Flood in San Mateo County, California

Flood November 17, 2025 · San Mateo County, California

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

Flooding was reported in the number 1, 2, and 3 lanes of southbound US Highway 101 at Holly Street, and in the number 1 and 2 lanes of northbound US Highway 101 between California Highway 92 and Ralston Street.

The wider storm

A low pressure system brought rain and winds to the Bay Area and Central Coast on November 16 and 17th. Special Marine Warnings and Special Weather Statements were issued due to isolated thunderstorms causing localized heavy rain and gusty winds. The main frontal rain band came through in the overnight hours, with isolated to scattered showers and some thunderstorms continuing into the 17th.

Began near (sql)san Carlos Arpt (37.5139, -122.2565).

Source: NOAA Storm Events Database, event 1299249. Narratives are written by the National Weather Service forecast office that issued the report.

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