Water Vapor, with 500 mb Heights and Vorticity, at 12z, 09/17

water vapor image

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Water vapor image at 12z, 9/17/04. Overlaid on the water vapor image are 0-hr Eta 500 mb heights and vorticity. The upstream short-wave of interest, that had been over the Dakotas 12 hours earlier, was now over northern Illinois.

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