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Minor earthquake 2.83 mag, 1 km NW of The Geysers, California


Earthquake location 38.7895012S, -122.7716675WA minor earthquake magnitude 2.83 (ml/mb) has struck on Thursday, 1 kilometers (1 miles) from The Geysers in California. Exact location of event, longitude -122.7716675 West, latitude 38.7895012 North, depth = 1.87 km. The earthquake occurred at a depth of 1.87 km (1 miles) below the earth’s surface. The 2.83-magnitude earthquake was detected at 21:54:47 / 9:54 pm (local time epicenter). Id of earthquake: nc72571871. Event ids that are associated: nc72571871. Date and time of earthquake in UTC/GMT: 25/12/15 / 2015-12-25 05:54:47 / December 25, 2015 @ 5:54 am.

Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Winters, Napa, Williams. Nearby country/countries, United States (c. 310 233 000 pop) (That might be effected). Epicenter of the event was 39 km (24 miles) from Santa Rosa (c. 167 800 pop), 69 km (43 miles) from Napa (c. 76 900 pop), 63 km (39 miles) from Petaluma (c. 57 900 pop), 50 km (31 miles) from Rohnert Park (c. 41 000 pop), 27 km (17 miles) from Windsor (c. 26 800 pop).

Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage. Each year there are an estimated 1,300,000 minor earthquakes in the world. In the past 24 hours, there have been two, in the last 10 days two, in the past 30 days three and in the last 365 days fourty earthquakes of magnitude 3.0 or greater that has struck near.

How would you describe the shaking?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home and country. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 1 km NW of The Geysers, California.

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More information

Parameter Value Description
Magnitude 2.83 mb The magnitude for the event.
Longitude -122.7716675° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 38.7895012° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 1.87 km Depth of the event in kilometers.
Place 1km 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 2015-12-25 05:54:47 Time when the event occurred. UTC/GMT
Updated 2015-12-25 05:59:05 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 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 123 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 0.01322 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.06 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 34 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 nc72571871 Id of event.
Event Code 72571871 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,nc72571871, A comma-separated list of event ids that are associated to an event.

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