Minor earthquake: M3.47 quake has struck near Petrolia in CA

A minor earthquake magnitude 3.47 (ml/mb) has occurred on Tuesday, 9 kilometers (6 miles) from Petrolia in CA. Exact location of earthquake, -124.3733368° West, 40.2818336° North, depth 19.8 km. The temblor was reported at 03:25:08 / 3:25 am (local time epicenter). The epicenter of the earthquake was roughly 19.8 km (12 miles) below the earth’s surface. Global time and date of event 12/01/21 / 2021-01-12 03:25:08 / January 12, 2021 @ 3:25 am UTC/GMT. Id of earthquake: nc73509880. Event ids that are associated: nc73509880.

Country/countries that might be effected, United States (c. 310 233 000 pop). Nearest cities/city/towns to hypocenter/epicentrum was McKinleyville, Arcata, Bayside (min 5000 pop). Earthquake epicenter was 60 km (38 miles) from Eureka (c. 27 200 pop), 69 km (43 miles) from Arcata (c. 17 200 pop), 68 km (42 miles) from Bayside (c. 17 100 pop), 77 km (48 miles) from McKinleyville (c. 15 200 pop), 40 km (25 miles) from Fortuna (c. 11 900 pop).

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-four 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. Each year there are an estimated 130,000 minor earthquakes in the world.

How would you describe the shaking?

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. 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: 9 km WSW of Petrolia, CA.

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Parameter	Value	Description
Magnitude	3.47 mb	The magnitude for the event.
Longitude	-124.3733368° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	40.2818336° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	19.8 km	Depth of the event in kilometers.
Place	9km 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	2021-01-12 03:25:08	Time when the event occurred. UTC/GMT
Updated	2021-01-12 03:28:32	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	2.92	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	185	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	15	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.08588	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.08 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	234	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	nc73509880	Id of event.
Event Code	73509880	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,nc73509880,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake: M3.47 quake has struck near Petrolia in CA

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