2.2

M2.2 Earthquake 8 km NE of Alum Rock, CA — July 28, 2026

2026-07-28 22:39:10 UTC (2026-07-28) · approx. 2:39 PM UTC-8 local

MagnitudeM2.2(md)
Time22:39 UTC≈ 2:39 PM UTC-8
Depth9.0 kmshallow crustal
Coordinates37.410°, -121.754°
Felt byNo felt reports
Status✓ Reviewed by USGS
Map showing earthquake epicenter at 37.41°, -121.75°

Earthquake Details

Magnitude
2.2 md
Depth
9.0 km
shallow crustal
Location
37.4103°N
-121.7542°E

Technical Information

Event ID
nc75407482
Event Type
earthquake
Status
✓ Reviewed
Significance
72
Stations Used
98
Azimuthal Gap
32.0°
Min Station Distance
0.054°
RMS Residual
0.07 sec
Last Updated
2026-08-07 17:22:22 UTC

Nearby Earthquakes (Last 7 Days)

3.3
3 km ESE of Larkfield-Wikiup, CA
2 days ago · 8.8 km deep
2.8
15 km SE of Petrolia, CA
2 days ago · 11.3 km deep
3.0
4 km WSW of Hamilton City, CA
3 days ago · 25.6 km deep
2.6
2 km N of Middletown, CA
3 days ago · 4.2 km deep

Actions

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Understanding This Data

Magnitude 2.2 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: nc75407482). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, July 28, 2026). M2.2 Earthquake 8 km NE of Alum Rock, CA — July 28, 2026. Retrieved August 7, 2026 from https://www.earthquaketracker.org/earthquakes/event/nc75407482/