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Light earthquake, 4.01 mag was detected near Willits in CA

Earthquake location 39.3600006S, -123.2450027WA light earthquake with magnitude 4.01 (ml/mb) was reported 11 kilometers (7 miles) from Willits in CA on Wednesday. Global date and time of event UTC/GMT: 19/08/20 / 2020-08-19 00:55:23 / August 19, 2020 @ 12:55 am. Exact location of event, longitude -123.2450027 West, latitude 39.3600006 North, depth = 7.49 km. All ids that are associated to the event: ew1597798523, nc73446356, at00qfad8a. Unique identifier: nc73446356. The earthquake occurred at a depth of 7.49 km (5 miles) below the earth’s surface. A tsunami warning has been issued near Willits in CA (Does not indicate if a tsunami actually did or will exist). The temblor was reported at 00:55:23 / 12:55 am (local time epicenter).

Event epicenter was 24 km (15 miles) from Ukiah (c. 16 100 pop), 70 km (43 miles) from Clearlake (c. 15 300 pop), 89 km (56 miles) from Healdsburg (c. 11 300 pop), 65 km (40 miles) from Cloverdale (c. 8 600 pop), 49 km (30 miles) from Fort Bragg (c. 7 300 pop), 85 km (53 miles) from Hidden Valley Lake (c. 5 600 pop). Country/countries that might be effected, United States (c. 310 233 000 pop). Nearest cities/city/villages to epicentrum/hypocenter was Healdsburg, Hidden Valley Lake, Clearlake (min 5000 pop).

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

Did you feel the quake?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 11 km ESE of Willits, CA.

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More information

Parameter Value Description
Magnitude 4.01 mb The magnitude for the event.
Longitude -123.2450027° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 39.3600006° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 7.49 km Depth of the event in kilometers.
Place 11km ESE of Willits, CA Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2020-08-19 00:55:23 Time when the event occurred. UTC/GMT
Updated 2020-08-19 01:01:03 Time when the event was most recently updated. UTC/GMT
Timezone offset Timezone offset from UTC in minutes at the event epicenter.
Felt 7 The total number of felt reports
CDI 3.8 The maximum reported intensity for the event.
MMI 5.49 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 automatic Indicates whether the event has been reviewed by a human.
Tsunami 1 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 250 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 ,ew,nc,at, A comma-separated list of network contributors.
Number of Stations Used 40 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.06634 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.09 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 33 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 nc73446356 Id of event.
Event Code 73446356 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ew1597798523,nc73446356,at00qfad8a, A comma-separated list of event ids that are associated to an event.

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