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Class #27: Monday November 2. Thunderstorms. Review for test #3. Chapter 9, pp. 251-272; skip Box 9.2 on pp. 261-2 Chapter 10, pp. 276-302; skip Box 10.2 (p. 293) and Box 10.3 (pp. 297-299) Chapter 11, all of pages 311-347 - PowerPoint PPT Presentation
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Review for test #3
• Chapter 9, pp. 251-272; skip Box 9.2 on pp. 261-2
• Chapter 10, pp. 276-302; skip Box 10.2 (p. 293) and Box 10.3 (pp. 297-299)
• Chapter 11, all of pages 311-347• Chapter 12, only the sections on derechos (pp.
359-360) and heatbursts (pp. 362-363)
Class #27: Monday, November 2, 2009 2
Life cycle of the multicell thunderstormA squall line would extend into the slide
This storm is moving from right to left on the slide
Class #27: Monday, November 2, 2009 4
Horizontal view of the structure of a supercell thunderstormNotice the hook that appears in the precipitation pattern
Rotation is present in the updraft portion of the storm
The supercell is much larger than the air mass thunderstorm
The supercell develops from and is about as big as a multicell thunderstorm
Class #27: Monday, November 2, 2009 7
Radar reflectivity and velocity of a supercell storm
Fig. 11-24, p. 33221Class #27: Monday, November 2, 2009
Supertornado outbreak of April 3-4, 1974 with morning lifted index
Fig. 11-31, p. 33929Class #27: Monday, November 2, 2009
Flash flooding with convective storms causes huge damages
Fig. 11-36, p. 34535Class #27: Monday, November 2, 2009
Days each year with hail 0.75 inches in diameter or greater
Fig. 11-39, p. 34738Class #27: Monday, November 2, 2009
Number of derecho windstorms from 1994 to 2003
Fig. 12-9, p. 36040Class #27: Monday, November 2, 2009