Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 132 PM EDT Sun Oct 18 2020 Valid 00Z Mon Oct 19 2020 - 00Z Wed Oct 21 2020 ...Continued much above average to record high temperatures for the Southwest into California along with continued poor air quality near ongoing fires.... ...Accumulating snows possible from the Northern High Plains into the Upper Mississippi Valley Monday night into Tuesday... ...Heavy rain potential Sunday night into Monday from the Mid Mississippi Valley and Ohio Valley... The new week will begin much like the old week ended with a continuation of much above average temperatures from California, through the Southwest and into the Great Basin. Much of this region will see high temperatures 10 to 15 degrees above average, with additional record high maximum and record high minimum temperatures possible across portions of California into the Southwest. With no changes to the overall pattern affecting the west coast, air quality will remain poor near ongoing fires, especially in the central California valley region. Much below average temperatures to persist into the early part of this week across the Northern Plains into the Upper Mississippi Valley. Another round of accumulating snows are possible across the Northern High Plains into the Upper Mississippi Valley Monday night into Tuesday as a storm system pushes eastward across the Northern Plains. The current relatively dry pattern across the nation will begin to become increasingly wet in the vicinity of a frontal boundary that is expected to become stationary from the Mid Mississippi Valley and across the Ohio Valley region. Heavy rains are possible across these region Sunday night into Monday. These regions have been dry over the past few weeks with this heavy rainfall not likely to produce any flooding issues. Showery conditions will also be increasing across South Florida and the east coast of Florida for the new week as an area of disturbed weather pushes westward from the Bahamas and across South Florida. Oravec Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php