Steam fog forms when cold air moves over warm water. When the cool air mixes with the warm moist air over the water, the moist air cools until its humidity reaches 100% and fog forms.

Fog is formed by the condensation of water vapor on tiny particles that are always present in natural air; this occurs when the air becomes saturated with moisture. There are several different types of fog.

Sep 30, 2025 · Who knew that there were so many different types of fog, each forming under different conditions? Learn about them here!

Oct 19, 2024 · Learn about fog in meteorology. Discover the definition, how and why fog forms, the different types, and how it differs from other phenomena.

Jan 16, 2025 · Fog is made up of molecules of water vapour, suspended in the air as tiny droplets of water but lingering close to the surface. Essentially, fog is just cloud that touches Earth’s surface and …

Ice Fog: This type of fog is only seen in the polar and artic regions. Temperatures at 14 F (-10°C) is too cold for the air to contain super-cooled water droplets so it forms small tiny ice crystals.

3 days ago · As dense morning fog blankets Northern and Central California day after day, here’s what you need to know about tule fog.

1 day ago · Drivers around Sacramento and the Central Valley have been unable to escape a particular weather phenomenon for the past couple weeks. Blankets of dense grey fog have hung around the …

8 hours ago · Dense tule fog has gripped the Central Valley, cutting visibility on I‑5, 80 and 99. Where it's worst, driving safety tips, and when it may lift.

While fog is distinctly different from severe weather events like thunderstorms, its monitoring is vital due to the potential risks it poses. Poor visibility due to fog can lead to hazardous driving and flying …