Rain today. Possibly snow tonight and tomorrow.

The weather report goes out on radio and television. Highway police prepare to slow traffic on icy roads. And children hope school buses will be snowbound.

All over the world weathermen look for clues to weather changes. From the ground they watch the clouds, shifting from place to place, changing their shape and color. Airplanes and balloons bring information from above the clouds. And now a man-made satellite sends pictures from outer space.

Often a heavy black cloud brings a thunderstorm. A cloud that twists like a giant rope on end means "Tornado!"

Why? How is a thunderstorm different from a hurricane or tornado? What is sleet? How can a four-inch slice of snow stand alone on a twig?

In this new Junior Science Book, Nancy Larrick gives the scientific answers to these questions and many more. The language is simple and the word pictures are delightfully clear. The book is beautifully illustrated with two-color drawings throughout.

From the dust jacket