Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 357 AM EDT Sun Jun 10 2018 Valid 12Z Sun Jun 10 2018 - 12Z Tue Jun 12 2018 ...Severe thunderstorms possible from the Dakotas to the Upper/Middle Mississippi Valley... ...Heavy rain possible over parts of the Middle/Upper Mississippi Valley, across the Ohio Valley and into the northern Mid-Atlantic... ...Rain/snow possible over the highest elevations of the Cascades and Northern Rockies... Showers and thunderstorms will develop from the Northern Plains to the Middle Mississippi/Ohio Valleys over the next few days as a slow moving system tracks through the central U.S. Conditions conducive for strong to severe thunderstorm development will be in place across the north-central states. The Storm Prediction Center has identified the Northern High Plains as having a slight risk for severe weather today, then shifting eastward into the Upper Midwest/Midwest for early in the week. Due to the slow nature of this front, the storm motion will be slow which will increase the likelihood of heavy rainfall and flooding risks. WPC has slight risks for excessive rainfall covering portions of the Upper Midwest and Ohio Valley in effect. An area of low pressure along the Mid-Atlantic/Southeast Coast will help aid in developing showers and thunderstorms into midweek. The moisture, daytime heating, and upper-level energy will aid in producing showers and thunderstorms over the Western/Central Gulf Coast and Lower Mississippi Valley today. Additionally, onshore flow over the Pacific Northwest and parts of Northern California will aid in producing rain and highest elevation rain/snow over parts of the Cascades that will become more scattered by Monday. Campbell Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php