Dense Fog — North Bay Interior Valleys, California

2021-09-05 · North Bay Interior Valleys, California

Event narrative

Santa Rosa Airport ASOS reported visibility down to a quarter of a mile.

Wider weather episode

Patches of dense fog formed into the early morning of September 5th around the San Francisco Bay Area and down to Monterey. Observations ranged from 1/8 of a mile to 2 miles in affected areas.

Source: NOAA Storm Events Database, event_id 979068. Narrative written by the NWS forecast office that issued the report.