Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 332 AM EDT Thu Sep 15 2016 Valid 12Z Thu Sep 15 2016 - 12Z Sat Sep 17 2016 ...Heavy rain possible just offshore of the Carolina Coast due to Tropical Storm Julia... ...There is a slight risk of sever thunderstorms over parts of the Central Plains... Tropical Storm Julia is forecast to drift eastward off the South Carolina Coast. See the latest advisory from the National Hurricane Center for the most up to date track and intensity of Julia. The storm will produce showers and thunderstorms along parts of the Carolina Coast through Friday evening. The heaviest rain will be offshore from Julia. Meanwhile, an upper-level low over the Northern Rockies/High Plains will move eastward to the Northern Plain/Upper Mississippi Valley by Friday night into Saturday. The system will produce showers and thunderstorms over parts of the Northern/Central Plains and into parts of the Northern/Central Rockies and the Middle Mississippi Valley that will expand into most of the Plains and the Mississippi Valley by Thursday evening. On Friday, the showers and thunderstorms will expand into parts of the Upper Great Lakes/Western Ohio Valley and into parts of the Tennessee Valley. In addition, tropical moisture over parts of the Gulf Coast States into Florida along with daytime heating will aid in producing showers and thunderstorms along the Gulf Coast and Florida during the afternoon into the late evening hours on Thursday and Friday. Additionally, monsoonal moisture and daytime heating will produce showers and thunderstorms over parts of the Central/Southern Rockies also on Thursday and Friday afternoon into late evening. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php