A high-pressure ridge that has set up over the Southern Plains has been really persistent there. It has pushed a lot of active or violent weather to the east.

阿尔恩特说，“在南部平原区形成的高压脊十分顽固，引起了其东部地区活跃甚至是猛烈的天气现象。”

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The warm high ridge at the middle and low troposphere and the lower pressure of the ground all provide the good circulation background of this heavy fog.

对流层中低层的暖脊和地面均压场的维持是此次大雾形成的良好环流背景。

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Sunday will remain very mild with a ridge of high pressure building northwards again.

星期日将保持非常温和，一高压脊向北再进。

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Second, include a high-pressure ridge off the coast of Greenland is keeping the storm from the usual course away from the U.S. mainland.

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