BBS: TELESC.NET.BR Assunto: HVYSNOW: Probabilistic Heavy Snow And Icing Discussion De: COD Weather Processor Data: Sun, 22 Mar 2026 19:32:09 +0000 ----------------------------------------------------------- FOUS11 KWBC 221931 QPFHSD Probabilistic Heavy Snow and Icing Discussion NWS Weather Prediction Center College Park MD 331 PM EDT Sun Mar 22 2026 Valid 00Z Mon Mar 23 2026 - 00Z Thu Mar 26 2026 ...Northern New England... Day 1... While the primary precipitation shield associated with a clipper system crossing the Northeast is forecast to begin moving offshore this evening, a secondary period of accumulating snow is expected on Monday. An inverted trough, extending back from the departing low, is forecast to develop and linger across eastern New England. This feature will likely act to focus a north-south oriented band of snow showers that could intensify late Monday as an intensifying shortwave and associated cold pool aloft pivot into the region from the west. Given the added lift and some modest instability, localized heavier bursts are possible, especially in northern New Hampshire and western Maine where the inverted trough may align with favorable upslope flow. WPC probabilities indicate that an additional 2-4 inches are possible with this band, with the highest probabilities (50-70+ percent) focused over the northern New Hampshire and western Maine mountains. ...Washington Cascades & Olympics... Days 2-3... A deepening storm lifting from the northeastern Pacific into British Columbia will bring widespread moderate to heavy precipitation into the region on Tuesday. However, the heaviest precipitation rates are expected to coincide with relatively high snow levels through Tuesday afternoon. Consequently, the bulk of the significant accumulating snow (greater than 8 inches) will remain above the major passes and confined to the higher peaks of the Olympics and the northern Cascades. As the front crosses the region late Tuesday and early Wednesday, snow levels will begin to plunge toward 3,000 ft, but this cooling will occur as the deepest moisture begins to shift east. However, some of passes may see a period of rain changing to snow, impacting travel. The chances for significant ice across the CONUS is less than 10 percent. Pereira $$ = = = 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]