Minor earthquake, 3.42 mag was detected near Petrolia in CA

A minor earthquake with magnitude 3.42 (ml/mb) was detected on Sunday, 7 kilometers (4 miles) from Petrolia in CA. Exact location of earthquake, longitude -124.2091675 West, latitude 40.3470001 North, depth = 28.51 km. Exact time and date of event in UTC/GMT: 18/10/20 / 2020-10-18 07:01:57 / October 18, 2020 @ 7:01 am. The earthquake occurred at a depth of 28.51 km (18 miles). Id of earthquake: nc73472226. Event ids that are associated: nc73472226. The temblor was reported at 07:01:57 / 7:01 am (local time epicenter).

Closest city/cities/towns to epicentrum/hypocenter was McKinleyville, Arcata, Bayside (min 5000 pop). Earthquake epicenter was 51 km (32 miles) from Eureka (c. 27 200 pop), 59 km (37 miles) from Arcata (c. 17 200 pop), 56 km (35 miles) from Bayside (c. 17 100 pop), 67 km (42 miles) from McKinleyville (c. 15 200 pop), 28 km (18 miles) from Fortuna (c. 11 900 pop). Close country/countries, United States (c. 310 233 000 pop) (That might be effected).

There are an estimated 130,000 minor quakes in the world each year. In the past 24 hours, there have been one, in the last 10 days two, in the past 30 days five and in the last 365 days fifty earthquakes of magnitude 3.0 or greater that has struck near. Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage.

How would you describe the shaking?

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: 7 km ENE of Petrolia, CA.

More information

Parameter	Value	Description
Magnitude	3.42 mb	The magnitude for the event.
Longitude	-124.2091675° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	40.3470001° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	28.51 km	Depth of the event in kilometers.
Place	7km ENE 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	2020-10-18 07:01:57	Time when the event occurred. UTC/GMT
Updated	2020-10-18 07:07:05	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	180	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	19	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.07251	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.12 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	82	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	nc73472226	Id of event.
Event Code	73472226	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,nc73472226,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake, 3.42 mag was detected near Petrolia in CA

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