Minor earthquake: M3.31 quake has struck near Parkfield in CA

A minor earthquake magnitude 3.31 (ml/mb) has occurred on Sunday, 16 kilometers (10 miles) from Parkfield in CA. Exact location of earthquake, -120.55982971191° West, 35.995998382568° North, depth 3.4100000858307 km. Event id: nc75161057. Ids that are associated to the earthquake: nc75161057. The earthquake was roughly at a depth of 3.4100000858307 km (2 miles). The temblor was reported at 06:11:18 / 6:11 am (local time epicenter). Exact time and date of event in UTC/GMT: 06/04/25 / 2025-04-06 06:11:18 / April 6, 2025 @ 6:11 am.

Epicenter of the event was 80 km (50 miles) from San Luis Obispo (c. 45 100 pop), 57 km (36 miles) from Atascadero (c. 28 300 pop), 43 km (27 miles) from Paso Robles (c. 27 200 pop), 78 km (48 miles) from Lemoore (c. 24 500 pop), 71 km (44 miles) from Greenfield (c. 16 300 pop). Nearest cities/city/towns to hypocenter/epicentrum was Los Osos, San Luis Obispo, Lemoore (min 5000 pop). Close country/countries that might be effected, United States (c. 310 233 000 pop).

Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. Each year there are an estimated 130,000 minor quakes in the world. In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days two and in the last 365 days thirty-two earthquakes of magnitude 3.0 or greater that has struck near.

How would you describe the shaking?

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, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 16 km NW of Parkfield, CA. This data comes from the USGS Earthquake Notification Service.

Atascadero CA Greenfield Lemoore Los Osos Parkfield Paso Robles San Luis Obispo United States

More information

Parameter	Value	Description
Magnitude	3.31 mb	The magnitude for the event.
Longitude	-120.55982971191° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	35.995998382568° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	3.4100000858307 km	Depth of the event in kilometers.
Place	16 km NW of Parkfield, CA	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-04-06 06:11:18	Time when the event occurred. UTC/GMT
Updated	2025-04-06 06:21:15	Time when the event was most recently updated. UTC/GMT
Timezone offset		Timezone offset from UTC in minutes at the event epicenter.
Felt	2	The total number of felt reports
CDI	2	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	169	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	61	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.02253	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.12 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	48	The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type	ml	The method or algorithm used to calculate the preferred magnitude for the event.
Event Type	earthquake	Type of seismic event.
Event ID	nc75161057	Id of event.
Event Code	75161057	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,nc75161057,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake: M3.31 quake has struck near Parkfield in CA

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