Minor earthquake, 3.79 mag strikes near Rio Dell in CA

A minor earthquake with magnitude 3.79 (ml/mb) was reported 11 kilometers (7 miles) from Rio Dell in CA on Friday. Exact time and date of earthquake 18/12/20 / 2020-12-18 16:13:42 / December 18, 2020 @ 4:13 pm UTC/GMT. The temblor was detected at 16:13:42 / 4:13 pm (local time epicenter). Id of earthquake: nc73499875. Event ids that are associated: nc73499875. The epicenter of the earthquake was roughly 23.16 km (14 miles) below the earth’s surface. Exact location of earthquake, -124.2089996° West, 40.4345016° North, depth 23.16 km.

Nearest cities/city/villages to epicentrum/hypocenter was McKinleyville, Arcata, Bayside (min 5000 pop). Nearby country/countries that might be effected, United States (c. 310 233 000 pop). Epicenter of the event was 41 km (26 miles) from Eureka (c. 27 200 pop), 49 km (31 miles) from Arcata (c. 17 200 pop), 47 km (29 miles) from Bayside (c. 17 100 pop), 58 km (36 miles) from McKinleyville (c. 15 200 pop), 19 km (12 miles) from Fortuna (c. 11 900 pop).

Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. 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 four, in the past 30 days seven and in the last 365 days fifty-four earthquakes of magnitude 3.0 or greater that has occurred nearby.

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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: 11 km SW of Rio Dell, CA.

More information

Parameter	Value	Description
Magnitude	3.79 mb	The magnitude for the event.
Longitude	-124.2089996° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	40.4345016° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	23.16 km	Depth of the event in kilometers.
Place	11km SW of Rio Dell, CA	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2020-12-18 16:13:42	Time when the event occurred. UTC/GMT
Updated	2020-12-18 16:17:37	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	4.19	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	221	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	18	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.06955	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	99	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	nc73499875	Id of event.
Event Code	73499875	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,nc73499875,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake, 3.79 mag strikes near Rio Dell in CA

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