Dense Fog — Sw S.j. Valley, California

2018-12-07 · Sw S.j. Valley, California

Event narrative

Visibility below a quarter mile was reported in Hanford.

Wider weather episode

As the low pressure system that was responsible for the strong winds on December 4 and 5 and the snow which disrupted travel over the Kern County Mountains on December 6 moved east of our area, high pressure built in bringing clearing skies and diminished winds to the San Joaquin Valley on the morning of December 7. This resulted in the formation of widespread dense fog over the San Joaquin Valley which adversely impacted travel on several major highways including on State Routes 99, 41, 180 and 152 and caused several school districts to ether delay morning bus service or open late. The fog dissipated in most of the valley by late morning.

Source: NOAA Storm Events Database, event_id 788644. Narrative written by the NWS forecast office that issued the report.