Minor earthquake, 3.31 mag strikes near Petrolia in CA

A minor earthquake magnitude 3.31 (ml/mb) has struck on Friday, 28 kilometers (17 miles) from Petrolia in CA. The earthquake occurred at a depth of 19.88 km (12 miles) below the earth’s surface. Global date and time of event UTC/GMT: 27/04/19 / 2019-04-27 02:38:37 / April 27, 2019 @ 2:38 am. Exact location, longitude -124.6094971° West, latitude 40.3226662° North, depth = 19.88 km. Unique identifier: nc73172710. Ids that are associated to the event: nc73172710. The 3.31-magnitude earthquake was detected at 18:38:37 / 6:38 pm (local time epicenter).

Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was McKinleyville, Arcata, Bayside. Country/countries that might be effected, United States (c. 310 233 000 pop). The epicenter was 65 km (41 miles) from Eureka (c. 27 200 pop), 75 km (47 miles) from Arcata (c. 17 200 pop), 74 km (46 miles) from Bayside (c. 17 100 pop), 82 km (51 miles) from McKinleyville (c. 15 200 pop), 49 km (30 miles) from Fortuna (c. 11 900 pop).

There are an estimated 130,000 minor earthquakes in the world each year. In the past 24 hours, there have been one, in the last 10 days four, in the past 30 days six and in the last 365 days fifty-eight earthquakes of magnitude 3.0 or greater that have been detected nearby. Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage.

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Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 28 km W of Petrolia, CA. This information comes from the USGS Earthquake Notification Service.

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Parameter	Value	Description
Magnitude	3.31 mb	The magnitude for the event.
Longitude	-124.6094971° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	40.3226662° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	19.88 km	Depth of the event in kilometers.
Place	28km W of Petrolia, CA	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2019-04-27 02:38:37	Time when the event occurred. UTC/GMT
Updated	2019-04-27 02:46:03	Time when the event was most recently updated. UTC/GMT
Timezone offset	-480	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	automatic	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	169	A number describing how significant the event is. Larger numbers indicate a more significant event.
Network	nc	The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources	,nc,	A comma-separated list of network contributors.
Number of Stations Used	37	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.207	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.16 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	249	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	nc73172710	Id of event.
Event Code	73172710	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,nc73172710,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake, 3.31 mag strikes near Petrolia in CA

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