Class #27: Monday November 2

Thunderstorms

1Class #27: Monday, November 2, 2009

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

Class #27: Monday, November 2, 2009 3

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

Mesoscale convective complex near the ridge of a 250mb wave

Class #27: Monday, November 2, 2009 5

Visual features of a supercell thunderstorm

Class #27: Monday, November 2, 2009 6

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

Class #27: Monday, November 2, 2009 8

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Fig. 11-7, p. 31715Class #27: Monday, November 2, 2009

Fig. 11-20, p. 32816Class #27: Monday, November 2, 2009

Box 11-1, p. 32917Class #27: Monday, November 2, 2009

Fig. 11-21, p. 33018Class #27: Monday, November 2, 2009

Fig. 11-22, p. 33119Class #27: Monday, November 2, 2009

Fig. 11-23, p. 33120Class #27: Monday, November 2, 2009

Radar reflectivity and velocity of a supercell storm

Fig. 11-24, p. 33221Class #27: Monday, November 2, 2009

Table 11-3, p. 33322Class #27: Monday, November 2, 2009

Fig. 11-25, p. 33323Class #27: Monday, November 2, 2009

Fig. 11-26, p. 33424Class #27: Monday, November 2, 2009

A tornado can have multiple vortices

Fig. 11-27, p. 33525Class #27: Monday, November 2, 2009

Fig. 11-28, p. 33526Class #27: Monday, November 2, 2009

Fig. 11-29, p. 33627Class #27: Monday, November 2, 2009

Fig. 11-30, p. 33728Class #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

This factory had a storm shelter

Box 11-3, p. 34030Class #27: Monday, November 2, 2009

Fig. 11-32, p. 34131Class #27: Monday, November 2, 2009

Fig. 11-33, p. 34232Class #27: Monday, November 2, 2009

Fig. 11-34, p. 34333Class #27: Monday, November 2, 2009

Frequency of lightning

Fig. 11-35, p. 34434Class #27: Monday, November 2, 2009

Flash flooding with convective storms causes huge damages

Fig. 11-36, p. 34535Class #27: Monday, November 2, 2009

Fig. 11-37, p. 34636Class #27: Monday, November 2, 2009

Fig. 11-38, p. 34637Class #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

Fig. 12-8, p. 36039Class #27: Monday, November 2, 2009

Number of derecho windstorms from 1994 to 2003

Fig. 12-9, p. 36040Class #27: Monday, November 2, 2009

Fig. 12-10, p. 36341Class #27: Monday, November 2, 2009