weather

915

Lightning in clouds
A normal lightning strike to the ground is the result of the attraction between the negatively charged cloud and the positive charge on the ground below. What causes lightning to strike from one negatively charged cloud to another?

924

Trees with yellow leaves
Although we have had several freezes, the leaves here are just starting to change. Every year, the leaves start changing colors in the North first, and then the color change spreads South. This is not due to the temperature. What causes it?

925

Sandstone cliff
As winter approaches here in Johnson Canyon, I will be paying close attention to katabatic winds. Without looking it up, what are katabatic winds, and why would they be important to us in the canyon?

928

Snow on trees
We have already had our first snow of the year. The day it snowed, the low was only 36°F. If the temperature is above freezing, why did the precipitation not fall as rain?

933

Cat in snow
This is our newest cat, Little Bit. He is enjoying his first big snow. Is snow classified as a rock? A mineral? Both? Neither?

941

Cat in snow
Although we have had several days with lots of sun and temperatures up in the 60's, there is still a lot of snow on the ground. Why hasn't it melted away?

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