SEVERE WEATHER NOTES INB Pg. 28-29

Thunderstorm vs. Hurricane You have your table partner will have 20 mins to develop a sketch and explanation of either the formation of a thunderstorm or Hurricane. Requirements: -develop a labeled sketch of your severe weather -show the formation of your severe weather through your diagram labels -add any important information or mind-blowing facts! -plan a step-by-step tutorial on how to draw your severe weather & teach how they form!

Must have lightning- warm molecules rise & create friction with cold molecules falling Thunder-rapidly expanding hot air causing vibrations Thunderstorms Sudden change in pressure…cause wind Unstable air due to Updrafts and downdrafts of wind Occur on humid afternoons in spring/summer (mostly) Cumulonimbus clouds: form when WARM air is forced upward at COLD front.

Humid air rises to form clouds Rain/Major flooding Saffir-simpson hurricane scale Only forms over warm H2O hurricane Slows down over land- due to friction with ground Eye=calm center -warm, humid air rises & spirals upwards, dry air moves to low pressure center Coriolis force causes rotation Winds form due to pressure changes

7. RANKING

Hurricane Clip https://www.youtube.com/watch?v=ZDRbjGqXDLI

Earth Sci. INB open note challenge 1. __________________ is the measure of moisture in the air? 2. Which ‘weighs’ more?? Dry Air (nitrogen &oxygen) or Air with water vapor? 3. This gas _________ drives Storm systems?? 4. Create a LABELED diagram to show how dew forms. 5. Why do winds not blow directly (in a straight line) from high pressure to low pressure. 6. _________is the boundary where two different air masses meet, typically where precipitation occurs. 7. Name the scale used to classify the “strength” of a hurricane. 8. List the 3 requirements to produce a cloud. 9. _________ is created by friction between the rising updraft and the falling downdraft in a cumulonimbus cloud? 10. Describe the difference in formation of advection fog and radiation/ground fog. 11. What is the necessary ingredient for a hurricane to form? Bonus: What type of front is more likely to bring HEAVY precipitation & thunderstorms? Earth Sci. INB open note challenge

Part 1: Plot the path of Hurricane Irma Part 1: Plot the path of Hurricane Irma. -Make one point for each day -next to the point, identify if it’s a (TD, TS, 1, 2, 3, 4, or 5 classification) -connect the point in a line Pt. 1 Analysis Questions: #1- Where did Irma start and WHY? #2- Provide a reason for the fluctuation in hurricane ratings on September 8th & 9th. #3- Describe a scientific reason why Irma dissipated on September 12th? Part 2: Graph Hurricane Irma Pressure and Wind speed data over time -Pressure scale: 900-1010 millibars (mb) -Wind speed scale: 0-160 mphs Pt. 2 Analysis Questions: #1- At what air pressure did Irma's winds become fast enough to classify it as a hurricane? In other words, at what pressure did the wind speed reach an average of 65 knots or higher? #2- What was Irma's minimum air pressure? What was its maximum wind speed? Give a specific example (a range of dates and times) when the air pressure decreased and tell what happened to the wind speed over that time. Describe another specific example of what happened to wind speed while pressure increased. #3- Why does low pressure result in higher wind speeds? Hurricane Lab