hours, there have been two, in the last 10 days three, in the past 30 days five and in the last 365 days sixty-seven earthquakes of magnitude 3.0 or greater that have been detected nearby. Every year there are an estimated 130,000 minor earthquakes in the world.

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What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 81 km SSW of Unalaska, Alaska. This information comes from the USGS Earthquake Notification Service.

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Parameter	Value	Description
Magnitude	3.9 mb	The magnitude for the event.
Longitude	-166.8264° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	53.164° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	41.53 km	Depth of the event in kilometers.
Place	81km SSW of Unalaska, Alaska	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2019-05-01 08:55:43	Time when the event occurred. UTC/GMT
Updated	2019-05-07 13:04:15	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	234	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	,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	0.648	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	1.42 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	186	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	us70003f28	Id of event.
Event Code	70003f28	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ak0195k94ca5,us70003f28,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake 3.9 mag, 81 km SSW of Unalaska, Alaska

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