BBS: TELESC.NET.BR Assunto: HVYSNOW: Probabilistic Heavy Snow And Icing Discussion De: COD Weather Processor Data: Thu, 19 Mar 2026 19:03:29 +0000 ----------------------------------------------------------- FOUS11 KWBC 191903 QPFHSD Probabilistic Heavy Snow and Icing Discussion NWS Weather Prediction Center College Park MD 303 PM EDT Thu Mar 19 2026 Valid 00Z Fri Mar 20 2026 - 00Z Mon Mar 23 2026 ...Upper Great Lakes to the Northeast... Days 1-3... Ridge/trough upper pattern over the CONUS will continue to bring northern stream systems through the Great Lakes into the Northeast with minor to occasionally modest snowfall. A system over southern Canada this evening will push through the Great Lakes tonight and into southern/southeastern Ontario tomorrow. WAA-driven snow and some light icing is likely over the U.P. of Michigan and into northern Lower Michigan. As the clipper moves into the Northeast tomorrow afternoon/evening, snow will fall mostly over the higher elevations (above 1500ft or so) where WPC probabilities for at least 4" are >50%, with lesser accumulations to the valley floors (T-2"). Precipitation should end on Saturday morning. The next system will slip into northern MN and the western Great Lakes Saturday afternoon/evening. With a southwest-to-northeast thermal gradient, some icing is possible once again over northeastern MN, northern WI, and northern Lower Michigan near the surface warm front. That system may track a bit farther south, which could bring in at least some light to modest snow to northeastern MN into the U.P. of Michigan. There, WPC probabilities for at least 4 inches of snow are >40% Saturday into very early Sunday. The system will race eastward and bring another swath of snow to northern NYS into New England Sunday. Through 00Z/Mon, WPC probabilities for an additional 4 inches of snow are >30% over the higher elevations of the northern Adirondacks into the Green/White Mountains, but the snow will continue beyond this forecast range. The chances for significant icing across the CONUS is less than 10 percent. Fracasso $$ = = = To unsubscribe from WX-STORM and you already have a login, go to https://lists.illinois.edu and use the "Unsubscribe" link. Otherwise email Chris Novy at cnovy@cox.net and ask to be removed from WX-STORM. --- SBBSecho 3.28-Linux * Origin: Capitol City Online (1:2320/107) ----------------------------------------------------------- [Voltar]