| 11. | A high pressure system brought clear skies to the Tennessee Valley and Mid-Atlantic states.
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| 12. | An expansive high pressure system will promote dry weather over the West on Monday.
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| 13. | At this time, a polar high pressure system moved off the coast of Japan.
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| 14. | The tranquil high pressure systems of fall favor pollution.
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| 15. | The 2008 Southern US Heatwave is being caused by a well entrenched High pressure system.
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| 16. | Shortly after, Nicole slowed tremendously, as it became stationed south of a high pressure system.
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| 17. | A Bermuda high pressure system will circulate tropical air into the southeastern states, including Florida.
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| 18. | The tranquil high pressure systems of autumn favor pollution.
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| 19. | High pressure systems produce currents of sinking air, which dry upon descent through the atmosphere.
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| 20. | Meanwhile, a high pressure system will bring sunshine from Morocco through Algeria, Tunisia and Mauritania.
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