Greetings, Atherton
We are expecting a Category 2–3 Atmospheric River from Wednesday through Saturday, bringing moderate (0.5 - 1.5 inches) rainfall to San Mateo County.
While widespread flooding is not anticipated, there is potential for nuisance flooding in urban and poor drainage areas, with minor creek and stream rises.
For those worried about possible flooding, free sandbags are available in Holbrook Palmer Park near the tennis courts.