| 1. | The blocking high formed near Greenland this week and then drifted toward Canada.
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| 2. | Greenland is a favored place for blocking highs to form.
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| 3. | Sometimes the west-to-east flow of the jet stream is halted by a blocking high.
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| 4. | However, in most of New South Wales this blocking high produced uninterrupted dry weather.
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| 5. | Low-pressure systems stagnate in the vicinity of a blocking high, setting the stage for protracted precipitation.
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| 6. | The slow chill in Rapid City came courtesy of a blocking high pressure system over northern Canada.
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| 7. | A series of blocking high pressure systems over Canada diverted a branch jet stream southward over the nation.
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| 8. | This week, the Pacific jet stream was diverted south by a blocking high pressure system over western Canada.
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| 9. | An arctic air mass has been trapped across interior Alaska by a blocking high-pressure system over the Bering Sea.
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| 10. | Awnings can add shade by blocking high-angle sunlight and are most effective on the south side of a building.
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