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Exam 13: Weather Forecasting

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Question 1

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Monthly and seasonal forecasts make specific predictions of rain or snow.

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verified

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Question 2

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​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) ​a persistence forecast.
D) ​the analogue method.
E) ​an extended weather forecast.

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C

Question 3

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​____________________, which includes more than 175 nations-is responsible for the international exchange of weather data and certifies that the observation procedures do not vary among nations.

A weather ____________________ indicates that atmospheric conditions favor hazardous weather occurring over a particular region during a specified time period. A weather ____________________, on the other hand, indicates that hazardous weather is either imminent or actually occurring within the specified forecast area. Advisories are issued to inform the public of less hazardous conditions caused by wind, dust, fog, snow, sleet, or freezing rain.

Assuming you know last night's minimum temperature, what weather information would you use to predict tonight's minimum temperature?​

In one forecast, west of San Francisco, the flow is meridional with a cut-off warm, upper high situated just south of Alaska. To the south, both east and west of the high are troughs. Because the shape of this flow around the high resembles the Greek letter ____, the high and its accompanying ridge are known as a(n) ____ high.​

The forecasting of weather by a computer is known as​

According to the National Weather Service, the subjective term "fair" implies a rather pleasant weather situation.

​A prog is

The analysis of a(n) ____ can be especially helpful when making a short-range forecast that covers a relatively small area, such as the mesoscale.​

​Computer forecast models make certain assumptions about the atmosphere that are not always correct.

Meteorologists interpret the weather patterns and then correct any errors that may be present. The final chart is referred to as a prediction.

What type of forecast method do you think would be most appropriate for a short range (6 to 12 hours), a medium range (24 to 48 hours), a long range (5 to 10 days), or a seasonal (3 month) forecast?​

Why do clouds tend to reduce temperature during the day but increase temperatures at night?​

​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

How does a prog differ from an analysis?

​Surface pressure systems tend to move in the same direction as the wind at 5500 m (18,000 ft)-the 500-mb level. The speed at which surface systems move is about double the speed of the winds at this level.

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​

​The routine daily forecasting of weather by computers using mathematical equations has come to be known as ____________________.

​Which forecasting method assumes that weather systems will move in the same direction and at the same speed as they have been moving?