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Minor earthquake, 2.81 mag strikes near Cobb in California

Posted by admin on April 13, 2016 0 Comments

Earthquake location 38.8421669S, -122.8233337WA minor earthquake magnitude 2.81 (ml/mb) has occurred on Wednesday, 8 kilometers (5 miles) from Cobb in California. The earthquake was roughly at a depth of 1.74 km (1 miles). Exact time and date of event in UTC/GMT: 13/04/16 / 2016-04-13 16:18:47 / April 13, 2016 @ 4:18 pm. The 2.81-magnitude earthquake was detected at 09:18:47 / 9:18 am (local time epicenter). Event ids that are associated to the earthquake: nc72621695. Id of event: nc72621695. Exact location of earthquake, -122.8233337° West, 38.8421669° North, depth 1.74 km.

The epicenter was 46 km (28 miles) from Santa Rosa (c. 167 800 pop), 77 km (48 miles) from Napa (c. 76 900 pop), 70 km (43 miles) from Petaluma (c. 57 900 pop), 57 km (35 miles) from Rohnert Park (c. 41 000 pop), 33 km (20 miles) from Windsor (c. 26 800 pop). Country/countries that might be effected, United States (c. 310 233 000 pop). Nearest cities/city/villages to epicentrum/hypocenter was Napa, Petaluma, Sonoma (min 5000 pop).

Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage. There are an estimated 1,300,000 minor earthquakes in the world each year. In the past 24 hours, there have been 0, in the last 10 days one, in the past 30 days six and in the last 365 days fourty-three earthquakes of magnitude 3.0 or greater that has occurred nearby.

Did you feel it?

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 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: 8 km WNW of Cobb, California.

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More information

Parameter Value Description
Magnitude 2.81 mb The magnitude for the event.
Longitude -122.8233337° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 38.8421669° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 1.74 km Depth of the event in kilometers.
Place 8km 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 2016-04-13 16:18:47 Time when the event occurred. UTC/GMT
Updated 2016-04-13 16:20:46 Time when the event was most recently updated. UTC/GMT
Timezone offset -420 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 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 52 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.01014 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 44 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 nc72621695 Id of event.
Event Code 72621695 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,nc72621695, A comma-separated list of event ids that are associated to an event.

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