Earthquake · reviewed by a seismologist
M 2.2ml
Earthquake near North Tustin, CA
No earthquake was likely felt in North Tustin in the 24 hours to 12:49 am PST (08:49 UTC). The last one was M 3.2, 36 km (22 mi) W, at 12:44 am PDT on 9 October 2026, estimated intensity II (weak) in town; 1,090 felt reports to USGS. Every earthquake near North Tustin
This page: a magnitude 2.2 earthquake was recorded 3 km (2 mi) east-northeast of North Tustin, CA, at 6:25 pm PDT on 12 September 2017 (01:25 UTC), 2.9 km deep. 79 people have reported feeling it to USGS.
USGS: 3km ENE of North Tustin, CA
6 km (4 mi) NE of Tustin, CA · 65 km (41 mi) ESE of Los Angeles, CA
- When
- 6:25 pm PDT on 12 September 2017 ()
- Where
- 3 km (2 mi) east-northeast of North Tustin, CA · earthquakes near North Tustin
- Magnitude
- M 2.2 (ml)
- Depth
- 2.9 km below the surface
- Felt
- 79 reports · strongest reported intensity III
- Nearest
- Orange County, 11 km S
- Nearest mapped fault
- San Joaquin Hills thrust, 11 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 3125 days ago
Earthquake alerts for North Tustin, CA
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This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
At this magnitude and depth, people at rest would likely notice it out to about 18 km (11 mi) from the epicentre. In North Tustin, 3 km away, the estimate is intensity III (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.
Likely felt in: North Tustin 3 km, intensity III · Tustin 6 km, intensity II · Orange 8 km, intensity II · Santa Ana 10 km, intensity II · Irvine 13 km, intensity II · Yorba Linda 13 km, intensity II · Placentia 14 km, intensity II · Anaheim 15 km, intensity II. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 52 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 290,000× the energy of this one
- Magna, Utah 2020 M 5.7 200,000× the energy of this one
- Around the size people start to feel M 3.0 18× the energy of this one
- This earthquake M 2.2 about 52 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
No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.
Before 2016, the USGS record lists 14 earthquakes of M5 or more within 50 km; the five largest:
- 6.4 The 1933 Long Beach, California Earthquake · 27 km SW of this epicentre
- 6.0 The 1910 Lake Elsinore, California Earthquake · 35 km ESE of this epicentre
- 5.9 The 1987 Whittier Narrows, California Earthquake · 43 km NW of this epicentre
- 5.5 The 1990 Upland, California Earthquake · 42 km N of this epicentre
- 5.4 5km S of Chino Hills, CA · 19 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 33.7748, -117.7687. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Orange County, CA | 11 km (7 mi) | S | earthquakes near Orange County |
| Los Angeles County, CA | 65 km (41 mi) | NW | earthquakes near Los Angeles County |
| San Diego County, CA | 124 km (77 mi) | SE | earthquakes near San Diego County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
28 earthquakes have been recorded within 50 km since this one.
- 1.5 2km SSW of Mira Loma, CA
- 1.9 4km SE of Home Gardens, CA
- 1.9 2km NE of Villa Park, CA
- 1.7 4km SE of Dana Point, CA
- 1.9 4km SE of Home Gardens, CA
- 1.9 5km NNW of Lake Elsinore, CA
- 1.6 8km ESE of Yorba Linda, CA
- 1.5 5km ENE of Rancho Cucamonga, CA
- 1.7 12km SSE of San Pedro, CA
- 1.6 11km S of San Pedro, CA
- 1.8 3km WSW of East Los Angeles, CA
- 1.7 5km NE of Yorba Linda, CA
- 1.9 5km SSE of Home Gardens, CA
- 2.4 4km SSW of Yorba Linda, CA
- 1.6 7km WSW of Huntington Beach, 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
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.