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About Us. Privacy Policy. Terms of Service. Site Map. Take action. That's right, Richard! That's a great question, Leonardo! Thanks, Vanessa! We hope so, too. Be sure to share what you learned with your friends and family! Welcome to Wonderopolis, Evan! We are happy that you decided to learn about fog today. Hi Sara! Hi Kevin! We're so glad you learned about fog with us! Hi, Jordyn! Thanks for joining the discussion! We hope yo had fun exploring this Wonder and learned something new about fog!
Hi Zack! It is a really neat feeling to walk through fog! We hope you get to experience it! Hi Katie! We're so glad that you enjoyed the article and learned about fog with us!
Hi Drew! It is interesting! Would you ever want to travel to Newfoundland? It sounds like an cool place! Hi Allison! Hi Maddy! We're so glad that you were able to read the entire wonder! Now you know where fog comes from! We're so happy to hear that, Baheer!
It was FUN to learn where fog comes from, wasn't it? Thanks for sharing about the differences in where you and your friend live. It's fun to learn about the weather in different parts of the country and the world , isn't it? We like your question about the color of clouds and fog, Team McNeil 20! Welcome to Wonderopolis, Mrs. We hope you will visit Wonderopolis again soon Hi, Jillian!
We think Mrs. We think it would be neat to live in San Francisco and be able to walk around in the "clouds" so often! This process is called ' condensation. We are undergoing some spring clearing site maintenance and need to temporarily disable the commenting feature. Thanks for your patience. Drag a word to its definition. Want to add a little wonder to your website? Help spread the wonder of families learning together. We sent you SMS, for complete subscription please reply. Follow Twitter Instagram Facebook.
What is condensation? Where are some of the foggiest places in the world? Tags: See All Tags cloud , condensation , fog , vapor , water. Not quite… Fog actually forms close to the Earth where we see it. Wonder What's Next? Try It Out Ready to make your own fog?
Did you get it? Test your knowledge. Wonder Words atmosphere condensation dense vapor radiation upslope advection evaporation visibility Take the Wonder Word Challenge. Join the Discussion. JAcob Nov 30, Dec 7, Mar 3, What's up? How did you like this Wonder, Dilon? Keonta Sep 30, Oct 1, We're glad to hear from you, Keonta! In the atmosphere, the fluid is wind. When the moist , warm air makes contact with the cooler surface air, water vapor condenses to create fog.
Advection fog shows up mostly in places where warm, tropical air meets cooler ocean water. The Pacific coast of the United States, from Washington to California, is often covered in advection fog. The cold California Current , which runs along the western coast of North America, is much cooler than the warm air along the coast. Valley fog forms in mountain valleys, usually during winter. Valley fog develops when mountains prevent the dense air from escaping. The fog is trapped in the bowl of the valley.
In , vapor condensed around particles of air pollution in the Meuse Valley, Belgium. More than 60 people died as a result of this deadly valley fog. Freezing fog happens when the liquid fog droplets freeze to solid surfaces. Mountaintops that are covered by clouds are often covered in freezing fog.
As the freezing fog lifts, the ground, the trees, and even objects like spider webs, are blanketed by a layer of frost. The white landscapes of freezing fog are common in places with cold, moist climates, such as Scandinavia or Antarctica.
Fog Catchers Many ancient cultures collected water from fog by placing large pots under trees and shrubs. As the water from fog collected on these objects, the pots collected the water. This method of water collection was effective, but not as effective as collecting rainwater or other liquid water.
Today, engineer s are working on more sophisticated ways to collect water from fog. As fog glides in, water droplets form around the thin screens and drip to the collection pools below. In one day, a single screen can collect more than a hundred gallons of water. The village of Bellavista, Peru, relies on fog catchers.
Bellavista is an area that has little access to liquid water—no rivers, lakes, or glaciers are nearby. Wells dry up quickly. Water for irrigation and human consumption is threatened. Every year, however, huge fogs blow in from the Pacific Ocean. In , the community invested in a series of fog catchers outside of town. Now, the residents of Bellavista have enough water to irrigate trees and gardens, as well as provide for their own drinking and hygiene needs.
Engineers warn that fog catchers will only work in small areas. Current Hazards. Local Radar. Rivers and Lakes. Climate and Past Weather. Valley fog in Harrison County, Indiana. Scott Taylor Advection Fog Advection fog often looks like radiation fog and is also the result of condensation. Fog invading downtown Louisville from the Ohio River. WHAS Freezing Fog Freezing fog occurs when water droplets remain in the liquid state until they come into contact with a surface upon which they can freeze.
Freezing fog in Jefferson Memorial Forest. Tony Bright Evaporation or Mixing Fog This type of fog forms when sufficient water vapor is added to the air by evaporation and the moist air mixes with cooler, relatively drier air.
Hail Fog Hail fog is an unusual type of fog that forms shortly after a heavy hailstorm. Hail fog along Interstate 65 near Horse Cave, Kentucky. Weather Story.
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