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Minor earthquake 2.81 mag, 6 km W of Cobb, CA


Earthquake location 38.8261681S, -122.7898331WA minor earthquake magnitude 2.81 (ml/mb) strikes 6 kilometers (4 miles) from Cobb in CA on Thursday. The epicenter was at a depth of 1.37 km (1 miles). The temblor was detected at 02:33:25 / 2:33 am (local time epicenter). Event ids that are associated to the earthquake: nc73175735. Id of event: nc73175735. Exact location of event, longitude -122.7898331 West, latitude 38.8261681 North, depth = 1.37 km. Exact time and date of earthquake 02/05/19 / 2019-05-02 10:33:25 / May 2, 2019 @ 10:33 am UTC/GMT.

Nearby country/countries that might be effected, United States (c. 310 233 000 pop). Epicenter of the earthquake was 43 km (27 miles) from Santa Rosa (c. 167 800 pop), 73 km (46 miles) from Napa (c. 76 900 pop), 67 km (42 miles) from Petaluma (c. 57 900 pop), 55 km (34 miles) from Rohnert Park (c. 41 000 pop), 31 km (19 miles) from Windsor (c. 26 800 pop). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Napa, Petaluma, Williams.

In the past 24 hours, there have been one, in the last 10 days six, in the past 30 days ten and in the last 365 days thirty-nine earthquakes of magnitude 3.0 or greater that have been detected in the same area. Every year there are an estimated 1,300,000 minor earthquakes in the world. Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage.

Did you feel it?

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: 6 km W of Cobb, CA.

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More information

Parameter Value Description
Magnitude 2.81 mb The magnitude for the event.
Longitude -122.7898331° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 38.8261681° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 1.37 km Depth of the event in kilometers.
Place 6km W of Cobb, CA Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2019-05-02 10:33:25 Time when the event occurred. UTC/GMT
Updated 2019-05-02 10:37:53 Time when the event was most recently updated. UTC/GMT
Timezone offset -480 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 121 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 43 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 0.05 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 40 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type md The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID nc73175735 Id of event.
Event Code 73175735 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,nc73175735, A comma-separated list of event ids that are associated to an event.

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