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Earthquake breaking news, Light World Earthquakes Magnitude 4-4.9

Light earthquake 4.1 mag, 39 km WNW of Petrolia, CA


Earthquake location 40.325832366943S, -124.74600219727WA light earthquake magnitude 4.1 (ml/mb) has occurred on Sunday, 39 kilometers (24 miles) from Petrolia in CA. Date and time of earthquake in UTC/GMT: 25/05/25 / 2025-05-25 09:56:35 / May 25, 2025 @ 9:56 am. Unique identifier: nc75186201. Ids that are associated to the event: nc75186201. Exact location of event, longitude -124.74600219727 West, latitude 40.325832366943 North, depth = 2.3399999141693 km. The 4.1-magnitude earthquake was detected at 09:56:35 / 9:56 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). The epicenter of the earthquake was roughly 2.3399999141693 km (1 miles) below the earth’s surface.

Nearest cities/city/villages to epicentrum/hypocenter was McKinleyville, Arcata, Bayside (min 5000 pop). Earthquake epicenter was 72 km (45 miles) from Eureka (c. 27 200 pop), 82 km (51 miles) from Arcata (c. 17 200 pop), 81 km (51 miles) from Bayside (c. 17 100 pop), 88 km (55 miles) from McKinleyville (c. 15 200 pop), 58 km (36 miles) from Fortuna (c. 11 900 pop). Nearby country/countries that might be effected, United States (c. 310 233 000 pop).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. Every year there are an estimated 13,000 light earthquakes in the world. In the past 24 hours, there have been one, in the last 10 days five, in the past 30 days eight and in the last 365 days two hundred and seventy-two earthquakes of magnitude 3.0 or greater that has struck near.

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. 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: 39 km WNW of Petrolia, CA.

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More information

Parameter Value Description
Magnitude 4.1 mb The magnitude for the event.
Longitude -124.74600219727° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 40.325832366943° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 2.3399999141693 km Depth of the event in kilometers.
Place 39 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 2025-05-25 09:56:35 Time when the event occurred. UTC/GMT
Updated 2025-05-25 10:04:23 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 2.152 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 reviewed 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 259 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 55 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.326 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.26 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 248 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mw The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID nc75186201 Id of event.
Event Code 75186201 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,nc75186201, A comma-separated list of event ids that are associated to an event.

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