Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 328 PM EDT Thu Oct 02 2014 Valid 00Z Fri Oct 03 2014 - 00Z Sun Oct 05 2014 ...There is a slight risk of severe thunderstorms for parts of the Southern Plains, Lower/Middle Mississippi Valley, and parts of the Tennessee Valley... ...Temperatures will be 10 to near 20 degrees below average over parts of the Upper Midwest into the Central Plains... ...Wet snow is possible over parts of the Upper Mississippi Valley... A front extending from the Upper Great Lakes roughly southwestward to the Lower Rio Grande Valley will slowly move eastward to the Northern Appalachians southward along the East Coast to Florida by Saturday morning. Moisture from the Gulf of Mexico will pool along the boundary that will aid in the development of showers and thunderstorms, with heavy rain, from the Upper Great Lakes southward to Southeastern Texas by Thursday evening. The showers and thunderstorms will move eastward to the Great Lakes to the Central Gulf Coast by Friday morning. By Friday evening, the area of showers and thunderstorms is confined to the Southeast and Southern Mid-Atlantic moving off the coast by Saturday morning. Moderate to heavy rain will develop over parts of the Upper Great Lakes by Friday morning. Rain will develop along and ahead of the front over the Lower Great Lakes/Mid-Atlantic on Friday evening moving to the Northeast by Saturday morning. Meanwhile, a secondary front over the Northern/Central Plains will move to the Upper Great Lakes/Southern High Plains while dissipating by Friday. The associated energy will produce snow and rain over part of the Northern/Central Rockies ending by Friday morning. Areas of rain will develop over parts of the Northern/Central High Plains and the Upper Mississippi Valley Thursday into Friday morning. An other area of rain/snow will develop over parts of the Upper Mississippi Valley on Friday evening, lifting into Southwestern Ontario by Saturday morning. In addition, an area of light to moderate rain will develop over parts of the Great Lakes on Saturday morning. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php