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Climate Of Illinois
The Climate of Illinois describes the weather conditions, and extremes, noted within the state of Illinois, United States, over time. Because of its nearly length and mid-continental location, Illinois has a widely varying climate. Most of Illinois has a humid continental climate ( Köppen climate classification ''Dfa'') with hot, humid summers and cool to cold winters. However, the southern half of the state, from about Springfield southward, has a humid subtropical climate (Köppen ''Cfa'') with winters becoming more moderate as one travels south. Average yearly precipitation for Illinois varies from at the southern tip to in the northern portion of the state. Normal annual snowfall exceeds in Chicago, while the southern portion of the state normally receives less than .Illinois State Climatologist Office ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cold Front
A cold front is the leading edge of a cooler mass of air at ground level that replaces a warmer mass of air and lies within a pronounced surface trough of low pressure. It often forms behind an extratropical cyclone (to the west in the Northern Hemisphere, to the east in the Southern), at the leading edge of its cold air advection pattern—known as the cyclone's dry "conveyor belt" flow. Temperature differences across the boundary can exceed from one side to the other. When enough moisture is present, rain can occur along the boundary. If there is significant instability along the boundary, a narrow line of thunderstorms can form along the frontal zone. If instability is weak, a broad shield of rain can move in behind the front, and evaporative cooling of the rain can increase the temperature difference across the front. Cold fronts are stronger in the fall and spring transition seasons and are weakest during the summer. Development of cold fronts A cold front occurs wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Wettest Tropical Cyclones In The United States
Tropical cyclones move into the contiguous United States from the Atlantic Ocean, the Gulf of Mexico, and the eastern Pacific Ocean. The highest rainfall totals in the country have been measured across the Gulf Coast of the United States, Gulf Coast and lower portions of the East Coast of the United States, Eastern Seaboard. Intermediate amounts have been measured across the Southwestern United States, Southwest, New England, and the Midwestern United States, Midwest. The northern Great Plains and Northwestern United States, Pacific Northwest have received the lowest amounts, as those regions lie exceptionally far from the tropical cyclogenesis, breeding grounds of North Atlantic tropical cyclone, Atlantic and Pacific hurricane, Eastern Pacific tropical cyclones. The wettest tropical cyclone in the United States storm on record is Hurricane Harvey, which dumped of rain on Southeast Texas in 2017. Tropical Storm Claudette (1979), Tropical Storm Claudette holds the national 24-hour ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heat Wave
A heat wave, or heatwave, is a period of excessively hot weather, which may be accompanied by high humidity, especially in oceanic climate countries. While definitions vary, a heat wave is usually measured relative to the usual climate in the area and relative to normal temperatures for the season. Temperatures that people from a hotter climate consider normal can be called a heat wave in a cooler area if they are outside the normal climate pattern for that area. The term is applied both to hot weather variations and to extraordinary spells of hot weather which may occur only once a century. Severe heat waves have caused catastrophic crop failures, thousands of deaths from hyperthermia, increased risk of wildfires in areas with drought, and widespread power outages due to increased use of air conditioning. A heat wave is considered extreme weather, and poses danger to human health because heat and sunlight overwhelm the human body's cooling system. Heat waves can usually be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cold Wave
A cold wave (known in some regions as a cold snap, cold spell or Arctic Snap) is a weather phenomenon that is distinguished by a cooling of the air. Specifically, as used by the U.S. National Weather Service, a cold wave is a rapid fall in temperature within a 24-hour period requiring substantially increased protection to agriculture, industry, commerce, and social activities. The precise criteria for a cold wave are the rate at which the temperature falls, and the minimum to which it falls. This minimum temperature is dependent on the geographical region and time of year. In the United States, a ''cold spell'' is defined as the national average high temperature dropping below . A cold wave of sufficient magnitude and duration may be classified as a cold air outbreak (CAO). Effects A cold wave can cause death and injury to livestock and wildlife. Exposure to cold mandates greater caloric intake for all animals, including humans, and if a cold wave is accompanied by heavy and p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Climate Change In Illinois
Climate change in Illinois encompasses the effects of climate change, attributed to man-made increases in atmospheric carbon dioxide, in the U.S. state of Illinois. The United States Environmental Protection Agency reports that the climate of Illinois is changing. According to a 2016 report, Illinois is already experiencing the effects of climate change, including warming of approximately one degree Fahrenheit (about 0.6 degrees Celsius), more frequent flooding and later ice formation on the Great Lakes, and earlier melting. This same article notes that in the future, Illinois is likely to experience greater hazards from human-caused climate change, including heaving precipitation and higher flooding, large algae blooms on Lake Michigan, a longer growing season, but higher temperatures, which will offset the benefits of the longer season, higher levels of ground-level ozone, and more days with high temperatures above 95 degrees Fahrenheit (35 degrees Celsius). On January 23, 201 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tropical Storm Claudette (1979)
