[Mick]

I'm predicting an earthquake, followed by a repeat of the Great Flood of 1862. Surprisingly, according to Native American lore, not all that uncommon: https://en.wikipedia.org/wiki/Great_Flood_of_1862

I realize that California is a dry state.  But about every 200 years or so, there exists a combination of factors that create a megaflood.  The last one was 158 years ago, the Great Flood of 1862 which put much of California under water, and forced the relocation of the state capital from Sacramento to San Francisco for a time.  
https://en.wikipedia.org/wiki/Great_Flood_of_1862

These floods occurred in A.D.: 212, 440, 603, 1029, c. 1300, 1418, 1605, 1750, 1810, and 1861–62. The flood in 1605 was particularly strong, making the 1862 flood look like a summer mist.
https://en.wikipedia.org/wiki/California_flood_of_1605

The U. S. Geological Survey estimates that the Flood of 1605, were it to happen today, would produce 3x the damage of a massive Southern California earthquake.  I'm not sleeping tonight...
https://pubs.er.usgs.gov/publication/ofr20101312

[Mick]

I'm predicting an earthquake, followed by a repeat of the Great Flood of 1862. Surprisingly, according to Native American lore, not all that uncommon: https://en.wikipedia.org/wiki/Great_Flood_of_1862

I realize that California is a dry state.  But about every 200 years or so, there exists a combination of factors that create a megaflood.  The last one was 158 years ago, the Great Flood of 1862 which put much of California under water, and forced the relocation of the state capital from Sacramento to San Francisco for a time.  
https://en.wikipedia.org/wiki/Great_Flood_of_1862

These floods occurred in A.D.: 212, 440, 603, 1029, c. 1300, 1418, 1605, 1750, 1810, and 1861–62. The flood in 1605 was particularly strong, making the 1862 flood look like a summer mist.
https://en.wikipedia.org/wiki/California_flood_of_1605

The U. S. Geological Survey estimates that the Flood of 1605, were it to happen today, would produce 3x the damage of a massive Southern California earthquake.  I'm not sleeping tonight...
https://pubs.er.usgs.gov/publication/ofr20101312