Weather is always a mixed bag. Are you ready to handle it?

1. 1) What type of cloud is this, and what weather is associated with it?
   Ironpiping

   Nimbostratus is a type of cloud associated with a thick gray cloud layer and rain or snow without lightning or thunder.

   Nimbostratus is a type of cloud associated with a thick gray cloud layer and rain or snow without lightning or thunder.

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2. 2) Which answer describes a low pressure system near the surface (northern hemisphere)?

   A low pressure system at the surface flows counter-clockwise and converges at the center of the low pressure system.

   A low pressure system at the surface flows counter-clockwise and converges at the center of the low pressure system.

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3. 3) What three things are needed to form a thunderstorm?

   High humidity, unstable atmosphere, and a lifting force are the ingredients needed to make a thunderstorm.

   High humidity, unstable atmosphere, and a lifting force are the ingredients needed to make a thunderstorm.

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4. 4) What type of fog is associated with moist air moving over a cool surface?

   Advection fog is associated with moist air moving over a cooler surface.

   Advection fog is associated with moist air moving over a cooler surface.

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5. 5) You're at Seattle-Tacoma International airport (433' MSL) and it's a standard day (ISA). Approximately what altitude would you find a temperature of -1 degrees Celsius?

   The standard lapse rate is 2 degrees for every thousand feet. ISA standard temperature at 433'MSL is approximately 14 degrees. The difference between 14 and -1 is 15 degrees. Dividing this value by 2 (two degrees per thousand feet) will give 7.5. Multiply this value by 1,000 and you get an altitude of 7,500 ft.

   The standard lapse rate is 2 degrees for every thousand feet. ISA standard temperature at 433'MSL is approximately 14 degrees. The difference between 14 and -1 is 15 degrees. Dividing this value by 2 (two degrees per thousand feet) will give 7.5. Multiply this value by 1,000 and you get an altitude of 7,500 ft.

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6. 6) What type of icing did this aircraft accumulate?
   NASA / Lewis Research Center

   Mixed ice is a cloudy combination of clear and rime ice. It's often found in stratiform clouds, with the most intense icing near the top of the cloud. 

   Mixed ice is a cloudy combination of clear and rime ice. It's often found in stratiform clouds, with the most intense icing near the top of the cloud. 

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