Minor earthquake: M2.91 quake has struck near Petrolia in CA

A minor earthquake magnitude 2.91 (ml/mb) strikes 19 kilometers (12 miles) from Petrolia in CA on Tuesday. The temblor was picked up at 19:50:55 / 7:50 pm (local time epicenter). Global time and date of event 08/12/20 / 2020-12-08 19:50:55 / December 8, 2020 @ 7:50 pm UTC/GMT. Event ids that are associated to the earthquake: nc73495325. Id of event: nc73495325. The earthquake occurred at a depth of 19.08 km (12 miles). Exact location of event, longitude -124.4964981 West, latitude 40.2798347 North, depth = 19.08 km.

Close country/countries that might be effected, United States (c. 310 233 000 pop). Nearest cities/city/towns to hypocenter/epicentrum was Arcata, Bayside, Eureka (min 5000 pop). Epicenter of the event was 65 km (40 miles) from Eureka (c. 27 200 pop), 74 km (46 miles) from Arcata (c. 17 200 pop), 72 km (45 miles) from Bayside (c. 17 100 pop), 46 km (28 miles) from Fortuna (c. 11 900 pop).

Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. 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 fourty-nine 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.

Did you feel the quake?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage at your home, city and country. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 19 km WSW of Petrolia, CA.

More information

Parameter	Value	Description
Magnitude	2.91 mb	The magnitude for the event.
Longitude	-124.4964981° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	40.2798347° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	19.08 km	Depth of the event in kilometers.
Place	19km WSW 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	2020-12-08 19:50:55	Time when the event occurred. UTC/GMT
Updated	2020-12-08 19:55:07	Time when the event was most recently updated. UTC/GMT
Timezone offset		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	130	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	0.1779	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.1 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	251	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	nc73495325	Id of event.
Event Code	73495325	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,nc73495325,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake: M2.91 quake has struck near Petrolia in CA

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