1.8

M1.8 Earthquake 5 km SE of Napa, CA — July 16, 2026

2026-07-16 17:17:29 UTC (2026-07-16) · approx. 9:17 AM UTC-8 local

MagnitudeM1.8(md)
Time17:17 UTC≈ 9:17 AM UTC-8
Depth-0.1 kmshallow crustal
Coordinates38.261°, -122.244°
Felt byNo felt reports
Status✓ Reviewed by USGS
Map showing earthquake epicenter at 38.26°, -122.24°

Earthquake Details

Magnitude
1.8 md
Depth
-0.1 km
shallow crustal
Location
38.2610°N
-122.2440°E

Technical Information

Event ID
nc75397186
Event Type
quarry blast
Status
✓ Reviewed
Significance
49
Stations Used
26
Azimuthal Gap
71.0°
Min Station Distance
0.029°
RMS Residual
0.19 sec
Last Updated
2026-07-28 07:02:27 UTC

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Actions

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Understanding This Data

Magnitude 1.8 earthquakes are typically only recorded by instruments.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: nc75397186). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, July 16, 2026). M1.8 Earthquake 5 km SE of Napa, CA — July 16, 2026. Retrieved July 28, 2026 from https://www.earthquaketracker.org/earthquakes/event/nc75397186/