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964 FXUS65 KBOU 230908 AFDBOU Area Forecast Discussion National Weather Service Denver/Boulder CO 308 AM MDT Thu Jul 23 2026 .KEY MESSAGES... - More storms on Thursday as monsoonal moisture remains over region the region. Storms will be capable of producing heavy rainfall along with a localized threat of flash flooding. - Storm coverage expected to decrease for Friday into Saturday but may increase again by Sunday, with highest coverage over the higher terrain. - Temperatures will rise back into the upper 90`s to lower 100`s over northeast Colorado for the weekend into early next week. && .DISCUSSION /Through Wednesday/... Issued at 304 AM MDT Thu Jul 23 2026 A weak upper level trough will move across the area today into this evening. Considerable monsoon moisture will remain over the area with PW`s from 150% to 200% above normal. Thus will see another round of showers and storms across much of the area, with areas of heavy rainfall, in some places. Flow aloft will increase today, so storm movements will be faster than the previous two days. Meanwhile SBCAPE will range of 1500 to 2000 j/kg over the plains. Shear is a little better this aftn, however, mid level temps are very warm. Thus, main threat from stronger storms would be wet microbursts similar to what occurred last evening. As far as highs, readings will be in the mid 80s to lower 90`s across the plains. For tonight, the weak upper level trough will move to the east with shower and tstm activity gradually ending across the plains by mid to late evening. Looking ahead to Fri and Sat, the upper level high will gradually build back into the area with a decrease in monsoon moisture. However, there will still be some residual moisture, for sct tstms in the mtns, especially on Sat. Across the plains, it will be mainly dry with highs reaching the upper 90`s to lower 100`s on Sat. For Sun thru next Tue, an upper level high will extend from the Great Basin across Colorado. Both the ECMWF and GFS show an increase in monsoon moisture. Thus will see an increasing chc for showers and storms over the higher terrain and across the plains for Mon and Tue. Temperatures will continue hot over nern CO Sun and Mon. By Mon night into Tue a weak cool front may move across which would allow for highs to drop back to more seasonal levels. && .AVIATION /06Z TAFS through 06Z Friday/... Issued at 1113 PM MDT Wed Jul 22 2026 Winds have trended to light drainage late this evening and will continue overnight. By 12z Thu winds will go light and variable and then shift to light north by 17z. By 20z winds will become ENE. Sct tstms will move across between 21z and 00z with gusty outflow winds up to 40 mph along with brief visibility down to 3 to 5 miles. Tstm activity should gradually end by 01z. Winds will gradually shift to the SE by 02z. && .BOU WATCHES/WARNINGS/ADVISORIES... None. && $$ DISCUSSION...RPK AVIATION...RPK