Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 300 AM EST Wed Nov 27 2024 Valid 12Z Wed Nov 27 2024 - 12Z Fri Nov 29 2024 ...Pre Thanksgiving to Thanksgiving Day storm to push from the Mid Mississippi/Ohio Valley today into the Northeast on Thursday... ...Dry conditions on tap for the West coast after several days of wet weather... ...Much above average temperatures from the Southern Plains into the Gulf Coast on today, while much below average temperatures spill out into the Great Plains and Mississippi Valley through the end of the week... A low pressure system responsible for heavy snowfall over the Colorado Rockies, ending this morning, will intensify into a dynamic mid-latitude cyclone and track through the Midwest and into the Northeast Coast through Thanksgiving day. Scattered showers and thunderstorms will spread across the Mid/Lower Mississippi Valley, Ohio/Tennessee Valleys, Mid-Atlantic, Southeast and Northeast Coast beginning tonight and progressively shifting eastward on Thanksgiving day. A swath of light to moderate snowfall is likely to develop across portions of the interior Northeast, with the Northern Appalachians forecast to receive 4-8 inches of snow by Friday morning. Elsewhere, snow showers across the Upper Great Lakes may yield anywhere from 4-8 inches over the northern coastline of the Upper Peninsula of Michigan as well as northern parts of Michigan. A dry spell ensues across the West as an upper ridge slowly settles in over the region. Shortwave energy will phase with a northern stream trough and amplify across the eastern half of the country in the coming days. This development will allow for an arctic airmass to spill out across the Great Plains and Mississippi Valley through Thanksgiving day before spreading into the East Coast this holiday weekend. Prior to that, today will be the last day of much above average temperatures throughout the South. Much of Texas will experience high temperatures between 15-25 degrees above average. Kebede Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php