2.1

M2.1 Earthquake 6 km SE of Napa, CA — April 30, 2026

2026-04-30 17:31:02 UTC (2026-04-30) · approx. 9:31 AM UTC-8 local

MagnitudeM2.1(md)
Time17:31 UTC≈ 9:31 AM UTC-8
Depth-0.2 kmshallow crustal
Coordinates38.257°, -122.239°
Felt byNo felt reports
Status✓ Reviewed by USGS
Map showing earthquake epicenter at 38.26°, -122.24°

Earthquake Details

Magnitude
2.1 md
Depth
-0.2 km
shallow crustal
Location
38.2572°N
-122.2385°E

Technical Information

Event ID
nc75354442
Event Type
quarry blast
Status
✓ Reviewed
Significance
67
Stations Used
12
Azimuthal Gap
74.0°
Min Station Distance
0.029°
RMS Residual
0.16 sec
Last Updated
2026-05-01 01:26:20 UTC

Nearby Earthquakes (Last 7 Days)

2.9
18 km W of Petrolia, CA
3 days ago · 8.0 km deep
2.5
17 km SE of Silver Springs, Nevada
3 days ago · 7.5 km deep
3.1
4 km WSW of Johnsville, CA
5 days ago · -1.5 km deep
2.6
11 km N of Redwood Valley, CA
6 days ago · 7.0 km deep
2.8
67 km W of Petrolia, CA
6 days ago · 0.0 km deep

Actions

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Understanding This Data

Magnitude 2.1 earthquakes are typically only recorded by instruments.

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Authoritative source: USGS event page (event ID: nc75354442). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, April 30, 2026). M2.1 Earthquake 6 km SE of Napa, CA — April 30, 2026. Retrieved May 1, 2026 from https://www.earthquaketracker.org/earthquakes/event/nc75354442/