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Weather forecasts are vital to daily activities around the world.
It seems, more often than not, that meteorologists have difficulty providing accurate weather forecasts. A forecast of Saturday s weather given on Thursday is modified on Friday, and neither matches the weather you experience on Saturday. According to The Handy Weather Answer Book, predictions of general weather patterns some 5.5 days in the future are as accurate as those for 3.5 days made in 1977. The AMS has also issued a policy statement on weather forecasting accuracy . In addition, general areas within which severe storms and thunderstorms are likely to occur can often be specified up to 48 hours in advance.