Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 358 PM EDT Sun Jul 23 2017 Valid 00Z Mon Jul 24 2017 - 00Z Wed Jul 26 2017 ...Concerns of flash flooding and severe weather across the Mid-Atlantic region will end tonight... ...Relief from the dangerous heat expected from the Plains to the Mid-Atlantic as a cold front moves across the East... ...Localized flooding will be possible for the Southwest and southern and central Rockies over the next few days... The wavy frontal boundary that stretches from the Northeast to the central Plains will continue to be the focus for showers and thunderstorms over the next few days. The last round of showers and thunderstorms for the Mid-Atlantic will move over the region tonight and could last through Monday morning. These storms could produce both flash flooding and severe weather. By Monday, isolated storms could be possible for the Mid-Atlantic however organized precipitation as seen in the last few days is not expected. Meanwhile, precipitation increases across the Southeast through the Carolinas on Monday and Tuesday as the cold front slowly drifts south. Farther north, as an amplified upper level disturbance moves eastward over the Great Lakes region, heavy rain and severe weather could be possible tonight and into Monday morning. An increase in precipitation can be expected for the Northeast and New England on Monday night and into Tuesday as this upper level energy moves over New England. Dangerous heat that has plagued areas across the eastern half of the U.S. will finally be delivered some relief as the cold front sinks over the central Plains and Middle Mississippi Valley. Temperatures in these areas will be close to normal. One more hot and humid day for the Mid-Atlantic can be expected on Monday before the cold front moves over the area. Elsewhere, monsoonal moisture along with daytime heating will trigger thunderstorms across the Southwest and the southern half of the Rockies on Sunday. Heavy downpours associated with these thunderstorms could lead to localized flash flooding. An increase in flash flooding threat will be possible across Arizona on Monday. As a cold front sweeps across the northern Plains and into the Upper Midwest on Tuesday, showers and thunderstorms will develop along and ahead of it. There is a slight risk of flash flooding and severe weather for the eastern portions of the northern Plains and areas across the Upper Midwest. Reinhart Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php