Minor earthquake, 3.6 mag has occurred near Petrolia in CA

A minor earthquake with magnitude 3.6 (ml/mb) was reported 12 kilometers (7 miles) from Petrolia in CA on Saturday. Global time and date of event 03/02/19 / 2019-02-03 01:38:24 / February 3, 2019 @ 1:38 am UTC/GMT. The 3.6-magnitude earthquake has occurred at 17:38:24 / 5:38 pm (local time epicenter). The epicenter was at a depth of 6.88 km (4 miles). All ids that are associated to the event: nc73139181. Unique identifier: nc73139181. Exact location, longitude -124.4218369° West, latitude 40.3180008° North, depth = 6.88 km.

Nearby country/countries that might be effected, United States (c. 310 233 000 pop). Earthquake epicenter was 58 km (36 miles) from Eureka (c. 27 200 pop), 67 km (42 miles) from Arcata (c. 17 200 pop), 66 km (41 miles) from Bayside (c. 17 100 pop), 75 km (47 miles) from McKinleyville (c. 15 200 pop), 38 km (24 miles) from Fortuna (c. 11 900 pop). Nearest cities/city/towns to hypocenter/epicentrum was McKinleyville, Arcata, Bayside (min 5000 pop).

Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. In the past 24 hours, there have been five, in the last 10 days six, in the past 30 days eleven and in the last 365 days fourty-six earthquakes of magnitude 3.0 or greater that have been detected in the same area. Each year there are an estimated 130,000 minor quakes in the world.

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. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 12 km W of Petrolia, CA. This information comes from the USGS Earthquake Notification Service.

More information

Parameter	Value	Description
Magnitude	3.6 mb	The magnitude for the event.
Longitude	-124.4218369° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	40.3180008° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	6.88 km	Depth of the event in kilometers.
Place	12km 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	2019-02-03 01:38:24	Time when the event occurred. UTC/GMT
Updated	2019-02-03 01:51:12	Time when the event was most recently updated. UTC/GMT
Timezone offset	-480	Timezone offset from UTC in minutes at the event epicenter.
Felt	1	The total number of felt reports
CDI	2	The maximum reported intensity for the event.
MMI	4.41	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	200	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	14	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.134	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.13 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	253	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	nc73139181	Id of event.
Event Code	73139181	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,nc73139181,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake, 3.6 mag has occurred near Petrolia in CA

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