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Minor earthquake: M2.81 quake has struck near Truckee in CA

Earthquake location 39.4381676S, -120.2928314WA minor earthquake magnitude 2.81 (ml/mb) has occurred on Tuesday, 15 kilometers (9 miles) from Truckee in CA. Id of earthquake: nc73428961. Event ids that are associated: nc73428961. Exact location of earthquake, -120.2928314° West, 39.4381676° North, depth 0.11 km. Date and time of earthquake in UTC/GMT: 21/07/20 / 2020-07-21 11:42:54 / July 21, 2020 @ 11:42 am. The epicenter was at a depth of 0.11 km (0 miles). The temblor was detected at 11:42:54 / 11:42 am (local time epicenter).

Nearest cities/city/villages to epicentrum/hypocenter was Alta Sierra, Gardnerville, Grass Valley (min 5000 pop). Country/countries that might be effected, United States (c. 310 233 000 pop). Earthquake epicenter was 42 km (26 miles) from Reno (c. 225 200 pop), 48 km (30 miles) from Sparks (c. 90 300 pop), 55 km (34 miles) from Carson City (c. 55 300 pop), 62 km (39 miles) from South Lake Tahoe (c. 21 400 pop), 48 km (30 miles) from Sun Valley (c. 19 300 pop).

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

Did you feel it?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 15 km NW of Truckee, CA.

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More information

Parameter Value Description
Magnitude 2.81 mb The magnitude for the event.
Longitude -120.2928314° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 39.4381676° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 0.11 km Depth of the event in kilometers.
Place 15km NW of Truckee, CA Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2020-07-21 11:42:54 Time when the event occurred. UTC/GMT
Updated 2020-07-21 11:44:28 Time when the event was most recently updated. UTC/GMT
Timezone offset 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 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 14 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.1397 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 71 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 nc73428961 Id of event.
Event Code 73428961 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,nc73428961, A comma-separated list of event ids that are associated to an event.

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