How Meteorologists Predict the Weather

Picture a group of friends stargazing in a meadow late at night. Gathering clouds obscure the constellations. Then drops of rain chase the comrades off the grass. They jump to the safety of their cars as lighting strikes the ground. Seconds later, thunder reaches their ears. It turned out to be a bad night for stargazing.
Accurate weather predictions save folks from getting caught unprepared in inclement weather. Predicting the weather seconds ahead is straightforward; for example, a lightning bolt at one point in time means that thunder will follow within a few seconds. Predicting minutes ahead is more challenging; a grey cloud may or may not pour down rain before the end of a football match. Skilled amateurs can predict the weather hours ahead with rudimentary equipment. But it takes professionals with supercomputers to forecast the weather days ahead.

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