M1.8 · 4 km ENE of Saint Helena, CA

2026-08-21 04:19:32 UTC · 20.0 km (ENE) · depth 8.0 km

magnitude

1.8

distance

20.0 km

depth

8.0 km

envelope peak

11 µV

envelope SNR

6×

P predicted

3.4 s

sustain

6.7 s

low/high band

2.7×

vs NP.1835

1.77×

This one is in the record but has not been written up: no rendered trace and no audio yet, just the measurements above. They are the same measurements every featured catch is judged by.

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