Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 359 AM EDT Fri Apr 22 2016 Valid 12Z Fri Apr 22 2016 - 12Z Sun Apr 24 2016 ...Heavy precipitation possible over parts of the Absaroka Range in Montana... ...Heavy precipitation possible over parts of the Sierras... A front extending from the Lower Great Lakes southward to the Western Gulf Coast will slowly move off the East Coast mainly by Saturday morning. Showers and thunderstorms will develop along and ahead of the boundary from the Ohio Valley to the Lower Mississippi Valley and the Western Gulf Coast will likewise move off the Southern Mid-Atlantic Coast/Southeast Coast by Saturday morning. Ziegenfelder Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php