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Minor earthquake: M2.75 quake strikes near Cobb in California



Earthquake location 38.8359985S, -122.8041687WA minor earthquake magnitude 2.75 (mg/mb) has striked on Monday, 7 kilometers (4 miles) from Cobb in California. The temblor was reported at 02:45:11 / 2:45 am (local time epicenter) at a depth of 3.21 km (2 miles). Global time of event 2015-01-19 10:45:11 UTC/GMT. A tsunami warning has not been issued, according to the U.S. Geological Survey. Exact location of event, longitude -122.8041687 West, latitude 38.8359985 North, depth 3.21 km.

Close countries, United States (c. 310 233 000 pop). The epicenter was 45 km (28 miles) from Santa Rosa (c. 167 800 pop), 75 km (47 miles) from Napa (c. 76 900 pop), 69 km (43 miles) from Petaluma (c. 57 900 pop), 56 km (35 miles) from Rohnert Park (c. 41 000 pop), 32 km (20 miles) from Windsor (c. 26 800 pop). Nearest city, towns to epicentrum/hypocenter was Napa, Petaluma, Sonoma.

Did you feel it?

Leave a comment or report about shaking, activity and damage at your home, city and country. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded in: 7 km WNW of Cobb, California.



More information

Parameter Value Description
Magnitude 2.75 mb The magnitude for the event.
Longitude -122.8041687° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 38.8359985° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 3.21 km Depth of the event in kilometers.
Place 7km WNW of Cobb, California Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2015-01-19 10:45:11 Time when the event occurred. UTC/GMT
Updated 2015-01-19 10:49:04 Time when the event was most recently updated. UTC/GMT
Timezone offset -480 Timezone offset from UTC in minutes at the event epicenter.
Felt 0 The total number of felt reports
CDI 1 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 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 116 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 41 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.02883 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.04 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 106 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 nc72383111 Id of event.
Event Code 72383111 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS nc72383111 A comma-separated list of event ids that are associated to an event.

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