Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 357 AM EDT Tue Jun 20 2017 Valid 12Z Tue Jun 20 2017 - 12Z Thu Jun 22 2017 ...Low pressure in the Gulf of Mexico is forecast to become a tropical storm... ...There is a slight risk of severe thunderstorms over parts of the Central High Plains... ...Heavy rains possible over parts of Southern Mid-Atlantic/Southeast... ...Heavy rain possible over parts of the Eastern to Western Gulf Coast... Low pressure over Gulf of Mexico is forecast to become a tropical storm and slowly move northward to the Central/Western Gulf Coast. Showers and thunderstorms will begin to develop along the Eastern/Central Gulf Coast on Tuesday that will slowly move farther inland and expand into parts of the Western Gulf Coast on Wednesday. For the most up to date information on storm track and intensity see the latest advisory from the National Hurricane Center. Meanwhile, a front extending from the Northeast southward to the Southern Mid-Atlantic and westward to parts of the Southern Plains will slowly move off the Northeast/Northern Mid-Atlantic Coast and slowly dissipate on Wednesday. The southern half of the boundary will become quasi-stationary from the Southern Mid-Atlantic to the Lower Mississippi Valley and likewise begin to dissipate by Wednesday evening. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php