Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 400 PM EDT Sat Sep 26 2020 Valid 00Z Sun Sep 27 2020 - 00Z Tue Sep 29 2020 ...Elevated to critical fire weather conditions continue across a broad portion of the western U.S. and Plains... ...A strong cold front is set to erase well above-normal temperatures over the central and southern Rockies and Plains... ...Heavy showers and storms possible in the Upper Great Lakes today... Dry and windy conditions continue to promote elevated to critical fire weather conditions across a broad area of the western U.S. into the Plains. Critical fire weather conditions that are occurring, or are imminent, have prompted Red Flag Warnings across a large portion of California, the central Rockies and the High Plains. A strong cold front plunging south through the Plains, along with high pressure building over the interior West are expected to raise fire weather concerns across portions of these same areas through the remainder of the weekend. High pressure building over the West is forecast to support offshore winds across California, raising fire weather concerns to critical levels across parts of both Northern and Southern California on Sunday. As the previously noted front dives south, well-above normal to record-breaking heat over the central Rockies and central Plains on Saturday, will be replaced by dramatically cooler temperatures on Sunday. Much of the region may expect daytime highs 20-30 cooler on Sunday. This front is forecast to continue pushing south and east -- erasing well-above normal temperatures over the southern Plains and Rockies on Monday. Low pressure developing along the front is expected to support the second day in a row of showers and thunderstorms across the Upper Great Lakes region. Some of these may become strong to severe, particularly across portions of northern Wisconsin and Upper Michigan, where conditions are expected to become favorable for large hail and damaging winds late Saturday afternoon and through the evening. Moisture pooling along the front, will support an increase in shower and thunderstorm coverage as the front pushes southeast from the mid Mississippi valley and Ozark region on Sunday, and into the Ohio, Tennessee and lower Mississippi valleys on Monday. Across the East, above-normal temperatures will persist across the Northeast and expand into the Mid-Atlantic states on Sunday and Monday. Meanwhile, a lingering front will continue to support showers and thunderstorms across the Southeast and central Gulf Coast region. Pereira Graphics available at www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php