"Patchy dense fog has developed in the Tennessee Valley, reducing visibilities to a quarter of a mile in some areas.

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The NWS Morristown TN issued a weather alert at 1:58 a.m. on Tuesday, warning residents of fog until 8 a.m.

"The Extreme Cold Warning has been cancelled and is no longer in effect," according to the NWS Morristown TN.

Higher pressure is usually associated with sunny weather, lower pressure with stormy weather. The temperature to which the air needs to be cooled for moisture to condense, for example, as dew.

A polar vortex could cause light snow over the weekend in Knoxville. A polar vortex is to blame for freezing temperatures.

(WATE) — The National Weather Service in Morristown issued a flood warning ... The NWS says, “For the Pigeon River…including Newport TN…Minor flooding is forecast.” ...

MORRISTOWN — The National Weather Service (NWS) in Morristown, Tennessee, has issued a Hazardous Weather Outlook for portions of East Tennessee, Southwest Virginia, and Southwest North Carolina as a ...