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355 FXUS65 KBOU 011106 AFDBOU Area Forecast Discussion National Weather Service Denver/Boulder CO 506 AM MDT Tue Sep 1 2026 .KEY MESSAGES... - Warmer and drier conditions expected from Tuesday through Friday, with only a slight chance for thunderstorms, mainly over the higher terrain. - Return of better moisture by the weekend with an increasing chance for showers and thundeerstorms across the high country. && .DISCUSSION /Through Monday/... Issued at 240 AM MDT Tue Sep 1 2026 SW flow aloft will remain over the area today with drier air spreading across the area. Thus, will see much lower chances for showers/tstms this aftn. MLCAPE over the far ern plains will range from 1000-1500 j/kg with bulk shear around 30 kts. At this time, can`t rule out an isold stronger storm or two over the far ern plains late this aftn into the early evening hours. Over the higher terrain only isold to widely sct showers/tstms are expected this aftn. Highs today will stay near seasonal levels. For Wed and Thu, dry air in SW flow aloft will remain over the area with only a slight chc of aftn showers/tstms, mainly over the higher terrain. Temperatures will be warmer as readings rise into the upper 80`s to lower 90s across the plains. By Fri, the flow aloft will become more SSW. Overall, it still looks mainly dry with only a slight chc of showers/tstms mainly over the higher terrain. Highs on Fri will be in the lower to mid 90`s across nern CO. For the weekend through Labor Day, an upper level high will be over the central US and expand into the srn Rockies, as an upper level low is near the West Coast. As a result, SSW flow aloft will remain over the area. Both the ECMWF and GFS show some influx of monsoon moisture beginning on Sat and continuing thru Labor Day. Thus will keep in a chc of showers/tstms each day over the higher terrain with a slight chance across the plains. Temperatures will remain above normal thru the period. && .AVIATION /12Z TAFS through 12Z Wednesday/... Issued at 504 AM MDT Tue Sep 1 2026 Winds will be light and variable thru 17z and then become light easterly. By 20Z expect a light N/NNE direction. There is a 10 percent chance of -shra from 22z to 02z so have left in a prob30. Winds this evening will become SE by 02z and then switch to drainage by 05z. && .BOU WATCHES/WARNINGS/ADVISORIES... None. && $$ DISCUSSION...RPK AVIATION...RPK