What readers need to know

USGS recorded a magnitude 3.9 earthquake 3.7 miles NW of Pinnacles, CA, about 41 miles from Pacific Grove, at a depth of 2.9 miles. USGS displays 34 total community responses for this event; that total is not evidence the earthquake was felt in Pacific Grove and maximum reported community intensity 4.3 and instrumental intensity 4.5. The record is reviewed. The event meets MyPG.news’s conservative distance-and-magnitude relevance gate; inclusion still does not confirm shaking or damage in Pacific Grove.

The epicenter coordinates reported by USGS are 36.578, -121.182. The magnitude type is mw and the current solution uses 85 reporting stations. USGS last updated this event record Aug 12, 2026, 3:26 AM PDT.

The event record includes community felt reports, a ShakeMap, a ShakeAlert product. No PAGER alert level is shown. The USGS record does not carry a tsunami flag.

MyPG.news checked the strongest available official event fields and provides the direct USGS record below. A magnitude estimate, location, depth or review status may be revised as analysts process more data. No named fault, Pacific Grove damage or local service interruption is attributed without a separate official source.