Fog follows snow for morning commute - Tucson News Now

Fog follows snow for morning commute

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Dense fog has formed across the metropolitan Tucson area.

With the wet ground and cold temperatures, the temperature and dew point (a measure of moisture in the atmosphere) are equal to one another. That results in a saturated airmass, with 100% humidity.

Fog has formed. It is the same as being in a dense cloud.

When driving in dense fog, use the low beam headlight setting and allow plenty of room between your car and the one in front. Obviously, slower speeds are also essential in dense fog.


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