Chapter 9 A wind shift in a counterclockwise direction from E to N is a backing wind shift A wind shift in a clockwise direction from S to W is a veering wind shift A warm front approaches progression of clouds your most likely to see cirrus altostratus stratus nimbostratus Tornadoes are associated with which type of front A cold front moving into moist air A trough aloft is associated with lows the surface A warm front is said to exist when advancing warm air overrides retreating cold air The lifting of air cloud formation results and rain is more gentle gradual for a warm front The violent nature of weather by a cold front is because Steep slope fast forward motion of front Why is the number and intensity of wave cyclones greatest during fall winter and spring months Temperatures are below freezing Which best describes the reason high pressure systems bring clear skies sinking air aloft Which is common to both cold and warm fronts lifting of warm air over cold Compared to other types of fronts the weather associated with a cold front is more violent but of shorter duration Chapter 10 About how many thunderstorms take place on Earth every day 1800 2000 Which U S state experiences the most thunderstorms each year FL Which of the following should have the steepest pressure gradient tornado Which of the following is likely during the mature stage of a thunderstorm Lightning Which type of lightning is least likely Cloud to cloud lightning Thunderstorms form when warm humid air rises in an unstable environment The most dangerous weather is produced by a thunderstorm called a supercell Because of the tremendous pressure gradient associated with a strong tornado maximum winds approach 300 MPH Squall lines are relatively narrow elongated bands of thunderstorms that develop in the warm sector of a middle latitude cyclone Over the last 20 years which has caused the FEWEST weather related deaths hurricanes What causes the dissipating stage of a thunderstorm spreading downdraft cuts off air inflow Why do tornadoes in the central U S occur during spring months air mass contrasts are greatest Why is strong heating of the ground associated with thunderstorms leads to greater instability Conventional radar measures rainfall intensity Why is very humid air near the surface necessary for severe thunderstorms More latent heat energy available as storm An air mass thunderstorm is most intense during the mature stage The approximate lifetime of a thunderstorm cell is about 20 30 minutes In which places are thunderstorms most common Southern Mississippi Tornadoes are most frequent during the late spring and early summer Tornadoes most often move toward what direction NE At what time of day is an air mass thunderstorm likely to develop Mid afternoon Heat lightning occurs more than 20 kilometers from observer Downdrafts totally dominate the dissipating stage in the development of a thunderstorm This type of cloud brings thunderstorms Cumunolimbus clouds If you see lightning and then hear thunder 10 seconds later the lightning was 3300 meters or 2 05 miles away Chapter 11 The deadliest hurricane happened in Texas How many deaths occurred 8 000 10 000 A hurricane must have sustained wind speeds of at least 65 knots 74 mph What re hurricanes known as when in the western Pacific Typhoons What are hurricanes known as in the Indian Ocean Cyclones At what stage do hurricanes receive an official name 35 65 knots Tropical storm When alphabetical hurricane names are exhausted in a season they resort to Greek alphabet When a cyclone s winds don t exceed 37mph it s called a Tropical Depression What is the single greatest tool used for observing tropical cyclones Satellite Imagery An announcement aimed at specific coastal areas that a hurricane poses a possible threat generally within 36 hours is called a hurricane warning What category of the Saffir Simpson is the strongest 5 The very center of a hurricane is called the eye Hurricanes develop in late summer when ocean waters have reached 27 C 80 6 F Why don t hurricanes develop on near the equator No coriolis effect Since detection and tracking of hurricanes are now quite accurate why does damage from these storms continue to increase continued development of coastal areas The initial detection of tropical storms that may be hurricanes is accomplished by satellites Why do surface wind speeds increase toward the center of a hurricane conservation of angular momentum Why do hurricanes in the Atlantic move toward the west during their early stages Compared to the North Atlantic hurricanes form in the South Atlantic rarely What is the approximate diameter of a mature hurricane Prevailing winds from the east Why do hurricanes initially form only in the tropics warm water temps Which is the primary source of energy that fuels a hurricane and keeps it growing Moist Warmth warm water causes humid air above it An easterly wave is the primary cause of hurricane development What determines when a tropical depression or storm is given hurricane status Wind speed Why is the eye region of a hurricane largely free of precipitation and clouds Subsiding air What causes the winds of a hurricane to be so fast Strong pressure gradient What part of a hurricane produces fastest wind speeds and greatest storm surge Vertical Wall A hurricane moves onto land it declines in intensity because Friction Lack of warm moist air What of hurricanes that make landfall produce at least 1 tornado Less than 1 Which time span should hurricane formation in the North Atlantic peak August September The Saffir Simpson scale is used to establish categories of hurricane intensity The eye wall of a hurricane where most damaging winds and intense rainfall is found What s the order of storm intensity in terms of increasing wind speed tropical depression tropical storm hurricane The most important tool for detecting and monitoring hurricanes is Doppler radar A GPS dropwindsonde is used for determined vertical pressure temperature humidity over an area If a hurricane warning is issued you can expect heavy rainfall and strong winds Chapter 16 Secondary rainbows result from light refracted 2x within a raindrop When sunlight interacts w a raindrop to produce a rainbow how many refractive events occur for each drop One the speed of light in water is Fastest for red light Rainbows are always seen with the sun behind the observer The phenomenon that results from the speed of light changing as it passes into
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