Dense Fog — Merced and Madera, California

2021-01-09 · Merced and Madera, California

Event narrative

Merced reported visibility below a quarter mile.

Wider weather episode

High pressure strengthened over California on January 8 resulting in another night of clear skies, light winds and inversion conditions in the San Joaquin Valley. As a result, areas of dense fog reformed during the evening of January 8 and the early morning hours of January 9. The fog lifted into a low cloud deck during the late morning which hung around until late afternoon.

Source: NOAA Storm Events Database, event_id 928483. Narrative written by the NWS forecast office that issued the report.