Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 222 PM EST Mon Feb 08 2021 Valid 00Z Tue Feb 09 2021 - 00Z Thu Feb 11 2021 ...Arctic air to remain entrenched across the north central U.S. for the upcoming week... ...A significant ice storm possible Wednesday into Thursday from the Mid Mississippi Valley into the Ohio Valley... ...Light to moderate snows possible from New England into the Mid Atlantic and Upper Ohio Valley... No let up expected to the very cold weather pattern affecting large portions of the central to north central U.S. A broad upper vortex centered across much of southern Canada will lock in arctic air across much of the central U.S. from the Northern to Central Plains and into the Upper Mississippi Valley. High temperatures will remain below zero Tuesday and Wednesday from central to eastern Montana, across much of North Dakota and into northern Minnesota. Low temperatures Tuesday and Wednesday mornings across these same areas will likely be in the -15 to -30F range. The combination of these temperatures and wind will result in life threatening wind chill values as low as -55F, with these areas currently under wind chill warnings and advisories. While temperatures are not expected to be as cold farther to the south, much below average temperatures are expected across much of the central U.S. with temperatures 20 to 30 degrees below average over the next several days. To the southeast of the much below average temperatures, much above average temperatures are expected from South Texas, eastward into the Lower Mississippi Valley, along the northern Gulf coast and across Florida. High temperatures across these areas expected to be 10 to 15 degrees above average Tuesday and Wednesday. The frontal boundary on the leading edge of the central U.S. arctic air will be the focus for two rounds of wintry weather over the next few days. The first storm will produce light to moderate snow fall amounts from portions of the Upper Ohio Valley into the northern Mid-Atlantic and much of New England Monday night through Tuesday. This will be followed by a second storm system Wednesday spreading snows from portions of the Mid Mississippi Valley into the Ohio Valley and Mid Atlantic. To the south of the area of accumulating snows, a significant ice storm is possible Wednesday into Thursday from northeast Arkansas/southeast Missouri, across far southern Illinois into northern Kentucky, with ice accumulations in excess of .25" possible across these areas. Oravec Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php