Minor earthquake 3.9 mag, 37 km WSW of Agrihan, Northern Mariana Islands

A minor earthquake magnitude 3.9 (ml/mb) has struck on Wednesday, 37 km WSW of Agrihan, Northern Mariana Islands (23 miles). The 3.9-magnitude earthquake has occurred at 23:42:46 / 11:42 pm (local time epicenter). Date and time of earthquake in UTC/GMT: 21/09/16 / 2016-09-21 13:42:46 / September 21, 2016 @ 1:42 pm. Exact location of earthquake, 145.3378° East, 18.6318° North, depth 188.3 km. Unique identifier: us10006u37. Ids that are associated to the event: us10006u37. The epicenter was at a depth of 188.3 km (117 miles).

Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. There are an estimated 130,000 minor quakes in the world each year. In the past 24 hours, there have been two, in the last 10 days six, in the past 30 days thirteen and in the last 365 days one hundred and fourteen earthquakes of magnitude 3.0 or greater that was reported nearby.

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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, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 37 km WSW of Agrihan, Northern Mariana Islands. This data comes from the USGS Earthquake Notification Service.

Agrihan Northern Mariana Islands

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Parameter	Value	Description
Magnitude	3.9 mb	The magnitude for the event.
Longitude	145.3378° East	Decimal degrees longitude. Negative values for western longitudes.
Latitude	18.6318° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	188.3 km	Depth of the event in kilometers.
Place	37km WSW of Agrihan, Northern Mariana Islands	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2016-09-21 13:42:46	Time when the event occurred. UTC/GMT
Updated	2016-10-16 07:01:01	Time when the event was most recently updated. UTC/GMT
Timezone offset	600	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	,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	3.399	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.53 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	174	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	us10006u37	Id of event.
Event Code	10006u37	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us10006u37,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake 3.9 mag, 37 km WSW of Agrihan, Northern Mariana Islands

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