Like low-level clouds, the most basic classification of midlevel clouds is also based on their elevation from the Earth's surface. Mid-level clouds exist between 2 km and 6 km above the surface. Mid-level clouds have been classified into 3 types: Altocumulus, Altostratus, and Nimbostratus (Oliver, 2005). All of these clouds occur in layers but differ in color, precipitation, and cloud description. Altocumulus can be found widely in mid-latitude. It consists of water and crystal ice. Altocumulus is relatively thin and features different cloud elements as a distinct shape due to the different species and types of altocumulus that have been identified. It can also exist in different elements such as long rolls, tufts of wool (Altocumulus floccus) and castle-shaped (castellanus). As for precipitation, altocumulus clouds can produce light rain. Altocumulus occurs in white or gray colors and sometimes forms both white and gray spots, sheets or layers generally with shading, consisting of laminae, spots etc. (Hauze, 1993). Altostratum has a fibrous or uniform appearance compared to altocumulus. . These global clouds are made up of water and ice crystals. Its total coverage of the sky and the sun can be revealed at least vaguely as through frosted glass because the altostratus has thin parts (Hauze, 1993). Altostratus can be seen clearly at the top of the mountains. Sometimes in the altostratum you can see the corona, which is the light of the sun and moon. In the Altostratus rain and snow clouds usually form and bring thunderstorms at the same time. Even though it covers the entire sky and appears gray-blue in color, sunlight can still penetrate but turn into water or blur. For altostratus precipitation, it is prolonged but with light rain or...... middle of paper......Cirrostratus. Cirrostratus are difficult to see because they appear as lightning in the sky. Unlike other clouds, cirrostratus does not block the sun's rays but when we see it in the sky it looks like a combination of clouds and rays. Cirrostratus is made up of ice crystals and also produces the halo phenomenon. It looks very beautiful when we see it from below. Cirrostratus forms when cirrus clouds join together and spread. As for cirrostratus, it has no precipitation. Cirrostratus consists of transparent, smooth-looking, white clouds and totally overcast skies (Hauze, 1993). Works CitedHouze, R. A. (1993). Cloud dynamics. San Diego: Academic Press. Oliver, J. E. (2005). Encyclopedia of world climatology. Dordrecht, Netherlands: Springer.Pinney, G. (2011). The cloud collector's manual. San Francisco, CA: Chronicle Books.