Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 214 AM EDT Fri Jun 19 2020 Valid 12Z Fri Jun 19 2020 - 12Z Sun Jun 21 2020 ...Hot conditions for the South, Midwest, & New England through the weekend; possible record heat for New England on Friday... ...Severe thunderstorms possible for the Southern Plains on Friday... ...Relatively mild and showery weather continues across the Mid-Atlantic, Carolinas, and into the Ohio Valley through the weekend... The general flow pattern breaks down the recent blocky pattern which has led to slow system movement across the United States by Sunday. Much of the West Coast should remain rain-free into the start of the weekend with above normal temperatures spreading from the the Pacific Northwest on south to the San Joaquin Valley, reaching the Great Basin on Saturday. The fire weather threat across the Southwest is on the wane, with one area of elevated fire weather conditions still present in southern New Mexico for Friday. Meanwhile, summer heat continues from the southern Plains across the Midwest and into the Great Lakes. High temps in these regions are forecast to range between the upper 80s and low 90s. Rain is expected across the Midwest into Sunday near a stalled front, with the severe weather threat focused in the southern Plains on Friday. Behind the cold front, temperatures will remain moderate across the Northern Plains. Out East, a slow-moving upper-level low that has brought mild and wet weather across the Mid-Atlantic into the central Appalachians will continue to gradually weaken while edging eastward, allowing temperatures to slowly moderate. Showers and thunderstorms associated with this system will become more widely scattered with time. June sunshine will tend to trigger new rounds of scattered showers from late afternoon into the evening hours for some areas along the East Coast into the Ohio Valley through Sunday. Full sunshine to the north of the slow-moving system will raise afternoon temperatures well into the 90s across northern New England on Friday, where record high temperatures are possible for the next couple of days at a few locations, with temperatures remaining above average through the weekend. Farther south, tropical moisture and daytime heating continue Florida's summer/wet season, especially over the central and southern peninsula. Hourly rainfall totals in excess of two inches could occur within thunderstorm clusters. Roth Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php