Exam 19: Weather Patterns and Severe Storms

Tornadoes of F1 to F2 in strength account for___________ .

Continental tropical air masses are most prominent in what part of North America?

Intense tropical cyclones with winds above ___________kph are called hurricanes, typhoons, or cyclones, depending on the part of the world where they form.

Lightning is most prominent in ___________.

A maritime Polar mP. air mass is___________ .

A continental Polar cP. air mass that originates in Siberia and is subsequently altered to___________ when crossing the north Pacific

Tornadoes most often move towards what direction?

A tornado watch is issued by the National Weather Service ___________ .

Hurricanes most often develop in ___________.

Why does the central United States from Texas to the Ohio Valley experience the greatest frequency of tornadoes on Earth? What time of year do they occur and why?

Which one of the following statements is not true of tornadoes?

When an area is experiencing several consecutive days of rather constant weather, it is probably___________ .

A tropical depression has ___________winds than a tropical storm.

On a weather map, ___________fronts are shown by a line with semicircles extending from one side.

Midwestern farmers used to say "mare's tail and mackerel scales bring the storm down on you head"; Mare's tails are cirrus clouds and mackerel scales are cirrostratus. When this sequence is followed by altostratus the old farmers were talking about an approaching ___________front.

A wind shift from south or southwest to northwest is commonly associated with the passage of a ___________front.

Consider the below diagram of a pair of fronts associated with a mid- latitude cyclone. What is true of this diagram?

Examine the words and/or phrases below and determine the relationship among the majority of words/phrases. Choose the option that does not fit the pattern.

Describe the sequence of events that occur when a fully developed midlatitude cyclone passes just to your north, including cloud sequences, frontal passages, and barometric conditions.

Norwegians originally named weather fronts as analogous to fronts of___________ .