Minor earthquake, 2.81 mag was detected near Petrolia in CA

A minor earthquake with magnitude 2.81 (ml/mb) was detected on Tuesday, 84 km W of Petrolia, CA (52 miles). Exact time and date of earthquake 30/07/19 / 2019-07-30 23:22:38 / July 30, 2019 @ 11:22 pm UTC/GMT. The 2.81-magnitude earthquake has occurred at 15:22:38 / 3:22 pm (local time epicenter). Unique identifier: nc73238851. Ids that are associated to the event: nc73238851. The earthquake occurred at a depth of 23.97 km (15 miles) below the earth’s surface. Exact location of event, longitude -125.2731667 West, latitude 40.3903333 North, depth = 23.97 km.

In the past 24 hours, there have been 0, in the last 10 days one, in the past 30 days four and in the last 365 days fifty-three earthquakes of magnitude 3.0 or greater that has occurred nearby. Each year there are an estimated 1,300,000 minor quakes in the world. Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage.

Questions or comments?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity 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: 84 km W of Petrolia, CA.

CA Petrolia

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Parameter	Value	Description
Magnitude	2.81 mb	The magnitude for the event.
Longitude	-125.2731667° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	40.3903333° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	23.97 km	Depth of the event in kilometers.
Place	84km 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	2019-07-30 23:22:38	Time when the event occurred. UTC/GMT
Updated	2019-07-31 00:20:34	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	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	121	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	16	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.7185	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.15 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	md	The method or algorithm used to calculate the preferred magnitude for the event.
Event Type	earthquake	Type of seismic event.
Event ID	nc73238851	Id of event.
Event Code	73238851	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,nc73238851,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake, 2.81 mag was detected near Petrolia in CA

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