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Minor earthquake 2.89 mag, 50 km WNW of Petrolia, CA


Earthquake location 40.35950088501S, -124.87466430664WA minor earthquake with magnitude 2.89 (ml/mb) was detected on Friday, 50 kilometers (31 miles) from Petrolia in CA. The 2.89-magnitude earthquake was detected at 06:39:28 / 6:39 am (local time epicenter). Event ids that are associated to the earthquake: nc75208257. Id of event: nc75208257. The epicenter of the earthquake was roughly 12.470000267029 km (8 miles) below the earth’s surface. Exact time and date of event in UTC/GMT: 11/07/25 / 2025-07-11 06:39:28 / July 11, 2025 @ 6:39 am. Exact location of earthquake, -124.87466430664° West, 40.35950088501° North, depth 12.470000267029 km.

Close country/countries that might be effected, United States (c. 310 233 000 pop). The epicenter was 66 km (41 miles) from Fortuna (c. 11 900 pop). Nearest cities/city/villages to epicentrum/hypocenter was Fortuna (min 5000 pop).

Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage. In the past 24 hours, there have been one, in the last 10 days four, in the past 30 days eleven and in the last 365 days two hundred and ninety-three earthquakes of magnitude 3.0 or greater that have been detected nearby. Each year there are an estimated 1,300,000 minor earthquakes in the world.

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 data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 50 km WNW of Petrolia, CA.

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More information

Parameter Value Description
Magnitude 2.89 mb The magnitude for the event.
Longitude -124.87466430664° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 40.35950088501° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 12.470000267029 km Depth of the event in kilometers.
Place 50 km WNW 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 2025-07-11 06:39:28 Time when the event occurred. UTC/GMT
Updated 2025-07-11 06:41:14 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 128 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 48 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.4129 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.15 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 nc75208257 Id of event.
Event Code 75208257 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,nc75208257, A comma-separated list of event ids that are associated to an event.

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