M2.4 · 3 km NW of The Geysers, CA

2026-07-27 06:29:25 UTC · 41.2 km (NNW) · depth 3.5 km

magnitude

2.4

distance

41.2 km

depth

3.5 km

envelope peak

20 µV

envelope SNR

13×

P predicted

7.1 s

sustain

10.3 s

low/high band

6.1×

vs NP.1835

1.42× †

Listen for how the pitch balance changes at the P wave (marked where it was picked), at the S wave (the dashed mark is its predicted arrival) and through the coda that follows. Volume is normalised to this clip, so it only says how much energy there is before, during and after the event relative to its own peak — not how big the earthquake was.

• The second confirmed event, two days after the first, and the first from The Geysers. Onset at +8.15 s — one of the five points that fixed the station’s P velocity.

Side by side with USGS NP.1835, 1.64 km away, both in ground velocity. Earlier front end than the calibration anchors, so the ratio is not averaged in.

← all catches