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Dense Fog in Orange County Coastal Areas, California

Dense Fog November 23, 2012 · Orange County Coastal Areas, California

What the National Weather Service wrote

Fullerton Airport ASOS reported one-quarter mile visibility from 0253 to 0944 PST. John Wayne Airport ASOS reported one-quarter mile visibility from 0142 to 0900 PST. CHP reported 100 foot visibility on Marine Way near Irvine.

The wider storm

Clear skies, high humidity just inland from the coast, along with the radiational cooling allowed dense fog to form near the coast during the nights and early mornings of the 23rd and 25th. Drainage flow kept the fog within about 10 miles of the coast, with the exception of the inland, low area of Ramona. Multiple airports reported visibilities less than 1/4 mile for several hours on each of those mornings. The fog created some airport delays as well as security problems for the Border Patrol along the Mexican Border and along the coast up to San Clemente.

Source: NOAA Storm Events Database, event 418621. Narratives are written by the National Weather Service forecast office that issued the report.

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