Tropical Storm Claudette was a 1979 tropical cyclone which was the third-wettest tropical cyclone on record in the contiguous United States. The storm caused significant flooding in eastern Texas and western Louisiana in July 1979. The eighth tropical cyclone and third named storm of the 1979 Atlantic hurricane season, Claudette developed from a tropical wave located east of the Windward Islands on July 16. It gradually strengthened and was upgraded to a tropical storm on July 17 and crossed the northern Leeward Islands later that day. As it neared landfall in Puerto Rico early on July 18, upper-level winds weakened it back to a tropical depression. Claudette remained disorganized and the National Hurricane Center operationally reported that it degenerated back into a tropical wave after crossing Puerto Rico. Late on July 18, the depression struck Dominican Republic, emerged into the Caribbean Sea on the following day. Claudette struck western Cuba on July ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tropical Cyclone
A tropical cyclone is a rapidly rotating storm system characterized by a low-pressure center, a closed low-level atmospheric circulation, strong winds, and a spiral arrangement of thunderstorms that produce heavy rain and squalls. Depending on its location and strength, a tropical cyclone is referred to by different names, including hurricane (), typhoon (), tropical storm, cyclonic storm, tropical depression, or simply cyclone. A hurricane is a strong tropical cyclone that occurs in the Atlantic Ocean or northeastern Pacific Ocean, and a typhoon occurs in the northwestern Pacific Ocean. In the Indian Ocean, South Pacific, or (rarely) South Atlantic, comparable storms are referred to simply as "tropical cyclones", and such storms in the Indian Ocean can also be called "severe cyclonic storms". "Tropical" refers to the geographical origin of these systems, which form almost exclusively over tropical seas. "Cyclone" refers to their winds moving in a circle, whirling round ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Illinois Intelligencer
''The'' () is a grammatical article in English, denoting persons or things that are already or about to be mentioned, under discussion, implied or otherwise presumed familiar to listeners, readers, or speakers. It is the definite article in English. ''The'' is the most frequently used word in the English language; studies and analyses of texts have found it to account for seven percent of all printed English-language words. It is derived from gendered articles in Old English which combined in Middle English and now has a single form used with nouns of any gender. The word can be used with both singular and plural nouns, and with a noun that starts with any letter. This is different from many other languages, which have different forms of the definite article for different genders or numbers. Pronunciation In most dialects, "the" is pronounced as (with the voiced dental fricative followed by a schwa) when followed by a consonant sound, and as (homophone of the archai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1967 Chicago Blizzard
The Chicago blizzard of 1967 struck northeast Illinois and northwest Indiana on January 26–27, 1967, with a record-setting snow fall in Chicago and its suburbs before the storm abated the next morning. , it remains the greatest snowfall in one storm in Chicago history. As the blizzard was a surprise during the day with people already at work or school, it stopped the city for a few days as people dug out. "The storm was a full-blown blizzard, with 50 mph-plus northeast wind gusts creating drifts as high as 15 feet." Chronology On Tuesday January 24, the maximum temperature was but began to fall the next day with the passage of a marked cold front. In fact, the front brought arctic air from a strong 1032 mb high pressure center over the southern Canadian Prairies. By the morning of January 25, the mercury had dropped to 31 degrees F. On the other hand, an upper-level baroclinic trough, coming from the Rockies, developed a low pressure system at the surface near the Texas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Effect Snow
Lake-effect snow is produced during cooler atmospheric conditions when a cold air mass moves across long expanses of warmer lake water. The lower layer of air, heated up by the lake water, picks up water vapor from the lake and rises up through the colder air above. The vapor then freezes and is deposited on the leeward (downwind) shores. The same effect also occurs over bodies of saline water, when it is termed ocean-effect or bay-effect snow. The effect is enhanced when the moving air mass is uplifted by the orographic influence of higher elevations on the downwind shores. This uplifting can produce narrow but very intense bands of precipitation, which deposit at a rate of many inches of snow each hour, often resulting in a large amount of total snowfall. The areas affected by lake-effect snow are called snowbelts. These include areas east of the Great Lakes in North America, the west coasts of northern Japan, the Kamchatka Peninsula in Russia, and areas near the Great Salt L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Michigan
Lake Michigan is one of the five Great Lakes of North America. It is the second-largest of the Great Lakes by volume () and the third-largest by surface area (), after Lake Superior and Lake Huron. To the east, its basin is conjoined with that of Lake Huron through the wide, deep, Straits of Mackinac, giving it the same surface elevation as its easterly counterpart; the two are technically a single lake. Lake Michigan is the world's largest lake by area in one country. Located in the United States, it is shared, from west to east, by the states of Wisconsin, Illinois, Indiana, and Michigan. Ports along its shores include Milwaukee and the City of Green Bay in Wisconsin; Chicago in Illinois; Gary in Indiana; and Muskegon in Michigan. Green Bay is a large bay in its northwest, and Grand Traverse Bay is in the northeast. The word "Michigan" is believed to come from the Ojibwe word (''michi-gami'' or ''mishigami'') meaning "great water". History Some of most studied ea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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