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Light earthquake: M4 quake has struck near San Juan Bautista in California

Posted by admin on November 27, 2025 0 Comments

Earthquake location 36.7849S, -121.5381WA light earthquake with magnitude 4 (ml/mb) was reported 6 kilometers (4 miles) from San Juan Bautista in California on Thursday. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Date and time of earthquake in UTC/GMT: 27/11/25 / 2025-11-27 20:48:48 / November 27, 2025 @ 8:48 pm. The temblor was reported at 20:48:48 / 8:48 pm (local time epicenter). Exact location, longitude -121.5381° West, latitude 36.7849° North, depth = 9 km. The earthquake occurred at a depth of 9 km (6 miles). Event id: ew1764276530. Ids that are associated to the earthquake: ew1764276530.

Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Los Altos Hills, Patterson, Los Altos. Close country/countries, United States (c. 310 233 000 pop) (That might be effected). The epicenter was 69 km (43 miles) from San Jose (c. 945 900 pop), 16 km (10 miles) from Salinas (c. 150 400 pop), 79 km (49 miles) from Sunnyvale (c. 140 100 pop), 73 km (46 miles) from Santa Clara (c. 116 500 pop), 83 km (51 miles) from Mountain View (c. 74 100 pop), 79 km (49 miles) from Milpitas (c. 66 800 pop).

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 six, in the past 30 days seven and in the last 365 days fifty-three earthquakes of magnitude 3.0 or greater that have been detected in the same area. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage.

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. 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: 6 km S of San Juan Bautista, California.

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More information

Parameter Value Description
Magnitude 4 mb The magnitude for the event.
Longitude -121.5381° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 36.7849° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 9 km Depth of the event in kilometers.
Place 6 km S of San Juan Bautista, California Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2025-11-27 20:48:48 Time when the event occurred. UTC/GMT
Updated 2025-11-27 20:48:57 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 246 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network ew The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,ew, A comma-separated list of network contributors.
Number of Stations Used 26 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 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 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 ew1764276530 Id of event.
Event Code 1764276530 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ew1764276530, A comma-separated list of event ids that are associated to an event.

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