Light earthquake, 4.33 mag strikes near Petrolia in CA

A light earthquake magnitude 4.33 (ml/mb) has struck on Sunday, 83 km W of Petrolia, CA (52 miles). The earthquake was roughly at a depth of 4.33 km (3 miles). Exact location, longitude -125.2608337° West, latitude 40.4161682° North, depth = 4.33 km. Id of earthquake: nc73512440. Event ids that are associated: nc73512440. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The temblor was reported at 06:25:17 / 6:25 am (local time epicenter). Date and time of earthquake in UTC/GMT: 17/01/21 / 2021-01-17 06:25:17 / January 17, 2021 @ 6:25 am.

Each year there are an estimated 13,000 light quakes in the world. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been one, in the last 10 days five, in the past 30 days eight and in the last 365 days fifty-eight earthquakes of magnitude 3.0 or greater that has struck near.

Questions or comments?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. 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: 83 km W of Petrolia, CA.

CA Petrolia

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Parameter	Value	Description
Magnitude	4.33 mb	The magnitude for the event.
Longitude	-125.2608337° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	40.4161682° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	4.33 km	Depth of the event in kilometers.
Place	83km 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	2021-01-17 06:25:17	Time when the event occurred. UTC/GMT
Updated	2021-01-17 06:32:25	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	2.2	The maximum estimated instrumental intensity for the event.
Alert Level	green	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	288	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	70	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.7072	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.4 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	284	The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type	mw	The method or algorithm used to calculate the preferred magnitude for the event.
Event Type	earthquake	Type of seismic event.
Event ID	nc73512440	Id of event.
Event Code	73512440	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,nc73512440,	A comma-separated list of event ids that are associated to an event.

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Light earthquake, 4.33 mag strikes near Petrolia in CA

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