Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 317 AM EDT Sat Jun 5 2021 Valid 12Z Sat Jun 5 2021 - 12Z Mon Jun 7 2021 ...Early season heatwave across the north-central states... ...Additional heavy rain for portions of the Gulf Coast... Impressive early season heat is expected across much of the northern tier of the U.S. on Saturday as a large upper level ridge dominates the weather pattern across the Northern Plains and Upper Midwest. Highs well into the 90s and even low 100s are likely from Montana to Minnesota, and this will likely challenge some daily record highs. Cooler weather arrives on Sunday as a cold front brings readings down into the 70s and 80s for many of these same areas, while 90s are likely again farther east across the Upper Midwest. It will also be quite warm across the Desert Southwest with 100-110 degree readings expected for the lower elevations. It will not be as hot across Texas and the Deep South owing to a weak upper low and abundant cloud cover and rainfall. Another thing making weather headlines for the weekend will be additional heavy rainfall across the central Gulf Coast region, particularly across southern Louisiana and southern Mississippi. Moisture rich flow from the Gulf of Mexico will intercept a weak low level boundary over this region, and promote the development of numerous showers and storms through Saturday, with the potential for 2 to 5 inches of rain that may result in some instances of flooding. Heavy rain is also expected across the ArkLaTex region in connection with the slow moving upper low, and for the Cascades as a couple of Pacific disturbances pass through the region. Hamrick Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php