Dense Fog — Merced and Madera, California

2020-12-21 to 2020-12-22 · Merced and Madera, California

Event narrative

Atwater reported visibility below a quarter mile.

Wider weather episode

Areas of dense fog reformed in the San Joaquin Valley during the evening of December 21. The fog was responsible for a two vehicle accident near Porterville in which the driver of one of the vehicles was killed during the early morning of December 22. The fog lifted into a low cloud deck by late morning and dissipated by early afternoon as a low pressure system moving through the Pacific Northwest provided for some mixing.

Source: NOAA Storm Events Database, event_id 925632. Narrative written by the NWS forecast office that issued the report.