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Tule fog is a radiation fog, which condenses when there is a high relative humidity (typically after a heavy rain), calm winds, and rapid cooling during the night. The nights are longer in the winter months, which allows an extended period of ground cooling, and thereby a pronounced temperature inversion at a low altitude.
Fog is a visible aerosol consisting of tiny water droplets or ice crystals suspended in the air at or near the Earth's surface. [1] [2] Fog can be considered a type of low-lying cloud usually resembling stratus and is heavily influenced by nearby bodies of water, topography, and wind conditions.
With sufficient humidity in the cooler layer, fog is typically present below the inversion cap. An inversion is also produced whenever radiation from the surface of the earth exceeds the amount of radiation received from the sun, which commonly occurs at night, or during the winter when the sun is very low in the sky.
Tule fog / ˈ t uː l iː / is a thick ground fog that settles along the valley's length. Tule fog forms during the late fall and winter (California's rainy season), after the first significant rainfall. The official season is from November 1 to March 31.
Clear skies and some patchy valley fog starts the weekend. The fog will mix out shortly after sunrise and sunny skies will prevail for the first half of Saturday.
Valley Forge was the winter encampment of the Continental Army, under the command of George Washington, during the American Revolutionary War. The Valley Forge encampment lasted six months, from December 19, 1777, to June 19, 1778. It was the third of the eight winter encampments that Washington and the Continental Army endured during the war.
Despite the drier pattern, the setup will become conducive to late-night and early-morning valley fog later this week and this weekend as nighttime winds will be light, the sky will be clear, and ...
A valley is an elongated low area often running between hills or mountains and typically containing a ... even in winter when the valley's floor is filled with fog, ...