Cumulonimbus clouds also have vertical growth and can grow up to 10 km high. At this height, high winds will flatten the top of the cloud out into an anvil-like shape. Cumulonimbus clouds are thunderstorm clouds and are associated with heavy rain, snow, hail, lightning, and sometimes tornadoes.

Cumulonimbus clouds are associated with extreme weather such as heavy torrential downpours, hail storms, lightning and even tornadoes. Individual cumulonimbus cells will usually dissipate within an hour once showers start falling, making for short-lived, heavy rain.

When the sun rises, the air and ground warm up. This leads to the air temperature being warmer than the dew point temperature, which causes the fog droplets to evaporate. As the air cools during the longer night the relative humidity increases, which can result in to fog formation.

The fog season is usually based in the cooler months (late autumn, winter and early spring). An example is found in the San Joaquin Valley and Sacramento Valley areas of California’s Great Central Valley, where a thick ground fog, known as Tule fog, may form, in particular in the months from November through March.

What Steps Can You Take to Drive Safely in Dense Fog?

• Minimize distractions.
• Reduce your speed.
• Roll down your window.
• Use roadside reflectors as a guide.
• Turn off cruise control.
• Use windshield wipers and defrosters.
• Drive with low beams and fog lights.
• Use the right edge of the road as a guide.

Fog and rain can clean the air effectively. At the same time however, chemicals and compounds that pollute the air can fall with rain to pollute soil and surface waters.

The cold balls of ice fall into warm, very moist air near the surface. As the hail accumulates on the ground, it cools the air just above the ground to the dew point, resulting in fog. The fog forms when winds are light, and it usually quite patchy and shallow.

Here’s what you should know about the 6 most common types of fog.

• But First… How Does Fog Form?
• 1) Radiation Fog.
• 2) Advection Fog.
• 3) Steam Fog.
• 4) Upslope Fog.
• 5) Precipitation Fog.
• 6) Freezing Fog.

There are several different types of fog, including radiation fog, advection fog, valley fog, and freezing fog. Radiation fog forms in the evening when heat absorbed by the Earth’s surface during the day is radiated into the air. As heat is transferred from the ground to the air, water droplets form.

According to the old folklore, it really can. The saying is, “For every foggy morning in August, it will snow that many days this winter.” During the winter of 2017-2018 we saw 4 days with some form of snow falling and that took place in the month of January.