Hurricane Storm Theory

Low level wind shear is commonly associated with:

• Passing frontal systems

• Steady winds exceeding 10 knots

• Light precipitation

The suffix 'nimbus,' used in naming clouds, means

• a cloud with extensive vertical development.

• a middle cloud containing ice pellets.

• a rain cloud.

What weather phenomenon should be considered when planning a small UAS flight over mountainous terrain?

• Advection fog.

• Turbulence.

• A temperature inversion.

What are characteristics of a moist, unstable air mass?

• Poor visibility and smooth air.

• Turbulence and showery precipitation.

• Haze and smoke.

What feature is associated with a temperature inversion?

• A stable layer of air.

• Chinook winds on mountain slopes.

• An unstable layer of air.

The most frequent type of ground or surface-based temperature inversion is that which is produced by

• terrestrial radiation on a clear, relatively still night.

• warm air being lifted rapidly aloft in the vicinity of mountainous terrain.

• the movement of colder air under warm air, or the movement of warm air over cold air.

Which conditions result in the formation of frost?

• The temperature of the collecting surface is at or below freezing when small droplets of moisture fall on the surface.

• The temperature of the surrounding air is at or below freezing when small drops of moisture fall on the collecting surface.

• The temperature of the collecting surface is at or below the dewpoint of the adjacent air and the dewpoint is below freezing.

(Refer to Figure 12.) The wind direction and velocity at KJFK is from

View Figure 12

• 180° true at 4 knots.

• 180° magnetic at 4 knots.

• 040° true at 18 knots.

What measurement can be used to determine the stability of the atmosphere?

• Actual lapse rate.

• Atmospheric pressure.

• Surface temperature.

What are the standard temperature and pressure values for sea level?

• 15 °C and 29.92 inches Hg.

• 59 °C and 1013.2 millibars.

• 59 °F and 29.92 millibars.