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Short Range Public Discussion
 
(Latest Discussion - Issued 2014Z Dec 07, 2021)
 
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Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 314 PM EST Tue Dec 07 2021 Valid 00Z Wed Dec 08 2021 - 00Z Fri Dec 10 2021 ...Long awaited heavy snow to arrive over the Central Rockies late this week... ...Cool temperatures and light snow expected for parts of the Great Lakes and Northeast over the next few days; warm air expands across Plains... ...Heavy snow possible across parts of the Sierra Nevada and Intermountain West Wednesday night through Thursday... An active weather pattern will culminate in the development of a winter storm over the Central Rockies/Plains towards the end of the week. A shortwave trough will spawn shallow precip in the form of light snow over parts of the Midwest tonight before spreading out into the Lower Great Lakes, Central Appalachians, Mid-Atlantic and up through the Northeast on Wednesday. A stationary front draped along the Gulf coast and into the Atlantic will bring rain showers and scattered to isolated thunderstorms to the region and through much of the Southeast/Carolina coast tonight through Wednesday. A strong upper-level trough will bring heavy snow to the Cascades and Sierra Nevada beginning Wednesday and continuing through Thursday. 1-2 feet of snow are expected for the Northern Cascades while around a foot is likely over the Sierra. Heavy snow is then expected to spread into the Intermountain West, Central Rockies and Front Range Wednesday night and continuing into Friday the Rockies and Front Range. 1-2 feet with higher locally higher amounts are likely for much of the Intermountain West and Central Rockies. Heavy snow really kicks off in earnest across the Front range and into the Central/Northern Plains and Upper Midwest upon the development of a Winter storm over the foothills of the Colorado Rockies on Friday . Downstream of this system, another low pressure system will produce moderate to heavy snowfall across portions of the Upper Midwest and/Great Lakes on Thursday, where 4-8 inches of snow with locally higher amounts are expected. Anomalously warm air will advect into the Plains and Mississippi Valley out ahead of this winter storm beginning on Wednesday. The warmest temperatures, on the magnitude of 15-25 degrees above average will be felt over the Southern Plains through the Midwest on Thursday and Friday. Relatively dry conditions and increased wind speeds due to the deepening surface low will contribute to an Elevated Risk of Fire Weather over parts of eastern New Mexico and western Texas on Wednesday. Kebede Graphics are available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php