BBS: TELESC.NET.BR Assunto: HVYSNOW: Probabilistic Heavy Snow And Icing Discussion De: COD Weather Processor Data: Sat, 28 Mar 2026 19:03:12 +0000 ----------------------------------------------------------- FOUS11 KWBC 281903 QPFHSD Probabilistic Heavy Snow and Icing Discussion NWS Weather Prediction Center College Park MD 303 PM EDT Sat Mar 28 2026 Valid 00Z Sun Mar 29 2026 - 00Z Wed Apr 01 2026 ...Pacific Northwest/Northern Rockies... Days 2-3... A closed low south of the Gulf of Alaska continues to trek to the southeast as evidenced by the latest WV satellite analysis. Expectation is for the low to slowly weaken into a positively- tilted upper trough as its cold front moves through WA/OR on Sunday. Despite some injection of mid- latitude Pacific moisture, the system will be progressive and QPF will be limited. Snow levels will be on the lower side -- 2500-4000ft in the Cascades before lowering further behind the front to 1500-3000ft. This will bring some snow to the passes and probabilities for at least 6 inches are at least 50% above about 3000ft or so for the northern Cascades. Farther east, moisture will stream into the northern Rockies and eventually into northern/northwestern Wyoming Sunday evening through Monday and overnight into very early Tuesday, ending from west/northwest to east/southeast. Amounts will again be generally light, with probabilities of at least 6 inches at least 50% above about 5000ft in ID/MT but above 9000-10,000ft in WY. Highest totals >8" are most likely across the Lewis Range in northwest MT and the Absoroka's in southern MT into northwest WY with the Lewis Range's likely to see a foot or more above 7000ft. Front end of the precip shield advancing across the Northern Plains could support some light icing over northern ND early Monday with generally a few hundredths of an inch possible. The probability of significant icing across the CONUS for days 1-3 is less than 10%. Fracasso/Kleebauer $$ = = = 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]