QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8ml

Earthquake near Dana Point, CA

No earthquake was likely felt in Dana Point in the 24 hours to 5:25 am PST (13:25 UTC). The last one was M 3.5, 31 km (19 mi) SW, at 1:22 pm PDT on 5 October 2026, estimated intensity II (weak) in town; 126 felt reports to USGS. Every earthquake near Dana Point

This page: a magnitude 2.8 earthquake was recorded 27 km (17 mi) west-southwest of Dana Point, CA, at 8:05 pm PST on 28 December 2024 (04:05 UTC), 11 km deep. 6 people have reported feeling it to USGS.

USGS: 27 km WSW of Dana Point, CA

87 km (54 mi) SSE of Los Angeles, CA · 29 km (18 mi) S of Newport Beach, CA

8:05 pm PST, Dec 28, 2024 · · 11 km deep · released about 400 lb of TNT

Every earthquake near Dana Point Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Orange County 41 kmLos Angeles County 100 kmSan Diego County 114 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
8:05 pm PST on 28 December 2024 ()
Where
27 km (17 mi) west-southwest of Dana Point, CA · earthquakes near Dana Point
Magnitude
M 2.8 (ml)
Depth
11 km below the surface
Felt
6 reports · strongest reported intensity IV
Nearest
Orange County, 41 km NNE
Nearest mapped fault
Palos Verdes fault, 2 km from its surface trace — near is not the same as on
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 614 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 23 km (14 mi) from the epicentre. In Dana Point, 27 km away, the estimate is intensity II (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

Earthquakes near other towns within 30 km: Laguna Beach.

How big was it?

This earthquake released about 400 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 38,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 27,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.4× the energy of this one
  4. This earthquake M 2.8 about 400 lb of TNT

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

For this area

The largest earthquake within 50 km since 2016 was M 4.1 on 2024-01-01 — about 92 times the energy of this one.

Before 2016, the USGS record lists 4 earthquakes of M5 or more within 50 km:

  1. 6.4 The 1933 Long Beach, California Earthquake · 33 km N of this epicentre
  2. 5.5 The 1986 Oceanside, California Earthquake · 41 km S of this epicentre
  3. 5.3 7km W of Newport Beach, CA · 32 km N of this epicentre
  4. 5.0 2km ENE of Westminster, CA · 48 km N of this epicentre

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 33.3387, -117.9448. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Orange County, CA 41 km (25 mi) NNE earthquakes near Orange County
Los Angeles County, CA 100 km (62 mi) NNW earthquakes near Los Angeles County
San Diego County, CA 114 km (71 mi) ESE earthquakes near San Diego County
Ventura County, CA 158 km (98 mi) NW earthquakes near Ventura County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

44 earthquakes have been recorded within 50 km since this one.

  1. 1.9 33 km ENE of San Clemente Is. (SE tip), CA
  2. 1.5 2 km NW of Costa Mesa, CA
  3. 1.8 21 km SSE of San Pedro, CA
  4. 3.1 5 km S of San Clemente, CA
  5. 2.4 33 km ENE of San Clemente Is. (SE tip), CA
  6. 1.9 6 km S of Huntington Beach, CA
  7. 2.6 6 km S of Huntington Beach, CA
  8. 1.8 6 km S of Huntington Beach, CA
  9. 1.7 26 km WSW of Carlsbad, CA
  10. 2.3 27 km SW of Carlsbad, CA
  11. 1.9 27 km NE of San Clemente Is. (SE tip), CA
  12. 1.6 3 km SE of Dana Point, CA
  13. 1.5 3 km SSE of Dana Point, CA
  14. 1.6 31 km ESE of Avalon, CA
  15. 1.8 17 km S of San Pedro, CA

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.