![]() Hurricane and tropical storms reaching land doubled over the Caribbean and Gulf of Mexico during the last and powerful El Nino event of 1998. In 1997-1998, coinciding with a strong El Nino, record winter temperatures were recorded in Europe, and 1998 was the warmest year on record globally. Weak impacts of these weather phenomena are felt in the form of increased rainfall and flooding in central Europe and Southern England. Their effects can be felt much further away though by shifting the jet stream, storm tracks, and monsoons. El Nino causes an increase in the amount of heat absorbed by the air above which causes a shift in weather patterns around the world.Įl Nino events usually bring heavy, torrential rain to South America and drought conditions to Indonesia and Australia. The El Nino of 1997-98 caused warming of ocean waters the size of the USA. This temperature change can affect a huge area. They can last a few weeks, months or even years in the case of a strong El Nino from 1991-1995. They take in turns to control the ocean’s temperatures, occurring every 2 to 7 years. La Nina is El Nino’s opposite and cools the same waters off Peru’s coast. Low plankton levels mean less food for fish and as a result fish stocks and fishermen both suffer. ![]() A strong El Nino can cause an increase in surface water temperatures of over 5✬, which results in a decrease of plankton that prefer a colder current. The most famous and well known of weather phenomena are El Nino and La Nina.Įl Nino is the occasional development of a warm ocean current replacing a cooler one along the coastline of Peru. Light pillars are an optical phenomenon in which ice crystals close to the ground reflect light coming from objects on the ground. Flat ice crystals that are suspended just above the surface on a cold night can reflect light back to whichever object is emitting that light resulting in the vertical beam of light we see.Weather phenomena are events that can influence our normal weather conditions. Sunlight that meets with ice crystals that are falling through the sky reflects back to the ice crystals to create this vertical beam we see extending into the sky. Sun pillars typically develop around sunrise or sunset. Sun pillars are optical phenomenon in which sunlight is reflecting off of ice crystals. They are typically white but can have color associated with them. Storm Data, a monthly publication, contains a chronological listing, by state, of storms and unusual weather phenomena.Reports contain information on storm paths, deaths, injuries, and property damage. Similar to sundogs, sunlight bends when it travels through ice crystals in the cirrus clouds, but sunlight is also reflecting off of the ice crystals to help form the ring around the sun that we see. Cirrus clouds (thin, upper-level clouds usually made of millions of ice crystals) are present in the sky when halos form. Halos are an optical phenomenon in which light is reflected and refracted through ice crystals in the atmosphere. At the point where this happens, red is seen closest to the sun with the color fading to blue on the outside of the sundog. Meteorological reports from Europe indicate that the number and intensity of. The change in direction causes the light to break into the color components we see to the left and right of the sun. Dangerous weather phenomena and their effect on en-route flight delays in. Because these tiny ice crystals are aplenty during the winter months, there are many opportunities to view this beautiful spectacle.Īs the sunlight meets the ice crystals within a cloud the light changes direction. Sundogs are an optical phenomenon in which light is refracted through ice crystals in the atmosphere. Dust devils are created when hot air near the ground surface rapidly rises into the cool air above it. While tornados form from clouds and extend to the ground, a dust devil starts from a whirlwind at ground level. These are some of the most common optical phenomena we get in Iowa. These incredible weather phenomenon look like small tornados comprised of dust and dirt. IOWA - Ever look up to see something beautiful, but unique in the sky? There are a lot of interesting things sunlight can do with the ice crystals in the sky. Please look at the time stamp on the story to see when it was last updated. This is an archived article and the information in the article may be outdated.
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