QuakeIndex

Every recorded earthquake within 30 km

Earthquakes near Rossmoor, CA

M 3.2

Latest: 12:44 am PDT on 9 October 2026 · 9 km (5 mi) W of Rossmoor, CA

The most recent earthquake near Rossmoor was M 3.2, 9 km (5 mi) W of Rossmoor, CA, at 12:44 am PDT on 9 October 2026. 879 people reported feeling it to USGS.

Within 30 km since 2016
713 earthquakes of M1.5 or more
In the last 12 months
88
Largest since 2016
M 4.5 on 18 September 2020, 28 km (17 mi) N of Rossmoor, CA
Reported felt
335 of them have felt reports to USGS

USGS · feed checked · newest earthquake in our database · this page

The last 30 days

Sep 10 Sep 25 Oct 9
Each mark is a day's largest quake within range; its size is the magnitude. The shaded band is the magnitude a day's largest quake normally falls in here (M1.6–M2.1), from this place's own 10-year record. A mark above the band is a bigger day than usual.

The latest 50

  1. 3.2 9 km (5 mi) W of Rossmoor, CA · felt by 879
  2. 2.2 23 km (14 mi) SE of Rossmoor, CA · felt by 26
  3. 1.6 14 km (8 mi) NW of Rossmoor, CA
  4. 2.9 14 km (9 mi) NW of Rossmoor, CA · felt by 516
  5. 1.6 22 km (14 mi) NE of Rossmoor, CA
  6. 1.7 26 km (16 mi) NW of Rossmoor, CA
  7. 1.6 28 km (17 mi) NW of Rossmoor, CA
  8. 1.6 28 km (17 mi) NW of Rossmoor, CA
  9. 1.7 27 km (17 mi) NW of Rossmoor, CA
  10. 1.8 27 km (17 mi) NW of Rossmoor, CA
  11. 2.6 26 km (16 mi) NW of Rossmoor, CA · felt by 23
  12. 1.7 26 km (16 mi) NW of Rossmoor, CA
  13. 1.6 26 km (16 mi) NW of Rossmoor, CA
  14. 1.7 26 km (16 mi) NW of Rossmoor, CA
  15. 1.6 27 km (17 mi) NW of Rossmoor, CA
  16. 1.7 26 km (16 mi) NW of Rossmoor, CA
  17. 1.9 26 km (16 mi) NW of Rossmoor, CA
  18. 1.6 26 km (16 mi) NW of Rossmoor, CA
  19. 1.6 26 km (16 mi) NW of Rossmoor, CA
  20. 1.6 27 km (17 mi) NW of Rossmoor, CA
  21. 2.2 26 km (16 mi) NW of Rossmoor, CA
  22. 1.6 27 km (16 mi) NW of Rossmoor, CA
  23. 1.6 27 km (17 mi) NW of Rossmoor, CA
  24. 1.6 26 km (16 mi) NW of Rossmoor, CA
  25. 1.6 26 km (16 mi) NW of Rossmoor, CA
  26. 2.0 26 km (16 mi) NW of Rossmoor, CA · felt by 1
  27. 1.7 27 km (17 mi) NW of Rossmoor, CA
  28. 2.4 28 km (18 mi) WNW of Rossmoor, CA
  29. 2.6 26 km (16 mi) NW of Rossmoor, CA · felt by 24
  30. 1.7 27 km (17 mi) NW of Rossmoor, CA
  31. 1.6 26 km (16 mi) NW of Rossmoor, CA
  32. 1.6 28 km (17 mi) NW of Rossmoor, CA
  33. 1.6 26 km (16 mi) NW of Rossmoor, CA
  34. 1.9 26 km (16 mi) NW of Rossmoor, CA
  35. 1.6 28 km (17 mi) NW of Rossmoor, CA
  36. 2.3 26 km (16 mi) NW of Rossmoor, CA · felt by 4
  37. 1.7 27 km (17 mi) NW of Rossmoor, CA
  38. 2.3 27 km (17 mi) NW of Rossmoor, CA
  39. 1.8 28 km (17 mi) NW of Rossmoor, CA
  40. 3.1 14 km (9 mi) NW of Rossmoor, CA · felt by 1,125
  41. 1.5 27 km (17 mi) SSW of Rossmoor, CA
  42. 1.9 23 km (14 mi) NNW of Rossmoor, CA
  43. 2.1 12 km (7 mi) SE of Rossmoor, CA · felt by 36
  44. 2.3 17 km (11 mi) SW of Rossmoor, CA
  45. 1.6 16 km (10 mi) WNW of Rossmoor, CA
  46. 2.0 25 km (15 mi) NE of Rossmoor, CA · felt by 10
  47. 1.6 17 km (11 mi) N of Rossmoor, CA
  48. 2.3 27 km (17 mi) SSW of Rossmoor, CA · felt by 1
  49. 2.5 26 km (16 mi) NW of Rossmoor, CA · felt by 280
  50. 2.3 7 km (4 mi) NW of Rossmoor, CA · felt by 196

From the QuakeIndex database, which reads the USGS feed every 30 seconds and holds the USGS catalogue for the US from 2016 (M1.5+). Times are Rossmoor time. Distances are from the town centre. Quakes USGS named after Rossmoor are listed even when they are further out.

Show these earthquakes on your own site: a free card with the latest quakes near Rossmoor, for a local news site, school or neighborhood page.

On the map

The white circle is Rossmoor; dots are the 50 most recent earthquakes within 30 km. Map © OpenStreetMap contributors.

Estimated shaking in Rossmoor

The strongest shaking in Rossmoor from a quake since 2016 is estimated at intensity III (weak), from the M 4.3 on 17 September 2021, 17 km away. Intensity II and III are felt by some people at rest indoors; IV by most people indoors; V and above wakes sleepers and moves objects.

MagnitudeWhenDistanceShaking in Rossmoor (est.)
M 4.3 17 kmIII · Weak · felt by 10,301
M 4.5 28 kmIII · Weak · felt by 21,402
M 3.2 9 kmIII · Weak · felt by 879
M 4.0 29 kmIII · Weak · felt by 7,217
M 3.4 15 kmIII · Weak · felt by 3,493

An estimate for the town centre from magnitude, depth and distance, with the intensity equation USGS Did You Feel It? uses (Atkinson & Wald, 2007), on the Modified Mercalli scale. All 5 reach intensity II or more in town, where people at rest start to notice. Ground conditions change it street by street. It describes the past, not a hazard.

Before 2016

The USGS record since 1900 lists 11 earthquakes of M5 or more within 50 km of Rossmoor; the five largest:

  1. 6.4 The 1933 Long Beach, California Earthquake · 19 km SSE of Rossmoor
  2. 5.9 The 1987 Whittier Narrows, California Earthquake · 31 km N of Rossmoor
  3. 5.4 5km S of Chino Hills, CA · 35 km ENE of Rossmoor
  4. 5.3 2 km SSW of Santa Monica, California · 45 km WNW of Rossmoor
  5. 5.3 7km W of Newport Beach, CA · 20 km SSE of Rossmoor

USGS ComCat, M5+ from 1900 to 2015. This is the record, not a forecast.

Nearest mapped faults

USGS Quaternary Fault and Fold Database. Near is not the same as on.

Nearby towns

Long Beach 10 km · Huntington Beach 16 km · Compton 17 km

Be ready

Earthquakes cannot be predicted, here or anywhere, so the useful step is the one taken beforehand. The advice below is from the agencies responsible for it.

If you felt one

QuakeIndex does not issue warnings or forecasts. For earthquake early warning see ShakeAlert and the MyShake app.