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Minor World Earthquakes Magnitude -3.9

Minor earthquake 2.81 mag, 6 km NW of The Geysers, California

Posted by admin on April 21, 2015 0 Comments

Earthquake location 38.8206673S, -122.810997WA minor earthquake magnitude 2.81 (mg/mb) has striked on Tuesday, 6 kilometers (4 miles) from The Geysers in California. The temblor was reported at 09:34:41 / 9:34 am (local time epicenter) at a depth of 3.36 km (2 miles). Global time of event 21/04/15 / 2015-04-21 16:34:41 / April 21, 2015 @ 4:34 pm UTC/GMT. A tsunami warning has not been issued, according to the U.S. Geological Survey. Exact location of event, longitude -122.810997 West, latitude 38.8206673 North, depth 3.36 km, unique identifier, nc72432140.

Close countries, United States (c. 310 233 000 pop). The epicenter was 43 km (27 miles) from Santa Rosa (c. 167 800 pop), 74 km (46 miles) from Napa (c. 76 900 pop), 67 km (42 miles) from Petaluma (c. 57 900 pop), 54 km (34 miles) from Rohnert Park (c. 41 000 pop), 30 km (19 miles) from Windsor (c. 26 800 pop). Nearest city, towns to epicentrum/hypocenter was Napa, Williams, Petaluma.

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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: 6 km NW of The Geysers, California.


More information

Parameter Value Description
Magnitude 2.81 mb The magnitude for the event.
Longitude -122.810997° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 38.8206673° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 3.36 km Depth of the event in kilometers.
Place 6km NW of The Geysers, California Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2015-04-21 16:34:41 Time when the event occurred. UTC/GMT
Updated 2015-04-21 16:43:06 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 54 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.002818 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.03 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 27 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 nc72432140 Id of event.
Event Code 72432140 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,nc72432140, A comma-separated list of event ids that are associated to an event.

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