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9. Which thunderstorm ingredient is most responsible for directly controlling th

ID: 105161 • Letter: 9

Question

9. Which thunderstorm ingredient is most responsible for directly controlling the speed that air rises within a thunderstorm updraft?

A) Lift

B) Moisture

C) Instability

D) Vertical wind shear

E) None of these are particularly important for controlling updraft speed

10. On March 18, 1925, a thunderstorm produced a violent F5 (the most damaging category) tornado that tracked from south central Missouri into southwest Indiana, a track of over 200 miles. What type of storm was most likely responsible for producing this violent tornado?

A) Ordinary/single cell thunderstorm

B) Multicell cluster thunderstorm

C) Multicell line thunderstorm

D) Supercell thunderstorm

E) None of these are correct

11. On June 22, 2003, a record (at the time) was set in Aurora, NE for the largest hail stone ever recorded, with a diameter of seven inches. What type of storm was most likely responsible for this hail?

A) Ordinary/single cell thunderstorm

B) Multicell cluster thunderstorm

C) Multicell line thunderstorm

D) Supercell thunderstorm

E) None of these are correct

12. On July 4 & 5, 1999, thunderstorm wind gusts were produced from North Dakota all the way to Maine, including estimated gusts of 110 mph (extremely strong). What type of thunderstorm was most likely responsible for producing these damaging straight line winds?

A) Ordinary/single cell thunderstorm

B) Multicell cluster thunderstorm

C) Multicell line thunderstorm

D) Supercell thunderstorm

E) None of these are correct

13. Assuming nothing changes aloft, which one of these changes to the weather at the surface would do the most to make the atmosphere more unstable?

A) Surface conditions becoming warmer and more humid

B) Surface conditions becoming cooler and more humid

C) Surface conditions becoming warmer and drier

D) Surface conditions becoming cooler and drier

E) None of these would make the atmosphere more unstable

14. In which month of the year would you most expect to experience a violent tornado in Birmingham, Alabama?

A) February

B) March

C) April

D) May

E) June

F) November

15. In the summer, thunderstorms often develop during the afternoon, during the peak heating of the day. If the winds are weak, and you experience a thunderstorm that develops and dissipates within 30-45 minutes, what type of thunderstorm did you likely experience?

A) Ordinary/single cell thunderstorm

B) Multicell cluster thunderstorm

C) Multicell line thunderstorm

D) Supercell thunderstorm

E) None of these are correct

16. Given the following conditions and a sufficient amount of lift, would you expect to experience thunderstorms, supercells, and numerous/strong tornadoes?

CAPE: 2,000 J/kg

Surface Dewpoint: 57°F

0-6 km Vertical Wind Shear: 70 knots

0-3 km Storm Relative Helicity: 400 m2/s2

0-1 km Storm Relative Helicity: 250 m2/s2

A) No thunderstorms, no supercells, and no tornadoes

B) No thunderstorms, no supercells, and (yes) tornadoes

C) No thunderstorms, (yes) supercells, and no tornadoes

D) No thunderstorms, (yes) supercells, and (yes) tornadoes

E) (Yes) thunderstorms, no supercells, and no tornadoes

F) (Yes) thunderstorms, no supercells, and (yes) tornadoes

G) (Yes) thunderstorms, (yes) supercells, and no tornadoes

H) (Yes) thunderstorms, (yes) supercells, and (yes) tornadoes

17. Given the following conditions and a sufficient amount of lift, would you expect to experience thunderstorms, supercells, and numerous/strong tornadoes?

CAPE: 6,000 J/kg

Surface Dewpoint: 78°F

0-6 km Vertical Wind Shear: 10 knots

0-3 km Storm Relative Helicity: 50 m2/s2

0-1 km Storm Relative Helicity: 25 m2/s2

A) No thunderstorms, no supercells, and no tornadoes

B) No thunderstorms, no supercells, and (yes) tornadoes

C) No thunderstorms, (yes) supercells, and no tornadoes

D) No thunderstorms, (yes) supercells, and (yes) tornadoes

E) (Yes) thunderstorms, no supercells, and no tornadoes

F) (Yes) thunderstorms, no supercells, and (yes) tornadoes

G) (Yes) thunderstorms, (yes) supercells, and no tornadoes

H) (Yes) thunderstorms, (yes) supercells, and (yes) tornadoes

18. Given the following conditions and a sufficient amount of lift, would you expect to experience thunderstorms, supercells, and numerous/strong tornadoes?

CAPE: 3,000 J/kg

Surface Dewpoint: 66°F

0-6 km Vertical Wind Shear: 50 knots

0-3 km Storm Relative Helicity: 300 m2/s2

0-1 km Storm Relative Helicity: 200 m2/s2

A) No thunderstorms, no supercells, and no tornadoes

B) No thunderstorms, no supercells, and (yes) tornadoes

C) No thunderstorms, (yes) supercells, and no tornadoes

D) No thunderstorms, (yes) supercells, and (yes) tornadoes

E) (Yes) thunderstorms, no supercells, and no tornadoes

F) (Yes) thunderstorms, no supercells, and (yes) tornadoes

G) (Yes) thunderstorms, (yes) supercells, and no tornadoes

H) (Yes) thunderstorms, (yes) supercells, and (yes) tornadoes

Explanation / Answer

9 Quation: answer : a) lift