Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 358 PM EDT Sun Jun 04 2017 Valid 00Z Mon Jun 05 2017 - 00Z Wed Jun 07 2017 ...There is a slight risk of severe thunderstorms over parts of the Northern High Plains/Northern Rockies and Northern Intermountain Region... ...There is a slight risk of severe thunderstorms over parts of the Ohio Valley/Lower Great Lakes... ...Heavy rain possible over parts of the Central/Eastern Gulf Coast... ...Heavy rain possible over parts of the Northern Appalachians... A front extending from the Great Lakes to the Central Plains will slowly eastward to the Northeast/Mid-Atlantic Coast and southward to the Tennessee Valley/Lower Mississippi Valley by Tuesday. The system will produce showers and thunderstorms from the Great Lakes to Central Plains that will move into the Lower Great Lakes/Ohio Valley by Monday morning. By Monday night the showers and thunderstorms will move into parts of the Northern Appalachians into parts of the Southern Ohio Valley/Tennessee Valley. As the front sinks into Tennessee Valley, showers and thunderstorms will develop over parts of the Northern Mid-Atlantic into parts of the Southeast to the Lower Mississippi Valley by Tuesday morning. In addition, showers and thunderstorms will develop along the associated warm front over parts of the Northern Mid-Atlantic/Lower Great Lakes that will continue through Monday afternoon. Meanwhile, scattered showers and thunderstorms associated with an upper-level low continue to fall over a large area across the Southern/Central Plains and along the Gulf Coast. The upper low is forecast to slowly sink southward into the western Gulf Coast by Monday. The upper low will begin to interact with moisture coming up from a tropical system in the Gulf of Mexico for the next few days. As the upper low moves southward, showers and thunderstorms over Oklahoma and central Texas should taper off on Monday. However, much of the Gulf Coast eastward into Florida will see an increasing chance of more showers and thunderstorms as a broad area of low pressure forms slowly along the coast during the next few days. Elsewhere, a developing front across the Intermountain West into the Great Basin will move eastward into the northern High Plains on Monday. This will bring showers and thunderstorms across the Intermountain region today, which will spread into the northern Rockies early on Monday. By Monday afternoon, more showers and thunderstorms will extend southward into the central High Plains and the central Rockies. Some scattered thunderstorms should develop in the southern Rockies and southern High Plains as well on Monday into early Tuesday. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php