| 21. | The ice crystals in cirrus clouds have different shapes in addition to different sizes.
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| 22. | These high cirrus clouds may be the first signs of an approaching tropical cyclone.
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| 23. | Patches of cirrus clouds and coastal fog may dull the weather along the Coast.
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| 24. | Like other cirrus clouds, cirrus fibratus occur at high altitudes.
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| 25. | Cirrus clouds typically form between 20, 000 and 50, 000 feet above sea level.
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| 26. | Thin cirrus clouds can also indicate high probability of CAT.
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| 27. | Individual cirrus cloud formations can be the remnants of anvil clouds formed by thunderstorms.
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| 28. | Even light cirrus clouds reduce this to 50 %, stronger cirrus clouds to 40 %.
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| 29. | Filaments of high, thin cirrus clouds will block the sunshine at times across the region.
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| 30. | A veil of cirrus clouds will obscure the sun from Texas to the interior Southeast.
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