Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 314 PM EDT Thu Oct 16 2025 Valid 00Z Fri Oct 17 2025 - 00Z Sun Oct 19 2025 ...Chance for showers and thunderstorms over parts of the Plains and Upper Great Lakes from Thursday into Saturday... ...Chances for heavy snow over parts of the Northern Rockies/Great Basin... The low pressure system that sits over the Northern Plains will continue to deepen and move northeast through the weekend. With the cold front extending down into the Southern Plains, moisture will continue to advect along central CONUS, bringing chances for showers and thunderstorms to continue for the next few days. Storm Prediction Center has issued a Marginal Risk (level 1 of 5) for severe thunderstorms across the central High Plains for tonight into Friday and across parts of the northern Southern Plains into Mid-Lower Mississippi Valley for Friday into Saturday. Other hazards associated with this storm will include a potential for isolated hail and marginally severe gusty winds within the stronger cells. By late Saturday, the front will move eastward into the Mid-South and lower Ohio Valley, allowing for moisture to pool and instability to increase, bringing a Slight Risk (level 2 of 4) for Excessive Rainfall, with a chance for flash flooding. Over the Northwest, a surface trough and low pressure system will gradually move over the Pacific Northwest and Northern Rockies, bringing chances for occasional heavy rain, especially along the coast and within valleys, along with high-elevation snow through the weekend. As the system continues to progress, expect chances for heavy snow over the North-Central Rockies and Pacific Northwest. Parts of Wyoming is currently under a Winter Weather Advisory for heavy snow over higher terrains. In addition, a weak onshore flow will bringing some moisture over the western parts of the Gulf coast, promoting scattered showers and thunderstorms through the weekend. The cold front off the Florida coast will continue to move southward over the Atlantic that will bring chances for rain and showers over parts of Florida through Saturday. Oudit Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php