Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 429 AM EDT Sun Jul 12 2020 Valid 12Z Sun Jul 12 2020 - 12Z Tue Jul 14 2020 ...Strong to severe thunderstorms over the central Plains this morning should become more scattered in nature as they move across the eastern U.S. during the next couple of days... ...Another round of strong to severe thunderstorms are expected for the northern Plains on Monday... ...Record heat should culminate today over the Desert Southwest but is expected to continue in Texas through Tuesday... The most active weather early this morning is found over the central Plains and the Ohio Valley where severe weather and flash flooding are impacting parts of the area. A cold front will gradually push the thunderstorms eastward into the eastern U.S. by this afternoon when the storms are expected to become more scattered in nature. The thunderstorms will then move across the Eastern Seaboard on Monday under a hot and humid airmass. Some of the showers and thunderstorms are expected to linger along the East Coast on Tuesday as the front slows down just offshore. Behind the cold front, sunshine and cooler than normal temperatures will spread across the northern Plains and into the Great Lakes today. However, hot and humid weather will return on Monday over the northern Plains as the next low pressure system is forecast to develop yet again over the northern High Plains. The threat of severe thunderstorms will once again increase across the northern Plains on Monday, reaching the upper Midwest Monday night as the entire system pushes steadily eastward. Across New England, scattered thunderstorms will linger into Tuesday as a couple of fronts remain in the vicinity followed by the formation of a coastal low pressure system on Tuesday. Expansive upper level ridging will keep hot and above normal temperatures in place across much of the South. High temperatures from western Texas to the Desert Southwest are forecast to challenge records through Tuesday at least. In fact, temperatures could reach 110 degrees at the hottest locations over the southern High Plains, while 120 degrees is within reach for parts of the Desert Southwest. Above normal temperatures are also likely across much of the interior West with an increasing threat of wildfires. A large area of heat advisories and excessive heat warnings are in effect across much of the Desert Southwest, southern Plains and into the lower Mississippi Valley. The heat will not let up after the sun sets as overnight temperatures will remain above average, and may challenge records in the Southwest and the southern Plains through Tuesday. Kong Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php