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Minor earthquake: M3.9785 quake has struck near Willits in California

Earthquake location 39.3862S, -123.2268WA minor earthquake magnitude 3.9785 (ml/mb) has occurred on Wednesday, 11 kilometers (7 miles) from Willits in California. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Exact location of earthquake, longitude -123.2268 West, latitude 39.3862 North, depth = 8 km. The 3.9785-magnitude earthquake has occurred at 01:59:33 / 1:59 am (local time epicenter). The epicenter of the earthquake was roughly 8 km (5 miles) below the earth’s surface. Global time and date of event 19/08/20 / 2020-08-19 01:59:33 / August 19, 2020 @ 1:59 am UTC/GMT. Id of earthquake: ew1597802373. Event ids that are associated: ew1597802373.

Earthquake epicenter was 26 km (16 miles) from Ukiah (c. 16 100 pop), 70 km (44 miles) from Clearlake (c. 15 300 pop), 67 km (42 miles) from Cloverdale (c. 8 600 pop), 50 km (31 miles) from Fort Bragg (c. 7 300 pop), 90 km (56 miles) from Willows (c. 6 200 pop), 86 km (54 miles) from Hidden Valley Lake (c. 5 600 pop). Nearby country/countries that might be effected, United States (c. 310 233 000 pop). Nearest cities/city/towns to hypocenter/epicentrum was Willows, Hidden Valley Lake, Clearlake (min 5000 pop).

There are an estimated 130,000 minor quakes in the world each year. In the past 24 hours, there have been six, in the last 10 days eight, in the past 30 days eight and in the last 365 days thirty-nine earthquakes of magnitude 3.0 or greater that has occurred nearby. Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage.

Did you feel anything?

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. 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: 11 km ESE of Willits, California.

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More information

Parameter Value Description
Magnitude 3.9785 mb The magnitude for the event.
Longitude -123.2268° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 39.3862° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 8 km Depth of the event in kilometers.
Place 11 km ESE of Willits, California Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2020-08-19 01:59:33 Time when the event occurred. UTC/GMT
Updated 2020-08-19 01:59:40 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 244 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network ew The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,ew, A comma-separated list of network contributors.
Number of Stations Used 4 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 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 ew1597802373 Id of event.
Event Code 1597802373 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ew1597802373, A comma-separated list of event ids that are associated to an event.

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