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San Ramon Earthquake of 20 Dec 2025

3.9 MW, 18:31:54.870 PST, Coordinates: 37.7472, -121.9455 Depth: 10.0 km
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Last Update: 2025-12-20 20:22 (Pacific)


Station


Code/ID


Network
Distance (km)
Horiz  Apk (g)

View

Epic. Fault
Groundsort icon

Struct.

San Ramon - Pine Valley & Alcosta

 57307

CGSCalifornia Strong Motion Instrumentation Program

0.9

--

0.033

--

Pleasanton - Owens & Oracle #1

 57451

CGSCalifornia Strong Motion Instrumentation Program

7.3

--

0.030

--

Hayward - Hwy 580/238 Interchange Bridge

 58658

CGSCalifornia Strong Motion Instrumentation Program

14.9

--

0.020

0.020

Castro Valley - Villareal & Clement

 58340

CGSCalifornia Strong Motion Instrumentation Program

8.1

--

0.018

--

Pleasanton - 5-Story Office Building 1

 57448

CGSCalifornia Strong Motion Instrumentation Program

7.1

--

0.015

0.029

Pleasanton - Owens & Oracle #2

 57452

CGSCalifornia Strong Motion Instrumentation Program

6.9

--

0.015

--

Hayward - I580/238 West Geotech Array

 58487

CGSCalifornia Strong Motion Instrumentation Program

15.7

--

0.013

--

Alamo - I680 & Stone Valley

 58443

CGSCalifornia Strong Motion Instrumentation Program

13.5

--

0.012

--

Castro Valley - Crow Canyon & Heyer

 58350

CGSCalifornia Strong Motion Instrumentation Program

10.7

--

0.012

--

San Ramon - Bollinger & Crow Canyon Rds

 57444

CGSCalifornia Strong Motion Instrumentation Program

5.1

--

0.012

--

Hayward - CSUH Stadium Grounds

 58219

CGSCalifornia Strong Motion Instrumentation Program

14.3

--

0.012

--

San Lorenzo - Hesperian & Paseo Grande

 58346

CGSCalifornia Strong Motion Instrumentation Program

17.6

--

0.010

--

Hayward - Meekland & Blossom

 58723

CGSCalifornia Strong Motion Instrumentation Program

16.6

--

0.008

--

Walnut Creek - 3-story Hospital

 58199

CGSCalifornia Strong Motion Instrumentation Program

18.9

--

0.006

0.019

Hayward - BART Station Grounds A

 58653

CGSCalifornia Strong Motion Instrumentation Program

15.1

--

0.006

--

Dublin - I580 & Inspiration

 57432

CGSCalifornia Strong Motion Instrumentation Program

5.1

--

0.006

--

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