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Fog Glossary It's a well-known fact that different cultures have a multitude of terms for the features that have the greatest impact on their environment. The Eskimos have 100 different words for snow, for example, as we've all been told. Likewise, residents of San Francisco's western neighborhoods have dozens of different terms for fog, the dominant meteorological condition in their mist-shrouded environs. The following Fog Glossary describes just a few of the terms you'll hear on a visit to the City. N Judah Obscura: An extremely hazardous condition in which heavy, rolling mists cling to the ground, rising to a height of about 20 feet and preventing the visualization of large moving objects.Lincoln Steamer: A particularly noxius blend of fog and diesel exhaust that blankets homes along the Lincoln Way corridor, one of the major thoroughfares in the Sunset District. Geary Gray Mist: The Richmond District's version of a Lincoln Steamer. Stanyan Shroud: Dense, far-reaching fog that extends all the way to the western limits of the Haight-Ashbury. See also: Full Sunset. October Surprise: A sudden, unseasonable arrival of fog that has brought to an end many an Indian Summer day. Glass Ceiling: A thin, wispy layer of fog that just slightly -- but stubbornly -- obscures the sun. Weekend Wake-up Call: When the fog suddenly rolls in on Saturday after several days of sunny weather during the work week. Full Sunset: When dense fog completely covers the Sunset District. See also: Stanyan Shroud. Half Sunset: When the fog line extends to 19th Avenue, the historical dividing line betwen the Inner and Outer Sunset. Nimbus Maximus: One of the most extreme fog conditions, rated as Fog Level 5 by the National Weather Service. Visibility range drops to as low as five feet, and those with lung conditions may have difficulty breathing. Small children and senior citizens are advised to stay indoors on Nimbus Maximus days. Eucalyptus Pluvius: A disconcerting condition in which fog-carried moisture collects on the leaves of the City's ubiquitous eucalyptus trees, then falls to earth in large drops resembling a rain shower. Castro Creeper: A common late afternoon condition in which slender tendrils of fog slip over Twin Peaks and penetrate the nooks and crannies of the Castro District. |
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