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Minor earthquake 2.87 mag, 26 km W of Petrolia, CA

Earthquake location 40.2910004S, -124.5836639WA minor earthquake with magnitude 2.87 (ml/mb) was detected on Friday, 26 kilometers (16 miles) from Petrolia in CA. Exact location of event, depth 18.34 km, -124.5836639° West, 40.2910004° North. Exact time and date of event in UTC/GMT: 19/07/19 / 2019-07-19 17:41:17 / July 19, 2019 @ 5:41 pm. Unique identifier: nc73229031. Ids that are associated to the event: nc73229031. The earthquake was roughly at a depth of 18.34 km (11 miles). The temblor was reported at 09:41:17 / 9:41 am (local time epicenter).

Epicenter of the event was 67 km (42 miles) from Eureka (c. 27 200 pop), 77 km (48 miles) from Arcata (c. 17 200 pop), 75 km (47 miles) from Bayside (c. 17 100 pop), 50 km (31 miles) from Fortuna (c. 11 900 pop). Nearest cities/city/villages to epicentrum/hypocenter was Arcata, Bayside, Eureka (min 5000 pop). Country/countries that might be effected, United States (c. 310 233 000 pop).

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 fifty-six earthquakes of magnitude 3.0 or greater that has occurred nearby. 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 it?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city 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: 26 km W of Petrolia, CA.

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More information

Parameter Value Description
Magnitude 2.87 mb The magnitude for the event.
Longitude -124.5836639° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 40.2910004° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 18.34 km Depth of the event in kilometers.
Place 26km W of Petrolia, CA Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2019-07-19 17:41:17 Time when the event occurred. UTC/GMT
Updated 2019-07-19 17:47:04 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, A comma-separated list of network contributors.
Number of Stations Used 18 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.08 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 255 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 nc73229031 Id of event.
Event Code 73229031 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,nc73229031, A comma-separated list of event ids that are associated to an event.

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