| 11. | This often causes freezing fog on mountaintops, where the cloud ceiling would not otherwise be low enough.
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| 12. | The overcast skies and low cloud ceiling at the crash site also contributed to the severity of the crash.
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| 13. | Rescue efforts were hampered by continuing rain and a low cloud ceiling, which grounded National Guard helicopters September 15.
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| 14. | It departed San Francisco in good visibility, with a cloud ceiling between, and had sufficient fuel to last until midnight.
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| 15. | The jet was not fully cleared for instrument flight, mandating a lower cloud ceiling of more than . " Major"
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| 16. | Because of the strong wind and the low cloud ceiling it was considered impracticable to attempt even these small formation flights.
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| 17. | With the cloud ceiling over the airport at 300 feet, " they'd have to get down low to see under it ."
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| 18. | The rescue had been hampered by weather, with a low cloud ceiling that made it difficult to dispatch helicopters to the mountain.
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| 19. | That could improve the delays at San Francisco when the cloud ceiling begins to drop, said Marchi of the Airports Council International.
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| 20. | A question for all the professional pilots here : What is the minimum cloud ceiling and visibility for an NDB landing approach?
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