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Rhea Thomas
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« on: September 05, 2009, 03:05:37 AM » |
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A “mackerel sky” adds to a striking sunset scene in Grimsby, Lincolnshire, England. Ripples of altocumulus or cirrocumulus clouds resembling the markings of a king Mackerel gives the phenomenon its name.
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Rhea Thomas
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« Reply #1 on: September 05, 2009, 03:06:08 AM » |
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Fluffy altocumulus undulatus clouds stain the sky red above a row of trees. These mid-level clouds, which form above 6,500 feet (2,000 meters), often herald an approaching storm. |
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Rhea Thomas
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« Reply #2 on: September 05, 2009, 03:06:51 AM » |
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 San Francisco’s Golden Gate Bridge appears to float on a sea of surrounding clouds. Such low-level clouds, called stratus clouds, occur below 6,500 feet (2,000 meters) and often bring rain or snow. Clouds that touch the ground are known as fog. |
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Rhea Thomas
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« Reply #3 on: September 05, 2009, 03:07:34 AM » |
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 The summit of Washington’s Mount Rainier lies hidden beneath a stack of horizontally layered lenticular clouds. These clouds are formed by high winds blowing over rough terrain and are sometimes described as a “stack of pancakes”. |
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Rhea Thomas
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« Reply #4 on: September 05, 2009, 03:08:12 AM » |
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 The beauty of a Tassajara, California, sunset is enhanced by towering cumulonimbus clouds—but they will likely spoil the serene scene. These tallest of all clouds often produce violent storms of rain, thunder, lightning, hail, and high winds. |
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Rhea Thomas
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« Reply #5 on: September 05, 2009, 03:10:40 AM » |
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 The bright lights of Tucson, Arizona, are more than matched by a flash of lightning far above the city skyline. The sunset scene shows a classic cumulonimbus cloud formation. |
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