Jon Ahlquist 9/6/2006MET1010 Intro to the Atmosphere 1Review of chap 15: Hurricanes What is the latitudinal range of the tropics? (p. 406) What characterizes seasons in the tropics? (p. 406) What is the typical wind direction in the tropics?(p. 406) Roughly what is the diameter of a mature hurricane? (Use Hurricane Elena as an example, p. 406, col. 2.) What is the eye of a hurricane? (p. 406) Roughly how wide is the eye of a hurricane? (p. 406) What is the name for the region of intense thunderstorms surrounding the eye? (p. 407) What part of a hurricane has the fastest winds and the most intense rainfall? (p. 407)Review of chap 15: Hurricanes List three conditions that must be met in the atmosphere and ocean for a hurricane to form.(p. 410, col. 1) Roughly how warm does the ocean have to be for a hurricane to form? (p. 410, col. 1) What does “converge” mean? Example (p 410, col 1): For a mass of unorganized thunderstorms to develop into a hurricane, the surface winds must converge. Many if not most Atlantic hurricanes can be traced back to what kind of trigger? (p. 410, col. 2) Hurricanes Where do hurricanes form? (fig.15.7, fig. 15.10) What is a tropical wave? Why do they travel easterly? From which continent do Atlantic tropical waves originate? (p. 406) What are the 2 main theories about how hurricanes are driven? (class lecture) What sequence of events occurs as a hurricane forms and ultimately dissipates? (pp.412-413) What is the minimum wind speed for a hurricane? (p. 412)Hurricanes Is air rising or sinking in the eye? (p. 408) If one hurricane has a smaller eye than a second hurricane, which one likely has the faster winds? Why? (discussed in lecture) What is the eye wall? (p. 407) Where are the most intense thunderstorms and fastest winds found in a hurricane? (p. 407) Describe the structure of a hurricane beyond the eye wall. (p. 407 column 2 – p. 408)Hurricanes What is the typical lifetime of a hurricane? (lecture) Name two factors that can kill a hurricane. (lecture) If Atlantic hurricanes stay over water, where do they usually go which results in their death?Why do they move in that direction? (p. 414) On what side of a hurricane are the fastest hurricane winds found? (class lecture) When a hurricane comes on shore, which area relative to the storm’s center (the eye) gets the most rain? Why? (class lecture)Hurricanes What does “storm surge” mean? What is its importance? Which side of a hurricane has the worst storm surge? (pp. 417-418) Do tornadoes ever occur in hurricanes? (p. 418) Over 1800 deaths are attributed to Hurricane Katrina, but what disaster, also a hurricane, was the biggest killer in the US history? (p. 423, col. 1) What hurricane (anywhere) is known to have killed the most people? (p. 423, col. 1) What is the name of the system used to rank hurricane strength? (pp. 424-425) Is it possible for hurricanes in different years to have the same name? (p. 426)Jon Ahlquist 9/6/2006MET1010 Intro to the Atmosphere 2Hurricanes What is storm surge? (p. 418) When a hurricane makes landfall, which area will experience the fastest winds? Highest sea level? Most rain? (lecture) What is the direction of the low-level winds for a Northern Hemisphere hurricane? What about upper-level winds? (p. 408, fig. 15.3) What is the name of the scale that assigns a number to the strength of a hurricane? (pp. 424-425) What numerical categories of hurricanes are regarded as “major hurricanes”? (p. 424, col. 2) What causes most of the damage from a hurricane? How often do tornadoes occur with
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