Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 354 AM EDT Sat May 25 2019 Valid 12Z Sat May 25 2019 - 12Z Mon May 27 2019 ...Cool for the West and Hot for the Southeast with more storms across the Plains... A very active weather pattern is forecast to continue across the central part of the nation through the weekend with additional heavy rain and severe storms expected. This is in response to an anomalous upper level trough situated over the Intermountain West and a large upper level ridge anchored over the southeastern U.S. A clash of air masses from the southern plains to the Ohio Valley region will support multiple episodes of bad weather in the general vicinity of a slow moving frontal boundary with waves of low pressure developing along it. The surface low that tracked across the Upper Midwest on Friday is now moving northeastward across southern Canada, but it will still have an impact on the weather across the Great Lakes and Northeast this weekend. The trailing cold front from this low will intersect a warm and humid air mass and ignite showers and storms from the Ohio Valley to the Mid-Atlantic region. The next organized surface low develops across the western High Plains Sunday night and energizes the atmosphere for another organized round of strong to severe storms from western Texas to the central plains. The flash flooding threat will continue to exist across much of this same general area, with inundating rainfall over the past few days making the ground quite saturated and the prospects for an additional 1 to 2+ inches of rain only aggravating the situation. In terms of temperatures, readings will continue to be below average for the western third of the U.S. given the presence of the upper level trough and increased cloud cover, along with numerous rain and high elevation snow showers. Across the Deep South and the Carolinas, record high temperatures will be possible this weekend with highs soaring well into the 90s and perhaps close to 100 degrees for some areas. D. Hamrick Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php