How Fog Forms Weather. 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. Enter and space open menus and escape closes them as well. Tab will move on to the next part of the site rather than go through menu items. Photo via Shutterstock. Have you ever looked out the window on an otherwise clear day and wondered where the fog suddenly came from?
Or woke up and looked out the window to be surprised you can't see the house across the street because of a heavy blanket of fog? Fog sometimes seems as though it comes out of nowhere, obscuring views and limiting visibility suddenly and significantly. When it does, it's because of a combination of factors, including humidity and temperature.
Fog is basically a cloud, but while clouds can form at any altitude, fog only forms at low altitudes, near the ground, according to the National Oceanic and Atmospheric Administration NOAA. Fog develops when water vapor — the gas form of water — condenses. As it condenses, the water vapor molecules combine, which in turn form water droplets that hang in the air, according to National Geographic.
The droplets are what make fog visible, because water vapor, like all gases, is invisible. Fog develops in humid conditions, because there has to be a lot of water vapor in the air for it to form, National Geographic reports. Thousands of driving accidents happen each year because of fog. Fog also creates trouble for air travelers. Foggy conditions create dangerous flying conditions and can delay or cancel flights. Pilots and drivers can get some help from space, though.
The first is called a geostationary satellite. These satellites orbit Earth in the same exact time that it takes for Earth to make a full rotation. Orbiting Earth in such a way allows the satellite to hover over one location, providing a bird's eye view. The second kind is a polar satellite. The orbits of these satellites cross over each of the poles. We hope you enjoy exploring other Wonders! Kellen Jan 9, I learned a lot.
This website is awesome!!!!!!! Yay, Kellen! We are so glad, and hope you are able to explore more Awesome Wonders! Samah Jan 9, Hi i loved the article it was very informational and cool! Thank you, Samah! We are glad that you enjoyed the article. Evan Jan 9, I thought fog was formed from clouds and the wind. Well I may never know. I am a new wonderer. Elizabeth Jan 9, I learned that fog can be more dangerous than you think it is. I also found it amazing that this article was so descriptive, and I recommend having a new person telling this wonderful article.
Hi Elizabeth! We are so glad that you enjoyed and learned so much from the article! Jensen Jan 9, Thanks that was fun to learn about fog, and how it is made, and how it is formed on or close to the ground. Hello Jensen! It certainly sounds like you learned a lot! Kade Jan 8, I learned that there are 4 different types of fog. I also found out that Point Reyes, California is a very foggy place. Wonderopolis Jan 8, Hi Kade!
Sara Jan 7, It is Sara from Mrs. Bithells class! I am learning about different kinds of clouds such as stratus, cirrus, cumulus, and cumulonimbus.
I am very interested in learning about things like water vapor, condensation, and how sleet, hail, snow, and rain are formed in many different types of clouds; but I also enjoyed learning some new facts about clouds on this website, Wonderopolis! Kevin Jan 7, I really enjoyed this video and thought it was very resourceful. It had very good facts. I learned that fog forms when warm air meets colder air.
Zack Jan 7, I liked learning about fog. Clouds on the ground, sounds like Heaven. Jordyn Oct 29, Katie Jan 7, I really liked this article. It was very interesting! It was filled with facts I would have never known. Thank you! Drew Jan 7, That's cool that the foggiest place is Grand Banks off the coast of Newfoundland. Allison Jan 7, My favorite part about learning about fog was that I found out that Grand Banks off the coast of Newfoundland is the foggiest place in the world! This is a really interesting site.
Maddy Jan 7, The internet was slow when I was doing this, so I had to read everything This article is very informative though :.
Baheer May 19, Wonderopolis May 19, Alex Martinez May 4, Thank you for making this article! I think it was very interesting.. I live in Massachusetts and there's mist and sometimes fog here in the morning. I have a friend in Ohio that said that he had never seen such a thick fog before and that in Ohio it pours down from the hills. I assumed it was caused by trees, or wetlands
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