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Minor earthquake: M2.87 quake has struck near Portola in California

Posted by admin on November 8, 2017 0 Comments

Earthquake location 39.7751656S, -120.6033325WA minor earthquake magnitude 2.87 (ml/mb) has occurred on Wednesday, 11 kilometers (7 miles) from Portola in California. Exact location of earthquake, -120.6033325° West, 39.7751656° North, depth 9.53 km. Id of earthquake: nc72921121. Event ids that are associated: nc72921121, nn00611864. The epicenter was at a depth of 9.53 km (6 miles). Global date and time of event UTC/GMT: 08/11/17 / 2017-11-08 13:10:14 / November 8, 2017 @ 1:10 pm. The temblor was picked up at 05:10:14 / 5:10 am (local time epicenter).

Country/countries that might be effected, United States (c. 310 233 000 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Sun Valley, Grass Valley, Reno. Epicenter of the earthquake was 73 km (45 miles) from Reno (c. 225 200 pop), 74 km (46 miles) from Sun Valley (c. 19 300 pop), 71 km (44 miles) from Susanville (c. 17 900 pop), 61 km (38 miles) from Truckee (c. 16 200 pop), 73 km (46 miles) from Grass Valley (c. 12 900 pop).

In the past 24 hours, there have been 0, in the last 10 days 0, in the past 30 days 0 and in the last 365 days nine earthquakes of magnitude 3.0 or greater that has struck near. Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage. Each year there are an estimated 1,300,000 minor quakes in the world.

Did you feel the quake?

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. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 11 km WSW of Portola, California. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 2.87 mb The magnitude for the event.
Longitude -120.6033325° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 39.7751656° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 9.53 km Depth of the event in kilometers.
Place 11km WSW of Portola, California Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2017-11-08 13:10:14 Time when the event occurred. UTC/GMT
Updated 2017-11-08 13:13:20 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 127 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,nn, A comma-separated list of network contributors.
Number of Stations Used 24 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.1082 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.09 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 85 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 nc72921121 Id of event.
Event Code 72921121 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,nc72921121,nn00611864, A comma-separated list of event ids that are associated to an event.

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