Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 253 AM EDT Wed May 11 2016 Valid 12Z Wed May 11 2016 - 12Z Fri May 13 2016 ...Strong frontal boundary to affect the central U.S. through Thursday... The main weather feature across the nation will be a strong low pressure system over the north-central U.S. that will have a trailing cold front extending southward to Texas and the Desert Southwest. An occluded surface low over North Dakota will slowly lift northeastward to southern Canada, with rainy weather over eastern Montana and western North Dakota for the first half of Wednesday. Farther to the south, another surface low along the trailing cold front will also produce widespread showers and thunderstorms extending from Texas to the Ohio Valley. Some of these storms could be severe at times, and also produce localized flash flooding. Temperatures are expected to be below normal across much of the Intermountain West with an upper level trough in place, and also for the Northeast U.S. which will be under the influence of a Canadian surface high. It will continue to be warm and humid south of a stationary frontal boundary, which will extend from the Ohio Valley eastward to the Mid-Atlantic coast. Highs in the 80s to near 90 along with noticeable humidity will be commonplace across the Deep South and the Southeast states. West of the Rocky Mountains, a quiet weather pattern should prevail through the end of the week with no Pacific storm systems imminent. Inland temperatures should slowly return closer to average after the recent cool weather. Hamrick Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_wbg.php