| 11. | Alaska's memorable warm-up was nurtured by an expansive ridge of high pressure centered over northwest Canada.
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| 12. | This is attributed to a persistent subtropical ridge of high pressure located north of the cyclone.
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| 13. | The following day a decreasing ridge of high pressure to the north and a inHg ).
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| 14. | An expansive ridge of high pressure will spread over the upper Middle West and Northeast Thursday.
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| 15. | A strong ridge of high pressure continued to push the system west, towards the Caribbean Sea.
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| 16. | Much of southern Africa will be partly sunny and dry under a ridge of high pressure.
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| 17. | But much of the Plains was dry and hot, dominated by a ridge of high pressure.
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| 18. | A ridge of high pressure was to bring some afternoon thunderstorms in central and southern Florida.
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| 19. | Much of the West was dry as a ridge of high pressure settled over the Great Basin.
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| 20. | A ridge of high pressure will stretch down the St . Lawrence Valley to the Gulf Coast.
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