A persistence forecast could be quite accurate when:a.
a frontal system approaches your location at constant speed.
b. you are positioned in the middle of a large, stationary air mass.
c. the weather has been unusually cold for several days.
d. upper level winds blow straight from west to east.
Question 2The least accurate forecast method of predicting the weather two days into the future during
changeable weather conditions is usually the:a.
trend method.
b. persistence forecast.
c. analogue method.
d. prediction by weather types.
e. numerical weather prediction.
Question 3Suppose it is warm and raining, and a cold front is moving toward your location. Directly behind
the cold front it is cold and snowing. Still further behind the front the weather is cold and
clearing. If the front is scheduled to pass your area in 6 hours, a persistence forecast for your area
for 12 hours from now would be:
a. cold and snowing.
b. cold and clearing.
c. cold and cloudy.
d. warm and raining.
e. not enough information on which to base a forecast.
Question 4A forecast of an extended period of dry weather would be made for a region beneath:a.
an upper-level trough.
b. the polar jet stream.
c. a cold pool of air aloft.
d. an upper-level ridge.
e. a shortwave trough
Question 5An analysis is:
a. a forecast chart that shows the atmosphere at some future time.
b. a forecast chart that compares past weather maps with those of the present.
c. a surface or upper-level chart that interprets the present weather patterns.
d. a forecast method used in long range weather prediction.
e. a method used to determine skill in predicting the weather.
Question 6A weather warning indicates that:a.
the atmospheric conditions are favorable for hazardous weather over a particular region.
b. hazardous weather is either imminent or occurring within the forecast area.
c. hazardous weather is likely to occur within the forecast area during the next 24 hours.
d. hazardous weather is frequently observed in a particular region.
Question 7The much-studied temperature record of the past 140 years is derived from land-based
observations only.
a. true
b. false
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