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027 FXUS65 KBOU 041734 AFDBOU Area Forecast Discussion National Weather Service Denver/Boulder CO 1134 AM MDT Thu Jun 4 2026 .KEY MESSAGES... - Trending warmer and drier for today and Friday with only a slight chance of thunderstorms. - Afternoon high temps to reach the mid 90s across the plains this weekend. && .DISCUSSION /Through Wednesday/... Issued at 249 AM MDT Thu Jun 4 2026 The flow aloft will become more WNW today with some decrease in low level moisture across the plains. However, the far nern plains will still have SBCAPE in the 1500-2000 range during the aftn. As a result, could see an isold stg/svr storm during the late aftn/early evening hours over the far northeast corner. Otherwise, further west, any shower/tstm activity will be high based and may produce gusty winds with DCAPE around 1000 j/kg. As for highs, readings will be warmer across nern CO as highs rise into the mid 80`s to lower 90`s. On Fri, the flow aloft will become more westerly. A weak cool front will move across the plains in the morning with easterly low level flow by aftn. Have mentioned a slight chc of tstms from South Park, across the srn foothills and Palmer Divide for late aftn thru the early evening hours. A few stronger storms are certainly possible due to SBCAPE around 1500 j/kg along with favorable shear. Highs on Fri will be in the mid 80`s to around 90. For Sat, weak SW flow aloft will be over the area. Models have some mid level moisture in the flow so can`t rule out widely sct high based showers and storms mainly over the higher terrain. Highs will be warmer on Sat as readings rise into the low to mid 90`s across the plains. By Sun, WSW flow aloft will develop with a sfc lee trough over the plains. This will lead to another very warm day with readings in the mid to upper 90`s across the plains. Meanwhile, if there is some moisture embedded in the flow, may see a slight chc of higher based showers/tstms in the aftn and evening hours. Looking ahead to Mon, a cool front is fcst to move across the plains which may drop temps back into the 85 to 90 degree range. As for tstm chances, it will depend on whether a capping inversion can be broken or not. For now have kept pops in the 20-30 percent range. For the middle part of next week, an upper level trough will be over the Pacific NW with rather stg WSW flow aloft over the area. This will lead to warmer temps as readings rise well into the 90`s across nern CO. Overall it looks mainly dry both days, although can`t rule out a few isold storms over portions of the plains where decent instability will exist ahead of a pseudo dryline. && .AVIATION /18Z TAFS through 18Z Friday/... Issued at 1130 AM MDT Thu Jun 4 2026 VFR conditions are expected throughout the TAF period. Winds should stay light and relatively variable through the early afternoon. By 20z, a northerly component should become established with increasing mid- and high-level cloud cover. Virga showers with gusty outflow winds to around 30 kts are possible between about 20z and 1z this afternoon at all three sites. Winds will turn to drainage tonight and should remain below 10 kts. Winds will then turn to northerly tomorrow morning around 14z and then to near easterly for much of tomorrow afternoon after about 20z at all three sites. For tomorrow afternoon, there is a lower chance than this afternoon (10-20%) of virga showers with gusty outflow winds. The highest chance for this is to the south and west of KDEN (closer to KAPA and KBJC). Have not added in a prob30 at this time as confidence is too low. Mid and high-level cloud cover will increase in the afternoon, as well. && .BOU WATCHES/WARNINGS/ADVISORIES... None. && $$ DISCUSSION...RPK AVIATION...MV