Short Range Forecast Discussion NWS Weather Prediction Center College Park MD 151 PM EST Mon Dec 02 2024 Valid 00Z Tue Dec 03 2024 - 00Z Thu Dec 05 2024 ...Locally heavy lake-effect snow will continue off the Great Lakes... ...Low pressure to approach Great Lakes region by Wednesday bringing strong winds and a reinforcing shot of Arctic air to the northern Plains and Midwest... ...Below normal temperatures will continue through the middle of the week across much of the East, with above normal temperatures across the West... Cold high pressure dropping southeast across the Midwest will be filtering south down across the Mid-South and into much of the Southeast going through the middle of the week which will keep temperatures across much of the East below normal. In fact, some high temperatures across the southern Appalachians and interior of the Southeast will be as much as 10 to 20 degrees below normal. Cold air meanwhile will continue to foster some areas of locally heavy lake-effect snow downwind of the Great Lakes, with as much as 6 to 12+ inches of additional snow possible through Tuesday, and especially off Lake Erie impacting northwest Pennsylvania and far western New York. A new storm system though will be intensifying and approaching the Great Lakes region by Wednesday. This will bring areas of strong winds to much of the northern Plains and Midwest region by Wednesday morning, and these winds will overspread the Great Lakes region by Wednesday night. A reinforcing shot of Arctic air will be arriving as well behind a strong cold front. This will also gradually reload the prospects for new rounds of lake-effect snow later in the week downwind of the Great Lakes. Across areas of southern Texas and the broader northwest Gulf Coast region, a weak area of low pressure will be focusing close to the coast and should help bring some resurgence of moisture northward across the region going through the middle part of the week. This moisture coupled with proximity of a front will bring a threat for some locally heavy showers and thunderstorms, with some of the heaviest rainfall potential expected across far southeast Texas and Louisiana where a couple of inches will be possible going through Wednesday night. Elsewhere, much of the West will be above normal for temperatures as high pressure aloft continues over the region. This will also keep much of the region dry. Orrison Graphics available at https://www.wpc.ncep.noaa.gov/basicwx/basicwx_ndfd.php