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NAM 500 MB Height Trends
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NAM 500-mb Height Trends

Displayed below are 6-h forecasts of 500-mb geopotential height from the most recent 00Z or 12Z NAM model run (thick dark green contours) from F00-F84. To assist in visualizing model trends, forecasts from the NAM runs initialized 12 h and 24 h earlier are overlain at the same valid time. The thickness and darkness of the contours decreases with the age of each model run. The user can select a difference field between the current NAM run and that from the NAM run 12 h or 24 h ago. The difference is shaded according to the color scale at the bottom left.


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Page last modified: Thursday, 12-May-2022 19:34:47 UTC








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