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MET 1010 Final Exam Study Guide A 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 Answer b Hazardous weather is either imminent or occurring within the forecast area A weather watch would probably be issued for which of the following conditions a there is a chance for tornadoes tomorrow b presently extremely high winds are occurring at mountain summits c a tornado has been sighted at the outskirts of town d heavy snow has been falling over the forecast area Answer a There is a chance for tornadoes tomorrow An 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 Answer c A surface or upper level chart that interprets the present weather patterns A forecast of an extended period of dry weather would be made for a region beneath A an upper level ridge B a cold pool of air aloft C an upper level trough D the polar jet stream E a shortwave trough Answer a An upper level ridge Suppose 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 2 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 Answer d Warm and raining The 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 method c analogue method d prediction by weather types e numerical weather prediction Answer B Persistence forecast method Weather forecast that predicts that the future weather will be the same as the present weather is called a a steady state forecast b the trend method c Persistence forecasting d the analogue method e an extended weather forecast Answer c Persistence forecasting Which forecasting method assumes that weather systems will move in the same direction and at the same speed as they have been moving a persistence forecast b probability forecast c weather type forecast d climatological forecast e steady state trend forecast Answer e Steady state trend forecast 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 Answer b You are positioned in the middle of a large stationary air mass A weather forecast for the immediate future that employs the trend method is called a nowcasting b extrapolation c first order forecast d linear forecast Answer a Nowcasting By examining a surface map the movement of a surface low pressure area can be predicted based upon the a orientation of the isobars in the warm sector b region of greatest pressure decrease c movement during the previous 6 hours d all of the above Answer D All of the above Predicting the weather by weather types employs which forecasting method a probability b steady state c analogue d persistence e guess Answer C Analogue A forecast method that compares past weather maps and weather patterns to those of the present is a persistence forecasting b the analogue method c the trend method d nowcasting Answer b The analogue method The forecasting technique that produces several versions of a forecast model each beginning with slightly different weather information to reflect errors in the measurements is called a climatology forecasting b redundancy analysis c persistence forecasting d ensemble forecasting e probability forecasting Answer D Ensemble forecasting Suppose that where you live the middle of January is typically several degrees warmer than the rest of the month If you forecast this January thaw for the middle of next January you would have made a a forecast based on the analogue method b persistence forecast c forecast based on weather types d probability forecast e climatological forecast Answer E Climatological forecast A probability forecast that calls for a 40 percent chance of rain means that a there is a 40 percent chance that it will not rain within the forecast area b there is a 40 percent chance that any random place in the forecast area will receive measurable rain c it will rain on 40 percent of the forecast area d it will rain during 40 percent of the time over the forecast area Answer B There is a 40 chance of rain that any random place in a forecasted area can receive measurable rain Which of the following is presently a problem with modern day weather predictions a Computer forecast models make assumptions about the atmosphere that are not always correct b There are regions of the world where only space observations are available c Computer models do not always adequately interpret the surface s influence on the weather d The distance between grid points on some models is too large to pick up smaller scale weather features such as thunderstorms e all of the above Answer D All of the above An accurate forecast a always shows skill b may or may not show skill c never shows skill d requires complex computer equipment Answer B May or may not show skill For a forecast to show skill it must a be better than one based on persistence or climatology b be accurate to within 2C of the predicted temperature c be accurate for over more than 90 percent of the forecast area d use the analogue method of forecasting e use a probability Answer A be better than one based on persistence or climatology A prog is a a chart that interprets the current state of the atmosphere b an instrument that draws lines on an upper level chart c a new method of forecasting the weather d a forecast chart that shows the atmosphere at some future time e another name for a probability forecast Answer d a


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FSU MET 1010 - Final Exam Study Guide

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