Webaug 20, 2023 · tropical storm hilary left an indelible impression on san diego county, toppling trees, shifting boulders, flooding intersections and canceling airline flights with. Webfeb 7, 2024 · the san diego region remains under a flood watch through tonight because of excessive rainfall, the national weather service said, and residents in mountain areas. Webaug 21, 2023 · tropical storm hilary slammed southern california with a deluge of rainfall, flooding roadways and breaking records in parts of the region on sunday as it made its.