Guwahati are gratefully acknowledged. We are very much indebted to Ministry of Earth Sciences (MoES)‚ Government of India for their financial support for deployment of ground based instruments and for data collection and analysis under the Severe Thunderstorms Observations and Regional Modeling (STORM) Programme. This field programme is implemented under the supervision of Prof. U.C.Mohanty‚ Indian Institute of Technology‚ New Delhi and Dr. P.V.Joesh‚ Emeritus Scientist‚ Cochin University
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video that you can post on YouTube. 3. The continent that has the greatest risk of tornadoes is: A) North America B) South America C) Eurasia D) Africa 4. The photograph to the right shows _____ clouds attached to the underside of the thunderstorm anvil. A) nimbus B) haboob C) funnel D) arc E) mammatus 5. Which statement is FALSE? A) Buoyancy force and continuity can combine to create horizontal and vertical winds. B) Pressure-gradient force and continuity can combine to create
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ATMS-100: EXAM III REVIEW SHEET The exam will be 80 questions‚ multiple choice. You may use a calculator‚ however‚ CELL PHONE USE IS PROHIBITED. Please bring a #2 pencil. Study aids: This sheet‚ lecture notes‚ textbook. Learn and be able to apply concepts; do NOT simply memorize facts. Questions? Come to office hours‚ ask your TA‚ post to the discussion board on Compass. FROM BEFORE: _What is the difference between satellites and radar? 1. Satellites: View clouds from space
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Question 1 of 9 10.0 Points Please identify the wind direction in the image below. A.Northwest B.Southwest C.Northeast D.North E.South Feedback: Good job! Question 2 of 9 10.0 Points Please identify the wind speed in the image below. A.15 knots B.20 knots C.15 MPH D.20 MPH Feedback: Good job! Question 3 of 9 10.0 Points Please identify the wind direction in the image below. A.West B.North C.East D.South Feedback: Good job! Question 4 of 9 10.0 Points Please identify
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stion 1 of 9 10.0/ 10.0 Points The main ingredients to form thunderstorms are A.Lift. B.Moisture. C.Instability. D.All the above. Answer Key: D Question 2 of 9 10.0/ 10.0 Points The most likely time for an ordinary cell thunderstorm to form is A.just after sunrise. B.late afternoon. C.just before sunrise. D.around midnight. E.at noon. Answer Key: B Question 3 of 9 10.0/ 10.0 Points Which of the following regions would you expect to have the most tornadoes in the winter
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generated inside the thunderstorm. 2. How are tornadoes formed? Tornadoes form in unusually violent thunderstorms when there is sufficient instability‚ and wind shear present in the lower atmosphere. Instability refers to warmer and more humid than usual conditions in the lower atmosphere‚ and possibly cooler than usual conditions in the upper atmosphere. Wind shear in this case refers to the wind direction changing‚ and the wind speed increasing‚ with height. 3. Parts of a thunderstorm a) Updrafts/Downdrafts-
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destruction. Chiefly‚ there are different causes for a tornado. “An MCS is a cluster of thunderstorms that act as a system and often produce severe weather” (Bluestein). Many past thunderstorms formed super cells; super cells contained fast-spinning air called a mesocyclone. “The air that rises from the ground in the vortex creates low air pressure near the ground” (Bluestein). Many tornado-forming thunderstorms have formed in low-pressured areas. “You need warm‚ moist air from the Gulf of Mexico
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violent‚ dangerous‚ rotating column of air that is in contact with both the surface of the earth and cloud. Solar flares A solar flare is a phenomenon where the sun suddenly releases a great amount of solar radiation‚ much more than normal. Thunderstorms &
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A thunderstorm is created by having three main ingredients: instability‚ uplifting of air‚ and moisture in the low and middle levels of the lower atmosphere. There are three types of thunderstorms‚ but the main type that creates the most tornados is the supercell. This is a highly organized thunderstorm. Although these are rare‚ they pose a great threat to life and property. This is like a single cell
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1. Be wary of the main storm hazards. Thunderstorm Hazards (lightening‚ hail‚ tornado‚ downpours of rain flooding‚ downbursts of air gustfronts Hurricane Hazards contain thunderstorms‚ storm surge/coastal flooding‚ high waves‚ coastal erosion 2. Describe the different types of lightning‚ how they form‚ and what happens when they strike something. Cloud-to-cloud lightening: occurs when voltage gradient within a cloud‚ or between clouds overcomes electrical resistance of air. Cloud-to-ground
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