![]() It occurs most frequently over continental land areas such as over the Eastern US when the air mass moves out over the ocean. The formation of a front occurs when two adjacent air masses with different densities and temperatures meet and strengthen the discontinuity between the air masses. In the northern hemisphere winds ahead of the front will be southwest and shift into the northwest with frontal passage. The leading edge of a relatively colder air mass which separates two air masses in which the gradients of temperature and moisture are maximized. Q-STNRY = Quasi-Stationary or Near Stationary This information can tell pilots or drivers where to expect fog, and can help save lives.(click to enlarge image) Standard Text Abbreviations These satellites will be able to take very high-resolution photos of clouds and fogs. NOAA is developing a new generation of geostationary and polar satellites. Because the Earth rotates while the satellite makes its orbit, it is able to see nearly every part of Earth’s surface. Earth rotates under these satellites as they make the trip from pole to pole. The orbits of these satellites cross over each of the poles. Orbiting Earth in such a way allows the satellite to hover over one location, providing a bird's eye view. These satellites orbit Earth in the same exact time that it takes for Earth to make a full rotation. The first is called a geostationary satellite. Two types of satellites from the National Oceanic and Atmospheric Administration (NOAA) monitor fog from high in the sky. Pilots and drivers can get some help from space, though. Foggy conditions create dangerous flying conditions and can delay or cancel flights. Fog also creates trouble for air travelers. ![]() Thousands of driving accidents happen each year because of fog. Photo used with permission of Orlando Sentinel, Copyright 2008.įog can be a big problem for humans, especially when we have to drive or fly through it. Superfogs create very hazardous driving conditions.įog and smoke from a brush fire combined to make a super fog, resulting in this massive car accident in Florida in 2008. A super fog is so dense that you would not be able to see your own hand in front of your face. This combination of smoke and water vapor is a dangerous one. The smoke provides particles for the water vapor to condense around. One of the most troubling kinds of fog is called “super fog.” Super fog forms when smoke from wildfires and water vapor come together to form an extremely dense fog. When it comes into contact with cold surfaces such as roads and sidewalks, it instantly forms a dangerous icy layer. In this case, water in the air becomes “supercooled.” This supercooled water is a liquid, but it is colder than the freezing point (32✯). Sometimes it is cold enough, but the air does not have any particles. ![]() Ice crystals form in the air when it’s cold enough and particles like dust or smoke in the air provide a “seed” for the ice crystal to form around. Ice fog is common in parts of Alaska and Canada.Īnother kind of fog is freezing fog. Ice fog forms only at extremely cold temperatures. Ice fog forms when the air near the ground is cold enough to turn the water in fog into ice crystals. There are many different types of fog, too.
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