Post-Christmas winter storm to bring heavy snow to the north, heavy rain/strong thunderstorms to the south, and potential travel troubles across parts of the Central U.S. beginning Wednesday. Travel likely to be very difficult, if not impossible, across portions of the middle part of the U.S.
Valid Tue Dec 25 2018 – Thu Dec 27 2018
…Heavy mountain snows likely across the Sierras, central Great Basin, and southern Rockies… by Wednesday. As much as a foot or more of snow is possible in the highest elevations with winter storm warnings and winter weather advisories in effect for many of these locations.
As this system emerges into the Plains towards the end of the short range, a significant winter storm is likely to develop across the Central U.S. by Wednesday. Heavy and accumulating snowfall looks to begin on Wednesday afternoon and evening across parts of the Northern and Central Plains, spreading eastward into the Upper Midwest and Great Lakes beyond the short range period.
Some light freezing rain may also be possible within the transition zone between rain and snow for parts of the Central Plains on Wednesday.
Elsewhere, some light snow is possible across across parts of the Great Lakes and the Ohio Valley tonight into Tuesday in association with a pair of weak systems in the upper levels.
Christmas Day looks to be warmer than average east of the Rockies and ahead of the approaching winter storm. In the West, temperatures drop to below average Tuesday and Wednesday, with afternoon highs as much as 10 to 20 degrees below normal across parts of the Southwest.
https://www.wpc.ncep.noaa.gov/discussions/hpcdiscussions.php?disc=pmdspd
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December 24, 2018 at 08:21PM
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