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Short Range Public Discussion
 
(Caution: Version displayed is not the latest version. - Issued 0830Z Dec 08, 2022)
 
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Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 330 AM EST Thu Dec 08 2022 Valid 12Z Thu Dec 08 2022 - 12Z Sat Dec 10 2022 ...Episodes of moderate to heavy rain expected to track across the southern Plains to the mid-Mississippi Valley the next couple of days... ...Wintry weather spreading into the central/northern Plains today and into the upper Midwest on Friday... ...More heavy precipitation expected for the Pacific Northwest and northern California today before the next round arriving by Friday night... A meandering front interacting with an energetic jet stream from the subtropics will continue to trigger episodes of active weather across the south-central portion of the mainland U.S. over the next couple of days. This interaction has already set up a stream of moderate to heavy rain from northern Texas across Oklahoma toward the mid-Mississippi Valley early this morning to the north of the meandering front. The focus of the heaviest rains will gradually shift east into the mid-Mississippi and Tennessee Valleys as the day progresses before reaching into Virginia and North Carolina tonight with a gradual tapering of rain intensity. Behind this moisture stream, a low pressure wave is forecast to develop along the front and move across the central Plains tonight and into Friday with a renewed round of moderate rainfall tracking through the mid-Mississippi and Tennessee Valleys tonight into Friday. North of the track of the low pressure wave, temperatures will be cold enough to support mixed precipitation (including some freezing rain and drizzle) and snow over the central/northern Plains today, reaching into the upper Midwest by Friday morning, where a few inches of snow is expected. This system is forecast to dissipate on Friday as it reaches the Great Lakes. However, another low pressure wave is forecast to form once again over the central High Plains Friday night and then track quickly to the east, bringing another around of moderate to heavy rain to the same general region from the southern Plains eastward to the mid-Mississippi Valley by Saturday morning. Meanwhile, unsettled weather is in store for the West Coast as a couple of broad and energetic systems from the Pacific are in the forecast. The first system is currently bringing low elevation rainfall and heavy high elevation snows into the Pacific Northwest this morning. The precipitation will spread farther south into north California tonight, as well as farther inland as mountain snow across the Intermountain region. A large low pressure system will quickly follow in the wake of the first system with more heavy low-elevation rains and heavy mountain snows reaching the Pacific Northwest and northern California Friday night and continuing into the weekend. Kong Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php