The Round Valley Earthquakes

Round Valley Reservoir, 1958.

On Sunday, December 28, 2025 at 4:41 p.m. a 4.7 magnitude earthquake centered at Round Valley struck. For those not familiar with Round Valley, it is due north of Susanville, as the crow flies about nine miles and is privately owned.  Then on Tuesday night, December 30 at 9:49 p.m. a second 4.9 earthquake occurred there.

It should be noted that east side of Eagle Lake a consist of fault blocks namely Mahogany and Blacks Mountain. You can read about the 1889 Eagle Lake earthquake here. There was a notable quake in 1921, though not as strong.

Personally, I really felt the first one (2025) since, I was preparing dinner (garlic noodles) when it struck. My milk bottle collection rattled and my mantle clock stopped. The second one, I was in bed, but I heard things rattle.

Tim

 

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